CN209542934U - A kind of flat field mirror of adjustable back work distance - Google Patents
A kind of flat field mirror of adjustable back work distance Download PDFInfo
- Publication number
- CN209542934U CN209542934U CN201920527598.8U CN201920527598U CN209542934U CN 209542934 U CN209542934 U CN 209542934U CN 201920527598 U CN201920527598 U CN 201920527598U CN 209542934 U CN209542934 U CN 209542934U
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- ring
- frame
- flat field
- adjusting ring
- field mirror
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Abstract
The utility model provides a kind of flat field mirror of adjustable back work distance, including frame, clamp ring, adjusting ring, it is characterized by: frame outside surface thereof is provided with the adjusting ring being threadedly engaged, clamp ring is provided on the left of adjusting ring, clamp ring and frame are by being threadedly engaged realization locking function, the positive Middle face of frame is provided with scale, after adjusting ring is rotated to suitable position, rotation clamp ring is exchanged pitch circle and is locked, realize the adjustment of flat field mirror back work distance, error can be eliminated, reach more preferably imaging effect, some CCD users can be saved with the cost for buying special adapter ring, it is easy to use.
Description
Technical field
The utility model relates to optical instrumentation field, a kind of specific flat field mirror of adjustable back work distance.
Background technique
Astronomical telescope object lens are mostly spherical mirror, to overcome the curvature of field flat field mirror that needs to arrange in pairs or groups to carry out using flat field mirror is usual
Switching ring length is calculated using theoretical algorithm, but due to, there are accumulated error, causing to put down in part processing and assembling process
There is some difference with theoretical value for field lens rear cut-off distance, tends not to reach optimal imaging using the switching ring length that theoretical value calculates
Position.
Summary of the invention
The purpose of this utility model is to provide a kind of flat field mirrors of adjustable back work distance, pass through clamp ring and adjusting ring
Be threadedly engaged, adjust flat field mirror back work distance with meet use needs.
In order to achieve the above purposes, the technical solution adopted by the utility model is:
A kind of flat field mirror of adjustable back work distance, including frame, clamp ring, adjusting ring, it is characterised in that: frame right part
Outer surface is provided with the adjusting ring being threadedly engaged, and clamp ring is provided on the left of adjusting ring, clamp ring is with frame by being threadedly engaged
Realize that locking function, the positive Middle face of frame are provided with scale.
The beneficial effects of the utility model embody a concentrated reflection of, after adjusting ring is rotated to suitable position, rotation locking
Circle locks adjusting ring, realizes the adjustment of flat field mirror back work distance, can eliminate error, reach more preferably imaging effect,
Some CCD users can be saved with the cost for buying special adapter ring, it is easy to use.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the frame structure schematic diagram of the utility model.
Specific embodiment
The utility model is further described with reference to the accompanying drawing.
A kind of flat field mirror of adjustable back work distance, including frame 1, clamp ring 2, adjusting ring 3, it is characterised in that: frame 1
Outside surface thereof is provided with the adjusting ring 3 being threadedly engaged, and clamp ring 2 is provided on the left of adjusting ring 3, and clamp ring 2 passes through with frame 1
It is threadedly engaged realization locking function, the positive Middle face of frame 1 is provided with scale 4, after adjusting ring 3 is rotated to suitable position,
Adjusting ring 3 is locked in rotation clamp ring 2, is realized the adjustment of flat field mirror back work distance, can be eliminated error, reach more preferably
Imaging effect can save some CCD users the cost for buying special adapter ring, easy to use, realize work after flat field mirror
Make away from adjustment, and the scale designed on frame 1 be able to achieve adjustment distance readability.
Claims (1)
1. a kind of flat field mirror of adjustable back work distance, including frame (1), clamp ring (2), adjusting ring (3), it is characterised in that:
Frame (1) outside surface thereof is provided with the adjusting ring (3) being threadedly engaged, and is provided with clamp ring (2) on the left of adjusting ring (3), locks
Circle (2) is provided with scale (4) by being threadedly engaged realization locking function, the positive Middle face of frame (1) with frame (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920527598.8U CN209542934U (en) | 2019-04-18 | 2019-04-18 | A kind of flat field mirror of adjustable back work distance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920527598.8U CN209542934U (en) | 2019-04-18 | 2019-04-18 | A kind of flat field mirror of adjustable back work distance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209542934U true CN209542934U (en) | 2019-10-25 |
Family
ID=68246187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920527598.8U Active CN209542934U (en) | 2019-04-18 | 2019-04-18 | A kind of flat field mirror of adjustable back work distance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209542934U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112099222A (en) * | 2020-09-21 | 2020-12-18 | 淮安市岽盛光电仪器有限公司 | Flat field lens assembly focusing device for telescope |
-
2019
- 2019-04-18 CN CN201920527598.8U patent/CN209542934U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112099222A (en) * | 2020-09-21 | 2020-12-18 | 淮安市岽盛光电仪器有限公司 | Flat field lens assembly focusing device for telescope |
| CN112099222B (en) * | 2020-09-21 | 2022-12-06 | 淮安艾利光电仪器有限公司 | Flat field lens assembly focusing device for telescope |
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