CN213092087U - Laser illuminator capable of correcting eccentric axis - Google Patents
Laser illuminator capable of correcting eccentric axis Download PDFInfo
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- CN213092087U CN213092087U CN202022380989.7U CN202022380989U CN213092087U CN 213092087 U CN213092087 U CN 213092087U CN 202022380989 U CN202022380989 U CN 202022380989U CN 213092087 U CN213092087 U CN 213092087U
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Abstract
The utility model discloses a laser illuminator capable of correcting off-axis, which comprises an optical system and a coaxial adjusting component, wherein the coaxial adjusting component comprises a vertical direction adjusting piece, a horizontal direction adjusting piece and an adjusting piece fixing piece, the vertical direction adjusting piece, the horizontal direction adjusting piece and the adjusting piece fixing piece are connected together in a nesting mode, a horizontal adjusting space is left between the horizontal direction adjusting piece and the adjusting piece fixing piece, and a vertical adjusting space is left between the vertical direction adjusting piece and the horizontal direction adjusting piece; the optical fiber connecting piece is installed in the vertical direction adjusting piece and is provided with a horizontal adjusting jackscrew and a vertical adjusting jackscrew, and the skewness of the optical fiber connecting piece can be adjusted by rotating the jackscrew. The utility model discloses can reduce the skew at laser illuminator zoom in-process light spot center.
Description
Technical Field
The utility model relates to a night vision control field, concretely relates to laser illuminator of correctable off-axis.
Background
The laser illuminator mainly utilizes near-infrared laser beams, is used in cooperation with an infrared night vision device and a security camera monitor, is mainly used for light supplement to realize the effects of observing night targets and reversely interfering the target monitor and the like, and can be widely applied to the fields of security and defense, military reconnaissance, field search and rescue, scientific research and investigation and the like.
In the use process of the laser illuminator, in order to observe the overall appearance of a target or search the target in the largest range, the maximum light spot is required to cover the whole visual field of the camera as much as possible; meanwhile, in order to prolong the observation distance and carefully observe a target with a small distance, the minimum light spot of the laser should be small enough to improve the power density of the light spot.
As technology develops, the ratio of the maximum to minimum spot diameter of the laser illuminator becomes larger, the target is found at the maximum spot and then is zoomed to the minimum spot to track the target, which is a typical application of the laser illuminator, and this puts higher demands on the coaxiality of the illuminator. However, the currently published zoom laser illuminators, such as patents 201510264944.4 and 201110185055.0, all have the problem of easy off-axis, and an easy off-axis correction method cannot be provided, that is, when the laser is multiplied from the maximum light spot to the minimum light spot, the central point of the light spot is shifted, the irradiation positions are inconsistent, and the target is lost, which obviously fails to meet the requirements in the aspects of military aiming, tracking and positioning, and the like, and greatly limits the function of the laser illuminator in the field of security and military. Therefore, a high-coaxiality laser illuminator with easy off-axis correction is needed to improve the precision of laser aiming and reduce the central deviation to several milliradians or even a few tenths of milliradians to meet the actual requirement.
Disclosure of Invention
To the defect of prior art, the utility model provides a can revise the laser illuminator of off-axis can reduce the skew at laser illuminator variable magnification in-process light spot center.
In order to solve the technical problem, the utility model discloses a technical scheme is: a laser illuminator capable of correcting eccentric axis comprises an optical system and an alignment assembly, wherein the alignment assembly comprises a vertical direction adjusting piece, a horizontal direction adjusting piece and an adjusting piece fixing piece; the vertical direction adjusting piece is embedded in the horizontal direction adjusting piece, and a vertical adjusting space is reserved between the vertical direction adjusting piece and the horizontal direction adjusting piece; transfer coaxial assembly to install on the lens cone, the fiber connector is installed in vertical direction regulating part, is equipped with horizontal adjustment jackscrew and vertical regulation jackscrew, and the free end of horizontal adjustment jackscrew passes the regulating part mounting and extends to horizontal adjustment space, and the free end of vertical regulation jackscrew passes the regulating part and fixes and extend to vertical adjustment space.
Furthermore, the adjusting part fixing part is circular or square, a cross groove is formed in the adjusting part fixing part, and the horizontal adjusting part is embedded in the cross groove.
Further, the horizontal direction regulating part is cross-shaped with cross slot assorted, and it has the holding tank to open in the horizontal direction regulating part, is circular in the middle of the holding tank, and both ends are square, and vertical direction regulating part inlays in the holding tank.
Further, vertical direction regulating part and holding tank phase-match, the centre is circular, and both ends are square, and it has the round hole to open in the middle of the vertical direction regulating part, and the optic fibre connecting piece is installed in the round hole.
Furthermore, the depth of the cross groove is the same as the thickness of the horizontal adjusting piece, the position of the cross groove, which is provided with the horizontal adjusting space, is marked as a part A, the part of the horizontal adjusting piece, which is embedded in the part A, is marked as a part B, and the width of the part A is the same as that of the part B.
Furthermore, the depth of the accommodating groove is the same as the thickness of the vertical direction adjusting piece, and the width of the square part of the accommodating groove is the same as the width of the square part of the vertical direction adjusting piece.
The utility model has the advantages that: the device for correcting the eccentric axis is additionally arranged on the traditional laser lighting antenna, the eccentric axis phenomenon of the laser lighting device can be corrected in a mode of adjusting the jackscrew, so that the light spot coaxiality of the lighting device is greatly improved, and meanwhile, the device is small in structure, simple and convenient to operate, easy to realize and capable of greatly improving the practicability of the zooming laser lighting device.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of the structure of the adjuster mount.
Fig. 3 is a schematic structural view of the horizontal direction adjustment member.
Fig. 4 is a schematic structural view of the vertical direction adjustment member.
Fig. 5 is a schematic structural view of the coaxial adjusting assembly.
In the figure: 1. the laser illuminator comprises a laser illuminator lens, 2, an inner lens cone, 3, an outer lens cone, 4, a lens frame, 5, a linear groove, 6, a transmission rod, 7, a motor, 8, a transmission gear, 9, an outer gear ring, 10, an optical fiber connecting piece, 11, a vertical direction adjusting piece, 12, a horizontal direction adjusting piece, 13, an adjusting piece fixing piece, 14, an optical fiber, 15, a laser, 16, a vertical adjusting jackscrew, 17, a horizontal adjusting jackscrew, 18, a cross groove, 19 and an accommodating groove.
Detailed Description
The invention is further described with reference to the following figures and specific embodiments.
Example 1
The spot center of the laser illuminator is deviated because the inner lens and the end face of the optical fiber are not in the ideal optical axis position due to the tolerance in the processing and assembling processes. The position displacement is divided into inclination and deviation, wherein the former means that the normal of the lens or the optical fiber end surface is not parallel to the optical axis, and the latter means that the center of the lens or the optical fiber end surface is not on the optical axis and has deviation in the vertical axis direction. After analysis and test, in the process of changing the size of the laser spot, the inclination and the deviation of any lens or the end face of the optical fiber can cause the center of the spot to move towards a certain direction. The influence of the deviation of the center of the light spot on the coaxiality is far greater than the influence of the inclination, so that the coaxiality of the laser illuminator can be greatly improved as long as the deviation of the lens and the end face of the optical fiber in the vertical axis direction can be effectively corrected. And the deviation of each lens and the end face of the optical fiber towards the same direction can generate similar influence on the coaxiality, so that the deviation of the end face of the optical fiber towards the opposite direction can be controlled to make up the influence caused by the deviation of the lens, the integral deviation is reduced to the minimum, and the effect of improving the coaxiality is achieved.
As shown in fig. 1, the optical system of the laser illuminator in this embodiment includes a laser illuminator lens 1, an optical fiber 14, and a laser 15, and the end face of the optical fiber is the light-emitting end face of the optical fiber 14. The lens cone structure of the laser illuminator comprises an inner lens cone 2, an outer lens cone 3, a lens frame 4 and a motor 7; the lens frame 4 is used for fixing the lens 1, the inner lens cone 2 is provided with a linear groove 5, the outer lens cone is provided with a cam groove, the transmission rod 6 penetrates through the cam groove and the linear groove and then is fixed on the lens frame, and the lens frame 4 can be driven to axially move by rotating the outer lens cone. A transmission gear 8 is fixed on the shaft of the motor 7, the transmission gear 8 is meshed with an outer gear ring fixed on the outer lens cone 3, and the outer lens cone can be driven to rotate through the rotation of the motor.
The present embodiment is characterized in that the adjusting shaft assembly, i.e., the vertical direction adjusting member 11, the horizontal direction adjusting member 12 and the adjusting member fixing member 13, is added. The three components are positioned at the optical fiber connecting piece and jointly play a role in adjusting the vertical axis direction offset of the optical fiber end face, wherein the vertical direction adjusting piece 11 can adjust the position of the optical fiber connecting piece 10 in the vertical direction by rotating a jackscrew, the horizontal direction adjusting piece 12 can adjust the position of the optical fiber connecting piece 10 in the horizontal direction by rotating the jackscrew, and the fixing piece 13 is used for fixing the position of the whole alignment shaft assembly relative to the illuminator lens barrel.
In this embodiment, the vertical direction adjusting member 11, the horizontal direction adjusting member 12 and the adjusting member fixing member 13 are connected together in a nested manner, a horizontal adjusting space is left between the horizontal direction adjusting member 12 and the adjusting member fixing member 13, a vertical adjusting space is left between the vertical direction adjusting member 11 and the horizontal direction adjusting member 12, the horizontal/vertical adjusting space positions of the horizontal direction adjusting member 12 and the vertical direction adjusting member 11 can be adjusted by rotating the jackscrew, so as to adjust the offset of the optical fiber end surface in the vertical axis direction,
as shown in fig. 2, fig. 3 and fig. 4, schematic structural diagrams of the components of the laser illuminator tuning axis assembly are provided. Fig. 2 is a schematic structural diagram of the adjuster fastener 13, the adjuster fastener 13 is circular, and may be designed into a square shape or other shapes in other embodiments, the adjuster fastener 13 is fixed on the illuminator, and has a cross slot 18 in its inner side, the depth of the cross slot 18 is the same as the thickness of the horizontal adjuster 12, so as to ensure that the horizontal adjuster 12 is not axially moved after being nested into the adjuster fastener 13; the position of the cross groove 18 where the horizontal adjusting space is reserved is marked as part A, the part of the horizontal adjusting piece 12 embedded in the part A is marked as part B, the width of the part A is the same as that of the part B, and the horizontal adjusting piece 12 is guaranteed not to move in the vertical direction after being embedded in the groove.
A jackscrew hole is reserved on the outer side of the part A, the horizontal adjusting jackscrew 17 penetrates through the jackscrew hole and then jacks to the part B of the horizontal adjusting part, and the horizontal position of the horizontal adjusting part can be adjusted by screwing or unscrewing the jackscrew.
Fig. 3 is a schematic structural view of the horizontal adjusting member 12. The adjusting piece is nested in a cross groove 18 of the adjusting piece fixing piece 13, the shape of the adjusting piece is a cross shape matched with the cross groove 18, an accommodating groove 19 is formed in the horizontal direction adjusting piece 13, the middle of the accommodating groove 19 is circular, two ends of the accommodating groove are square, and the vertical direction adjusting piece 11 is embedded in the accommodating groove 19.
In the embodiment, the depth of the accommodating groove is the same as the thickness of the vertical direction adjusting piece, so that the vertical direction adjusting piece 11 is prevented from moving axially after being nested in the groove; the width of the square part of the accommodating groove is the same as that of the square part of the vertical direction adjusting piece, so that the vertical direction adjusting piece 11 is prevented from moving in the horizontal direction after being nested into the groove; the vertical adjusting space is left between the square part of the accommodating groove and the square part of the vertical adjusting piece.
The outer side of the position of the horizontal direction adjusting part 12 is provided with a jackscrew hole, a vertical adjusting jackscrew 16 can penetrate through the adjusting part fixing part 13 and the jackscrew hole and then be jacked to the center of the square position of the vertical direction adjusting part 11, and the vertical direction of the vertical direction adjusting part can be adjusted by screwing or unscrewing the vertical adjusting jackscrew.
Fig. 4 is a schematic structural view of the vertical direction adjustment member 11. It nests in the holding tank of vertical direction regulating part 12, and the centre is circular, and both ends are square, and it has the round hole to open in the middle of the vertical direction regulating part, and the round hole internal diameter is the same with the optic fibre connecting piece external diameter, can tightly overlap on the optic fibre connecting piece, and when adjusting the jackscrew, vertical direction regulating part 11 can drive optic fibre connecting piece 10 and remove in the perpendicular to optical axis direction together.
Fig. 5 is a schematic structural view after the coaxial assemblies are adjusted and assembled. During the use, the optical fiber connector is placed into the round hole of the vertical direction adjusting piece 11, and meanwhile, the fixing screw of the optical fiber connector is screwed in, and the fixing screw does not need to be screwed at the moment. The light source is switched on and the laser illuminator is controlled to change the light spot from large to small, the deviation trend of the center of the light spot is observed, the horizontal/vertical adjusting jackscrew is adjusted to enable the optical fiber connecting piece 10 to move in the direction opposite to the deviation direction of the light spot, then the deviation trend of the light spot is observed, the light spot deviation axis can be corrected by repeated adjustment, and the coaxiality is improved.
The vertical direction adjusting member 11 and the optical fiber connector 10 can be changed in vertical position by screwing and unscrewing the vertical adjusting jack 16; the position of the horizontal direction adjusting piece 12 in the horizontal direction can be changed by screwing and unscrewing the horizontal adjusting jackscrew 17, and meanwhile, the vertical direction adjusting piece 11 is nested in the groove of the horizontal direction adjusting piece 12, so that when the horizontal direction adjusting piece 12 moves in the horizontal direction, the vertical direction adjusting piece 11 and the optical fiber connecting piece 10 can be driven to move in the same direction, and the purpose of adjusting the position of the optical fiber connecting piece 10 in the horizontal direction and the vertical direction is achieved. This ensures that the adjustment means can control the movement of the fibre optic connector 10 in the horizontal and vertical directions respectively, and that when adjusting in one direction no movement occurs in the other direction.
And after the adjustment is finished, the adjusting jackscrews 16 and 17 and the fixing screws of the optical fiber connecting piece are screwed down.
The foregoing description is only for the basic principles and preferred embodiments of the present invention, and modifications and substitutions made by those skilled in the art according to the present invention belong to the protection scope of the present invention.
Claims (6)
1. An off-axis adjustable laser illuminator, comprising: the optical system comprises an optical system and a coaxial adjusting assembly, wherein the coaxial adjusting assembly comprises a vertical direction adjusting piece, a horizontal direction adjusting piece and an adjusting piece fixing piece; the vertical direction adjusting piece is embedded in the horizontal direction adjusting piece, and a vertical adjusting space is reserved between the vertical direction adjusting piece and the horizontal direction adjusting piece; transfer coaxial assembly to install on the lens cone, the fiber connector is installed in vertical direction regulating part, is equipped with horizontal adjustment jackscrew and vertical regulation jackscrew, and the free end of horizontal adjustment jackscrew passes the regulating part mounting and extends to horizontal adjustment space, and the free end of vertical regulation jackscrew passes the regulating part and fixes and extend to vertical adjustment space.
2. The correctable off-axis laser illuminator of claim 1, wherein: the adjusting part fixing part is circular or square, a cross groove is formed in the adjusting part fixing part, and the horizontal adjusting part is embedded in the cross groove.
3. The correctable off-axis laser illuminator of claim 2, wherein: horizontal direction regulating part for with cross groove assorted cross, it has the holding tank to open in the horizontal direction regulating part, is circular in the middle of the holding tank, and both ends are square, and vertical direction regulating part inlays in the holding tank.
4. The correctable off-axis laser illuminator of claim 3, wherein: vertical direction regulating part and holding tank phase-match, the centre is circular, and both ends are square, and it has the round hole to open in the middle of the vertical direction regulating part, and the optic fibre connecting piece is installed in the round hole.
5. The correctable off-axis laser illuminator of claim 3, wherein: the depth of the cross groove is the same as the thickness of the horizontal adjusting piece, the position of the cross groove, which is provided with the horizontal adjusting space, is marked as an A part, the part of the horizontal adjusting piece, which is embedded in the A part, is marked as a B part, and the width of the A part is the same as that of the B part.
6. The correctable off-axis laser illuminator of claim 4, wherein: the depth of the accommodating groove is the same as the thickness of the vertical direction adjusting piece, and the width of the square part of the accommodating groove is the same as the width of the square part of the vertical direction adjusting piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022380989.7U CN213092087U (en) | 2020-10-23 | 2020-10-23 | Laser illuminator capable of correcting eccentric axis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022380989.7U CN213092087U (en) | 2020-10-23 | 2020-10-23 | Laser illuminator capable of correcting eccentric axis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213092087U true CN213092087U (en) | 2021-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022380989.7U Active CN213092087U (en) | 2020-10-23 | 2020-10-23 | Laser illuminator capable of correcting eccentric axis |
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| Country | Link |
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| CN (1) | CN213092087U (en) |
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- 2020-10-23 CN CN202022380989.7U patent/CN213092087U/en active Active
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