CN102944924B - Short-focus high-definition projection lens structure - Google Patents
Short-focus high-definition projection lens structure Download PDFInfo
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- CN102944924B CN102944924B CN201210502203.1A CN201210502203A CN102944924B CN 102944924 B CN102944924 B CN 102944924B CN 201210502203 A CN201210502203 A CN 201210502203A CN 102944924 B CN102944924 B CN 102944924B
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Abstract
The invention discloses a short-focus high-definition projection lens structure which is characterized by comprising thirteen lenses which are arranged in sequence and are divided into front and rear two groups, wherein for the front group, a first meniscus-shaped lens, a second meniscus-shaped lens, a third single concave lens, a fourth biconcave spherical lens, a fifth biconvex lens, and sixth and seventh bonding lenses; and for the rear group, a first biconvex lens, a second meniscus-shaped lens, third and fourth bonding lenses, a fifth planoconvex lens, and a sixth biconvex lens. The short-focus high-definition projection lens structure is formed by combining spherical lenses, is low in machining cost and is applicable to batch production, the glass grinding machining is convenient, aluminum-made structure pieces are adopted in the structure, and the focusing mode refers to that the lenses in the front group are adjusted, so that the problem of movement difficulty caused by the large whole lens weight in whole group focusing (both the front and rear groups) is avoided.
Description
Technical field
The present invention relates to a kind of pre-projecting type projector projection objective.
Background technology
By image display device classification, the image display technology aspect of current pre-projecting type projector, is mainly divided into the large technical field of 3LCD, DLP, LCOS tri-.3LCD projector lens generally adopts telecentric optics to design, and is divided into two kinds of modes to realize: the first adopts the various spherical lenses of about ten to combine.Feature is: projector distance is far away, to project about 70 inches of pictures greatly about about 3M; Owing to adopting spherical lens, glass common grinding mode can be used to process.The second be on the basis of the first by wherein make plastic aspheric lens into 2 ~ 3 spherical lenses; Feature is: can shorten projector distance, thus reaches projector distance also can project identical about 70 inches of pictures when about 1M; Because eyeglass is aspheric design, common grinding mode is difficult to make, and therefore generally can adopt the processing and manufacturing of plastic shaping mode.Because the second camera lens adopts plastic shaping mode, the control of aspheric surface face type becomes a difficult point, and the difficulty of processing that therefore can reach high-resolution camera lens is large, and the construction cycle is long, and cost is high.
Summary of the invention
Object of the present invention is exactly for above-mentioned the deficiencies in the prior art, and provide a kind of camera lens easily to process, the cycle is short, the short burnt high definition projection lens structure that cost is low.
The technical solution used in the present invention is as follows:
A kind of short burnt high definition projection lens structure, it is characterized in that it comprises 13 eyeglasses be arranged in order, they organize first before being followed successively by is negative meniscus lens, front group second is negative meniscus lens, front group the 3rd is single concavees lens, front group the 4th is concave-concave spherical lens, front group the 5th is biconvex lens, front group the 6th, seven is balsaming lens, rear group of first is biconvex lens, and rear group second is negative meniscus lens, and rear group of third and fourth sheet is balsaming lens, rear group the 5th is plano-convex lens, and rear group the 6th is biconvex lens.
Before described, group the 6th, seven is followed successively by biconvex lens and positive meniscus shaped lens.
Described rear group of third and fourth sheet is followed successively by biconcave lens and biconvex lens.
The assembly parts of each eyeglass described adopt aluminium matter structural member.
Beneficial effect of the present invention has:
The present invention all adopts spherical lens to combine, glass grinding is easy to process, low processing cost, is applicable to batch production, and structure adopts aluminum design part, group adjustment before focusing mode adopts, thus the problem of difficulty when avoiding whole group of focusing, is moved because whole lens quality is large.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described:
As shown in Figure 1, the present invention has 13 eyeglass compositions, they are followed successively by eyeglass 1 for negative meniscus lens, eyeglass 2 is negative meniscus lens, eyeglass 3 is single concavees lens, eyeglass 4 is concave-concave spherical lens, eyeglass 5 is biconvex lens, and eyeglass 6,7 is balsaming lens (wherein eyeglass 6 is specially biconvex lens, and eyeglass 7 is positive meniscus shaped lens), eyeglass 8 is biconvex lens, eyeglass 9 is negative meniscus lens, and eyeglass 10,11 is balsaming lens (wherein eyeglass 10 is biconcave lens, and eyeglass 11 is biconvex lens), eyeglass 12 is plano-convex lens, and eyeglass 13 is biconvex lens.Above-mentioned all eyeglasses all adopt aluminum design part to fix.
The camera lens of the present invention's composition is used for being arranged on liquid crystal board front, a color-combination prism is laid between liquid crystal board and camera lens, the logical electrical distance about 26 ~ 28mm of optical axis in color-combination prism, color-combination prism is 2 ~ 4mm to the clearance of the last a slice lens of camera lens, and color-combination prism is 8 ~ 10mm to the clearance of liquid crystal board.The present invention adopts three liquid crystal boards, size adopts and is greater than 0.7 inch, be less than 0.9 inch, resolution is greater than the object plane of high-definition liquid crystal plate as projection lens of 1024*768, reach after lens imaging: projector distance 1M, projected picture diagonal length about 65 inches, and the requirement (i.e. MTF>50%@59lp/mm) of full HD resolution can be met, the eccentric >0:10(of image space is namely along the horizontal direction of camera lens, image upwards at least departs from 100%), camera lens f/#:2.3, full Shi Chang Transverse is to aberration <0.8 pix, resemble surface uniformity >75%.1M of the present invention throws about 65 inches, meets short burnt performance, the eccentric >0:10 of image space, makes projector easy for installation, without the trapezoidal picture of circuit calibration, thus can avoid the problem reducing image display quality for doing keystone.
Other the undeclared part that the present invention relates to is same as the prior art.
Claims (2)
1. one kind short burnt high definition projection lens structure, it is characterized in that it comprises 13 eyeglasses be arranged in order, they organize first before being followed successively by is negative meniscus lens, front group second is negative meniscus lens, front group the 3rd is single concavees lens, front group the 4th is concave-concave spherical lens, front group the 5th is biconvex lens, front group the 6th, seven is balsaming lens, rear group of first is biconvex lens, and rear group second is negative meniscus lens, and rear group of third and fourth sheet is balsaming lens, rear group the 5th is plano-convex lens, and rear group the 6th is biconvex lens; Before described, group the 6th, seven is followed successively by biconvex lens and positive meniscus shaped lens; Described rear group of third and fourth sheet is followed successively by biconcave lens and biconvex lens.
2. short burnt high definition projection lens structure according to claim 1, is characterized in that the assembly parts of each eyeglass described adopt aluminium matter structural member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210502203.1A CN102944924B (en) | 2012-11-30 | 2012-11-30 | Short-focus high-definition projection lens structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210502203.1A CN102944924B (en) | 2012-11-30 | 2012-11-30 | Short-focus high-definition projection lens structure |
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| Publication Number | Publication Date |
|---|---|
| CN102944924A CN102944924A (en) | 2013-02-27 |
| CN102944924B true CN102944924B (en) | 2015-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210502203.1A Active CN102944924B (en) | 2012-11-30 | 2012-11-30 | Short-focus high-definition projection lens structure |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105785557B (en) * | 2016-03-10 | 2018-05-01 | 浙江水晶光电科技股份有限公司 | A kind of ultrashort out-of-focus projection's object lens |
| CN108927994A (en) * | 2017-05-22 | 2018-12-04 | 三纬国际立体列印科技股份有限公司 | Three-dimensional printing device |
| CN108873259A (en) * | 2018-07-17 | 2018-11-23 | 安徽仁和光电科技有限公司 | A kind of ultrashort full HD projection lens of coke |
| CN109298512A (en) * | 2018-12-04 | 2019-02-01 | 湖州清维电子科技有限公司 | A kind of short focus engineering projection lens |
| CN113495357B (en) * | 2020-03-19 | 2023-08-25 | 成都理想境界科技有限公司 | Projection objective and scanning display device |
| CN111443451A (en) * | 2020-05-25 | 2020-07-24 | 深圳市沃特隆科技有限公司 | 360-degree shooting outer lens for camera external connection and use method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1285523A (en) * | 1999-04-30 | 2001-02-28 | 索尼公司 | Zoom lens |
| CN201926807U (en) * | 2010-12-17 | 2011-08-10 | 凤凰光学(上海)有限公司 | Fixed focus-type projector lens |
| CN202975454U (en) * | 2012-11-30 | 2013-06-05 | 无锡羿飞科技有限公司 | Short-focus high-definition projection lens structure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004361440A (en) * | 2003-05-30 | 2004-12-24 | Seiko Precision Inc | Photographic lens and imaging apparatus using the same |
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2012
- 2012-11-30 CN CN201210502203.1A patent/CN102944924B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1285523A (en) * | 1999-04-30 | 2001-02-28 | 索尼公司 | Zoom lens |
| CN201926807U (en) * | 2010-12-17 | 2011-08-10 | 凤凰光学(上海)有限公司 | Fixed focus-type projector lens |
| CN202975454U (en) * | 2012-11-30 | 2013-06-05 | 无锡羿飞科技有限公司 | Short-focus high-definition projection lens structure |
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| CN102944924A (en) | 2013-02-27 |
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Address after: 214213 Jiangsu City, Yixing Province Economic and Technological Development Zone, Wuxi, Xing Xing Road, No. 10, Yixing Photoelectric Industrial Park, room 3, room 101 Patentee after: WUXI SEEMILE TECHNOLOGY Co.,Ltd. Address before: 214203 Jiangsu city of Wuxi province Yixing City Jincheng Road Economic Development Zone No. 11 Yixing Pioneer Park building D8 Patentee before: WUXI E-SPHERE TECHNOLOGY Co.,Ltd. |
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Effective date of registration: 20160310 Address after: 214213 Jiangsu City, Yixing Province Economic and Technological Development Zone, Wuxi, Xing Xing Road, No. 10, Yixing Photoelectric Industrial Park, room 3, room 101 Patentee after: WUXI SEEMILE LASER DISPLAY TECHNOLOGY Co.,Ltd. Address before: 214213 Jiangsu City, Yixing Province Economic and Technological Development Zone, Wuxi, Xing Xing Road, No. 10, Yixing Photoelectric Industrial Park, room 3, room 101 Patentee before: WUXI SEEMILE TECHNOLOGY Co.,Ltd. |