CN102411193B - Continuous zooming CCD (Charge Coupled Device) television tracking lens optical system - Google Patents
Continuous zooming CCD (Charge Coupled Device) television tracking lens optical system Download PDFInfo
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- CN102411193B CN102411193B CN201110372764.XA CN201110372764A CN102411193B CN 102411193 B CN102411193 B CN 102411193B CN 201110372764 A CN201110372764 A CN 201110372764A CN 102411193 B CN102411193 B CN 102411193B
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Abstract
The invention discloses a continuous zooming CCD (Charge Coupled Device) television tracking lens optical system, which consists of a front fixing group, a zooming group, a compensating group, a back fixing group and a CCD target surface, wherein the front fixing group consists of a glued lens formed by gluing a positive lens and a negative lens; the zooming group consists of a double concave glued lens formed by gluing a positive lens and a negative lens; the compensating group consists of a double separation positive-negative lens combination; and the back fixing group consists of a convex-concave glued lens formed by gluing a positive lens and a negative lens. Compared with the prior art, the optical system has the advantages of four-group eight-sheet structure, simple structure, reasonable design, high-definition image quality, small full-field distortion, focal distance 51-295 millimeters, F factor 1/3.5 and capability of meeting the requirements of equipment.
Description
Technical field
The invention belongs to optical design technical field, is specifically related to a kind of TV and follows the tracks of CCD lens optical system.
Background technology
Along with the widespread use of TV monitoring and controlling and tracking technique, zoom lens is with its distinctive advantage of amplifying and following the tracks of to target detection, continuously, applies more and more extensively, is particularly applied to current land and sea border defense supervisory system.Except requiring to have from short focal length, to long-focus continuous zoom process, have high-resolution map image quality, the less amount of distortion in visual field (≤1.0%) of also will demanding perfection, normal work within the scope of adaptive temperature-40 ℃～50 ℃, in order to reduce the loss of luminous energy, the glass sheet number that requires this zoom lens to use is more few better simultaneously.
Innovation and creation content
The object of the invention is to provide a kind of continuous vari-focus CCD TV tracking lens optical system.Have high-resolution map image quality, full visual field amount of distortion is little, meets equipment environmental requirement.
Realizing the technical scheme that object of the present invention takes is: this continuous vari-focus CCD TV tracking lens optical system, sequentially by front fixedly group, zoom group, compensation group, rear fixedly group and CCD target surface, formed, it is characterized in that: described front fixedly group sequentially consists of the balsaming lens of a positive lens and a negative lens gummed; The concave-concave balsaming lens that described zoom group is sequentially glued together by positive and negative lens forms; Described compensation group is sequentially formed by two separated positive and negative lens combinations, and rear fixedly group sequentially consists of the convex-concave balsaming lens of a positive and negative lens gummed;
The focal length of the light path that described front fixedly group, zoom group, compensation group, rear fixedly group form is 51mm～295mm, and F number is 1/3.5.
Described zoom group and compensation group are changed and are realized continuous vari-focus by control interval.
Adopt the beneficial effect of technique scheme: this continuous vari-focus CCD TV tracking lens optical system, utilize the balsaming lens of a positive lens and a negative lens gummed as front fixedly group, for the target to different distance, focus on; With the concave-concave balsaming lens of a positive and negative lens gummed, realize continuous zoom; With two separated positive and negative lens combinations, realize continuous zoom compensation; Rear fixing group adopts the convex-concave balsaming lens of a positive and negative lens gummed, and the residual aberration of first three groups system is offset to balance, realizes the object of high-resolution imaging, is finally imaged on the CCD target surface of 1/3 inch.Zoom group and compensation group are changed and are realized continuous vari-focus by control interval.Compared with prior art, the present invention is four group of eight slice structure, simple in structure, reasonable in design, has high-resolution map image quality, and full visual field amount of distortion is little, and focal length is 51mm～295mm, and F number is 1/3.5, meets the demand of equipment.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, specific embodiments of the invention are described in further detail.
Fig. 1 is the structural representation of short burnt state.
Fig. 2 is the structural representation of middle burnt state.
Fig. 3 is the structural representation of long burnt state.
Fig. 4 is in short burnt situation, and MTF during meeting spatial frequency 40lp/mm passes letter figure.
Fig. 5 is in middle burnt situation, and MTF during meeting spatial frequency 40lp/mm passes letter figure.
Fig. 6 is in long burnt situation, and MTF during meeting spatial frequency 40lp/mm passes letter figure.
Fig. 7 figure that distorts.
Embodiment
51mm～295mm/F3.5 continuous vari-focus CCD TV tracking lens optical system as shown in Figure 1, 2, 3, four group of eight slice structure, comprise that balsaming lens 1 by a positive lens and negative lens gummed is as front fixedly group, for the target of different distance is focused on, zoom group consists of the concave-concave balsaming lens 2 of a positive and negative lens gummed, realizes continuous zoom; Compensation group is combined by two separated positive negative lenses 3,4, realizes continuous zoom compensation; The convex-concave balsaming lens 5 that rear fixedly group is glued together by positive and negative lens forms, and realizes the aberration balancing of system, is finally imaged on the CCD target surface 6 of 1/3 inch.Zoom group and compensation group realize continuous vari-focus by diagram interval variation.This system is in short Jiao, middle Jiao and long burnt situation as shown in FIG. 4,5,6, 7, and MTF during meeting spatial frequency 40lp/mm passes letter value can find out to have high-resolution map image quality, and full visual field amount of distortion is little, meets equipment environmental requirement.
Claims (2)
1. a continuous vari-focus CCD TV tracking lens optical system, sequentially by front fixedly group, zoom group, compensation group, rear fixedly group and CCD target surface, formed, it is characterized in that: described front fixedly group sequentially consists of the balsaming lens of a positive lens and a negative lens gummed; The concave-concave balsaming lens that described zoom group is sequentially glued together by positive and negative lens forms; Described compensation group is sequentially formed by two separated positive and negative lens combinations, and rear fixedly group sequentially consists of the convex-concave balsaming lens of a positive and negative lens gummed; The focal length of the light path that described front fixedly group, zoom group, compensation group, rear fixedly group form is 51mm～295mm, and F number is 1/3.5.
2. a kind of continuous vari-focus CCD TV tracking lens optical system according to claim 1, is characterized in that: described zoom group and compensation group are changed and realized continuous vari-focus by control interval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110372764.XA CN102411193B (en) | 2011-11-22 | 2011-11-22 | Continuous zooming CCD (Charge Coupled Device) television tracking lens optical system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110372764.XA CN102411193B (en) | 2011-11-22 | 2011-11-22 | Continuous zooming CCD (Charge Coupled Device) television tracking lens optical system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102411193A CN102411193A (en) | 2012-04-11 |
| CN102411193B true CN102411193B (en) | 2014-09-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110372764.XA Active CN102411193B (en) | 2011-11-22 | 2011-11-22 | Continuous zooming CCD (Charge Coupled Device) television tracking lens optical system |
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| CN (1) | CN102411193B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102890335A (en) * | 2012-09-17 | 2013-01-23 | 河南中光学集团有限公司 | Double-field-of-view star position calibration digital lens optical system |
| CN115373206B (en) * | 2021-05-21 | 2024-05-24 | 中强光电股份有限公司 | Illumination system and projection device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61110112A (en) * | 1984-11-02 | 1986-05-28 | Matsushita Electric Ind Co Ltd | Zoom lens of high variable power |
| JPH0363614A (en) * | 1989-07-31 | 1991-03-19 | Minolta Camera Co Ltd | Zoom lens |
| CN202443166U (en) * | 2011-11-22 | 2012-09-19 | 河南中光学集团有限公司 | Continuous zoom CCD television tracking lens optical system |
-
2011
- 2011-11-22 CN CN201110372764.XA patent/CN102411193B/en active Active
Non-Patent Citations (2)
| Title |
|---|
| JP特开平3-63614A 1991.03.19 |
| JP特开昭61-110112A 1986.05.28 |
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| CN102411193A (en) | 2012-04-11 |
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