CN209373240U - A kind of wide-angle telescope optical system - Google Patents
A kind of wide-angle telescope optical system Download PDFInfo
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- CN209373240U CN209373240U CN201920285438.7U CN201920285438U CN209373240U CN 209373240 U CN209373240 U CN 209373240U CN 201920285438 U CN201920285438 U CN 201920285438U CN 209373240 U CN209373240 U CN 209373240U
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- lens
- light coke
- optical system
- positive light
- negative power
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Abstract
The utility model relates to a kind of wide-angle telescope optical systems, wherein, optical system be by with positive light coke the second lens of the first lens, negative power, the third lens of negative power, half pentaprism, roof prism, negative power the 4th lens, 7th lens of the 5th lens of positive light coke, the 6th lens of positive light coke and positive light coke form, and arrange along optical axis from subject to the sequence of eyes side.First lens, the second lens and the third lens form objective lens, and different distance subject can be moved forward and backward by the third lens and realize focusing.Half pentaprism and roof prism are combined into erect image group.4th lens, the 5th lens, the 6th lens and the 7th lens form eyepiece group.This optical system field of view angle is big, can realize on 10 times of telescopic systems and be greater than 7.2 ° of field angles, effectively weaken big multiplying power bring spinning sensation.
Description
Technical field
The invention belongs to technical field of optical instrument, and in particular to a kind of wide-angle telescope optical system.
Background technique
Telescope is a kind of for observing the visual optical instrument of remote object, can be the subtended angle of remote object very little by certain
Multiplying power amplification is allowed to have biggish subtended angle in image space, and the object that with the naked eye can not be seen clearly or differentiate originally change is made clearly may be used
It distinguishes.Optical telescope in daily life is also known as " a thousand li mirror ".It mainly includes amateurish astronomical telescope, opera glass and army
Use binoculars.But current 10 times or more big power telescope in use maximum problem precisely due to observable range
Smaller, float is severe, and spinning sensation can be generated after long-time use.
Summary of the invention
The object of the present invention is to provide a kind of wide-angle telescope optical system, can be realized on 10 times of telescopic systems big
In 7.2 ° of field angles, increases range of observation, effectively weaken big multiplying power bring spinning sensation.
To reach such purpose, the technical solution provided by the present invention is: optical system is by with positive light coke
First lens, the second lens of negative power, the third lens of negative power, half pentaprism, roof prism, negative power
Four lens, the 5th lens of positive light coke, the 6th lens of positive light coke and positive light coke the 7th lens composition, along optical axis from
Subject is arranged to the sequence of eyes side.First lens, the second lens and the third lens form objective lens, and different distance is shot
Object can be moved forward and backward by the third lens and realize focusing.Half pentaprism and roof prism are combined into erect image group.4th lens,
Five lens, the 6th lens and the 7th lens form eyepiece group.
First lens and the second lens form object lens balsaming lens, and focal power is positive；4th lens and the 5th
Lens form eyepiece balsaming lens, and focal power is positive.
Compared with the prior art, the present invention has as follows a little:
1. the present invention realizes view on 10 times of telescopic systems and is greater than 7.2 ° by optimization design, reasonable distribution focal power
Field angle, relatively conventional 6.3 degree greatly improve, and increase telescopic system observable range, weaken significantly and use rear bring for a long time
Spinning sensation.
2. the present invention is all using spherical lens, structure is simple, compact, and processing is flexible.
Detailed description of the invention
Specific embodiments of the present invention are described in further detail with reference to the accompanying drawing:
Fig. 1 is optical system diagram of the present invention.
Specific embodiment
In conjunction with Fig. 1, which is successively from object space to eyes side along optical axis direction: having positive light coke
The first lens L1, negative power the second lens L2, | the third lens L3 of negative power, half pentaprism L4, roof prism
The 4th lens L6 of L5, negative power, the 5th lens L7 of positive light coke, the 6th lens L8 of positive light coke and positive light coke
7th lens L9 composition.
First lens L1, the second lens L2 and the third lens L3 form objective lens, and different distance subject can be by the
Three lens L3, which are moved forward and backward, realizes focusing, and objective lens combined focal length is 147.43mm.The first lens L1 and the second lens L2
Object lens balsaming lens is formed, focal power is positive.Object lens balsaming lens can effectively eliminate objective lens color difference, and the third lens L3 can be effective
Correct the aberrations such as big visual field bring oblique spherical aberration, the curvature of field and coma.
Half pentaprism L4 and roof prism L5 are combined into erect image group, and the inverted image that objective lens are obtained is anyway.
4th lens L6, the 5th lens L7, the 6th lens L8 and the 7th lens L9 form eyepiece group, and emergent pupil is located at the 7th thoroughly
On the right side of mirror L9 at 13mm.Eyepiece group combined focal length is 14mm.The 4th lens L6 and the 5th lens L7 composition eyepiece is glued thoroughly
Mirror, focal power are positive.Eyepiece group is distributed by reasonable focal power and glass combination, under the premise of realizing big field angle, balance
Objective lens and the remaining color difference of prism group effectively reduce the technological difficulties such as visual distortion, curvature of field.
Fig. 1 is optical system diagram of the present invention.
Wide-angle telescope optical system magnification of the present invention is 10.5 times, and 7.2 ° of field angle of object, eyepiece optics distort
Greater than -8%.Field angle is much larger than the field angle of conventional 10 times of telescopes, and decrease flating significantly can effectively promote telescope
User's usage experience.
As described above be in conjunction with particular content provide preferred embodiment, and do not have to limitation the present invention, it is all with it is of the invention
Approximations such as method, structure, identical, or for making any modifications, equivalent replacements, and improvements etc. under the premise of present inventive concept,
It all should be considered as protection scope of the present invention.
Claims (3)
1. a kind of wide-angle telescope optical system, wherein optical system is by the first lens with positive light coke, negative power
The second lens, the third lens of negative power, half pentaprism, roof prism, negative power the 4th lens, positive light coke
7th lens of the 5th lens, the 6th lens of positive light coke and positive light coke form, along optical axis from subject to eyes side
Sequence arrangement: the first lens, the second lens and the third lens form objective lens, and different distance subject can be saturating by third
Mirror, which is moved forward and backward, realizes focusing: half pentaprism and roof prism are combined into erect image group: the 4th lens, the 5th lens, the 6th lens
Eyepiece group is formed with the 7th lens.
2. a kind of wide-angle telescope optical system as described in claim 1, it is characterised in that: first lens and second are thoroughly
Microscope group is positive at object lens balsaming lens, focal power.
3. a kind of wide-angle telescope optical system as described in claim 1, it is characterised in that: the 4th lens and the 5th are thoroughly
Microscope group is positive at eyepiece balsaming lens, focal power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920285438.7U CN209373240U (en) | 2019-03-07 | 2019-03-07 | A kind of wide-angle telescope optical system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920285438.7U CN209373240U (en) | 2019-03-07 | 2019-03-07 | A kind of wide-angle telescope optical system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209373240U true CN209373240U (en) | 2019-09-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920285438.7U Active CN209373240U (en) | 2019-03-07 | 2019-03-07 | A kind of wide-angle telescope optical system |
Country Status (1)
| Country | Link |
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| CN (1) | CN209373240U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114167598A (en) * | 2021-12-06 | 2022-03-11 | 福建师范大学 | Prism type magnifying lens and medical operation magnifier |
| CN115166962A (en) * | 2022-07-05 | 2022-10-11 | 福建优恩立光电科技有限公司 | Transmission-type monocular telescope for visual observation |
| CN116893503A (en) * | 2023-09-11 | 2023-10-17 | 昆明明汇光学有限公司 | Optical system of target observation mirror |
-
2019
- 2019-03-07 CN CN201920285438.7U patent/CN209373240U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114167598A (en) * | 2021-12-06 | 2022-03-11 | 福建师范大学 | Prism type magnifying lens and medical operation magnifier |
| CN115166962A (en) * | 2022-07-05 | 2022-10-11 | 福建优恩立光电科技有限公司 | Transmission-type monocular telescope for visual observation |
| CN115166962B (en) * | 2022-07-05 | 2023-09-05 | 福建优恩立光电科技有限公司 | Transmission type monocular telescope for visual observation |
| CN116893503A (en) * | 2023-09-11 | 2023-10-17 | 昆明明汇光学有限公司 | Optical system of target observation mirror |
| CN116893503B (en) * | 2023-09-11 | 2023-11-24 | 昆明明汇光学有限公司 | Optical system of target observation mirror |
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