CN100367106C - Projector shading apparatus and projector having the apparatus - Google Patents
Projector shading apparatus and projector having the apparatus Download PDFInfo
- Publication number
- CN100367106C CN100367106C CNB031054250A CN03105425A CN100367106C CN 100367106 C CN100367106 C CN 100367106C CN B031054250 A CNB031054250 A CN B031054250A CN 03105425 A CN03105425 A CN 03105425A CN 100367106 C CN100367106 C CN 100367106C
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- Prior art keywords
- dazzling screen
- projector
- shade
- projected light
- dazzling
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Abstract
The present invention provides a shading device for projecting cameras, which comprises a shading sheet having at least one through part. As the shading sheet is arranged in a projecting light path in a projecting camera, the projection of a projecting camera can be shaded in order to stop much of projecting light, and less projecting light can also emit out through the through part of the shading sheet.
Description
Technical field
The present invention relates to a kind of projector shade, particularly relate to a kind of projector's shade with shadowed layer function.
Background technology
Generally when using projector, can cooperate blank to explain mostly, when using blank, must be with projector's shading (B1ank), in order to avoid influencing blank, projected light shows, " shading " though by name, but with digital projector, its shading mode is by light engine projected light " to be turned to " to depart from projecting direction, normally reflexes to the loam cake or the lower cover of light engine, projected light can not projected by camera lens, yet, since projection lens hide fully black, cause the operator can't correctly judge projector whether be in open state and repeat the start, cause operational inconvenience, cause projector's fault simultaneously easily.
Summary of the invention
The whence is, because the shortcoming of known technology, fundamental purpose of the present invention is to provide a kind of projector shade, but this projector's shade shadowed layer, neither influence the place ahead blank and use, be convenient to the operator simultaneously and differentiate projector and whether be in normal actuator state person.
In order to realize above-mentioned purpose of the present invention, the invention provides a kind of projector shade, it comprises: an anti-dazzling screen, be arranged in the projecting light path of projector, this anti-dazzling screen has at least one hollow part; In projecting light path, cover most projected light by this anti-dazzling screen, and little part projected light still can see through the hollow part ejaculation of this anti-dazzling screen.
The present invention also provides a kind of projector, and it comprises: a shade, have an anti-dazzling screen, and be arranged in the projecting light path of projector; Wherein this anti-dazzling screen has a hollow part, projecting light path can be covered blocking most projected light by this anti-dazzling screen, and little part projected light still can penetrate by the hollow part of this anti-dazzling screen.
Description of drawings
Fig. 1 is the inner structure synoptic diagram of known digital projector.
Fig. 2 is the light path synoptic diagram of known digital projector.
Fig. 3 cooperates the synoptic diagram of projector lens for the present invention.
Fig. 4 is the synoptic diagram of shading state of the present invention.
Fig. 5 preferred embodiment figure that to be anti-dazzling screen of the present invention combine with the projector housing.
Fig. 6 another preferred embodiment figure that to be anti-dazzling screen of the present invention combine with the projector housing.
Fig. 7 is the structural representation of anti-dazzling screen module of the present invention.
Fig. 8 A and Fig. 8 B are the action synoptic diagram of another preferred embodiment of shade of the present invention.
The drawing reference numeral explanation:
10-projector
The 11-housing
The 111-chute
The 112-axle that is pivoted
The 12-light source
The 13-light engine
The 14-digital micro-mirror device
The 15-camera lens
The effective projection in zone of 151-
The 16-control circuit
The 17-heat abstractor
20,120,220-anti-dazzling screen
21,121,221-hollow part
30 blanks
The 31-dark space
The 32-clear zone
320-anti-dazzling screen module
The 321-anti-dazzling screen
The 3211-hollow part
The 3212-tooth bar
The 3213-protuberance
The 322-gauge tap
Embodiment
For making feature of the present invention, purpose and function there are further cognitive and understanding, describe embodiments of the invention in detail below in conjunction with accompanying drawing.
Please consult Fig. 1 and Fig. 2 earlier, with the implementation example of numeric type projector 10 as action principle of the present invention, this projector 10 has a housing 11, its inside mainly is provided with light source 12, digital micro-mirror device (DMD, Digital Micro-mirror Device) 14, light engine 13, camera lens 15, control circuit 16, heat abstractor 17 members such as grade, after projected light is sent by light source 12, via doing reflection control on the digital micro-mirror device 14, penetrate with camera lens 15 by light engine 13 again and be projected on blank or the projection screen, form continuous projection path A, B, C, D, characteristic by this projection path, a kind of projector provided by the present invention shade, its action principle promptly is projection path A, B, C, the shade that one most projected light capable of blocking is set in the arbitrary projection path of D and little part projected light is appeared, the enforcement state of this shade has multiple, as shown in Figure 3, before this anti-dazzling screen 20 can be arranged on camera lens 15, and the size of anti-dazzling screen 20 can cover this camera lens 15 fully, in the effective projection in zone 151 that corresponds to camera lens 15 of this anti-dazzling screen 20, has a hollow part 21, in the present embodiment, this hollow part 21 is the lower right corner that are arranged at this effective projection in zone 151, certainly, also can be arranged at the lower left corner or other position of effective projection in zone 151, its quantity is not also limit one, but be accustomed to according to general operation, this hollow part 21 is arranged on the lower right corner of effective projection in zone 151, and its number is advisable with one, in addition, when projector 10 is in the shading state, can drive heat abstractor 17 simultaneously to strengthen heat radiation.
Consult Fig. 4 again, projector 10 is placed on the suitable distance in blank 30 the place aheads, before being shielded in camera lens 15 by this anti-dazzling screen 20, most projected light capable of blocking, and little part projected light still can penetrate by the hollow part 21 of this anti-dazzling screen 20, therefore, blank 30 most zones are shown as dark space 31 (oblique line partly), only the lower left corner (mirror is in the lower right corner of effective projection in zone 151) in blank is clear zone 32, by the demonstration in this clear zone 32, help the operator and judge whether projector 10 is in open state.
Have multiplely about the mode of operation of the combination of this anti-dazzling screen 20 and projector 10 and anti-dazzling screen 20, only enumerate several preferred embodiment explanations.
At first, see also Fig. 5, this anti-dazzling screen 120 is flat single sheet, in this anti-dazzling screen 120, be provided with hollow part 121, this anti-dazzling screen 120 is embedded in the chute 111 of projector's 10 housings 11, this anti-dazzling screen 120 can slide at chute 111, make anti-dazzling screen 120 coverings or discharge this camera lens 15, before anti-dazzling screen 120 covers camera lens 15, the most projected light that goes out via camera lens 15 projections capable of blocking, and the projected light of little part still can be penetrated by hollow part 121, therefore can form the effect of projection on blank 30 as shown in Figure 4, and drive the mode that this anti-dazzling screen 120 slides, can manually or in projector 10 remote control circuit be set controls with telepilot, smooth and easy for what strengthen that anti-dazzling screen 120 slides, can in chute 111, be equipped with bearing or gear, this dies and will not describe in detail for known technology.
Embodiment as shown in Figure 6 in addition, this anti-dazzling screen 220 also is flat single sheet, in this anti-dazzling screen 220, be provided with hollow part 221, this anti-dazzling screen 220 is hubbed at the axle 112 that is pivoted on projector's 10 housings 11, make this anti-dazzling screen 220 axle 112 that can be pivoted overturn for the center, make anti-dazzling screen 220 coverings or discharge this camera lens 15, before anti-dazzling screen 220 is covered in camera lens 15, the most projected light that goes out via camera lens 15 projections capable of blocking, and the projected light of little part still can be penetrated by hollow part 221, therefore can form the effect of projection on blank 30 as shown in Figure 4, this anti-dazzling screen 220 can be by manually or in projector 10 remote control circuit is set and controls its upset with telepilot.
See also the synoptic diagram of another preferred embodiment of the present invention of Fig. 7, it is in housing 11 inside of projector 10 an anti-dazzling screen module 320 to be set, this anti-dazzling screen module 320 mainly comprises anti-dazzling screen 321, gauge tap 322, control module 323, detect and open unit 324 and detect closed cell 325, this anti-dazzling screen 321 cooperates gearing 326 to drive anti-dazzling screen 321 can cover or discharge this camera lens 15, this anti-dazzling screen 321, gauge tap 322, detect and open unit 324, detect closed cell 325, gearing 326 all couples with control module 323, makes control module 323 actions by opening the connection of gauge tap 322 controllable power.
Aforementioned this gearing 326 comprises: two guide bars 3261 that are parallel to each other, 3262, this guide bar 3261, the 3262nd, be positioned in the housing 11 and be divided into this camera lens 15 both sides by fixed leg 3263, be provided with a gear 3264 in anti-dazzling screen 321 1 sides, the lateral margin that corresponds to gear 3264 at anti-dazzling screen 321 is provided with tooth bar 3212, when gear 3264 clockwise or when rotating counterclockwise, can drive anti-dazzling screen 321 at guide bar 3261 by tooth bar 3212, do on 3262 and guide bar 3261,3262 homoaxial moving back and forth, make anti-dazzling screen 321 coverings or discharge this camera lens 15, similarly, in the effective projection in zone 151 with respect to camera lens 15 of this anti-dazzling screen 321, be provided with a hollow part 3211.
In addition, be provided with a protuberance 3213 at this anti-dazzling screen 321 towards detecting the appropriate location of opening unit 324 and detecting closed cell 325 1 sides, when anti-dazzling screen 321 does not cover camera lens 15, that is anti-dazzling screen 321 is when being positioned at camera lens 15 tops, this protuberance 3213 can contact to detect opens unit 324, make detection unlatching unit 324 detect anti-dazzling screen 321 and arrived at the open site, and export one according to this and open stop signal to control module 323, stopped operating by control module 323 control gears 3264, anti-dazzling screen 321 also stops to move; And when anti-dazzling screen 321 is fallen and covered camera lens 15, this protuberance 3213 can contact at and detect closed cell 325, make detection closed cell 325 detect anti-dazzling screen 321 and arrived at make-position, and export a closed stop signal according to this to control module 323, stopped operating by control module 323 control gears 3264, anti-dazzling screen 321 also stops to move; In brief, present embodiment be with anti-dazzling screen 321 be provided with can with gear 3264 pinion racks 3212, driving anti-dazzling screen 321 by gear 3264 moves to cover or release camera lens 15, before anti-dazzling screen 321 is covered in camera lens 15, the most projected light that goes out via camera lens 15 projections capable of blocking, and the projected light of little part still can be penetrated by hollow part 3211, therefore can form the effect of projection on blank 30 as shown in Figure 4, this anti-dazzling screen module 320 can comprise that also remote control circuit controls with telepilot so that the operator to be provided.
See also Fig. 8 A and Fig. 8 B, this embodiment is provided with one just like the shade 420 as the window shutter, it is that a plurality of anti-dazzling screens 421 are serially connected on the stationary shaft 422, may command anti-dazzling screen 421 is that the axle center is turned over synchronously and lifted with this stationary shaft 422, and the difference by anti-dazzling screen 421 flip angles is with the space that projected light L is provided penetrates or change projected light L projecting direction; Shown in Fig. 8 A, when projected light L level penetrates, adjustable anti-dazzling screen 421 turns over synchronously and is the level of state, projected light L can be gone out by projection between the anti-dazzling screen 421, and when control anti-dazzling screen 421 turns over a suitable angle synchronously, projected light L can change direction because of the obstruct of anti-dazzling screen 421, when anti-dazzling screen 421 has highly reflective, projected light L can be reflexed to other angle fully, when the reflectivity of anti-dazzling screen 421 is hanged down, partly projected light L can be subdued, only reflection part projected light L, in any case, the focusing on of present embodiment controlled anti-dazzling screen 421 angles of shade 420 to change the projecting direction of projected light L, generally speaking, when projector carried out projection, the projecting direction of its projected light L was a level or a little more than horizontal direction, and control projected light L direction makes the direction of the projection screen that departs from its projection to be advisable downwards, certainly, may command anti-dazzling screen 421 other angles of upset make projected light L be partial to other direction, and are so comparatively suitable with the deflection below; Thus, after projected light L changes projecting direction, still can be projected in the below of blank or projection screen, help the operator and judge that projector still is in open state, the hollow part (not shown) of suitable size or quantity also can be set on anti-dazzling screen 421, make little part projected light can by hollow part penetrate and projection on blank or projection screen, constitute the effect of projection on blank 30 as shown in Figure 4, this shade 420 can be by manually or in projector 10 being provided with remote control circuit is controlled its anti-dazzling screen 421 with telepilot upset.
In sum, the present invention is provided with shade in projection path, and it can interdict most projected light and little part projected light is appeared, or changes the practice of projected light direction, can make the operator of projector be easy to judge the open state of projector; It is not only applicable to digital projector, be applicable to the projector of other type simultaneously, with the digital projector is explanation, it only is preferred embodiment of the present invention, and can not limit the scope of the invention with this, promptly the equalization of doing according to the scope of claim of the present invention changes and modifies, still within the scope of claim of the present invention, the modification of being made under the premise without departing from the spirit and scope of the present invention all should be considered as further enforcement situation of the present invention.
Claims (19)
1. projector's shade, it comprises:
One anti-dazzling screen is arranged in the projecting light path of projector, and this anti-dazzling screen has at least one hollow part;
In projecting light path, cover most projected light by this anti-dazzling screen, and little part projected light still can see through the hollow part ejaculation of this anti-dazzling screen.
2. projector as claimed in claim 1 shade, wherein, the hollow part of this anti-dazzling screen is positioned at the bottom of effective projection in zone.
3. projector as claimed in claim 2 shade, wherein, the hollow part of this anti-dazzling screen is positioned at the lower left corner or the lower right corner of effective projection in zone.
4. projector as claimed in claim 1 shade, wherein, this anti-dazzling screen work is located in the projecting light path, can adjust the anti-dazzling screen position by manual or drive unit and make anti-dazzling screen be covered in projecting light path.
5. projector as claimed in claim 4 shade, wherein, this anti-dazzling screen is hubbed on projector's housing, and the axle that can be pivoted is center this anti-dazzling screen that overturns, and makes covering or discharges this projected light.
6. projector as claimed in claim 4 shade, wherein, this anti-dazzling screen is arranged in projector's housing and can back and forth slides, and makes covering or discharges this projected light.
7. projector as claimed in claim 4 shade, wherein, this drive unit is that telepilot cooperates remote control circuit to drive.
8. projector as claimed in claim 1 shade, wherein, this shade is an anti-dazzling screen module, this anti-dazzling screen module mainly comprises:
Anti-dazzling screen is disposed at projector in a movable manner, and it has at least one hollow part;
One gauge tap;
One detects the unlatching unit, in order to detect the open site of anti-dazzling screen;
One detects closed cell, in order to detect the make-position of anti-dazzling screen;
Gearing moves in order to drive anti-dazzling screen;
Can control the gearing action by gauge tap moves to drive anti-dazzling screen, when anti-dazzling screen touched detection unlatching unit, unit is opened in this detection can make gearing stop transmission, makes anti-dazzling screen stop to move, anti-dazzling screen can discharge projected light, and projected light is projected to outside the projector; When anti-dazzling screen touched the detection closed cell, this detection closed cell can make gearing stop transmission, makes anti-dazzling screen stop to move, anti-dazzling screen most projected light capable of blocking, and little part projected light can be appeared by the hollow part of anti-dazzling screen.
9. projector as claimed in claim 8 shade, wherein, this anti-dazzling screen module comprises a control module, this anti-dazzling screen, gauge tap, detection unlatching unit, detection closed cell, gearing all couple with control module, and this control module is opened signal, closed signal in order to receive, opened stop signal, closed stop signal.
10. projector as claimed in claim 8 shade, wherein, this gearing comprises a gear and the tooth bar that is arranged at the anti-dazzling screen corresponding section, is meshing with each other by rack and pinion, can drive shadow shield and move when gear rotates.
11. projector as claimed in claim 8 shade, wherein, this gearing comprises a guidance device, can drive anti-dazzling screen shift reciprocately on guidance device by gearing, makes to cover or the release projected light.
12. projector as claimed in claim 11 shade, wherein, this guidance device is two mutual parallel guide bars.
13. projector as claimed in claim 8 shade, wherein, this anti-dazzling screen has a protuberance, opens the unit or detect closed cell by this protuberance and detection to contact.
14. projector as claimed in claim 8 shade, wherein, this anti-dazzling screen module also can comprise a remote control circuit, drives so that remote control mode to be provided.
15. projector as claimed in claim 1 shade, wherein, this shade is serially connected with a plurality of anti-dazzling screens on one stationary shaft, these a plurality of anti-dazzling screens suitable angle of can overturning synchronously; Thus, shade is arranged in the light path, makes the offset projection light direction by upset anti-dazzling screen angle.
16. projector as claimed in claim 15 shade, wherein, this anti-dazzling screen can be adjusted the anti-dazzling screen flip angle by manual or drive unit.
17. projector as claimed in claim 16 shade, wherein, this drive unit is that telepilot cooperates remote control circuit to drive.
18. a projector, it comprises:
One shade has an anti-dazzling screen, is arranged in the projecting light path of projector;
Wherein this anti-dazzling screen has a hollow part, projecting light path can be covered blocking most projected light by this anti-dazzling screen, and little part projected light still can penetrate by the hollow part of this anti-dazzling screen.
19. projector as claimed in claim 18, this projector also comprises a heat abstractor, and when anti-dazzling screen covered projected light, this heat abstractor quickened its radiating efficiency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031054250A CN100367106C (en) | 2003-02-20 | 2003-02-20 | Projector shading apparatus and projector having the apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031054250A CN100367106C (en) | 2003-02-20 | 2003-02-20 | Projector shading apparatus and projector having the apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1523440A CN1523440A (en) | 2004-08-25 |
| CN100367106C true CN100367106C (en) | 2008-02-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031054250A Expired - Lifetime CN100367106C (en) | 2003-02-20 | 2003-02-20 | Projector shading apparatus and projector having the apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100367106C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101859054A (en) * | 2009-04-13 | 2010-10-13 | 三洋电机株式会社 | The projection type video display device |
| CN102402108A (en) * | 2010-09-15 | 2012-04-04 | 中强光电股份有限公司 | Light shading module and projection device |
| CN102262340B (en) * | 2011-07-11 | 2013-01-09 | 深圳市华星光电技术有限公司 | Projection device and projection equipment |
| US10481477B2 (en) * | 2016-01-08 | 2019-11-19 | Maxell, Ltd. | Projector apparatus |
| CN108267921A (en) * | 2018-01-22 | 2018-07-10 | 苏州戎维邦信息技术有限公司 | Can remote control projector lens block/open control box |
| CN114851161B (en) * | 2022-07-07 | 2022-09-16 | 季华实验室 | Safety warning system and method of mobile composite robot |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002019029A1 (en) * | 2000-08-30 | 2002-03-07 | Active Light Gmbh | Transparent image projector and image support |
| CN1387083A (en) * | 2001-05-22 | 2002-12-25 | 精工爱普生株式会社 | Projector |
| JP2003005167A (en) * | 2001-06-20 | 2003-01-08 | Nec Viewtechnology Ltd | Projection type liquid crystal display and color image forming method |
-
2003
- 2003-02-20 CN CNB031054250A patent/CN100367106C/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002019029A1 (en) * | 2000-08-30 | 2002-03-07 | Active Light Gmbh | Transparent image projector and image support |
| CN1387083A (en) * | 2001-05-22 | 2002-12-25 | 精工爱普生株式会社 | Projector |
| JP2003005167A (en) * | 2001-06-20 | 2003-01-08 | Nec Viewtechnology Ltd | Projection type liquid crystal display and color image forming method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1523440A (en) | 2004-08-25 |
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Owner name: QISDA TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: BENQ CORPORATION. Effective date: 20100408 |
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Granted publication date: 20080206 |