CN201017094Y - Projecting lens for big screen combined split joint wall - Google Patents
Projecting lens for big screen combined split joint wall Download PDFInfo
- Publication number
- CN201017094Y CN201017094Y CNU2007200896289U CN200720089628U CN201017094Y CN 201017094 Y CN201017094 Y CN 201017094Y CN U2007200896289 U CNU2007200896289 U CN U2007200896289U CN 200720089628 U CN200720089628 U CN 200720089628U CN 201017094 Y CN201017094 Y CN 201017094Y
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Abstract
The utility model relates to a projection camera lens used on large-screen combined tiled display walls; the lens combination of the camera lens consists of 11 groups of 12-piece lenses of a single negative lens, a single negative lens, a single negative lens, a single positive lens, a single negative lens, a single positive lens, a single negative lens, a single positive lens, a doublet lens and a single positive lens which are arranged in imaging sequence. All these lenses are fixed in a lens barrel in turns; the front end of the lens combination is equipped with a focusing ring which is connected with the lens barrel by threads and with a bayonet ring groove which is equipped on the front end of the main body shell in a sliding way by a connection pin. The projection lens can fully meet the use function requirements of the large-screen combined tiled display wall and effectively solve the technical contradiction of low cost and high imaging quality; the utility model not only has high resolving capacity and high-quality imaging of clear image display but also has excellent image evenness on the whole screen.
Description
Technical field
The utility model belongs to optical video shadow casting technique field, is the combined and spliced wall projection lens of a kind of giant-screen.
Background technology
At present, in image information technical development field, shadow casting technique more and more payes attention to the combined and spliced wall of giant-screen.Since the combined and spliced wall of giant-screen be projected in that requirement can not have any smear on the image, and frame can not have metamorphopsic distortion all around, also requires to have high resolving power, high brightness, high-contrast, image fault is little, brightness is even, clear display, high imaging qualities such as whole screen image good uniformity.Therefore also more and more higher to the requirement of projection image optical system, but projection lens of the prior art is limit because of the architectural characteristic that is subjected to combination of mirror system and focusing system, its projection imaging quality can not satisfy the requirement of the combined and spliced wall of giant-screen shadow casting technique, and production and processing cost height, be unsuitable for producing in enormous quantities.
The utility model content
The purpose of this utility model provides a kind of high imaging quality that can satisfy the large-screen splicing projection wall, can also reduce cost good manufacturability, the combined and spliced wall projection lens of the giant-screen that is suitable for producing in batches simultaneously.
Realize that the technical scheme that the purpose of this utility model is taked is: this camera lens comprises main body cover, focusing ring, combination of lenses, wherein, combination of lenses be by on same optical axis by the tactic single negative lens in imaging side, single negative lens, single negative lens, single-positive-lens, single negative lens, single-positive-lens, single negative lens, single-positive-lens, cemented doublet, single-positive-lens, 11 groups of 12 lens of single-positive-lens are formed, and be arranged in order and be packed in the lens barrel, front end at combination of lenses is provided with focusing ring, this focusing ring adopts with lens barrel and is threaded, and is slidingly connected by the bayonet socket annular groove that connects pin and the setting of main body cover front end.
The single negative lens of first of described imaging side adopts the K9 glass material, and its lens arrangement is the aspheric surface shape.
The structural arrangement of each lens is in the described combination of lenses: first single negative lens has nonreentrant surface in the imaging side; Second single negative lens has nonreentrant surface in the imaging side; The 3rd single negative lens has the concave-concave surface; The 4th single-positive-lens has nonreentrant surface in the imaging side; The 5th single negative lens has nonreentrant surface in the imaging side; The 6th single-positive-lens has nonreentrant surface in the imaging side; The 7th single negative lens, be the plane in the imaging side; The 8th single-positive-lens has the biconvex surface; The 9th lens are cemented doublet, have recessed surface in the imaging side; The tenth single-positive-lens has nonreentrant surface in the imaging side; The 11 single-positive-lens has nonreentrant surface in the imaging side.
The combined and spliced wall projection lens of giant-screen according to such scheme is made uses by mating with projector, can satisfy the usability requirement of large tiled display wall well.Compared with prior art: this camera lens can effectively solve technical contradiction low-cost and high imaging quality, not only has high resolving power, high brightness, high-contrast, and image fault is little, and brightness is even, the advantage of clear display, whole screen image good uniformity.And lens only need adopt the monocular tube structure of ordinary optical glass, therefore, good manufacturability, assembling qualification rate height is fit to requirement of mass production.
Description of drawings
Fig. 1 is a structural representation of the present utility model,
Embodiment
The combined and spliced wall projection lens of giant-screen of the present utility model, comprise main body cover 21, focusing ring 16, combination of lenses, wherein, combination of lenses is the single negative lens 1 that is arranged in order by the imaging side by on same optical axis, single negative lens 2, single negative lens 3, single-positive-lens 4, single negative lens 5, single-positive-lens 6, single negative lens 7, single-positive-lens 8, cemented doublet 9, single-positive-lens 10, the combination of lenses of single-positive-lens 11 constitutes, each lens is packed in the lens barrel successively according to each other airspace distance respectively, its spacer does not separate: the airspace between first lens and second lens is 7.4mm, airspace between second lens and the 3rd lens is 9.76mm, airspace between the 3rd lens and the 4th lens is 14.17mm, airspace between the 4th lens and the 5th lens is 38.55mm, airspace between the 5th lens and the 6th lens is 1.89+0.15mm, airspace between the 6th lens and the 7th lens is 5.01mm, airspace between the 7th lens and the 8th lens is 0.74mm, airspace between the 8th lens and the 9th lens is 1.69mm, airspace between the 9th lens and the tenth lens is 0.2mm, airspace between the tenth lens and the 11 lens is 10.02mm, and the airspace between the 11 lens and the 12 lens is 9.4mm.The optical system structure of 11 groups of 12 lens that this combination of lenses adopts is suitable for the combined and spliced wall of high-end giant-screen projector and uses.
Front end at combination of lenses is provided with focusing ring 16, this focusing ring 16 is threaded with lens barrel 17, and be slidingly connected with main body cover 21 by connecting pin 19, main body cover 21 front ends are provided with and are connected the bayonet socket annular groove 18 that pin 19 matches with focusing ring 16 connecting portions, can prevent to focus 16 and main body cover 21 between displacement to axial.Lens barrel 17 excircles are provided with spacing slotted eye, match with stop screw 20 on the main body cover 21, can limit the axial range of focusing.When rotating the focusing ring 16 of object lens, being assemblied in the sphere guide pin bushing that connects on the pin 19 can slide in bayonet socket annular groove 18, and lens barrel 17 relative camera lens bayonet sockets 13 axially move, and realize the focusing of camera lens.The image that adopts this structure can avoid object lens to rotate and produce rocks.Along with focusing ring 16 rotation is controlled the extreme position of focusing by stop screw 20, when adjusting image, guarantee the accurate position of focusing with dog screw 14.Label 15 is the camera lens protecgulum, and label 12 is the camera lens bonnet, and label 13 is for cooperating the camera lens bayonet socket of the projector that is installed.
In this case, first lens of imaging side adopt the K9 glass material, and its lens are the aspheric surface shape, not only can reduce cost, and guarantee the needs of usability; To the high gap of accuracy requirement between each lens in the camera lens, its spacer ring adopts with the sphere of lens surface coupling with the surface of contact of lens and contact, can guarantee ± tolerance of 0.02mm, thereby can reduce the difficulty of assembling greatly, the precision that assurance is assembled.In this projection objective system, what adopt is telecentric beam path in image space, make angle≤1 ° of outgoing chief ray and optical axis, and by whole the moving of focusing ring instrumentality mirror system, can compensate the imaging surface change in displacement that the mismachining tolerance owing to lens arrangement causes, thereby reached the high imaging quality of high resolving power, image clear display, and the ideal effect of whole screen image good uniformity.
Claims (5)
1. combined and spliced wall projection lens of giant-screen, comprise main body cover, focusing ring and combination of lenses, it is characterized in that: combination of lenses be by on same optical axis by the tactic single negative lens in imaging side, single negative lens, single negative lens, single-positive-lens, single negative lens, single-positive-lens, single negative lens, single-positive-lens, cemented doublet, single-positive-lens, 11 groups of 12 lens of single-positive-lens are formed, and be arranged in order and be packed in the lens barrel, front end at combination of lenses is provided with focusing ring, this focusing ring adopts with lens barrel and is threaded, and is slidingly connected by the bayonet socket annular groove that connects pin and the setting of main body cover front end.
2. the combined and spliced wall projection lens of giant-screen according to claim 1, it is characterized in that: the structural arrangement of each lens is in the described combination of lenses: first single negative lens has nonreentrant surface in the imaging side; Second single negative lens has nonreentrant surface in the imaging side; The 3rd single negative lens has the concave-concave surface; The 4th single-positive-lens has nonreentrant surface in the imaging side; The 5th single negative lens has nonreentrant surface in the imaging side; The 6th single-positive-lens has nonreentrant surface in the imaging side; The 7th single negative lens, be the plane in the imaging side; The 8th single-positive-lens has the biconvex surface; The 9th lens are cemented doublet, have recessed surface in the imaging side; The tenth single-positive-lens has nonreentrant surface in the imaging side; The 11 single-positive-lens has nonreentrant surface in the imaging side.
3. the combined and spliced wall projection lens of giant-screen according to claim 1 is characterized in that: the spacing distance between described each lens is; Airspace between first lens and second lens is 7.4mm, airspace between second lens and the 3rd lens is 9.76mm, airspace between the 3rd lens and the 4th lens is 14.17mm, airspace between the 4th lens and the 5th lens is 38.55mm, airspace between the 5th lens and the 6th lens is 1.89+0.15mm, airspace between the 6th lens and the 7th lens is 5.01mm, airspace between the 7th lens and the 8th lens is 0.74mm, airspace between the 8th lens and the 9th lens is 1.69mm, airspace between the 9th lens and the tenth lens is 0.2mm, airspace between the tenth lens and the 11 lens is 10.02mm, airspace between the 11 lens and the 12 lens is 9.4mm, is 3mm between the air between prism and the chip.
4. the combined and spliced wall projection lens of giant-screen according to claim 1 and 2 is characterized in that: first lens of described imaging side adopt the K9 glass material, and its lens arrangement is the aspheric surface shape.
5. the combined and spliced wall projection lens of giant-screen according to claim 1 is characterized in that: described connecting pin nails on the sphere guide pin bushing is housed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200896289U CN201017094Y (en) | 2007-03-06 | 2007-03-06 | Projecting lens for big screen combined split joint wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200896289U CN201017094Y (en) | 2007-03-06 | 2007-03-06 | Projecting lens for big screen combined split joint wall |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201017094Y true CN201017094Y (en) | 2008-02-06 |
Family
ID=39057590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200896289U Expired - Lifetime CN201017094Y (en) | 2007-03-06 | 2007-03-06 | Projecting lens for big screen combined split joint wall |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201017094Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915983A (en) * | 2010-07-27 | 2010-12-15 | 利达光电股份有限公司 | Continuous zooming projection lens |
| CN102998768A (en) * | 2011-09-09 | 2013-03-27 | 亚洲光学股份有限公司 | Lens module |
| CN103091818A (en) * | 2013-02-22 | 2013-05-08 | 无锡北方湖光光电有限公司 | Visible light high resolution double-field of view charge-coupled device (CCD) lens |
| CN108873231A (en) * | 2018-08-28 | 2018-11-23 | 厦门力鼎光电股份有限公司 | A kind of lens focusing device |
| CN115220181A (en) * | 2022-04-28 | 2022-10-21 | 福建福光股份有限公司 | Large-target-surface low-temperature lens and imaging method thereof |
| WO2022262268A1 (en) * | 2021-06-17 | 2022-12-22 | 杭州微影软件有限公司 | Lens apparatus and photographing apparatus |
-
2007
- 2007-03-06 CN CNU2007200896289U patent/CN201017094Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915983A (en) * | 2010-07-27 | 2010-12-15 | 利达光电股份有限公司 | Continuous zooming projection lens |
| CN102998768A (en) * | 2011-09-09 | 2013-03-27 | 亚洲光学股份有限公司 | Lens module |
| CN103091818A (en) * | 2013-02-22 | 2013-05-08 | 无锡北方湖光光电有限公司 | Visible light high resolution double-field of view charge-coupled device (CCD) lens |
| CN103091818B (en) * | 2013-02-22 | 2014-12-03 | 无锡北方湖光光电有限公司 | Visible light high resolution double-field of view charge-coupled device (CCD) lens |
| CN108873231A (en) * | 2018-08-28 | 2018-11-23 | 厦门力鼎光电股份有限公司 | A kind of lens focusing device |
| CN108873231B (en) * | 2018-08-28 | 2023-10-24 | 厦门力鼎光电股份有限公司 | Lens focusing device |
| WO2022262268A1 (en) * | 2021-06-17 | 2022-12-22 | 杭州微影软件有限公司 | Lens apparatus and photographing apparatus |
| CN115220181A (en) * | 2022-04-28 | 2022-10-21 | 福建福光股份有限公司 | Large-target-surface low-temperature lens and imaging method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080206 |
|
| CX01 | Expiry of patent term |