Lighting module

FIELD: electricity.

SUBSTANCE: invention relates to the lighting module for electrical and thermal connection with power infrastructure, having at least one power source, at that each power source contains two electrodes. The lighting module contains the light source for the light emission, in it the light source is the heat source during the light emission, two electric contacts to ensure contact with the electrodes of at least one power source, by this the electric connection is ensured between the lighting module and power infrastructure; control system located between the light source and electric contacts to control the power supply to the light source, in which the lighting module contains the measurements system measuring the thermal resistance of the thermal connection between the lighting module and power infrastructure during making of the electric connection , and in which the control system is made with possibility to reduce power supply to the light source when the thermal resistance is above the pre-set value to protect the lighting module against overheating. Invention also relates to the method of lighting module protection against overheating.

EFFECT: improved operation reliability of the module.

15 cl, 5 dwg

 

The present invention relates to the technical field of lighting units, and more specifically to lighting modules for electrical and thermal connection with the power infrastructure.

The prior art INVENTIONS

The light module includes a light source for light radiation and preferably can be easily attached to the power infrastructure having at least one power source, wherein the power source contains two electrodes. Power infrastructure may take the form of well-known halogen wire systems or 2D configuration of the electrodes.

Preferably, the connection of the light module to the power infrastructure is done by hand without the use of additional tools such as clamps and/or magnetic mount. This allows a user without technical knowledge to attach the light module to the power infrastructure. However, it is also possible screwing or bolting.

The light source is usually the source of heat during the emission of light and in order to keep the lighting module is small, it is desirable to transfer the generated heat to the power infrastructure, instead of having to equip a lighting module as its own heat-absorbing device. Consequently, it is important that in addition to the electrical connections istochnikom power between the light module and power infrastructure installed thermal connection.

Module type lighting referred to in the first paragraph, is known from the patent application published under number W0 2009/044340. More specifically, this document discloses a light module for electrical and thermal connection with the power infrastructure that has a power source with two electrodes. The known light module contains a light source to emit light, the light source acts as a source of heat during the emission of light. The module also contains electrical contacts for contacting the electrodes of the power source, thereby creating an electrical connection between the light module and power infrastructure. The module further comprises a control system arranged between the light source and electrical contacts for controlling the power supplied to the light source. Known module also includes a measuring system for measuring thermal resistance of thermal coupling between the light module and power infrastructure, when electrical connection is established. The control system is arranged to reduce the power provided to the light source when thermal resistance is above a predetermined value to protect the light module from overheating.

The disadvantage of these lighting units is that when Paul�ovatel sets or resets the lighting module, there is a risk of poor thermal contact, which results in high thermal resistance thermal connection. As a result, the light module will overheat, which will reduce light output and may even cause damage to the light module.

Proposed solutions for temperature measurement of the light module through which tracked overheated whether the lighting module, and appropriate measures are taken. However, the disadvantage of these solutions is that when measurements are made to determine overheating, the light module may already have so-called time of combustion at an elevated temperature, which, however, may cause damage to the lighting module. Another disadvantage may be that the user does not receive an immediate response that thermal contact between the light module and power infrastructure is poor. Farkas et al, IEEE, March 9, 2004, pages 169-177, refers to the dissemination of the electrical and thermal transition States in the high power LEDs and offers multi-domain "compact" model suitable for accurate modeling of single devices and arrays of Seeders on the equipment of modulating the level of a payment.

Lan Kim et al, IEEE, March 14, 206, pages 186-190, relates to the measurement of transient thermal States of the GaN-Led with high power multichip designs.

WO 2004/068909 discloses a connector and a connecting element connected by wiring to the module socket, and three led modules connected in parallel in relation to phase the DC voltage through the wiring.

Summary of the INVENTION

It would be desirable to provide improved illumination module, which is protected from overheating. It would also be desirable to provide an improved light module, which gives immediate response to the user, indicating satisfactory thermal connection.

To better address one or more of these tasks, in the first aspect of the invention provided a light module for electrical and thermal connection with the power infrastructure having at least one power source, each power source includes two electrodes, wherein the said light module contains: 1) a light source for emitting light, wherein the light source is a heat source when the emission of light, 2) two electrical contact to contact with the electrodes, at least one power source, whereby electrical connection is established between fashion�eat lighting and power infrastructure, 3) control system located between the light source and electrical contacts for controlling the power supply to the light source, 4) a measurement system for measuring thermal resistance of thermal connection between the light module and power infrastructure when establishing the electrical connection, wherein the control system is arranged to reduce power to the light source when thermal resistance is above the preset value to protect the light module from overheating, and the measurement system is located near the light source, and a warning system is provided to provide a visual warning by flashing the light source, when thermal resistance is above the preset value.

Also provides a method to protect the light module from overheating, wherein said method contains the stages on which:

- connect the lighting module with power infrastructure, thereby establishing electrical connection between the light module and power infrastructure;

- measure thermal resistance of thermal connection between the light module and power infrastructure system of measurement;

- reduce power to the light source with�STEMI management when thermal resistance is above the preset value to protect the light module from overheating,

- provide a warning signal when thermal resistance is above the preset value.

Further provided in combination a light module for electrical and thermal connection with the power infrastructure and power infrastructure, and power infrastructure has at least one power source, each power source includes two electrodes, and the said light module includes a light source for emitting light, wherein the light source is a heat source when the emission of light, two electric contact to contact with the electrodes, at least one power source, whereby electrical connection is established between the light module and power infrastructure, management system, located between the light source and electrical contacts for controlling the power supply to the light source, wherein the illumination module includes a measurement system for measuring thermal resistance of thermal connection between the light module and power infrastructure when establishing the electrical connection, and in which the system upravleniemoeda with the ability to cut power to the light source, when thermal resistance is above the preset value to protect the light module from overheating, and wherein the warning system is provided for providing a warning signal when thermal resistance is above the preset value.

These and other aspects of the invention will become more readily appreciated and become better understood by reference to the following detailed description and will be taken into account in connection with the accompanying drawings, in which similar reference position indicate similar parts.

BRIEF description of the DRAWINGS

Fig. 1 represents a schematic view of the light module according to the embodiment of the invention;

Fig. 2 shows a detailed view of the system of measurement of the light module according to the embodiment of the invention;

Fig. 3 shows a schematic view of a lighting module according to another embodiment of the invention;

Fig. 4 shows a trajectory of temperature and pressures, one in the event of a satisfactory thermal contact, and two in the case of poor thermal contact; and

Fig. 5 shows two temperature trajectory, one in the event of a satisfactory thermal contact, and one in case of unsatisfactory termites�wow contact.

DETAILED DESCRIPTION of embodiments of

Fig. 1 shows the light module LM for electrical and thermal connection with the power infrastructure EI having at least one power source PS, with each power supply contains two electrodes E1, E2. The light module LM contains a light source LS to emit light L, which is the heat source when the radiation light L, the two electrical contact EC1, EC2 for contact with the electrodes E1, E2, at least one power source PS and establishing thereby electrical connection between the light module LM and power infrastructure EI, the control system CS is arranged between the light source LS and electrical contacts EC1, EC2 to control power supplied to the light sources LS, and the measurement system MS for the measurement of thermal resistance TR a thermal connection between the light module LM and power infrastructure EI when establishing the electrical connection. The control system CS is arranged to reduce power to the light source LS when thermal resistance TR is above the preset value to protect the light module LM from overheating.

In this embodiment of the power supply to the light source LS is controlled by the length including� " s electric supply i.e. a duty cycle of the light source. Duty cycle is the fraction of time in which the power is transmitted to the light source LS to emit light L. the Two extreme values are on-time, 0 or 0%, in which the light source generally emits light, and the turn-on duration of 1 or 100%, in which the power source LS continuously emits light. Between these two extreme values of the light source is alternately emits or does not emit light L. Preferably, the light source is controlled using the rectangular waveform so that the duration of the inclusion in the alternative, may be defined as the ratio between the "on" state, in which the light source emits light and an off state in which the light source does not emit light.

The lighting module shown in a state where it is connected to the power infrastructure, and electrical contacts EC1, EC2, respectively, are in electrical contact with the electrodes E1, E2. Activation time set by the power that is transmitted to the light source, is controlled by the control system, which in this embodiment, the implementation controls the switch SW. The closure of switch SW closes the electrical circuit so that the source p�Tania PS will be able to supply power to the light source, and the light source will emit light L. the switch is opened, disconnects the power source to the light source, whereby power from the power source to the light source is prevented so that the radiation light L does not occur.

The control system may be arranged to reduce the duration of the switched on power to the light source, reducing the duration of the feed when thermal resistance is above the preset value. The control system may additionally or alternatively be configured to reduce power to the light source, reducing the amplitude of the power transmitted to the light source.

In this embodiment of the heat spreader HS is located between the light source LS and electrical contact EC1. The heat spreader is made of electrically insulating material for electrically insulated thermal dispenser from electrical contact EC1. The heat generated by the heat source may be transferred from the light source to the power infrastructure through the heat spreader, and electrical contact EC1 and electrode E1. thermal resistance of this heat of thermal resistance, TR. PR�doctitle thermal resistance of the heat spreader is relatively low so what critical thermal resistance is thermal resistance between the electrical contact and the electrode EC1 E1.

The electrode E1 and the corresponding electrical contact EC1, both larger than the electrode E2 and the electrical contact EC2. This provides minimum thermal resistance, if it is determined satisfactory thermal contact so that the light module can be protected from overheating.

As to protect the light module from overheating, low thermal resistance, the measurement system measures thermal resistance. If thermal resistance is above the preset value, causing the danger of overheating, the control system will modify the power supply to the light source, for example, reducing the duration of activation of the light source. This has the advantage that the amount of heat generated by the light source decreases and the lighting module is protected from overheating. Measurement of thermal resistance has the advantage that relatively quickly, you can define a satisfactory thermal contact, e.g., for measuring temperature, an advantage over the case where you want to wait until the temperature reaches the pre-sadanah� restrictions. Another advantage may be that in the case of reducing the duration of inclusion of the light source, the user is provided a visual indication that thermal contact is poor.

Preferably a "normal" activation time in case thermal resistance below the preset value, is that it achieves nominal operating current, a duty cycle can be up to 100%. Good visual indication may be obtained when the activation time is reduced so that the light source flashes when thermal resistance is above the preset value, the duration of activation can be lowered below 50%. Also, when thermal resistance is above the preset value, it is possible to reduce activation time to 0% so that the light source will be turned off or inoperative, also clearly indicating that thermal contact is not satisfactory. Flashing warning light is preferred in respect of the signal, wherein the light source is turned off, since flashing warning light also indicates that the electrical connection betwee�Linux installed and the lighting module is defective.

To alert the user and issue an immediate answer about thermal contact possible other warning signals, such as audible or vibrating.

thermal resistance can be determined by measuring the electrical resistance of the contact between the electrical contact and the electrode EC1 E1. And electrical resistance, and thermal resistance depend on physical contact between the electrical contact EC1 and the electrode E1, so that the electrical resistance is a measure for thermal resistance.

Preferably, the electrical resistance is determined in such a way that the impact of the current applied to the lighting module, the measurement is minimal. An example of such behavior is shown in Fig. 2.

Fig. 2 shows an example of measurement system lighting module for measuring thermal resistance between the electrical contact and the electrode EC1 E1. Thermal resistance is measured by measuring the electrical resistance, i.e., the contact resistance between the electrical contact and the electrode EC1 E1. The measurement system contains a voltmeter V connected to the electrode E1 by using the test output TP and part P electrical contact EC1, which shall not be a current CU, so that the measured voltage�s is a measure for the contact resistance between the electrical contact EC1 and the electrode E1 and does not include strength of materials electrical contact EC1 and/or electrode E1.

Fig. 3 shows a schematic view of the light module LM' according to another embodiment of the invention. The light module LM' is suitable for electrical and thermal connection with the power infrastructure (not shown) having at least one power source, each power source includes two electrodes.

The light module LM' contains the printed circuit Board PCB, which is provided with multiple light sources LS' (e.g., Led) to emit light. The light sources LS' when rays of light are sources of heat. PP also provided a control system for controlling the power provided to the light sources LS', for example, the turn-on duration.

The light module LM' further comprises two electrical contact EC1', EC2' to make contact with electrodes of at least one power source and thereby establish electrical connection between the light module and power infrastructure. Electrical contacts connected to the circuit Board PP respectively via electrical line ELI, EL2.

When establishing the electrical connection of the heat spreader HS' is placed between the sources LS' light and power infrastructure. The heat spreader HS' contains thermal contact area�a vehicle for establishing a thermal connection between the light module and power infrastructure.

The light module includes a measurement system for measuring thermal resistance of thermal connection between the light module and power infrastructure. The measurement system is arranged to determine thermal resistance of thermal connection by measuring the heat flux from the light sources to the power infrastructure. In this embodiment of the measurement system provided with two temperature sensors TS1, TS2.

When establishing a thermal connection of the temperature sensor TS1 is in the heat spreader HS' near the light source and the temperature sensor TS2 is in the heat spreader HS' next to thermal contact area of the vehicle, i.e. close to power infrastructure.

Heat flux can be defined as thermal power divided by thermal resistance. When thermal contact between thermal contact area of the vehicle and power infrastructure is satisfactory, the total thermal resistance will be relatively low. As a result, the light module will relatively quickly reach thermal equilibrium with the power infrastructure because it requires only a small temperature pressure for setting the heat flux, which corresponds to the amount of heat generated IP�anicom heat i.e. the light source.

When thermal contact between thermal contact area of the vehicle and the power infrastructure is not satisfactory, the total thermal resistance will be relatively high. As a result, the light module will be more slowly to reach a thermal equilibrium, since it requires a large temperature pressure for setting the heat flux, which corresponds to the amount of heat generated by the heat source, i.e. a source of light. This pressure in the heat flow as a function of time can be detected to determine whether a satisfactory thermal contact.

It is also possible to provide a small convector or radiator that is connected to the heat spreader HS' to provide an alternative route for heat leakage. Higher thermal resistance will result in a greater "leakage" of heat through the convector or radiator so that the heat flux through the heat spreader and thermal contact area is reduced. This reduction in heat flow is measured as a reduced temperature difference.

Fig. 4 shows the trajectories of the temperature difference measured by the temperature sensors TS1, TS2 of Fig. 3, in the case where thermal contact between the light module � power infrastructure is satisfactory, and in two cases, when thermal contact between the light module and power infrastructure is poor. The vertical axis is temperature and the pressure of the DT, the horizontal axis is the time.

The trajectory of the temperature difference dT1 is the temperature the pressure depending on the time measured by temperature sensors TS1, TS2 in the event of a satisfactory thermal contact. At time t1 essentially equilibrium is reached, after which the flow of heat through the heat spreader becomes constant, leading to constant temperature and pressure.

The trajectory of the temperature difference dT2 is the temperature the pressure depending on the time measured by temperature sensors TS1, TS2 in the case of poor thermal contact and the lack of additional paths of heat flow, for example, convector, radiator, or other pathway. At time t2 essentially equilibrium is reached, after which the flow of heat through the heat spreader becomes constant, leading to constant temperature and pressure. Since thermal resistance is higher due to poor thermal contact, to achieve the balance required for more time.

The trajectory of pace�Turnovo pressure dT3 is the temperature pressure depending on time measured with temperature sensors TS1, TS2 in the case of poor thermal contact and provide additional heat flow path, for example, convector, radiator, or other pathway. At time t3 essentially equilibrium is reached, after which the flow of heat through the heat spreader becomes constant, leading to constant temperature and pressure. Since thermal resistance is higher due to poor thermal contact, more heat will flow through the additional heat flow path so that the flow of heat through a thermal spreader using thermal pads will be lower, as shown in Fig. 4.

Thus, the control system has the ability to measure thermal resistance, considering specific period of time and determining whether the achieved equilibrium or not. It is also possible to consider the maximum heat flux in the case of additional paths of heat.

There is also a case where no thermal contact is established, leading to complete absence of heat flow. However, the indication of a complete lack of heat could also mean that the light module is in the off state, i.e., in the state head�of Rhenia work. In this case, may be issued a false warning. To avoid this, it is also additionally possible to measure the current or the temperature.

To determine thermal resistance of this information can be used only one temperature sensor. For example, if a temperature sensor TS1, and a temperature sensor TS2 is neglected, thermal resistance can also be defined by considering the time derivative for the temperature measured by temperature sensor TS1. This is shown in the event of a satisfactory thermal contact and poor thermal contact Fig. 5.

Fig. 5 the vertical axis shows temperature, while the horizontal axis shows time TIME. The trajectory of the temperature T1 indicates the temperature measured by temperature sensor TS1 in the event of a satisfactory thermal contact. The trajectory of the temperature T1' shows the temperature measured by temperature sensor TS1 in the case of poor thermal contact. For a single time period the rate of change of temperature trajectories T1 and T1', i.e. the time derivatives of the temperature, indicated respectively by the lines dT1dt and dT1'dt. When there is poor thermal contact, the temperature will increase more quickly than in SL�tea satisfactory thermal contact, thus, the time derivative of temperature is a measure of thermal resistance.

All of the above variants of implementation and the indication can also be applied to lighting systems with adjustable brightness. For some signs that are obvious to experts in this field of technology, you may need to scale the values on the level of the power provided to the lighting module.

As required, the materials of the present application discloses further embodiments of the present invention; however, it is to be understood that the disclosed embodiments of are only approximate regarding the invention, which may be implemented in various forms. Therefore, specific structural and functional details disclosed in the materials of the present application, should not be interpreted as limiting, but merely as a basis for the claims and as a representation of the examples for specialists in the art to variously use the present invention in virtually any appropriate detailed structure. Moreover, the terms and phrases used in the materials of the present application, are not intended to be limiting but rather to provide an understandable description from�retenu.

Terms in the singular, as used in the materials of the present application, is defined as one or more than one. The term "lot" as used in the materials of the present application, is defined as "two or more than two." The term "another", as used in the materials of the present application, is defined as "at least a second or further". The terms "includes" and/or "having", as used in the materials of the present application, is defined as "containing" (i.e. open enrollment, which does not exclude other elements or stages). Any character references in the claims should not be interpreted as limiting the scope of the claims or the invention.

The simple fact that certain criteria are listed in mutually different dependent claims, is not an indication that the combination of these criteria cannot be profitably used.

A single processor or other unit may fulfill the functions of several items set forth in the claims.

1. A light module for electrical and thermal connection with the power infrastructure having at least one power source, each power source includes two electrodes, wherein the said light module contains:
- light source:�to light for emitting light, moreover, the light source is a heat source when the emission of light,
two electric contact to contact with the electrodes, at least one power source and, through this, establish the electrical connection between the light module and power infrastructure,
- control system positioned between the light source and electrical contacts for controlling the power delivered to the light source,
- a measuring system for measuring thermal resistance of thermal connection between the light module and power infrastructure when establishing the electrical connection, wherein the control system is arranged to reduce power to the light source when thermal resistance is above the preset value to protect the light module from overheating, characterized in that
the measurement system is located near the light source,
and because it contains
- warning system to provide a visual warning by flashing the light source when thermal resistance is above the preset value.

2. The lighting module according to claim 1, wherein the light source is a light emitting diode (led).

3. The lighting module according to claim 1 or 2, wherein the system�and the control is arranged to reduce power to the light source, reducing activation time when thermal resistance is above the preset value.

4. The lighting module according to claim 1, wherein the control system is arranged to reduce power to the light source by reducing the amplitude.

5. The lighting module according to claim 1 comprising a heat spreader located between the light source and power infrastructure when establishing the electrical connections for establishing a thermal connection between the light module and power infrastructure.

6. The lighting module according to claim 5, in which the heat spreader is connected to one of two electrical contacts and electrically isolated from the other electrical contact and in which the measurement system is arranged to determine thermal resistance of thermal connection by measuring the electrical resistance contact between said one of the two electrical contacts and the corresponding electrode of the at least one power source.

7. The lighting module according to claim 6, in which the electrical resistance between said one of the two electrical contacts and the corresponding electrode of the at least one power source is determined by measuring the voltage �mentioned between one of the two electrical contacts and the corresponding electrode.

8. The lighting module according to claim 1, wherein the measurement system is configured to determine thermal resistance of thermal connection by measuring the heat flux from the light source to the power infrastructure.

9. The lighting module according to claim 5, in which two temperature sensor provided in the heat spreader to measure the heat flux from the light source to the power infrastructure, while establishing a thermal connection of one sensor is placed near the light source, and the other sensor is located near power infrastructure.

10. The lighting module according to claim 5, in which the measurement system includes a temperature sensor integrated heat spreader and preferably located near the light source for measuring the time derivative of temperature in the heat spreader.

11. Method of protection of a lighting module according to any one of claims. 1-10 from overheating, wherein said method contains the stages at which:
- connect the lighting module with power infrastructure, thereby establish electrical connection between the light module and power infrastructure;
- measure thermal resistance of thermal connection between the light module and power infrastructure through a system of measurement;
- reduce flow, Pete�of the light source by the control system, when thermal resistance is above the preset value to protect the light module from overheating;
- provide a warning signal when thermal resistance is above the preset value.

12. A method according to claim 11 in which the power to the light source is reduced by reducing the length of the inclusion, when thermal resistance is above the preset value.

13. A method according to claim 11 or 12, in which the power to the light source is reduced by reducing the amplitude of the power when thermal resistance is above the preset value.

14. A method according to claim 11, in which thermal resistance of thermal compound is determined by measuring the heat flux from the light source to the power infrastructure.

15. The lighting module according to any one of claims. 1-10 in combination with the power infrastructure having at least one power source, each power source includes two electrodes.



 

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3 cl, 2 dwg

FIELD: physics.

SUBSTANCE: invention relates to a light-emitting device (1) having an exciter (10) and a flat light-emitting element (20), where the exciter (10) is connected to a source (2) and a the light-emitting element (20), and where the light-emitting element (20), which has internal capacitance (21), is connected to the said exciter (10) so that the internal capacitance (21) serves as the passive output filter of the exciter (10).

EFFECT: design of a light-emitting device with smaller thickness.

10 cl, 9 dwg

FIELD: physics.

SUBSTANCE: proposed illuminator 10 built around LEds comprises assemblage of LED different-colour light sources 14 to produced mixed-colour light and LED source control device to control said sources in compliance with preset values. Note here that first control data are generated by, at least, one colour transducer 22. Illuminator differs from known designs in that its incorporates device 30, 32 designed to determine the temperature of each LED light source and device 26 to compensate for preset values in compliance with second control data including LED light source temperature.

EFFECT: higher stability of operation.

20 cl, 2 dwg, 1 tbl

FIELD: physics.

SUBSTANCE: invention relates to a device for powering luminous elements, having an energy supply unit (12), a first luminous element (30), having a first colour, preferably white, a second and a third luminous element (34, 38), having a second and a third colour, preferably for adjusting the colour of the first luminous element, and a controlled switch (42), connected in series to the said third luminous element (38). Said serial connection from the said third luminous element (38) and said switch is connected in parallel to the said second luminous element (34). The energy supply device is characterised by that the said energy supply unit (12) has a third and a second output (20, 22). The said first luminous element (30) is connected to the said first lead (20) and the said second and third luminous elements (34, 38) are connected to the said second led (22), the said energy supply unit (12) is configured to provide controlled, preferably independently controlled, output signals on the said first and second leads (20, 22), and the said second and third luminous elements (34, 38) and the said energy supply unit (12) are configured in such a way that, the said third luminous element (38) emits light when the switch (42) is closed. The invention also relates to a method of powering the luminous elements.

EFFECT: fewer switches.

20 cl, 4 dwg

FIELD: physics.

SUBSTANCE: circuit (1) with light-emitting diodes is provided with first subcircuits, having first light-emitting diodes (11) and second subcircuits having second light-emitting diodes (13) and switches (14), in conducting states, for switching on the second light-emitting diodes (13) and switching off the first light-emitting diodes (11), and, in non-conducting states, for switching off the second light-emitting diodes (13) and switching on the first light-emitting diodes (11). Also, the first and second subcircuits have different signal characteristics, such as different minimum threshold voltage values, so as to be realised by different types of light-emitting diodes (11, 13) or using a different total number of serial light-emitting diodes (11, 13) or by adding elements with threshold voltage to the first subcircuits. The light-emitting diodes (11, 13) have different colours and can be used backlight.

EFFECT: simplification.

16 cl, 4 dwg

FIELD: physics.

SUBSTANCE: illumination device (1) comprises, for example, diodes LED (L1, L2, L3, L4) with separate emission spectra. Detectors D1, D2, D3, D4) can generate a vector of measurement signals (S1, S2, S3, S4) which represent light output of one active light emitter. Further, based on a linear relationship obtained during the calibration procedure, the characteristic value of the light output of that light emitter (L1, L2, L3, L4) is calculated using the measurement vector, wherein said characteristic value is based on the decomposition coefficient of an individual emission spectrum on basic functions.

EFFECT: improved method.

25 cl, 6 dwg

FIELD: physics.

SUBSTANCE: illumination system (100) comprises: a set (14) of lamps; a controller (115); a user input device (19); memory (120) which determines discrete colour points containing an ID table (121) of hue, an ID tale (122) of saturation, an ID table (123) of brightness and boundary memory (124) which determines the boundary of the colour space. Based on data (x1, x2, x3) received from the user input device and information in the memory, the controller generates colour control signals (ξ1, ξ2, ξ3) for the set of lamps. The controller compares user input data with information in the boundary memory. If the controller detects that the said point lies beyond the boundaries of the colour space, the controller calculates the replacement point on the boundary of the colour space which was determined in the boundary memory (124), and generates is control signals based on the replacement point.

EFFECT: reduced volume of memory space required.

3 cl, 3 dwg

FIELD: physics.

SUBSTANCE: switched array of light elements has first, second and third light-emitting elements and first and second switches. The first light-emitting element has first and second leads, and the second light-emitting element has a first lead and a second lead connected to the second lead of the first light-emitting element. The third light-emitting element has a first lead connected to the first lead of the first light-emitting element, and a second lead. The first switch has a first lead connected to the first leads of the first and third light-emitting elements, and a second lad connected to the first lead of the second light-emitting element. The second switch has a first lead connected to the second lead of the third light-emitting element, and a second lead connected to the second leads of the first and second light-emitting elements.

EFFECT: fewer circuit components.

13 cl, 8 dwg

FIELD: electricity.

SUBSTANCE: matrix of luminous elements (100) includes the first (LEE1), the second (LEE2) and the third (LEE3) light-emitting elements and the first (140) and the second (150) controlled current sources. The first light-emitting element differs with the first operating voltage VOpi at which or over which it can essentially emit the light. The second light-emitting element includes the first output (120a) and the second output (120b) connected to the second output of the first light-emitting element; at that, the second light-emitting element differs with the second operating voltage Vop2. The third light-emitting element includes the first output (130a) connected to the first output (110a) of the first light-emitting element and the second output (130b); at that, the third light-emitting element differs with the third operating voltage Vop3. The first controlled current source is connected between the first output of the first light-emitting element and the first output (120b) of the second light-emitting element, and the second controlled current source is connected between the second output (110b) of the first light-emitting element and the second output of the third light-emitting element.

EFFECT: reducing the number of circuit components.

15 cl, 5 dwg

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