CN212207809U - Multispectral parallel light tube athermal automatic focusing lens - Google Patents
Multispectral parallel light tube athermal automatic focusing lens Download PDFInfo
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- CN212207809U CN212207809U CN202020849936.2U CN202020849936U CN212207809U CN 212207809 U CN212207809 U CN 212207809U CN 202020849936 U CN202020849936 U CN 202020849936U CN 212207809 U CN212207809 U CN 212207809U
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Abstract
The utility model provides a multispectral collimator non-thermalization automatic focusing lens, which comprises a lens frame and a focusing group, wherein the focusing group comprises a movable lens frame, a switching block, a guide rail, a slide block, a nylon rod and a lever component, the movable lens frame is provided with a lens and fixed on the slide block, the slide block is arranged on the guide rail, the switching block is respectively connected with the movable lens frame and one end of the lever component, the other end of the lever component is in clearance fit with the nylon rod, the nylon rod is heated to expand and pushes the other end of the lever component to move towards the light emitting direction, one end of the lever component moves towards the light inlet direction and pushes the switching block to move towards the light inlet direction, thereby drive the motion of removal picture frame to advancing the light direction, when the temperature of nylon stick dropped, the other end of lever component moved to advancing the light, and the one end of lever component moves to the light-emitting direction, promotes the movement of switching piece to the light-emitting direction to drive the motion of removal picture frame to the light-emitting direction. The lens has compact structure and low cost.
Description
Technical Field
The utility model relates to an optical equipment technical field more specifically relates to a multispectral collimator does not have automatic focusing lens of heat.
Background
The collimator is one of collimators, through which a light beam from infinity can be obtained, and is mainly applied to the aspects of optical system installation, calibration, detection, calibration and the like. The existing collimator adopts a mode of matching and using a relay lens and a picture card, the relay lens and the collimator are independent, and the three are required to be precisely matched, so that the application range is limited, and the collimator can only be compatible with a standard definition module of 45-100 degrees. And the prior collimator can only work under the working distance of 150mm, and the working distance is limited.
Focusing in the prior art is usually electric, but an electric adapter plate of a motor needs to be made, so that time is consumed, and the whole structure is increased.
In the prior art, an infrared target micro collimator is constructed by adopting an optical path of an aspheric surface reflector and a plane reflector, the method reduces the volume of the collimator on the premise of the same focal length, but the processing requirement on the aspheric surface reflector is high and the cost is high in order to ensure the image quality because only one aspheric surface reflector is adopted.
SUMMERY OF THE UTILITY MODEL
The utility model relates to a solve the above-mentioned technical problem who exists among the prior art and make, its aim at provides a compact structure, multispectral collimator does not have automatic focusing lens of heat with low costs.
In order to achieve the above object, the present invention provides a multispectral collimator athermalization automatic focusing lens, comprising a lens frame and a focusing set, wherein the focusing set is disposed in the lens frame, the focusing set comprises a movable lens frame, a transfer block, a guide rail, a slider, a nylon rod and a lever member, the movable lens frame is used for mounting a lens, the movable lens frame is fixed on the slider, the slider is mounted on the guide rail, the transfer block is fixedly connected with one end of the movable lens frame and one end of the lever member, respectively, the other end of the lever member is in clearance fit with the nylon rod, when the nylon rod is heated, the other end of the lever member is pushed to move towards a light emitting direction, one end of the lever member moves towards a light entering direction, the transfer block is pushed to move towards the light entering direction, thereby the movable lens frame is driven to move towards the light entering direction, when the temperature of the nylon rod is reduced, the other end of the, one end of the lever component moves towards the light emitting direction to push the switching block to move towards the light emitting direction, so that the movable mirror frame is driven to move towards the light emitting direction, and the movable mirror frame resets to realize focusing.
The multispectral collimator tube athermal automatic focusing lens comprises a focusing group and a switching block, wherein the focusing group comprises a reset component, the reset component is fixedly connected with the switching block and is positioned at one end of the switching block, which is far away from a lever component and a nylon rod, and the switching block is driven by the reset component, so that a moving frame is driven to reset.
The multispectral collimator tube athermal automatic focusing lens comprises a reset component, a lens frame and a rotating block, wherein the rotating block is arranged on the multispectral collimator tube, the rotating block is arranged on the multispectral.
The multispectral collimator does not have automatic focusing lens of heating, wherein, the lever component includes horizontal pole, montant, bearing and bearing frame, the one end of horizontal pole with switching piece fixed connection, the other end of horizontal pole is provided with the recess that the montant passed, and the montant passes recess both ends and passes through the bearing to be fixed on the bearing frame, montant, bearing and bearing frame constitute the fulcrum of horizontal pole, the other end of horizontal pole still is provided with the recess with nylon stick clearance fit.
The multispectral collimator tube athermal automatic focusing lens further comprises a baffle fixed on the lens frame, and the vertical rod penetrates through two ends of the groove and is fixed on the bearing block and the baffle through bearings respectively.
The multispectral collimator tube athermal automatic focusing lens further comprises a front lens group and a rear lens group, the front lens group comprises a front lens frame and a front lens mounted on the front lens frame, and the rear lens group comprises a rear lens frame, a rear lens mounted on the rear lens frame, a turntable and a background plate.
The multispectral collimator tube athermal automatic focusing lens is characterized in that a heat insulation pad is arranged between the rotary disc and the background plate.
The multispectral collimator tube athermal automatic focusing lens is characterized in that a cross target is arranged on the rotary table.
The multispectral collimator tube athermal automatic focusing lens comprises a focusing group and a lens frame, wherein the focusing group further comprises a sleeve, the sleeve is fixed on the lens frame, and the nylon rod is inserted into the sleeve and extends out of the sleeve.
The multispectral collimator tube athermal automatic focusing lens is characterized in that the focusing group further comprises a blocking frame which is fixedly connected with the sleeve and seals the other end of the sleeve, which is opposite to the extending end of the nylon rod.
The multispectral parallel light tube athermal automatic focusing lens is characterized in that one end of the lever component connected with the switching block is a power arm, the other end of the lever component in clearance fit with the nylon rod is a resistance arm, and the force-arm ratio is 3: 1.
Multispectral collimator does not have automatic focusing camera lens of changing with heat and utilizes the principle of its lever and the attribute realization focusing of the peculiar expend with heat and contract with cold of nylon, can make the structure compacter, reduce cost, convenient to use.
In addition, the turntable, the background plate and the parallel light tube athermal automatic focusing lens are integrated, so that the parallelism of output light of different spectrums is consistent, the wide-range field angle can be compatible, and the application range of the lens is widened; the difficulty of simultaneously detecting different wavelength spectrums is solved, and a test reference is provided for a coaxial system of the multi-spectrum optical system.
In addition, the multispectral reflective collimator athermal automatic focusing lens can be used as a reference test device of various infrared imaging/laser aiming systems, can be widely applied to optical performance tests of various products, and lays a foundation for quality guarantee of infrared imaging products.
Drawings
Other objects and results of the present invention will be more apparent and readily appreciated by reference to the following description taken in conjunction with the accompanying drawings. In the drawings:
fig. 1 is a perspective view of the multispectral collimator athermal automatic focusing lens of the present invention;
fig. 2 is a perspective view of the focusing group of the present invention;
fig. 3a is a front view of the focusing group of the present invention;
fig. 3b is a left side view of the focusing group of the present invention;
fig. 4 is a schematic diagram of the focusing group of the present invention.
The same reference numbers in all figures indicate similar or corresponding features or functions.
Detailed Description
In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident, however, that such embodiment(s) may be practiced without these specific details.
Various embodiments according to the present invention will be described in detail below with reference to the accompanying drawings.
Fig. 1 is the stereogram of multispectral collimator athermal automatic focusing lens, fig. 2 is the stereogram that focusing was organized, as shown in fig. 1 and 2, multispectral collimator athermal automatic focusing lens includes camera lens frame 1, includes preceding mirror group 2, focusing group 3 and rear mirror group 4 along light transmission direction in proper order, wherein:
the front lens group 2 comprises a front lens frame and a front lens arranged on the front lens frame;
the focusing group 3 is arranged in the lens frame and comprises a movable lens frame 31, a switching block 32, a guide rail 33, a slider 34, a nylon rod 35 and a lever member 36, wherein the movable lens frame 31 is used for mounting a lens 311, the movable lens frame 31 is fixed on the slider 34, the slider 34 is mounted on the guide rail 33, the switching block 32 is respectively fixedly connected with one end of the movable lens frame 31 and one end of the lever member 36, the other end of the lever member 36 is in clearance fit with the nylon rod 35, when the nylon rod 35 is heated and expands, the other end of the lever member 36 is pushed to move towards the light emitting direction, one end of the lever member 36 moves towards the light inlet direction and pushes the switching block 32 to move towards the light inlet direction, so that the movable lens frame 31 is driven to move towards the light inlet direction, when the temperature of the nylon rod 35 is reduced, the other end of the lever member 36 moves towards the light inlet direction, one end, the switching block 32 is pushed to move towards the light emitting direction, so that the movable lens frame 31 is driven to move towards the light emitting direction, and the reset is realized to realize focusing;
the rear mirror group 4 includes a rear mirror frame 41, a rear mirror 42 mounted on the rear mirror frame, a rotary plate 43 and a background plate 44, and the final light is converged on the background plate 44.
The multispectral collimator heatless automatic focusing lens arranges the turntable (the chart card) in the horizontal collimator, can be compatible with a wider field angle, and improves the application range of the multispectral collimator heatless automatic focusing lens.
Preferably, one end of the lever member 36 connected with the adapter block 32 is a power arm, the other end of the lever member 36 in clearance fit with the nylon rod 35 is a resistance arm, and the force-arm ratio is 3: 1.
Preferably, a heat insulation pad 45 is disposed between the turntable 43 and the background plate 44.
In addition, preferably, the turntable 43 is provided with a cross target, and the reticle directions in the four directions are different, so that the imaging can be adjusted more clearly.
Preferably, an upper cover, a rear cover and a side cover are further mounted on the lens frame, so that the whole structure is in a sealed state.
In the multispectral parallel light tube athermal automatic focusing lens, the front lens group and the rear lens group are fixed groups relative to the focusing group.
In one embodiment, as shown in fig. 3a, the lever member 36 includes a cross bar 361, a vertical bar 362, a bearing 363, and a bearing seat 364, wherein one end of the cross bar 361 is fixedly connected to the transfer block 32, the other end of the cross bar 361 is provided with a groove through which the vertical bar 362 passes, the vertical bar 362 passes through two ends of the groove and is fixed on the bearing seat 364 through the bearing 363, the vertical bar 362, the bearing 363, and the bearing seat 364 form a fulcrum of the cross bar 361, and the other end of the cross bar 361 is further provided with a groove in clearance fit with the nylon rod 35.
Preferably, the lever member 36 further includes a baffle 365, the baffle 365 is fixed on the lens frame 1, and the vertical rod 362 passes through the two ends of the groove and is fixed on the bearing 363 seat and the baffle respectively through the bearing 363.
In one embodiment, the focusing assembly 3 further includes a reset member 37, the reset member 37 is fixedly connected to the adapting block 32 and located at an end of the adapting block 32 away from the lever member 36 and the nylon rod 35, and the adapting block is driven by the reset member 37, so as to drive the moving frame 31 to reset.
Preferably, as shown in fig. 2 and 3b, the reset member 37 includes a guide rod 371, a spring 372 and a spring sleeve 373, the spring sleeve 373 is fixed on the lens frame 1, one end of the guide rod 371 is fixed on the adapter block 32, the other end of the guide rod 371 is fixed on the spring sleeve 373, and the spring 372 is sleeved on the guide rod 371 and inserted into the spring sleeve 373.
In one embodiment, as shown in fig. 3a, the focusing group 3 further comprises a sleeve 38, the sleeve 38 is fixed on the lens frame 1, and the nylon rod 35 is inserted into the sleeve 38 and extends out of the sleeve 38.
Preferably, as shown in fig. 3a, the focusing assembly 3 further includes a blocking frame 39 fixedly connected to the sleeve 38, and sealing the other end of the sleeve 38 opposite to the end of the nylon rod 35 protruding therefrom.
In a preferred embodiment of the present invention, as shown in fig. 1 and 4, a lens 311 is disposed in an optical system of the lens barrel along a light incident direction from left to right, the lens 311 is mounted on a movable lens frame 31, the front surface of the lens is pressed by a pressing ring 312, the movable lens frame 31 is fixed to a slider 34 by a screw, the slider 34 slides on a guide rail 33, one side of a switching block 32 is connected to the movable lens frame 31 by a screw, the other side of the switching block 32 is provided with a guide rod 371, the guide rod 371 is mounted on a spring sleeve 373, the spring sleeve 373 is fixed to the lens barrel 1, a nylon rod 35 is mounted in a sleeve 38, one side of the sleeve 38 is mounted on the lens barrel 1, the other side of the sleeve 38 is sealed by a baffle frame 39, the baffle frame 39 and the sleeve 38 are connected by a screw, the baffle 365 is mounted on the lens barrel 1, one side of a vertical rod 362 is, the bearing 364 is mounted on the lens frame 1. When nylon stick 35 is heated and takes place the inflation, can promote horizontal pole 361 one side upward movement, because the bearing is all equipped with to horizontal pole 361 both sides, so, the opposite side of horizontal pole 361 can downstream, promotes the downstream side motion of switching piece 32 to drive and remove picture frame 31 forward motion, when the temperature of nylon stick 35 descends, its volume diminishes, makes horizontal pole 361 remove to its direction, is equipped with spring 372 in spring sleeve 373, drives its back motion, thereby resets, realizes the focusing.
The utility model discloses a peculiar expend with heat and contract with cold's of nylon attribute utilizes the principle of its lever (realizes through the horizontal pole), makes focusing realize more easily, can make the structure compacter, and reduce cost, it is more convenient to use.
While the foregoing disclosure shows illustrative embodiments of the invention, it should be noted that various changes and modifications could be made herein without departing from the scope of the invention as defined by the appended claims. Furthermore, although elements of the invention may be described or claimed in the singular, the plural is contemplated unless limitation to the singular is explicitly stated.
Claims (10)
1. A multispectral collimator tube athermal automatic focusing lens comprises a lens frame and is characterized by further comprising a focusing group arranged in the lens frame, wherein the focusing group comprises a movable lens frame, a switching block, a guide rail, a slide block, a nylon rod and a lever component, the movable lens frame is used for mounting lenses, the movable lens frame is fixed on the slide block, the slide block is mounted on the guide rail, the switching block is fixedly connected with the movable lens frame and one end of the lever component respectively, the other end of the lever component is in clearance fit with the nylon rod, when the nylon rod expands due to heating, the other end of the lever component is pushed to move towards a light emitting direction, one end of the lever component moves towards a light inlet direction, the switching block is pushed to move towards the light inlet direction, the movable lens frame is driven to move towards the light inlet direction, and when the temperature of the nylon rod drops, the other end of the lever component moves towards the light inlet direction, one end of the lever component moves towards the light emitting direction to push the switching block to move towards the light emitting direction, so that the movable mirror frame is driven to move towards the light emitting direction, and the movable mirror frame resets to realize focusing.
2. The multispectral collimator heatless automatic focusing lens as claimed in claim 1, wherein the focusing assembly further comprises a reset member, the reset member is fixedly connected with the adapting block and is located at one end of the adapting block away from the lever member and the nylon rod, and the adapting block is driven by the reset member, so that the movable frame is driven to reset.
3. The multispectral collimator athermal automatic focusing lens of claim 2, wherein the reset member comprises a guide rod, a spring and a spring sleeve, the spring sleeve is fixed on the lens frame, one end of the guide rod is fixed on the adapter block, the other end of the guide rod is fixed on the spring sleeve, and the spring sleeved on the guide rod is inserted into the spring sleeve.
4. The multispectral collimator heatless automatic focusing lens as claimed in claim 1, wherein the lever member comprises a cross bar, a vertical bar, a bearing and a bearing seat, one end of the cross bar is fixedly connected with the switching block, the other end of the cross bar is provided with a groove through which the vertical bar passes, the vertical bar passes through the two ends of the groove and is fixed on the bearing seat through the bearing, the vertical bar, the bearing and the bearing seat form a fulcrum of the cross bar, and the other end of the cross bar is further provided with a groove in clearance fit with the nylon rod.
5. The multispectral collimator heatless automatic focusing lens of claim 4, further comprising a baffle fixed on the lens frame, wherein the vertical rod passes through the two ends of the groove and is fixed on the bearing seat and the baffle through bearings.
6. The multispectral collimator athermal automatic focusing lens of claim 1, further comprising a front lens group and a rear lens group, wherein the front lens group comprises a front frame and a front lens mounted on the front frame, and the rear lens group comprises a rear frame, a rear lens mounted on the rear frame, and a turntable and a background plate.
7. The multispectral collimator athermal autofocus lens of claim 6, wherein a thermal insulation pad is disposed between the rotating disk and the background plate.
8. The multispectral collimator athermal automatic focusing lens of claim 1, wherein the focusing group further comprises a sleeve fixed on the lens frame, the nylon rod being inserted into the sleeve and protruding from the sleeve.
9. The athermal automatic focusing lens of claim 8, wherein the focusing assembly further comprises a blocking frame fixedly connected to the sleeve for sealing the other end of the sleeve opposite to the end of the nylon rod protruding out.
10. The multispectral parallel light-pipe athermal automatic focusing lens according to claim 1, wherein one end of the lever component connected with the adapter block is a power arm, the other end of the lever component in clearance fit with the nylon rod is a resistance arm, and the force-arm ratio is 3: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020849936.2U CN212207809U (en) | 2020-05-20 | 2020-05-20 | Multispectral parallel light tube athermal automatic focusing lens |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020849936.2U CN212207809U (en) | 2020-05-20 | 2020-05-20 | Multispectral parallel light tube athermal automatic focusing lens |
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| CN212207809U true CN212207809U (en) | 2020-12-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113448056A (en) * | 2021-06-16 | 2021-09-28 | 江西晶浩光学有限公司 | Camera module, camera device and electronic equipment |
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- 2020-05-20 CN CN202020849936.2U patent/CN212207809U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113448056A (en) * | 2021-06-16 | 2021-09-28 | 江西晶浩光学有限公司 | Camera module, camera device and electronic equipment |
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