CN203069867U - Short-focus projection lens structure with projection ratio of 0.52 - Google Patents
Short-focus projection lens structure with projection ratio of 0.52 Download PDFInfo
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- CN203069867U CN203069867U CN 201220647839 CN201220647839U CN203069867U CN 203069867 U CN203069867 U CN 203069867U CN 201220647839 CN201220647839 CN 201220647839 CN 201220647839 U CN201220647839 U CN 201220647839U CN 203069867 U CN203069867 U CN 203069867U
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Abstract
The utility model discloses a short-focus projection lens structure with a projection ratio of 0.52. The short-focus projection lens structure is characterized by comprising twelve sequentially-arranged lenses, wherein a front-group first piece is negative meniscus asphericalal lens, a front-group second piece is negative meniscus spherical lens, a front-group third piece is biconcave spherical lens, a front-group fourth piece is single-convex spherical lens, a rear-group first piece is negative meniscus spherical lens, a rear-group second piece is biconvex lens, a rear-group third piece is a cemented lens of a biconcave lens and a biconvex lens, a rear-group fourth piece is a cemented lens of a biconvex lens and a biconcave lens, a rear-group fifth piece is biconvex lens and a rear-group sixth piece is biconvex lens. The short-focus projection lens structure is ultra-short in distance and low in brightness loss, can be matched with multiple rear projection machines to manufacture an ultra-thin large-screen rear projector and can be matched with various digital projectors, and is suitable for various occasions required to project large pictures in an ultra-short distance.
Description
Technical field
The utility model relates to a kind of short out-of-focus projection lens construction, especially relates to a kind of short out-of-focus projection lens construction that is applied to large screen back projection, giant-screen or large-scale ball curtain splicing projection.
Background technology
Usually used lens focus is all long in the rear-projection product, and therefore when realizing large screen back projection, there is the bigger problem of identical distance in the thickness of 100 cun rear-projections equally often more than 1 meter aspect large-screen splicing.And in ball-screen projection the basic fish eye lens that adopts, but fish eye lens all can not show a candle to effective that the splicing of short-focus mirror head merges on brightness and image quality when large-scale ball curtain.
Digital projector is mainly based on three kinds of core technologies, be DLP (Digital Light Prosesing, be target surface with DMD, reflective illumination), LCD(Liquid Crystal Display, the transmission-type illumination), D-ILA (Direct-Drive Image Light Amplifier, be target surface with LCOS, reflective illumination), the target surface that adopts is one or three, these othernesses directly cause the constructional difference of digital projector, have also directly caused the difference of the optical texture (closing light/Amici prism group gauge) of these digital projectors.In optical system, in the projection lens back, the preceding difference of closing light/Amici prism group (TIR) optical thickness of image planes (target surface), bring for the whole discrepancy of optical projection system and have a strong impact on, especially with the relevant aberration of aberration.So common short out-of-focus projection camera lens has a great difference in design, show that back work distance is different from difference, operation wavelength, aberration is got the processing mode difference.
The running parameter of short out-of-focus projection camera lens comprises following four indexs under the regular situation: field angle, back work distance are from, relative aperture, adaptation image height.These four index mutual restriction, interrelated play a leading role to aberration, strengthen any one index, all can influence other three indexs.Therefore, in short out-of-focus projection camera lens, be difficult to accomplish the projection ratio below 0.50, and the transmitance more than 95% is arranged.
Summary of the invention
The purpose of this utility model is to overcome the deficiency that prior art exists, and a kind of minimizing optical energy loss is provided, and realizes that the projection of same frame brightness is than the short out-of-focus projection lens construction that is 0.52.
The technical solution adopted in the utility model is as follows:
A kind of projection than the short out-of-focus projection lens construction that is 0.52, it is characterized in that it comprises 12 eyeglasses that are arranged in order, first of group was the negative meniscus non-spherical lens before they were followed successively by, second of preceding group is the negative meniscus spherical lens, the 3rd of preceding group is the concave-concave spherical lens, the 4th of preceding group is single protruding spherical lens, first of back group is the negative meniscus spherical lens, second of back group is biconvex lens, the 3rd of back group is the balsaming lens of biconcave lens and biconvex lens, the 4th of back group is the balsaming lens of biconvex lens and biconcave lens, the 5th of back group is biconvex lens, the 6th of back group is biconvex lens.。
Camera lens projection after described 12 eyeglasses combination is than for less than 0.52, and field angle is greater than 80 degree, and back work distance is from greater than 29 millimeters.
The beneficial effects of the utility model have:
1, very-short-reach, the traditional relatively projector of machine of short out-of-focus projection can project bigger picture in short projector distance.So just satisfy the pacing items of having produced the ultra-thin large-screen rear-projection, can realize that 100 cun rear-projection thickness is accomplished below 1 meter.
2, the luminance loss is little, and the height of brightness is determining the suitable environment for use of projector and the size of projection picture.The projector distance that short out-of-focus projection machine is short, can reduce the optical energy loss that causes because of long projector distance, so realize identical picture brightness, the output brightness of projector can be lower than common projector, this just means also that in the selection of bulb the bulb power of short out-of-focus projection machine can reduce; The transmitance of the camera lens of this structure is up to more than 95%, and non-general short out-of-focus projection camera lens (80% ~ 90%) can be compared.
3, this camera lens mainly can be used in ultra-thin large-screen rear-projection (100 cun rear-projection thickness only is about 1 meter), also can be used in occasions such as Window Display, common display space, electronics exhibition of paintings, recreation, display and demonstration, high-grade commercial undertaking foreground, no matter short out-of-focus projection machine is to be applied in fields such as markets such as family expenses, commercial affairs, education, public demonstration, city lighting engineering, advertisement, product display and demonstration, military training, dimensional orientation and panorama analysis.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
The utility model is further described below in conjunction with accompanying drawing:
As shown in Figure 1, the utility model has 12 eyeglasses compositions.Its project organization is the eyeglass 1 that is arranged in order, 2,3,4,5,6,7,8,9,10,11,12. wherein, eyeglass 1 is the negative meniscus non-spherical lens, eyeglass 2 also is the negative meniscus spherical lens, eyeglass 3 is the concave-concave spherical lens, eyeglass 4 is single protruding spherical lens, eyeglass 5 is the negative meniscus spherical lens, eyeglass 6 is biconvex lens, eyeglass 7 and 8 is the gummed lens set, wherein eyeglass 7 is biconcave lens, eyeglass 8 is biconvex lens, eyeglass 9 and 10 is the gummed lens set, and wherein eyeglass 9 is biconvex lens, eyeglass 10 is biconcave lens, eyeglass 11 is biconvex lens, eyeglass 12 is biconvex lens.
In the utility model, according to the characteristics of using, the field angle of described short out-of-focus projection camera lens is greater than 80 degree; The relative value aperture is F/2.0; Back work distance is from greater than 29 millimeters.
In the utility model, according to the characteristics of using, described short out-of-focus projection camera lens has single target surface and three target face structures based on three kinds of DLP, LCD, D-ILA.
Concrete optical property in the above-mentioned camera lens is: focal distance f '=12 mm; Relative aperture: D/f'=1/2.0; Full field angle: 2 ω are greater than 80 degree; It is instead more than being L'/f'=14.5 (L' be optics back work distance from); Optical length is 167 millimeters; The maximum eyeglass bore of camera lens is 75 millimeters of Ф, is non-spherical lens, and this structure has good aberration and image quality.
Other undeclared part that the utility model relates to is same as the prior art.
Claims (2)
1. one kind is throwed than the short out-of-focus projection lens construction that is 0.52, it is characterized in that it comprises 12 eyeglasses that are arranged in order, first of group was the negative meniscus non-spherical lens before they were followed successively by, second of preceding group is the negative meniscus spherical lens, the 3rd of preceding group is the concave-concave spherical lens, the 4th of preceding group is single protruding spherical lens, first of back group is the negative meniscus spherical lens, second of back group is biconvex lens, the 3rd of back group is the balsaming lens of biconcave lens and biconvex lens, the 4th of back group is the balsaming lens of biconvex lens and biconcave lens, the 5th of back group is biconvex lens, the 6th of back group is biconvex lens.
2. projection according to claim 1 is than the short out-of-focus projection lens construction that is 0.52, it is characterized in that camera lens projection after described 12 eyeglasses combination than for less than 0.52, and field angle is greater than 80 degree, and back work distance is from greater than 29 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220647839 CN203069867U (en) | 2012-11-30 | 2012-11-30 | Short-focus projection lens structure with projection ratio of 0.52 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220647839 CN203069867U (en) | 2012-11-30 | 2012-11-30 | Short-focus projection lens structure with projection ratio of 0.52 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203069867U true CN203069867U (en) | 2013-07-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220647839 Expired - Lifetime CN203069867U (en) | 2012-11-30 | 2012-11-30 | Short-focus projection lens structure with projection ratio of 0.52 |
Country Status (1)
| Country | Link |
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| CN (1) | CN203069867U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10451841B2 (en) | 2014-11-18 | 2019-10-22 | Samsung Electro-Mechanics Co., Ltd. | Lens module |
-
2012
- 2012-11-30 CN CN 201220647839 patent/CN203069867U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10451841B2 (en) | 2014-11-18 | 2019-10-22 | Samsung Electro-Mechanics Co., Ltd. | Lens module |
| US11960063B2 (en) | 2014-11-18 | 2024-04-16 | Samsung Electro-Mechanics Co., Ltd. | Lens module |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 214203, room 3, building 10, Yixing photoelectric industry park, No. 101, apricot Road, Yixing economic and Technological Development Zone, Jiangsu, Wuxi 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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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160324 Address after: 214203, room 3, building 10, Yixing photoelectric industry park, No. 101, apricot Road, Yixing Economic Development Zone, Jiangsu, Wuxi Patentee after: WUXI SEEMILE LASER DISPLAY TECHNOLOGY Co.,Ltd. Address before: 214203, room 3, building 10, Yixing photoelectric industry park, No. 101, apricot Road, Yixing economic and Technological Development Zone, Jiangsu, Wuxi Patentee before: WUXI SEEMILE TECHNOLOGY Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20130717 |
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| CX01 | Expiry of patent term |