Electrodynamic servounit and focusing lens

FIELD: electricity.

SUBSTANCE: rotor is connected to the stator via an elastic connecting piece. The stator bush is fastened to the rotor bushing. One of the stator bush and the rotor bush is a bush made of a material with permanent magnet properties, and the other is a bush made of non-magnetic material. The assembly to which the nonmagnetic material bush belongs comprises a pre-magnetizable element and an excitation coil. The pre-magnetized element is made of a material with the properties of a permanent magnet or a magnetizable material and is fixed relative to the sleeve of a material with permanent magnet properties. The resilient coupling is in a state of balance of forces in the event that no power is supplied to the field coil due to the presence of a pre-existing magnetic field force between the pre-magnetizable element and the core material sleeve.

EFFECT: reduced excitation current and reduced power consumption.

11 cl, 6 dwg

 



 

Same patents:

FIELD: physics.

SUBSTANCE: lens actuator has a lens holding element, a plurality of polymer actuating elements, each having a driving surface which is orthogonal to the optical axis of the lens and which are mounted such that corresponding driving surfaces lie opposite each other along the optical axis of the lens, as well as an element which directly or indirectly fixes one end of each polymer actuating element, and a connecting element which connects the other end of each polymer actuating element and the end portion of the lens holding element.

EFFECT: designing a lens actuator wherein the lens can move with good accuracy in the direction of its optical axis.

11 cl, 14 dwg

FIELD: medicine.

SUBSTANCE: invention relates to medicine, namely to ophthalmology and can be applied in carrying out collagen crosslinking of cornea of patients with initial keratoconus. Zone of ultraviolet irradiation is formed by means of soft cosmetic contact lens. In the central part of lens made is opening, whose form corresponds to ectasia of patient's cornea by personal data of keratotopography. Lens if coloured in black colour.

EFFECT: method makes it possible to protect limb area of eye and zone of cornea, which does not require irradiation, prevents dispersion of ultraviolet irradiation.

1 ex

Camera module // 2476913

FIELD: physics.

SUBSTANCE: camera module has a lens holder element for holding an optical system for capturing images, and a drive module for moving the lens holder element along the optical axis of the optical system for capturing images, wherein the lens holder element is a cast component which is cast using a mould and has a cast gate area remaining on its surface which corresponds to the cast gate of the mould, and the drive module has a coil placed on the exterior outline of the lens holder element, and a magnet facing the exterior outline of the coil. According to the invention, an area of the exterior outline of the lens holder element and an area of the inner outline of the coil bound a cut for filling with an adhesive, which is open in a direction parallel to the optical axis. The cut for filling with an adhesive has a bottom surface located on the lens holder element and facing a direction parallel to the optical axis. Said cast gate area is located on said bottom surface and the area of the exterior outline of the lens holder element and the area of the inner outline of the coil are joined by the adhesive which fills the cut for filling with adhesive, and the cast gate area is immersed in the adhesive.

EFFECT: efficient prevention of formation of dust from the cast gate area without need for a special treatment process.

4 cl, 32 dwg

FIELD: mechanics.

SUBSTANCE: invention refers to design of binoculars, and namely to pancratic systems of binocular with drive mechanism for smooth change of magnification. According to the invention, pancratic system of binocular with drive mechanism for smooth change of magnification includes housing consisting of two halves hinged to central axis, each of which is equipped with pancratic unit containing the main and additional tubes, each of which is equipped with gear wheel, central gear wheel installed coaxially to the above central axis and connected to assembly of its drive into rotation, two main intermediate gear wheels which connect the above central gear wheel with the above gear wheels of the main tubes; at that, one of the halves of housing is equipped with gear element installed in a fixed manner and coaxially to central gear wheel, and the other housing half is equipped with additional intermediate gear wheel installed coaxially to the main intermediate gear wheel on this housing half and attaching the above gear element to gear wheel on additional tube of pancratic unit on the above housing half.

EFFECT: development of simple, cheap and reliable pancratic system of binocular.

2 cl, 3 dwg

FIELD: optical instrument engineering.

SUBSTANCE: lens has frame with casing inside which casing a number of lenses are glues, intermediate gaskets-rings are mounted inside air gaps among lenses. Lens also has fixing and adjusting members. Lens optical force adjustment compensator is mounted in front of lenses. Compensator is made in form of flat-parallel plate and placed inside frame. Frame is aligned with lenses in fixing member, which springs-load the lens inside case and can rotate around its axis. Flat-parallel plate is mounted at angle to optical axes of lenses. Before adjustment the lenses are put on glue inside the case; intermediate rings-gaskets have to be also installed. Lenses are fixed with fixing elements and locked. Final adjustment of lens is performed after fixing and locking units of lens by means of additional compensator due to rotation of frame provided with flat-parallel plate around its axis or till optical axes of objective lenses are matched and subsequently locked.

EFFECT: improved precision of quality of stable adjustment.

2 cl, 1 dwg

The invention relates to the field of ophthalmology, namely the creation of ophthalmic lenses such as spectacle lenses, contact lenses, intraocular lenses and other lenses with reduced astigmatism

The invention relates to an optical instrument, in particular to the mechanisms of movement of the optical components in order to change the focal length or focus

The invention relates to opto-mechanical industry and can be used, for example, in large-sized lenses to correct their defocus by moving the compensation lens along the axis of the lens

FIELD: optical instrument engineering.

SUBSTANCE: lens has frame with casing inside which casing a number of lenses are glues, intermediate gaskets-rings are mounted inside air gaps among lenses. Lens also has fixing and adjusting members. Lens optical force adjustment compensator is mounted in front of lenses. Compensator is made in form of flat-parallel plate and placed inside frame. Frame is aligned with lenses in fixing member, which springs-load the lens inside case and can rotate around its axis. Flat-parallel plate is mounted at angle to optical axes of lenses. Before adjustment the lenses are put on glue inside the case; intermediate rings-gaskets have to be also installed. Lenses are fixed with fixing elements and locked. Final adjustment of lens is performed after fixing and locking units of lens by means of additional compensator due to rotation of frame provided with flat-parallel plate around its axis or till optical axes of objective lenses are matched and subsequently locked.

EFFECT: improved precision of quality of stable adjustment.

2 cl, 1 dwg

FIELD: mechanics.

SUBSTANCE: invention refers to design of binoculars, and namely to pancratic systems of binocular with drive mechanism for smooth change of magnification. According to the invention, pancratic system of binocular with drive mechanism for smooth change of magnification includes housing consisting of two halves hinged to central axis, each of which is equipped with pancratic unit containing the main and additional tubes, each of which is equipped with gear wheel, central gear wheel installed coaxially to the above central axis and connected to assembly of its drive into rotation, two main intermediate gear wheels which connect the above central gear wheel with the above gear wheels of the main tubes; at that, one of the halves of housing is equipped with gear element installed in a fixed manner and coaxially to central gear wheel, and the other housing half is equipped with additional intermediate gear wheel installed coaxially to the main intermediate gear wheel on this housing half and attaching the above gear element to gear wheel on additional tube of pancratic unit on the above housing half.

EFFECT: development of simple, cheap and reliable pancratic system of binocular.

2 cl, 3 dwg

Camera module // 2476913

FIELD: physics.

SUBSTANCE: camera module has a lens holder element for holding an optical system for capturing images, and a drive module for moving the lens holder element along the optical axis of the optical system for capturing images, wherein the lens holder element is a cast component which is cast using a mould and has a cast gate area remaining on its surface which corresponds to the cast gate of the mould, and the drive module has a coil placed on the exterior outline of the lens holder element, and a magnet facing the exterior outline of the coil. According to the invention, an area of the exterior outline of the lens holder element and an area of the inner outline of the coil bound a cut for filling with an adhesive, which is open in a direction parallel to the optical axis. The cut for filling with an adhesive has a bottom surface located on the lens holder element and facing a direction parallel to the optical axis. Said cast gate area is located on said bottom surface and the area of the exterior outline of the lens holder element and the area of the inner outline of the coil are joined by the adhesive which fills the cut for filling with adhesive, and the cast gate area is immersed in the adhesive.

EFFECT: efficient prevention of formation of dust from the cast gate area without need for a special treatment process.

4 cl, 32 dwg

FIELD: medicine.

SUBSTANCE: invention relates to medicine, namely to ophthalmology and can be applied in carrying out collagen crosslinking of cornea of patients with initial keratoconus. Zone of ultraviolet irradiation is formed by means of soft cosmetic contact lens. In the central part of lens made is opening, whose form corresponds to ectasia of patient's cornea by personal data of keratotopography. Lens if coloured in black colour.

EFFECT: method makes it possible to protect limb area of eye and zone of cornea, which does not require irradiation, prevents dispersion of ultraviolet irradiation.

1 ex

FIELD: physics.

SUBSTANCE: lens actuator has a lens holding element, a plurality of polymer actuating elements, each having a driving surface which is orthogonal to the optical axis of the lens and which are mounted such that corresponding driving surfaces lie opposite each other along the optical axis of the lens, as well as an element which directly or indirectly fixes one end of each polymer actuating element, and a connecting element which connects the other end of each polymer actuating element and the end portion of the lens holding element.

EFFECT: designing a lens actuator wherein the lens can move with good accuracy in the direction of its optical axis.

11 cl, 14 dwg

FIELD: physics, optics.

SUBSTANCE: invention relates to lens holders and can be used in optical engineering. The lens holder includes a rotatable lug ring, a lens holding cylinder arranged on the outer circumference of the lug ring and configured to hold the lens, and a barrier cylinder configured to hold the lens barrier. The barrier cylinder includes a cylindrical portion, a first protrusion which extends from the cylindrical portion to the image plane, and a cam interlocking portion which is interlocked with a cam groove of the lug ring. The lens holding cylinder includes a cylindrical portion and a second protrusion. The second protrusion of the lens holding cylinder overlaps with the cam interlocking portion of the barrier cylinder in a radial direction, perpendicular to the direction of the optical axis.

EFFECT: high image quality.

7 cl, 5 dwg

Lens frame // 2618490

FIELD: physics.

SUBSTANCE: lens frame has a telescopic design, in which the covered part of the frame and its covering part are moved against each other. The design contains a plurality of annular holders (201 and 202), which are located in different positions against the optical axis direction between the covered part of the frame (11) and the covering part of the frame (12) for supporting the bearing balls (30). The bearing balls (30) are capable of rolling in contact with the covered part of the frame (11) and the covering part of the frame (12). The said annular holders (201 and 202) are provided with a floating support in the direction parallel to the optical axis in accordance with the movement of the bearing balls (30) by rolling. The support for the covered part of the frame (11) and the covering part of the frame (12), which are movable against each other, is provided by the ball bearings.

EFFECT: enabling smooth and accurate movement of the lens frame parts against one another in case of their larger size and large weight, as well as eliminating short stop and backlash.

3 cl 4 dwg

FIELD: physics.

SUBSTANCE: zoom/focus changing device comprises: the first lens focus tube, in which the first group of the focusing lens is mounted; the first lens tube with a variable focal length, in which the first group of a lens with a variable focal length is installed; the first ultrasonic motor, the rotor rotation axis of which is coaxial with the first lens focus tube; and the second ultrasonic motor, the rotor rotation axis of which is coaxial with the first lens focus tube; the stator of the first ultrasonic motor being the first fixing tube; the stator of the second ultrasonic motor is the first fixing tube.

EFFECT: simplifying the lens installation, miniaturizing the device.

11 cl, 9 dwg

FIELD: electricity.

SUBSTANCE: rotor is connected to the stator via an elastic connecting piece. The stator bush is fastened to the rotor bushing. One of the stator bush and the rotor bush is a bush made of a material with permanent magnet properties, and the other is a bush made of non-magnetic material. The assembly to which the nonmagnetic material bush belongs comprises a pre-magnetizable element and an excitation coil. The pre-magnetized element is made of a material with the properties of a permanent magnet or a magnetizable material and is fixed relative to the sleeve of a material with permanent magnet properties. The resilient coupling is in a state of balance of forces in the event that no power is supplied to the field coil due to the presence of a pre-existing magnetic field force between the pre-magnetizable element and the core material sleeve.

EFFECT: reduced excitation current and reduced power consumption.

11 cl, 6 dwg

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