CN201054038Y - Microscopic objective adjustable focus device - Google Patents
Microscopic objective adjustable focus device Download PDFInfo
- Publication number
- CN201054038Y CN201054038Y CNU200720080165XU CN200720080165U CN201054038Y CN 201054038 Y CN201054038 Y CN 201054038Y CN U200720080165X U CNU200720080165X U CN U200720080165XU CN 200720080165 U CN200720080165 U CN 200720080165U CN 201054038 Y CN201054038 Y CN 201054038Y
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- CN
- China
- Prior art keywords
- parfocalization
- seat
- ring
- adjusting
- microcobjective
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model provides a novel parfocal length adjustable device for a microscopic objective. A parfocalization-adjusting ring used for adjusting the focal length is additionally arranged in the front of the inner seat, and the front sleeve thread of the outer seat is expanded in the direction of the handling ring, which leaves adequate adjusting space for the parfocalization adjustment. A special parfocalization-adjusting thread is arranged on the outer seat and is used in coordination with the parfocalization-adjusting ring. An O-shaped rubber sealing ring is arranged between the parfocalization-adjusting ring and the front sleeve. A linear limit groove is arranged on the inner seat, and the limit groove matches with the limit bolt fixed on the outer seat. The utility model solves the problem of an axial rotation caused by an axisymmetrical part for lack of a limit device, realizes the adjustment of a parfocal length, increases the resilience force generated by the spring and guarantees the imaging quality.
Description
Technical field:
The utility model relates to optical instrument, and the adjustable parfocalization of especially a kind of new microcobjective is apart from device.
Background technology:
In optical microscope, except that stereomicroscope did not have the parfocalization requirement, other microscopes such as biological microscope, metaloscope etc. all had the parfocalization requirement, and the quality of parfocalization performance is an important symbol of microscope quality.And the quality of parfocalization performance guarantees by object lens parfocalization distance.For the microcobjective of same multiplying power, process the parfocalization distance with the parfocalization lathe, and just have bigger error for the microcobjective of different multiplying.Implement the microcobjective parfocalization to different enlargement ratios on the microscope, classic method is a large amount of apolegamys, but to the mode of production of many kinds, short run, just is difficult to accomplish this point.And long reach flat field microcobjective eyeglass is big, and existing adjustable parfocalization also is not suitable for this parfocalization mode apart from the microcobjective structure.Still there are many problems in the microscope spring objective lens arrangement of the most of adjustable parfocalization distance of using at present, mainly contain 2 points: 1, interior seat and objective lens only apply elastic force by parfocalization towards the object plane direction by spring, then do not have elastic force on the reverse direction, thereby cause the resilience dynamics not enough, influence image quality; 2, owing to all parts in the structure are revolving parts, lack stop means, so there is the axial rotation problem.In addition, because long reach flat field microcobjective eyeglass is bigger, parfocalization mode originally can not satisfy the parfocalization requirement of long reach flat field microcobjective, solves these problems so will seek a kind of new adjustable parfocalization structure.
Summary of the invention:
The purpose of this utility model is in order to overcome the deficiency of original microcobjective parfocalization mode, to provide the adjustable parfocalization of a kind of new microcobjective apart from device.
The utility model comprises objective lens, protheca, interior seat, outer seat, handling ring, stop screw, pressure cylinder, spring, trim ring and eliminate stray light door screen, unlike the prior art be: the front at interior seat has added the parfocalization regulating ring, and the preceding external threading of seat is expanded to the direction of handling ring outward, reserves enough adjusting spaces for the parfocalization regulating ring; Offer special parfocalization outside on the seat and regulate screw thread, with the supporting use of parfocalization regulating ring, to regulate parfocal distance; O type rubber seal is set between protheca and parfocalization regulating ring, when being compressed by protheca and parfocalization regulating ring, O type rubber seal can increase the resilience dynamics, be used with spring, regulate parfocalization apart from the time can make in the seat both sides simultaneously stressed, solving existing spring object lens influences the problem of image quality because of unilaterally applying elastic force; On interior seat, open a microscler stopper slot, cooperate with the stop screw that is fixed on outer.
The utility model is compared with the microscope spring objective lens arrangement of existing adjustable parfocal distance, and the one, set up parfocalization regulating ring and O type rubber seal, realize the adjusting of parfocal distance and increased the screen resilience that spring produces; The 2nd, solved the axial rotation problem that parts such as interior seat and inner mirror group thereof, pressure cylinder cause because of lacking stop means; The 3rd, when the conversion object lens, needn't focus again, or only need slight focusing, can obtain micro-image clearly.
Description of drawings:
Fig. 1 is a structure assembling synoptic diagram of the present utility model.
Among the figure: 1. seat 7. outer seat 8. handling rings 9. stop screws 10. pressure cylinders 11. springs 12. trim rings 13. eliminate stray light door screens in the image planes 2. objective lens 3. protheca 4.O type rubber seal 5. parfocalization regulating rings 6.
Embodiment:
The utility model is made up of objective lens 2, protheca 3, O type rubber seal 4, parfocalization regulating ring 5, the interior seat 6 that has microscler stopper slot and parfocalization adjusting screw thread, the outer seat 7 that has screw hole, handling ring 8, stop screw 9, pressure cylinder 10, spring 11, trim ring 12 and eliminate stray light door screen 13.Seat was 6 li in wherein objective lens 2 and pressure cylinder 10 were contained in, and the concrete quantity of objective lens and form are by enlargement ratio and image quality decision.Because of light path is longer, last group objective holder stretches out from interior seat 6, and this set of contact lenses must be fixing with trim ring 12.Adopt clearance fit between interior seat 6 and the outer seat 7, make interior 6 and slide swimmingly vertically in the seat 7 outside.
On interior seat 6, open a microscler stopper slot, cooperate the axial rotation problem that seat 6 and inner parts thereof cause because of lacking stop means in can solving with the stop screw 9 that is fixed on outer 7.
Front at interior seat 6 has added parfocalization regulating ring 5, and the preceding external threading of seat 7 is expanded to the direction of handling ring 8 outward, reserves enough adjusting spaces for parfocalization regulating ring 5; Offer special parfocalization outside on the seat 7 and regulate screw thread, with the 5 supporting uses of parfocalization regulating ring, to regulate parfocal distance.
Between protheca 3 and parfocalization regulating ring 5, add O type rubber seal 4, when being compressed by protheca 3 and parfocalization regulating ring 5, O type rubber seal 4 can increase screen resilience, be used with spring 11, regulate parfocalization apart from the time can make in the seat both sides simultaneously stressed, solving original spring object lens influences the problem of image quality because of unilaterally applying elastic force.
During adjusting, take off protheca 3 as decoration function, O type rubber seal 4 and, expose parfocalization regulating ring 5 in order to increase the handling ring 8 of friction force.According to the parfocalization requirement, regulate repeatedly parfocalization regulating ring 5 outside seat 7 parfocalization regulate position on the screw thread, till reaching the parfocalization requirement.Load onto O type rubber seal 4 then, put handling ring 8, tighten protheca 3 at last.Because handling ring 8 calculates the position of seat on 7 outside in advance, so as long as tighten protheca 3, make its end face compress handling ring 8, can guarantee that O type rubber seal 4 is in compressive state, the generation screen resilience reaches designing requirement.
Claims (3)
1. the adjustable parfocalization of microcobjective is apart from device, comprise objective lens (2), protheca (3), have microscler stopper slot and screw thread interior seat (6), have outer seat (7), handling ring (8), stop screw (9), pressure cylinder (10), spring (11), trim ring (12) and the eliminate stray light door screen (13) of screw hole, it is characterized in that: the parfocalization regulating ring (5) of focusing has been set up in the front of interior (6); The preceding external threading of seat (7) is offered special parfocalization outside and regulated screw thread to the expansion of handling ring (8) direction on the seat (7) outward, and is supporting with parfocalization regulating ring (5).
2. the adjustable parfocalization of microcobjective according to claim 1 is characterized in that between parfocalization regulating ring (5) and protheca (3) O type rubber seal (4) being housed apart from device, cooperates with spring (11).
3. the adjustable parfocalization of microcobjective according to claim 1 is characterized in that apart from device: it opens a microscler stopper slot on the interior seat (6) of spring microcobjective structure, cooperates with stop screw (9) on being fixed on outer seat (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720080165XU CN201054038Y (en) | 2007-06-26 | 2007-06-26 | Microscopic objective adjustable focus device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720080165XU CN201054038Y (en) | 2007-06-26 | 2007-06-26 | Microscopic objective adjustable focus device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201054038Y true CN201054038Y (en) | 2008-04-30 |
Family
ID=39393700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720080165XU Expired - Fee Related CN201054038Y (en) | 2007-06-26 | 2007-06-26 | Microscopic objective adjustable focus device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201054038Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103076677A (en) * | 2013-02-01 | 2013-05-01 | 桂林电子科技大学 | Double-telecentric Kohler illumination light path |
| CN107144553A (en) * | 2017-05-27 | 2017-09-08 | 贵州电网有限责任公司电力科学研究院 | A kind of Ultraluminescence detects SF6SO in electrical equipment2The device and method of content |
| CN113064264A (en) * | 2019-12-31 | 2021-07-02 | 长春长光华大智造测序设备有限公司 | Image quality compensation method and device for microscopic optical system |
-
2007
- 2007-06-26 CN CNU200720080165XU patent/CN201054038Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103076677A (en) * | 2013-02-01 | 2013-05-01 | 桂林电子科技大学 | Double-telecentric Kohler illumination light path |
| CN107144553A (en) * | 2017-05-27 | 2017-09-08 | 贵州电网有限责任公司电力科学研究院 | A kind of Ultraluminescence detects SF6SO in electrical equipment2The device and method of content |
| CN113064264A (en) * | 2019-12-31 | 2021-07-02 | 长春长光华大智造测序设备有限公司 | Image quality compensation method and device for microscopic optical system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080430 |