CN207586536U - A kind of focal length telescopic optical system - Google Patents
A kind of focal length telescopic optical system Download PDFInfo
- Publication number
- CN207586536U CN207586536U CN201721649024.5U CN201721649024U CN207586536U CN 207586536 U CN207586536 U CN 207586536U CN 201721649024 U CN201721649024 U CN 201721649024U CN 207586536 U CN207586536 U CN 207586536U
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- China
- Prior art keywords
- lens
- eyepiece
- balsaming
- convex surface
- focusing
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Abstract
The utility model provides a kind of focal length telescopic optical system, it is characterised in that：The first balsaming lens of object lens has been set gradually from left to right along optical axis, focusing lens, half pentaprism, roof prism, the first balsaming lens of eyepiece, the second lens of eyepiece, eyepiece third lens, it is convex surface on the left of the first balsaming lens of object lens, it is plane on the right side of the first balsaming lens of object lens, it is convex surface on the left of focusing lens, it is concave surface on the right side of focusing lens, it is concave surface on the left of the first balsaming lens of eyepiece, it is convex surface on the right side of the first balsaming lens of eyepiece, it is convex surface on the left of the second lens of eyepiece, it is horizontal plane on the right side of the second lens of eyepiece, it is convex surface on the left of eyepiece third lens, it is horizontal plane on the right side of eyepiece third lens, the system reasonable design specification, it is easy to use, by simplifying objective lens arrangement, a piece of cemented objective is used to meet the design requirement of focal length, and eyepiece uses a balsaming lens with two panels eyepiece lens with reduced eye lens structure.
Description
Technical field
The utility model is related to physics class, optical element or optical system, espespecially a kind of focal length telescopic optical system.
Background technology
Telescope is a kind of optical instrument that remote object is observed using lens or speculum and other optical devices, sharp
It is reflected by the concave mirror with the light refraction by lens or light and feeds them into aperture and assemble imaging, using a magnification eyepiece
And be seen, first effect of telescope is to amplify the subtended angle of distant objects, and human eye is enable to see the smaller details of angular distance clearly, is hoped
Remote second effect of mirror is the ratio pupil diameter that object lens are collected into（It is 8 millimeters maximum）Coarser light beam is sent into human eye, makes sight
Survey person can see the dark weak object that can't see originally.
With the development of telescope technology, how to simplify mirror structure to meet design requirement, be always industry development
Key technology.
Utility model content
For above-mentioned technical problem, the utility model provides a kind of focal length telescopic optical system, and system design is closed
Specification is managed, it is easy to use, by simplifying objective lens arrangement, a piece of cemented objective is used to meet the design requirement of focal length, and mesh
Mirror uses a balsaming lens with two panels eyepiece lens with reduced eye lens structure.
In order to solve the above technical problems, the utility model provides a kind of focal length telescopic optical system, including object lens
One balsaming lens, focusing lens, half pentaprism, roof prism, the first balsaming lens of eyepiece, the second lens of eyepiece, eyepiece third are saturating
Mirror, it is characterised in that：The first balsaming lens of object lens, focusing lens, half pentaprism, ridge rib have been set gradually from left to right along optical axis
Mirror, the first balsaming lens of eyepiece, the second lens of eyepiece, eyepiece third lens are convex surface on the left of the first balsaming lens of object lens, object lens
It is plane on the right side of first balsaming lens, is convex surface on the left of focusing lens, is concave surface, half pentaprism lower surface and ridge on the right side of focusing lens
Prism upper surface is mutually parallel and distance therebetween is 0.8 millimeter, is concave surface on the left of the first balsaming lens of eyepiece, eyepiece the
It is convex surface on the right side of one balsaming lens, is convex surface on the left of the second lens of eyepiece, is horizontal plane on the right side of the second lens of eyepiece, eyepiece third
It is convex surface on the left of lens, is horizontal plane on the right side of eyepiece third lens, between the second lens of the first balsaming lens of eyepiece and eyepiece most
It it is closely 0.2 millimeter, minimum distance is 0.2 millimeter between the second lens of eyepiece and eyepiece third lens.
The utility model has the advantages that compared with prior art：
1st, the utility model rational Optical System Design in, using a piece of balsaming lens as object lens, light transmittance
Greatly, focusing lens move forward 11.02 millimeters, corresponding nearest 2 meters of sighting distance.
2nd, for the emergent pupil of entire optical system away from being 16.59 millimeters, clear eye distance is 17.6 millimeters, and exit pupil diameter is 52 millis
Rice.
Description of the drawings
Fig. 1 is a kind of focal length telescopic optical system structure diagram；
The first balsaming lens of 1- object lens in figure；2- focusing lens；Half pentaprisms of 3-；4- roof prisms；5- eyepieces first are glued
Lens；The second lens of 6- eyepieces；7- eyepiece third lens.
Specific embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
It clearly and completely describes, it is clear that the described embodiments are only a part of the embodiments of the utility model rather than all real
Apply example.Based on the embodiment in the utility model, those of ordinary skill in the art without making creative work, institute
The every other embodiment obtained, belongs to scope of protection of the utility model.
Embodiment 1
A kind of focal length telescopic optical system as shown in Figure 1, including the first balsaming lens of object lens 1, focusing lens 2, half five ribs
Mirror 3, roof prism 4, the first balsaming lens of eyepiece 5, the second lens of eyepiece 6, eyepiece third lens 7, it is characterised in that：Along optical axis
It has been set gradually from left to right the first balsaming lens of object lens 1, focusing lens 2, half pentaprism 3, roof prism 4, the first gluing of eyepiece
Lens 5, the second lens of eyepiece 6, eyepiece third lens 7,1 left side of the first balsaming lens of object lens is convex surface, and object lens first are glued thoroughly
1 right side of mirror is plane, and 2 left side of focusing lens is convex surface, and 2 right side of focusing lens is concave surface, half pentaprism, 3 lower surface and roof prism 4
Upper surface is mutually parallel and distance therebetween is 0.8 millimeter, is concave surface, eyepiece first on the left of the first balsaming lens of eyepiece 5
The right side of balsaming lens 5 is convex surface, and 6 left side of the second lens of eyepiece is convex surface, and 6 right side of the second lens of eyepiece is horizontal plane, eyepiece the
Three lens, 7 left side is convex surface, and 7 right side of eyepiece third lens is horizontal plane, the first balsaming lens of eyepiece 5 and the second lens of eyepiece 6
Between minimum distance be 0.2 millimeter, between the second lens of eyepiece 6 and eyepiece third lens 7 minimum distance be 0.2 millimeter, this reality
With novel Optical System Design rational in, using a piece of balsaming lens as object lens, light transmittance is big, focusing lens Forward
11.02 millimeters, corresponding nearest 2 meters of sighting distance, for the emergent pupil of entire optical system away from being 16.59 millimeters, clear eye distance is 17.6 millimeters,
Exit pupil diameter is 52 millimeters.
Claims (1)
1. a kind of focal length telescopic optical system, including the first balsaming lens of object lens（1）, focusing lens（2）, half pentaprism（3）, room
Ridge prism（4）, the first balsaming lens of eyepiece（5）, the second lens of eyepiece（6）, eyepiece third lens（7）, it is characterised in that：Along light
Axis has been set gradually from left to right the first balsaming lens of object lens（1）, focusing lens（2）, half pentaprism（3）, roof prism（4）, mesh
The first balsaming lens of mirror（5）, the second lens of eyepiece（6）, eyepiece third lens（7）, the first balsaming lens of object lens（1）Left side is convex
Face, the first balsaming lens of object lens（1）Right side is plane, focusing lens（2）Left side is convex surface, focusing lens（2）Right side is concave surface, half five
Prism（3）Lower surface and roof prism（4）Upper surface is mutually parallel and distance therebetween is 0.8 millimeter, the first glue of eyepiece
Close lens（5）Left side is concave surface, the first balsaming lens of eyepiece（5）Right side is convex surface, the second lens of eyepiece（6）Left side is convex surface,
The second lens of eyepiece（6）Right side is horizontal plane, eyepiece third lens（7）Left side is convex surface, eyepiece third lens（7）Right side is water
Plane, the first balsaming lens of eyepiece（5）With the second lens of eyepiece（6）Between minimum distance be 0.2 millimeter, the second lens of eyepiece
（6）With eyepiece third lens（7）Between minimum distance be 0.2 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721649024.5U CN207586536U (en) | 2017-12-01 | 2017-12-01 | A kind of focal length telescopic optical system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721649024.5U CN207586536U (en) | 2017-12-01 | 2017-12-01 | A kind of focal length telescopic optical system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207586536U true CN207586536U (en) | 2018-07-06 |
Family
ID=62734825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721649024.5U Expired - Fee Related CN207586536U (en) | 2017-12-01 | 2017-12-01 | A kind of focal length telescopic optical system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207586536U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117075324A (en) * | 2023-10-13 | 2023-11-17 | 昆明明汇光学有限公司 | Telescope optical system |
-
2017
- 2017-12-01 CN CN201721649024.5U patent/CN207586536U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117075324A (en) * | 2023-10-13 | 2023-11-17 | 昆明明汇光学有限公司 | Telescope optical system |
| CN117075324B (en) * | 2023-10-13 | 2023-12-15 | 昆明明汇光学有限公司 | Telescope optical system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180706 Termination date: 20201201 |