CN212135033U - Optical axis adjusting component convenient to adjust light path - Google Patents
Optical axis adjusting component convenient to adjust light path Download PDFInfo
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- CN212135033U CN212135033U CN201922439335.4U CN201922439335U CN212135033U CN 212135033 U CN212135033 U CN 212135033U CN 201922439335 U CN201922439335 U CN 201922439335U CN 212135033 U CN212135033 U CN 212135033U
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- worm
- wedge
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- worm wheel
- worm gear
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Abstract
The utility model discloses an optical axis adjusting component convenient for adjusting an optical path, which comprises an optical wedge mounting seat, two worm wheel pressing rings, two worm wheels, two wedge mirror worm wheel space rings, a worm wheel pressing plate, two worms, a worm pressing plate and a dustproof mirror; the two wedge mirrors are respectively fixed in the central holes of the two worm gears; air vents are arranged between the two wedge mirrors and the two worm gears; the two worm gears are coaxially arranged in the optical wedge mounting seat; a worm wheel space ring is arranged between the two worm wheels; worm wheel pressing rings are respectively arranged on the other sides of the two worm wheels and the second worm wheel; the worm pressing plate is fixed on the optical wedge mounting seat; the two worms and the second worm are respectively meshed with the two worm wheels; two ends of each worm are sleeved with worm gaskets; the dustproof mirror is fixed at one end of the optical wedge mounting seat; the worm pressing plate is fixedly arranged at the other end of the optical wedge mounting seat and provides pretightening force; the excircle of the worm pressure plate is sealed with the optical wedge mounting seat. The optical axis adjustment inside this subassembly can follow the instrument outside to the instrument satisfies the requirement of light path gas tightness and shock-resistant vibration.
Description
Technical Field
The utility model belongs to light path adjustment field, especially an optical axis adjustment subassembly convenient to adjust light path.
Background
The optical axis of the optical instrument is required to be adjusted slightly, and a reflecting mirror or a wedge mirror can be used. The optical wedges used in pairs are more in use due to the advantages of convenience in adjustment, high precision, small occupied space and the like. For example, the reflector type optical axis adjusting device is not high in adjusting precision, long in time, not strong in anti-vibration capability due to the fact that an optical axis changes, and inconvenient to adjust due to the fact that the optical axis needs to be installed in an optical path.
Because the optical axis is generally inside the instrument, need open the instrument when directly using mated optical wedge, carry out the optical axis adjustment again, it is comparatively inconvenient to use. And the conventional wedge mirror is adjusted manually, a product needs to be opened when an optical path is adjusted, the wedge mirror is directly rotated, so that the use is inconvenient, the optical path cannot be sealed, dust is easily brought to the surface of an optical part, and the optical part is damaged by the dust when the energy density is high. For large systems, sometimes opening the product results in the need to readjust the optical path of the entire system.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an optical axis adjustment subassembly convenient to adjust light path to realize satisfying the light path gas tightness and the requirement of shock-resistant vibration simultaneously from the outside adjustment to the inside optical axis of instrument.
Realize the utility model discloses the technical solution of purpose does:
an optical axis adjusting assembly convenient for adjusting an optical path comprises an optical wedge mounting seat, a first worm wheel pressing ring, a second worm wheel pressing ring, a first worm wheel, a second worm wheel, a first wedge mirror, a second wedge mirror, a worm wheel spacing ring, a worm wheel pressing plate, a first worm, a second worm, a worm pressing plate and a dustproof mirror;
the first wedge mirror is fixed in the central hole of the first worm gear, and the second wedge mirror is fixed in the central hole of the second worm gear; air vents are arranged between the first wedge mirror and the first worm gear and between the second wedge mirror and the second worm gear; the first worm wheel and the second worm wheel are coaxially arranged in a mounting hole in the optical wedge mounting seat; a worm wheel space ring is arranged between the first worm wheel and the second worm wheel; a first worm wheel pressing ring and a second worm wheel pressing ring are respectively arranged on the other sides of the first worm wheel and the second worm wheel; the worm pressing plate is fixed on the optical wedge mounting seat; the first worm and the second worm are respectively meshed with the first worm wheel and the second worm wheel; worm gaskets are sleeved at the two ends of the first worm and the second worm; the dustproof mirror is fixed in a mounting hole at one end of the optical wedge mounting seat; the worm pressing plate is fixedly arranged in the mounting hole at the other end of the optical wedge mounting seat and is in close contact with the second worm gear pressing ring to provide pre-tightening force; and the outer circle of the worm pressing plate is sealed with the optical wedge mounting seat.
Compared with the prior art, the utility model, it is showing the advantage and is:
(1) the utility model discloses still adopt mated optical wedge to realize the adjustment of light path, nevertheless adopted the worm gear transmission of auto-lock at rotatory optical wedge, glue optical wedge and worm wheel as an organic whole, rotate the rotation that the worm drove the optical wedge through the follow outside, realize through the relative rotation of two wedge mirrors that the optical axis is adjustable wantonly at certain cone angle within range, because worm gear's speed reduction, realize small bulky drive ratio to the adjustment precision of optical axis has been improved by a wide margin.
(2) By adding the transmission mechanisms of the two pairs of worm gears and the worms, the motion transmission of the adjusting parts and the wedge mirror is realized, and meanwhile, the space isolation of the adjusting parts and the wedge mirror is also realized, so that the possibility of light path sealing is ensured; the sealing requirement of the non-moving part is realized through the use of the O-shaped ring, the use of polytetrafluoroethylene materials and the use of interference fit, the structure is simple and reliable, and the cost is low.
(3) The requirement of a gas channel is considered, the circumference of the wedge mirror is aligned with the inner round opening of the worm wheel during gluing, the vent hole is reserved, and the requirement that the light path can be injected into the inert gas hole is met.
Drawings
Fig. 1 is a general sectional view of an optical axis adjusting assembly.
Fig. 2 is a top partial cross-sectional view of the optical axis adjustment assembly.
Fig. 3 is a schematic view of an internal structure of the optical axis adjusting assembly.
Fig. 4 is a schematic view of a worm gear structure.
Fig. 5 is a schematic view of a wedge mirror structure.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments.
With reference to fig. 1, the utility model discloses an optical axis adjusting assembly convenient to adjust light path, including optical wedge mount pad 1, first worm wheel clamping ring 21, second worm wheel clamping ring 22, first worm wheel 31, second worm wheel 32, first wedge mirror 41, second wedge mirror 42, worm wheel spacer 5, worm wheel clamp plate 7, first worm 91, second worm 92, worm clamp plate 11, sealing screw 12, dustproof mirror 13;
the first wedge mirror 41 is fixed in the central hole of the first worm gear 31, and the second wedge mirror 42 is fixed in the central hole of the second worm gear 32; air vents are arranged between the first wedge mirror 41 and the first worm gear 31 and between the second wedge mirror 42 and the second worm gear 32; the first worm wheel 31 and the second worm wheel 32 are coaxially arranged in a mounting hole in the optical wedge mounting seat 1; a worm wheel space ring 5 is arranged between the first worm wheel 31 and the second worm wheel 32; the other sides of the first worm wheel 31 and the second worm wheel 32 are respectively provided with a first worm wheel pressing ring 21 and a second worm wheel pressing ring 22; the first worm wheel pressing ring 21 is supported on a positioning groove in the optical wedge mounting seat 1 and used for axially positioning the first worm wheel 31; the worm pressing plate 11 is fixed on the optical wedge mounting base 1; the first worm 91 and the second worm 92 are respectively meshed with the first worm wheel 31 and the second worm wheel 32; the two ends of the first worm 91 and the second worm 92 are sleeved with worm gaskets 10, and the worm pressure plate 11 is provided with a worm rotating adjusting hole; the dustproof mirror 13 is fixed in a mounting hole at one end of the optical wedge mounting seat 1; the worm pressure plate 11 is fixedly arranged in a mounting hole at the other end of the optical wedge mounting seat 1 and is tightly contacted with the second worm gear pressure ring 22 to provide pretightening force; an O-shaped ring 6 is arranged between the outer circle of the worm pressing plate 11 and the optical wedge mounting seat 1 for sealing; and an inflation hole is formed in the optical wedge mounting seat 1 and is plugged through a sealing screw 12.
In order to ensure the requirement of air tightness, the first worm wheel pressing ring 21, the second worm wheel pressing ring 22 and the worm wheel spacer ring 5 are all made of polytetrafluoroethylene materials, certain pre-tightening is given during assembly to achieve dynamic sealing, and the first worm wheel pressing ring 21, the second worm wheel pressing ring 22 and the worm wheel spacer ring 5 play roles in axial fixing, radial fixing and sealing. Due to the self-lubricity of polytetrafluoroethylene, the optical path adjustment is not too difficult to feel. Meanwhile, due to the sealing of the light path, the dust possibly existing in the adjusting mechanism can not enter the light path.
During assembly, the first wedge mirror 41 and the first worm gear 31 are glued into a whole, the second wedge mirror 42 and the second worm gear 32 are glued into a whole, in order to consider that the whole parts are mutually communicated, the first wedge mirror 41 and the second wedge mirror 42 are both circular, a platform 43 is cut on the circular shape, and vent holes 33 are formed in the wall surfaces of the central holes of the first worm gear 31 and the second worm gear 32; the platform 43 faces the vent hole 33; the outer circles of the first wedge 41 and the second wedge 42 are respectively aligned with the mounting holes of the first worm wheel 31 and the second worm wheel 32 and do not block the air vent 33. The dustproof mirror 13 and the optical wedge mounting seat 1 are fixed in a gluing mode, and air tightness is guaranteed.
The first worm wheel pressing ring 21, the second worm wheel pressing ring 22, the worm wheel spacing ring 5 and the inner hole of the optical wedge mounting seat 1 are in interference fit.
Sequentially installing a first worm wheel pressing ring 21, a glue body of a first worm wheel 31 and a first wedge mirror 41, a worm wheel spacer ring 5, a glue body of a second worm wheel 32 and a second wedge mirror 42, and a second worm wheel pressing ring 22 into the optical wedge installation seat 1; after the groove of the excircle of the worm gear pressing plate 7 is provided with the O-shaped ring 6, the whole body is pressed into the optical wedge mounting seat 1 and fixed by screws. At this time, the glue of the first worm gear 31 and the first wedge 41 and the glue of the second worm gear 32 and the second wedge 42 can only rotate around the axis of the optical wedge mounting base 1, but the resistance is large, and the rest parts cannot move. The initial positions of the glue of the first worm wheel 31 and the first wedge 41 and the glue of the second worm wheel 32 and the second wedge 42 are the upper and lower positions of the vent hole 33, and the difference is 180 degrees.
The optical path adjustment is realized by adopting paired optical wedges, but in the method of rotating the optical wedges, self-locking worm and gear transmission is adopted, the optical wedges and worm gears are glued into a whole, the worm is rotated from the outside to drive the optical wedges to rotate, light is deflected due to the wedge angle alpha of the wedge mirrors (approximately alpha/2 to K9 glass), and the optical axis can be adjusted at will within a certain cone angle range by the relative rotation of the two wedge mirrors. And the speed reduction of the worm gear transmission greatly improves the adjustment precision of the optical axis.
In addition, certain pre-tightening and the self-locking property of the transmission system ensure the stability of the optical axis of the product during impact vibration. Considering that the light path of the product needs to be injected with inert gas sometimes, the component reserves a gas injection port, and the whole light path part is communicated with each other in gas. When in use, the sealing gasket 8 and the sealing screw 12 can be retained or removed according to requirements, and the performance of the assembly is not influenced. Because only two worms in the whole assembly can rotate, other parts can not move, all parts with relative motion are matched by polytetrafluoroethylene and metal and are in interference fit, and the self-locking characteristic of motion between the worm wheel and the worm is added, the stability of the optical axis of the assembly is very high. And repeatedly measuring the change of the invisible light axis of the optical axis after the product is subjected to impact vibration. Because the worm wheel and the worm) can realize small volume and large transmission ratio, the requirements of large adjustment angle range and high adjustment precision can be simultaneously realized.
Claims (9)
1. An optical axis adjusting assembly convenient for adjusting an optical path is characterized by comprising an optical wedge mounting seat (1), a first worm gear pressing ring (21), a second worm gear pressing ring (22), a first worm gear (31), a second worm gear (32), a first wedge lens (41), a second wedge lens (42), a worm gear spacing ring (5), a worm gear pressing plate (7), a first worm (91), a second worm (92), a worm pressing plate (11) and a dustproof lens (13);
the first wedge mirror (41) is fixed in a central hole of the first worm gear (31), and the second wedge mirror (42) is fixed in a central hole of the second worm gear (32); air vents are arranged between the first wedge mirror (41) and the first worm gear (31) and between the second wedge mirror (42) and the second worm gear (32); the first worm wheel (31) and the second worm wheel (32) are coaxially arranged in a mounting hole in the optical wedge mounting seat (1); a worm wheel space ring (5) is arranged between the first worm wheel (31) and the second worm wheel (32); the other sides of the first worm wheel (31) and the second worm wheel (32) are respectively provided with a first worm wheel pressing ring (21) and a second worm wheel pressing ring (22); the worm pressing plate (11) is fixed on the optical wedge mounting seat (1); the first worm (91) and the second worm (92) are respectively meshed with the first worm wheel (31) and the second worm wheel (32); worm washers (10) are sleeved at the two ends of the first worm (91) and the second worm (92); the dustproof mirror (13) is fixed in a mounting hole at one end of the optical wedge mounting seat (1); the worm pressing plate (11) is fixedly arranged in a mounting hole at the other end of the optical wedge mounting seat (1) and is tightly contacted with the second worm gear pressing ring (22) to provide pretightening force; and the worm pressure plate (11) and the optical wedge mounting seat (1) are sealed.
2. The optical axis adjusting assembly of claim 1, wherein the optical wedge mounting base (1) is provided with an air inflation hole, and the air inflation hole is sealed and sealed by a sealing screw (12).
3. The optical axis adjustment assembly according to claim 1, wherein the first wedge (41) and the first worm gear (31), the second wedge (42) and the second worm gear (32) are fixed by gluing.
4. The optical axis adjusting assembly according to claim 1, wherein the first wedge (41) and the second wedge (42) are circular, the circular shape is cut with a platform (43), and the central hole wall surfaces of the first worm gear (31) and the second worm gear (32) are provided with vent holes (33); the platform (43) is opposite to the vent hole (33).
5. The optical axis adjusting assembly according to claim 4, wherein the installation positions of the vent holes (33) on the first worm wheel (31) and the vent holes (33) on the second worm wheel (32) are staggered by 180 °.
6. The optical axis adjusting assembly of claim 1, wherein the first worm gear pressing ring (21), the second worm gear pressing ring (22) and the worm gear spacer ring (5) are all made of polytetrafluoroethylene materials.
7. The optical axis adjustment assembly of claim 1, wherein the dust-proof mirror (13) and the optical wedge mount (1) are fixed by gluing.
8. The optical axis adjustment assembly according to claim 2, characterized in that a sealing gasket (8) is provided between the sealing screw (12) and the optical wedge mounting base (1) for sealing.
9. The optical axis adjusting assembly of claim 1, wherein the worm gear pressing plate (7) is provided with a groove on the outer circle, and an O-shaped ring (6) is arranged in the groove and used for sealing with the optical wedge mounting base (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922439335.4U CN212135033U (en) | 2019-12-30 | 2019-12-30 | Optical axis adjusting component convenient to adjust light path |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922439335.4U CN212135033U (en) | 2019-12-30 | 2019-12-30 | Optical axis adjusting component convenient to adjust light path |
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| Publication Number | Publication Date |
|---|---|
| CN212135033U true CN212135033U (en) | 2020-12-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922439335.4U Active CN212135033U (en) | 2019-12-30 | 2019-12-30 | Optical axis adjusting component convenient to adjust light path |
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| CN (1) | CN212135033U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111239950A (en) * | 2019-12-30 | 2020-06-05 | 扬州曙光光电自控有限责任公司 | Optical axis adjusting component convenient to adjust light path |
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2019
- 2019-12-30 CN CN201922439335.4U patent/CN212135033U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111239950A (en) * | 2019-12-30 | 2020-06-05 | 扬州曙光光电自控有限责任公司 | Optical axis adjusting component convenient to adjust light path |
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