CN108508684A - A kind of camera lens for short focus projector - Google Patents
A kind of camera lens for short focus projector Download PDFInfo
- Publication number
- CN108508684A CN108508684A CN201810223889.8A CN201810223889A CN108508684A CN 108508684 A CN108508684 A CN 108508684A CN 201810223889 A CN201810223889 A CN 201810223889A CN 108508684 A CN108508684 A CN 108508684A
- Authority
- CN
- China
- Prior art keywords
- focusing
- speculum
- burnt
- pedestal
- rack
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/142—Adjusting of projection optics
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Endoscopes (AREA)
Abstract
The present invention provides a kind of camera lens for short focus projector,Including pedestal,Lens assembly,Speculum,Focusing device and rear burnt focus control,Pedestal is equipped with accommodating chamber,Lens assembly is set in the accommodating chamber,The accommodating chamber front-end and back-end opposite with lens assembly are respectively equipped with preceding light hole and rear light hole,Speculum is set on the rear light hole,Focusing device and rear burnt focus control are respectively arranged on the left and right sides of pedestal,The middle part of speculum is fixed on by two lock screws on pedestal,The downside of speculum is connect by two adjustable screws with the pedestal,The configuration of the present invention is simple and speculum is integrated on pedestal,Reduce the number of components of the adjustment structure of speculum,And then improve assembly precision,And the positioning of speculum uses four point attachment method,Use two-point locating,Remaining two point activity adjusts,To reduce the degree of freedom of speculum,Greatly reduce adjustment difficulty.
Description
【Technical field】
The present invention relates to field of optical equipment, especially a kind of camera lens for short focus projector.
【Background technology】
As projector is more and more extensive in commercial and domestic environments application, requirement of the consumer to projector is also more next
Higher, it is good not require nothing more than picture effect, and requires projected picture size big, while also requiring projector distance short, occupies empty
Between it is small.And as the core component of projector, optical lens, short focus projector lens therein can be such that projector meets
Requirements above.
For short focus projector lens, the adjusting-fixing structure of speculum, the connection structure between speculum and camera lens,
Connection structure between camera lens and projector's illumination part, is very important.And resolution ratio, throwing with market to projection lens
Shadow picture dimension, the requirement of projector distance are higher and higher, and the design requirement of camera lens is also higher and higher, the precision of speculum, camera lens
The precision of other components, it is similarly desirable to increase.But according to current processing technology level, the accuracy guarantee of camera lens component is very
Difficult, the system accuracy so as to cause component accumulation is poor, and can lead to cost height.In addition, projector uses the longevity
Life requires to need for a long time, so as core component, the structural stability of short focus projector lens is also that needs are very high
Requirement.
【Invention content】
The technical problem to be solved in the present invention is to provide simple in structure and certifiable assembling tolerances to reduce camera lens component
A kind of camera lens for short focus projector of cumulative limit.
The object of the present invention is achieved like this：
A kind of camera lens for short focus projector, including pedestal, lens assembly, speculum, focusing device and after
Burnt focus control, the pedestal be equipped with accommodating chamber, the lens assembly be set to the accommodating chamber in, the accommodating chamber with it is described
The opposite front-end and back-end of lens assembly are respectively equipped with preceding light hole and rear light hole, and the speculum is set to the rear light hole
On, the focusing device is respectively arranged on the left and right sides of the pedestal, the middle part of the speculum with rear burnt focus control
Be fixed on the pedestal by two lock screws, the downside of the speculum by two adjustable screw by connect with the pedestal
It connects.
Using the above structure, lens assembly, speculum, focusing device and rear burnt focus control are fully integrated the present invention
It is installed on pedestal, it is simple in structure and ensure that the assembly precision interconnected between them.Moreover, speculum is integrated present
On body, to reduce speculum adjustment structure number of components, and then improve assembly precision, and speculum positioning use
Four point attachment method, with two-point locating (middle part of speculum is fixed on by two lock screws on the pedestal), remaining 2 points work
Dynamic adjustment (downside of speculum by two adjustable screw by connect with the pedestal), to reduce the freedom of speculum
Degree, greatly reduces adjustment difficulty.
A kind of camera lens for short focus projector as described above, the lens assembly both sides are respectively equipped with focusing
Rack and rear burnt rack of focusing, correspondingly, the focusing device include focusing motor and focusing gear with
In driving focusing rack movement, after described burnt focus control include it is rear it is burnt focus motor and it is rear it is burnt focus gear with
Pass through motor and the focusing gear driving focusing of focusing in driving the rear burnt focusing rack movement, focusing device
Rack moves to carry out focusing, and then burnt focus control is focused by burnt after rear burnt focus motor and rear burnt focusing driving
Rack movement is to burnt focusing after progress.
A kind of camera lens for short focus projector as described above, the both sides of the pedestal are equipped with straight slot, described in two
Focusing transmission gear and rear burnt transmission gear of focusing, the focusing transmission gear are rotationally equipped on straight slot respectively
It is meshed simultaneously with the focusing rack and focusing gear by the corresponding straight slot, burnt focusing driving cog after described
Wheel is meshed with the rear burnt focusing rack and the rear burnt gear of focusing simultaneously by the accordingly straight slot, focusing device
Drive the rotation of focusing transmission gear by focus motor and focusing gear to drive focusing rack move into
And focusing is carried out, then burnt focus control passes through burnt focusing driving cog after rear burnt focus motor and rear burnt gear driving of focusing
Wheel rotation is so that burnt focusing rack moves burnt focusing after progress in turn after drive.
A kind of camera lens for short focus projector as described above, be arranged on the adjustable screw adjust spring with
So that speculum can adjust the inclination angle of both sides.
【Description of the drawings】
The specific implementation mode of the present invention is described in further detail below in conjunction with the accompanying drawings, wherein：
Fig. 1 is the decomposition texture schematic diagram of the present invention；
Fig. 2 is the assembling structure schematic diagram of the present invention.
【Specific implementation mode】
A kind of camera lens for short focus projector, including (speculum 3 is using non-for pedestal 1, lens assembly 2, speculum 3
Spherical reflector), focusing device 4 and rear burnt focus control 5, pedestal 1 be equipped with accommodating chamber 11, lens assembly 2, which is set to, to be held
It receives in chamber 11, the front-end and back-end opposite with lens assembly 2 of accommodating chamber 11 are respectively equipped with preceding light hole 12 and rear light hole 13, instead
Mirror 3 is penetrated on rear light hole 13, focusing device 4 is respectively arranged on the left and right sides of pedestal 1 with rear burnt focus control 5, instead
The middle part for penetrating mirror 3 is fixed on by two lock screws 6 on pedestal 1, the downside of speculum 3 by two adjustable screws 7 with seat
Body 1 connects, and adjustment spring 8 is arranged on each adjustable screw 7.
2 both sides of lens assembly are respectively equipped with focusing rack 21 and rear burnt rack 22 of focusing, correspondingly, focusing dress
It includes that focusing motor 41 and focusing gear 42 move for driving focusing rack 21 to set 4, rear burnt focusing dress
It includes that rear burnt motor 51 and the rear burnt gear 52 of focusing of focusing moves for burnt rack 22 of focusing after driving to set 5, the both sides of pedestal 1
It is equipped with straight slot 14, is rotationally equipped with focusing transmission gear 43 and rear burnt driving cog of focusing on two straight slots 14 respectively
Wheel 53, focusing transmission gear 43 are nibbled with focusing rack 21 and 42 phase of focusing gear simultaneously by corresponding straight slot 14
It closes, rear burnt focusing transmission gear 53 is nibbled with rear burnt focusing rack 22 and rear burnt focusing 52 phase of gear simultaneously by corresponding straight slot 14
It closes.
The present invention in use, image pass sequentially through preceding light hole 12, lens assembly 2, rear light hole 13 and speculum 3 and
On projection to screen, focusing driving cog is driven by the focusing motor 41 and focusing gear 42 of focusing device 4
43 rotation of wheel is to drive the movement of focusing rack 21 and then carry out focusing, and then burnt focus control 5 passes through rear burnt tune
Burnt focusing transmission gear 53 rotation is so that burnt focusing rack 22 moves after driving after burnt motor 51 and rear burnt focusing gear 52 drive
And then burnt focusing after carrying out so that image definition project to screen.
Claims (4)
1. a kind of camera lens for short focus projector, it is characterised in that including pedestal (1), lens assembly (2), speculum (3),
Focusing device (4) and rear burnt focus control (5), the pedestal (1) are equipped with accommodating chamber (11), the lens assembly (2)
In the accommodating chamber (11), the accommodating chamber (11) front-end and back-end opposite with the lens assembly (2) are respectively equipped with
Preceding light hole (12) and rear light hole (13), the speculum (3) are set on the rear light hole (13), the focusing dress
It sets (4) and rear burnt focus control (5) is respectively arranged on the left and right sides of the pedestal (1), the middle part of the speculum (3) passes through two
Lock screw (6) is fixed on the pedestal (1), the downside of the speculum (3) by two adjustable screw (7) with it is described
Pedestal (1) connects.
2. a kind of camera lens for short focus projector according to claim 1, it is characterised in that the lens assembly (2)
Both sides are respectively equipped with focusing rack (21) and rear burnt focusing rack (22), and correspondingly, the focusing device (4) includes
Focusing motor (41) and focusing gear (42) are burnt after described for driving focusing rack (21) movement
Focus control (5) includes rear coke focusing motor (51) and rear burnt focusing gear (52) for the driving rear burnt focusing rack
(22) it moves.
3. a kind of camera lens for short focus projector according to claim 2, it is characterised in that the two of the pedestal (1)
Side is equipped with straight slot (14), and focusing transmission gear (43) and rear burnt tune are rotationally equipped with respectively on two straight slots (14)
Burnt transmission gear (53), the focusing transmission gear (43) by the corresponding straight slot (14) and meanwhile with the focusing
Rack (21) and focusing gear (42) are meshed, and burnt focusing transmission gear (53) passes through the corresponding straight slot (14) after described
It is meshed simultaneously with the rear burnt focusing rack (22) and the rear burnt gear (52) of focusing.
4. a kind of camera lens for short focus projector according to any one of claims 1 to 3, it is characterised in that it is described can
Adjustment spring (8) is arranged on adjustment screw (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810223889.8A CN108508684A (en) | 2018-03-19 | 2018-03-19 | A kind of camera lens for short focus projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810223889.8A CN108508684A (en) | 2018-03-19 | 2018-03-19 | A kind of camera lens for short focus projector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108508684A true CN108508684A (en) | 2018-09-07 |
Family
ID=63376697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810223889.8A Pending CN108508684A (en) | 2018-03-19 | 2018-03-19 | A kind of camera lens for short focus projector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108508684A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110543063A (en) * | 2019-06-26 | 2019-12-06 | 广州长步道光电科技有限公司 | Automatic focusing device and automatic focusing lens comprising same |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004094148A (en) * | 2002-09-04 | 2004-03-25 | Canon Inc | Lens system and photographing device provided with the same |
| CN201845119U (en) * | 2010-10-15 | 2011-05-25 | 中山联合光电科技有限公司 | Optical-zoom and auto-focusing adjusting device |
| CN202502341U (en) * | 2012-01-31 | 2012-10-24 | 南靖万利达科技有限公司 | Lens focusing structure of micro projector |
| CN106990662A (en) * | 2017-05-15 | 2017-07-28 | 海信集团有限公司 | A kind of governor motion of projector's mean camber speculum and projector |
| CN107807434A (en) * | 2017-10-25 | 2018-03-16 | 中山联合光电科技股份有限公司 | A kind of adjustable optical lens of lens position and its method for adjusting eyeglass |
| CN208013651U (en) * | 2018-03-19 | 2018-10-26 | 中山联合光电科技股份有限公司 | A kind of short focus projector lens |
-
2018
- 2018-03-19 CN CN201810223889.8A patent/CN108508684A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004094148A (en) * | 2002-09-04 | 2004-03-25 | Canon Inc | Lens system and photographing device provided with the same |
| CN201845119U (en) * | 2010-10-15 | 2011-05-25 | 中山联合光电科技有限公司 | Optical-zoom and auto-focusing adjusting device |
| CN202502341U (en) * | 2012-01-31 | 2012-10-24 | 南靖万利达科技有限公司 | Lens focusing structure of micro projector |
| CN106990662A (en) * | 2017-05-15 | 2017-07-28 | 海信集团有限公司 | A kind of governor motion of projector's mean camber speculum and projector |
| CN107807434A (en) * | 2017-10-25 | 2018-03-16 | 中山联合光电科技股份有限公司 | A kind of adjustable optical lens of lens position and its method for adjusting eyeglass |
| CN208013651U (en) * | 2018-03-19 | 2018-10-26 | 中山联合光电科技股份有限公司 | A kind of short focus projector lens |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110543063A (en) * | 2019-06-26 | 2019-12-06 | 广州长步道光电科技有限公司 | Automatic focusing device and automatic focusing lens comprising same |
| CN110543063B (en) * | 2019-06-26 | 2023-12-01 | 广州长步道光学科技有限公司 | Automatic focusing device and automatic focusing lens comprising same |
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