CN201965282U - Focusing regulation mechanism for projection lens of projector - Google Patents
Focusing regulation mechanism for projection lens of projector Download PDFInfo
- Publication number
- CN201965282U CN201965282U CN2011200773726U CN201120077372U CN201965282U CN 201965282 U CN201965282 U CN 201965282U CN 2011200773726 U CN2011200773726 U CN 2011200773726U CN 201120077372 U CN201120077372 U CN 201120077372U CN 201965282 U CN201965282 U CN 201965282U
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- positioning reference
- lens
- plate
- regulating
- reference plate
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Abstract
The utility model relates to a focusing regulation mechanism for a projection lens of a projector, which is provided with a positioning reference plate which is externally connected with the side wall of the projection lens. A lens regulating plate is arranged outside the positioning reference plate. The middle parts of the positioning reference plate and the lens regulating plate are respectively provided with a positioning reference groove and an emboss rotating shaft which are aligned and matched manually. The front part of the part between the positioning reference plate and the lens regulating plate is connected with a pair of lens regulating screw suites. In the actual work, the positioning reference plate and the lens regulating plate are positioned by matching of the positioning reference groove and the emboss rotating shaft which are respectively arranged in the middle of the positioning reference plate and the lens regulating plate; a screw regulating structure is adopted to carry out fine regulation, so that the lens rotates around a contact point of the groove and an emboss; and by regulating the screw suite, an optical axis of the lens is coincident with an optical axis of a projection imaging optical path, so that the focusing regulation mechanism has a good core alignment effect. Meanwhile, the regulating structure can also have a good post correction effect under the condition that a core of a lens monomer is shifted.
Description
Technical field
The utility model belongs to the optical projection display device technical field, relates to a kind of projector projection lens focusing adjusting mechanism.
Background technology
At present, the contraposition mode of projector's projection lens generally all adopts the structure that camera lens 4 and positioning reference plate 1 direct screw are fixed as shown in Figure 1, its bearing accuracy ensures by the way that improves camera lens reference field and display chip locating surface machining precision, this mode in traditional projector, can ensure well camera lens to the core precision, and then reach good projection sharpness.In using the miniature DLP projector of led light source, for the squeezed light body amasss, reduce the size of complete machine, generally can in imaging optical path and illumination path, add a TIR prism 5, the TIR prism is when the squeezed light body is long-pending, can enlarging lens to the core error, make the sharpness of projection imaging that certain decline be arranged, strengthened the production difficulty.
The utility model content
The purpose of this utility model is the problem that prior art exists is solved, a kind of projector's projection lens focusing adjusting mechanism of simple in structure, application easy to implement is provided, this focusing adjusting mechanism can be finely tuned camera lens easily to the core position, thereby improve the sharpness of projection imaging, satisfy the high-precision requirement of the imaging system in the projecting light path of miniature DLP projector.
The technical scheme that adopts is so for achieving the above object: the projector's projection lens focusing adjusting mechanism that is provided has a positioning reference plate external with the projection lens sidewall, foreign side at the positioning reference plate is provided with a camera adjusting plate, be respectively equipped with positioning reference groove and salient point rotating shaft that contraposition cooperates at the middle part of positioning reference plate and camera adjusting plate two plates, the front portion between positioning reference plate and camera adjusting plate two plates connects is equipped with secondary mirror head adjustment screw external member.
Principle of work of the present utility model is that the positioning reference plate is located by positioning reference groove set between plate and cooperating of salient point rotating shaft with the camera adjusting plate, adopts the screw adjustment structure to finely tune, and camera lens is rotated around the contact point of groove and salient point; By the adjusting screw external member, make the optical axis of camera lens and the optical axis coincidence of projection imaging light path, thereby play well the core effect, this adjustment structure exists at lens monomer under the situation of core shift and also can play good later stage corrective action simultaneously.
Compared with prior art, novel structure of the present utility model, simple to operation, be easy to produce and practice, guaranteed projector lens focusing position accurately and balance, satisfied in the micro projection system that uses the TIR prism camera lens to the accuracy requirement of core.
Description of drawings
Fig. 1 is the work structuring synoptic diagram of projection lens contraposition mechanism of traditional projector.
Fig. 2 is the work structuring synoptic diagram of a specific embodiment of the utility model.
Fig. 3 is the synoptic diagram of the utility model rotating shaft strong point structure.
Number in the figure is represented respectively: 1-positioning reference plate, and 2-camera adjusting plate, the rotating shaft of 2a-salient point, the 3-camera lens is adjusted screw external member, 4-projection lens, 5-TIR prism, 6-digital micro-mirror device (DMD).
Embodiment
Below in conjunction with accompanying drawing the utility model content is described further, but concrete form of implementation of the present utility model is not limited in following embodiment.
Referring to accompanying drawing, projector described in the utility model projection lens focusing adjusting mechanism is adjusted screw external member 3 by positioning reference plate 1, camera adjusting plate 2 and camera lens and is formed.The positioning reference plate 1 external projection lens below that is fixed on, camera adjusting plate 2 is arranged on the positioning reference plate 1 time, be respectively equipped with positioning reference groove and salient point rotating shaft 2a that contraposition cooperates at the middle part of two plates, contraposition respectively has a screw and is communicated with to go into adjusting screw between positioning reference plate 1 and camera adjusting plate 2 front panels, forms camera lens and adjusts screw external member 3.
The utility model is mainly realized the fine adjustment function of projection lens by three big parts, first parts are positioning reference plates 1 of camera lens, second parts are structural members of the band salient point rotating shaft (strong point) of 2 of positioning reference plate 1 and camera adjusting plates, its effect is to withstand the camera lens adjustment screw external member 3 that 1, the three parts of camera lens positioning reference datum plate then are provided in a side of positioning reference plate 1 and 2 liang of prelaminar parts of camera adjusting plate.
Claims (1)
1. projector projection lens focusing adjusting mechanism, it is characterized in that having a positioning reference plate (1) external with projection lens (4) sidewall, foreign side is provided with a camera adjusting plate (2) at positioning reference plate (1), be respectively equipped with positioning reference groove and salient point rotating shaft (2a) that contraposition cooperates at the middle part of positioning reference plate (1) and camera adjusting plate (2) two plates, the front portion between positioning reference plate (1) and camera adjusting plate (2) two plates connects is equipped with secondary mirror head adjustment screw external member (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200773726U CN201965282U (en) | 2011-03-22 | 2011-03-22 | Focusing regulation mechanism for projection lens of projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200773726U CN201965282U (en) | 2011-03-22 | 2011-03-22 | Focusing regulation mechanism for projection lens of projector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201965282U true CN201965282U (en) | 2011-09-07 |
Family
ID=44527827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200773726U Expired - Fee Related CN201965282U (en) | 2011-03-22 | 2011-03-22 | Focusing regulation mechanism for projection lens of projector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201965282U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105022209A (en) * | 2014-04-16 | 2015-11-04 | 信泰光学(深圳)有限公司 | Micro-projector |
| CN111025673A (en) * | 2018-10-09 | 2020-04-17 | 深圳市点睛创视技术有限公司 | Prism adjusting device and method of projection optical machine |
| CN112394535A (en) * | 2020-11-25 | 2021-02-23 | 天津津航技术物理研究所 | Multi-dimensional optical axis adjusting mechanism of refrigeration type zoom infrared camera |
| CN113542733A (en) * | 2021-06-25 | 2021-10-22 | 苏州智瞳道和显示技术有限公司 | Method and system for adjusting and measuring definition of optical machine |
-
2011
- 2011-03-22 CN CN2011200773726U patent/CN201965282U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105022209A (en) * | 2014-04-16 | 2015-11-04 | 信泰光学(深圳)有限公司 | Micro-projector |
| CN111025673A (en) * | 2018-10-09 | 2020-04-17 | 深圳市点睛创视技术有限公司 | Prism adjusting device and method of projection optical machine |
| CN112394535A (en) * | 2020-11-25 | 2021-02-23 | 天津津航技术物理研究所 | Multi-dimensional optical axis adjusting mechanism of refrigeration type zoom infrared camera |
| CN113542733A (en) * | 2021-06-25 | 2021-10-22 | 苏州智瞳道和显示技术有限公司 | Method and system for adjusting and measuring definition of optical machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110907 Termination date: 20120322 |