Method for driver's eyes protection if blinded by light of oncoming car

FIELD: medicine.

SUBSTANCE: invention refers to medicine and can be used in labour hygiene and occupational health problems. A digital camera is fixed on a driver's head in front of his eyes and a blinding light source. Crossing coordinates of a display plane and straight lines connecting an eye centre with each blinding source are determined. Blackout areas comparably sized with a head lamp light of the oncoming car are displayed. A maximum contrast negative image of the blinding light sources read out from the camera is presented on a transparent display.

EFFECT: method provides the more effective driver's eyes protection if blinded by the light of the oncoming car that is ensured by displaying the maximum contrast negative image of the segments corresponding to the blinding head lamp light.

4 cl, 2 dwg

 

The invention relates to the field of protection of eyes from blinding oncoming light and can be used in vehicles to protect the eyes of the drivers from the blinding headlights of oncoming vehicles, as well as the sun, bright street lights and other sources of glare (including from blinding laser).

The prior art known to the decision to patent RU 2444345 where the protection is achieved by using the "change the transmission side of the glasses in the zone of probable passage of the trajectories of the beam to the left of the axis of vision". This zone is fixed, it is determined in advance by the manufacturer points. Thus, obscured not only a source of glare, but also other objects, caught in this zone, which can in some situations do not increase and decrease safety. In addition, not obscured sources of glare that are not included within this zone, for example, street lights and the sun. The difference of the claimed solution is that it is obscured by those (the amount is significantly lower) region of the transparent display, which corresponds to the actual current provisions of the sources of glare. I.e.: a) not obscured by unnecessary areas transparent display, b) dimming is possible anywhere in the transparent display, and not only in a pre-selected area, thereby protecting from the sun and from the bright street the lights, etc.

Known patent RU 2274439, according to which "blackout translucent screen printed on the left half of the glass from the side of oncoming traffic". The solution has the same drawbacks as in the previous case, and area dimming: a) more - half glass, b) is permanent, and does not become dark only when the blinding, which further reduces the security. An additional drawback is the driver supposed to do some head movements. Known patent for utility model RU 92789U system to protect the eyes of the driver in the blinding headlights of an oncoming vehicle, containing a screen, a camera, a device that detects coordinates of intersection of the optical axis of the eye with the screen, the control unit on the basis of software and hardware, configured to periodically read the coordinates of the eye position of the driver from the sensor for determining the coordinate position of each of the human eye relative to the screen, characterized in that the screen is made in the form of a transparent or partially-transparent protective polymeric liquid-crystal display low-resolution matrix type and mounted on the windshield of the vehicle or between the windshield and the driver, and function of which is commensurate with the headlights of oncoming vehicles forms the of the darkening in the part of the screen, want to protect the eyes of the driver of the vehicle from the blinding headlights of the oncoming vehicle, and the control unit is configured to periodically read an image of the headlights of an oncoming vehicle from the camera.

Compared with the similar, the proposed system is simpler, cheaper and more reliable, because it does not contain any "device for determining the coordinate position of each of the human eye relative to the screen or sensor for determining the coordinate position of each of the human eye relative to the screen or device that detects coordinates of intersection of the optical axis of the eye with the screen. These devices become unnecessary, because in the proposed system transparent display is fixed on the head of the driver, i.e. the position of the display relative to each eye remains unchanged and can be considered once when setting up the system.

The closest solution is patent JP 6225905. For comparison with him first, note that there are two methods of protection (driver) from glare with LCD display, fixed on the head (in particular, the built-in glasses):

1) use LCD displays regular, non-transparent (or slightly transparent), known from the 60-70-ies of the last century, and display them on the positive (normal) image. In this case, water is spruce sees is not the real situation, and her image on the display. When any accidental displacement of the points relative to their original positions, the driver will perceive a distorted situation. Negative, until the disastrous consequences of this are obvious;

2) use LCD displays clear (transparent), appeared in the most recent years (serial output F. Samsung April 2011), and display them on the maximum contrast negative image (with a configurable threshold "white-black"), so that the sources of glare on the display, turn into dark spots, and the rest of the display surface (background) remains clear. In this case, the driver sees through the transparent display of the real situation, and not her image. Accidental displacement of points on the head can disrupt protection from glare, but the driver will still see the real situation, and not the biased image. So it is, this method lacks disadvantage of the first method.

In this patent JP 6225905 in the materials of the invention there is no evidence that the LCD panel (essentially displays) - transparent. In addition, in section (0014) said: "you can also use the device-capture 6A and 6b to work in color as the liquid crystal panel 4A and 4b (i.e. the camcorder and the LCD panel can be colored). From this we can assume that on the LCD panel output is raised image instead of creating a transparent background, i.e. uses the first of the considered methods.

In the proposed solution offers the second method is based on the use of transparent displays. In addition, it is proposed to use two cameras, as in the prototype, and one that, obviously, cheaper.

The technical result of the claimed invention lies in the substantial increase of efficiency of protection from blinding oncoming light.

It also provides display maximum contrast negative image read from the camera and display the image read from the camera, with a constant scale factor (constant scaling).

This technical result is achieved due to the fact that the way to protect the eyes of the driver when the blinding headlights of an oncoming vehicle, characterized by the use of: a transparent display, which form commensurate with the headlights of an oncoming vehicle parts dimmable; digital camera; determining coordinates of intersection with the plane of the display lines, connecting the center of the eye with each source of glare, characterized in that the camera is fixed on the head of the driver, and the display is placed on the head of the driver in front of his eyes between them and the sources of blinding light.

Site is preferably transparent display output maximum contrast negative image, read from the camera and include images sources of glare. It is preferable that the transparent display to display an image read from the camera and passed through a threshold shaper with inversion of brightness, and the threshold value set by the user.

It is preferable that the degree of transparency plots dimming set by the user. It is preferable that the threshold setting and the degree of dimming is performed in one of three modes user selectable: manual, automatic or combined.

The invention can be implemented as follows.

Form a system consisting of elements: a transparent display, a digital photo or video camera, the control unit based on a microprocessor or microcontroller (control unit connected to the display and the video camera). The control unit may be structurally and mechanically incorporated with a microprocessor (microcontroller) that is included with the camera and managing its work.

In this system it is assumed fixation as a transparent display, and the camera on the head of the driver. Display size and weight are similar to the displays of cell phones, cameras, navigation devices, video recorders, etc., Fixing of display can be achieved by its design or in the form of points, either in the form of nozzles on the PTS is, either in the form of a General display for both eyes, mounted on a helmet or other headgear (for example, on the visor of a baseball cap), or similar medical mirror. Accordingly, the camera, the size and characteristics similar to the cameras used in the same device, can be mounted either on the frame of the spectacles, or headdress, which is fixed to the display, either on the display or on the Hoop, worn on the head, if the display is similar to the medical mirror.

It seems appropriate integration of the proposed system (as an option) in the "smart glasses", or "augmented reality glasses" that are created, for example, Google, Microsoft, Olympus, Oakley, because these multi-function devices already contain transparent display (all) and the camera (glasses Google and Microsoft).

Operation of the proposed system is illustrated in Fig. 1 (execution display in the form of glasses or lens attachments on your glasses, the display consists of two identical parts), Fig. 2 (for the execution of the display screen sharing on both eyes).

The system is based on transparent display 1. It has the following property: bright (white, if the display color) fragments displayed on the image display whose brightness exceeds a certain threshold, become transparent.

Transparent display fixed the head and the driver in front of his eyes 4, i.e., between them and the sources 5 blinding light. The control unit 3 periodically (with a frequency of about 30 Hz or more) reads from the camera 2, is also mounted on the head of the driver, image sources blinding 5 and forms a transparent display 1 dark areas (spots) 6 in precisely those places where they obscure sources of glare 5. Accordingly, each source blinding 5, the control unit 3 generates two dark spots 6 - one for each eye 4. While the rest of the display remains clear.

In the proposed system is set and, if necessary, adjusted the protection threshold, i.e. the value of the relative brightness (original image perceived by the camera), above which the brightness is blinding and requires protection.

The essence of the formation of images displayed on the transparent display, is as follows: on the transparent display maximum contrast negative image read from the camera; in other words: on the transparent display displays an image read from the camera and passed through a threshold driver with inverted luminance (threshold shaper is hardware or software part of the control unit).

In other words, each pixel of the image displayed on the display, is formed by the following logic: if the brightness of the pixel recognize the aqueous images read from the camera, below the protection threshold, the corresponding pixel on the display is formed as bright, and therefore (according to the specified property of the transparent display as transparent; when the brightness of the pixel of the original image read from the camera, above the protection threshold, the corresponding pixel on the display is formed as a most dark and therefore opaque.

Thus, each source blinding 5 correspond to the display dark spots 6, and the rest of the display remains clear.

With such a simple logic translation of the image read from the camera, the image displayed on the display may be implemented by the control unit without any noticeable delay.

The distance from the eye 4 to camera 2 (tens of millimeters) is substantially less than distance from eye 4 and the camera 2 to the sources of glare 5 (tens and hundreds of meters). Therefore, the eye 4 and the camera 2 read almost the same picture as to the location of sources of glare 5. With the movements of the sources of glare 5 relative to the eye system - camera - transparent display" (due to the movement of your vehicle and/or counter), the control unit 3 moves on a transparent display 1 dark spots as moving image sources blinding 5 "picture" read Cam the swarm 2. But, as mentioned above, this picture is almost the same as the "picture", perceived by the eyes 4. As a result, each eye 4 is still blocked from moving source blinding 5 moving on the display 1 a dark spot 6.

Due to the rigid fixation of the display 1 and the camera 2 on the head of the driver, the case of rotation or displacement of the head equivalent (for the eye system - camera - transparent display") the occasion of moving sources of glare 5 discussed above. Thus, in the case of head motion eye 4 of the driver remain protected from sources of glare 5.

Because of this system in fact is the darkening of 6 bright light sources 5, which at night or during fog show the driver of the approaching oncoming car, the awareness of the driver of the approaching car, its size and the distance decreases. To eliminate this drawback is proposed darkening sources of glare 5 do not complete and partial, so that observed by the driver through the transparent display 1 sources of glare 5 has become not absolutely black and gray spots 6 (for a total transparent background). The light passing through them from sources of glare will make them bright, but not klepaski.

Transparency plots dimmable (hereinafter - the degree of C is temenia), i.e., the level of black protective dark spots 6 (black level) in the proposed system is set and, if necessary, adjusted.

Seeing on the location of sources blinding bright but not blinding!) spot, the driver does not lose information about approaching vehicles.

To set and adjust protection threshold and the degree of darkening in the proposed system has three modes: manual, automatic and mixed (combined). In manual mode, the two parameter sets the user in accordance with traffic conditions, General lighting, time of day, time of year, weather conditions, peculiarities of its vision, etc. In automatic mode, these functions are performed by the control unit 3. In mixed mode, both parameters are also set automatically by the control unit 3, but can be additionally adjusted by the user based on its individual characteristics.

1. The way to protect the eyes of the driver when the blinding headlights of an oncoming vehicle, characterized by the use of: a transparent display, which form commensurate with the headlights of an oncoming vehicle parts dimmable; digital camera; determining coordinates of intersection with the plane of the display lines, connecting the center of the eye with each source of glare, characterized in that the camera is fixed on the head of the driver, and the display is placed on the head of the driver in front of his eyes between them and the sources of blinding light, and the transparent display output maximum contrast negative image read from the camera and including image sources glare.

2. The method according to p. 1, characterized in that the transparent display to display an image read from the camera and passed through a threshold shaper with inversion of brightness, and the threshold value set by the user.

3. The method according to p. 1 or 2, characterized in that the degree of transparency plots dimming set by the user.

4. The method according to p. 3, wherein the threshold setting and the degree of dimming is performed in one of three modes user selectable: manual, automatic or combined.



 

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2 ex

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1 tbl, 12 dwg, 5 ex

FIELD: measurement equipment.

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17 cl, 9 dwg

FIELD: medicine.

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8 cl, 8 dwg, 1 tbl

FIELD: medicine.

SUBSTANCE: invention refers to medicine, particularly ophthalmology, psychophysiology, and neurology. A pupil region is exposed to light stimuli of 671 nm, 546 nm and 435 nm separately, in sequence and in a proportional combination providing a white light exposure as well. The pupil reaction parameters are recorded.

EFFECT: method enables providing more reliable diagnosis that is ensured by determining a stimulus a wave length of which matches to a resonance frequency of the perception of rhodopsin pigment in cone cells.

FIELD: information technology.

SUBSTANCE: two signals are transmitted to an image blurring device of a digital device with a display. A first signal is transmitted from a sensor for detecting stress in eye muscles which control accommodation of the eyes of the user, located near the eyes of the user in form of glasses or a headset. A second signal is generated by a program of the digital device with a display. The image blurring device generates an output signal which controls the degree of image blurriness on the display, which is proportional to the difference between two input signals. The greater the difference between the magnitude of input signals, the greater the image blurriness on the display, and the lesser the difference, the lesser the image blurriness on the display.

EFFECT: stimulating eye muscles to perform more eye accommodation work.

1 dwg

FIELD: medicine, ophthalmology.

SUBSTANCE: the present innovation deals with ophthalmological surveys to predict ischemic lesions of optic nerve during menopause in women with arterial hypertension. One should study a peak systolic linear circulatory rate (LCR) and detect the index of resistance degree (IR) in orbital artery. Additionally, one should study LCR and IR in central retinal artery (CRA), in posterior short ciliary arteries (PSCA), middle cerebral artery (MCA), then one should detect the index of vasomotor reactivity of cerebral vessels, in particular, MCA and the level of retinal light sensitivity. At decreased index of vasomotor reactivity and LCR in orbital arteries by 15% and more at increased IR by 10% and higher, in combination with decreased foveolar light sensitivity by 25% and more against physiological norm it is possible to predict the development of ischemic optic neuropathy.

EFFECT: higher reliability of prediction.

3 dwg, 2 ex, 6 tbl

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