CN102262339A - Projection device and shading sheet thereof - Google Patents
Projection device and shading sheet thereof Download PDFInfo
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- CN102262339A CN102262339A CN2010101948516A CN201010194851A CN102262339A CN 102262339 A CN102262339 A CN 102262339A CN 2010101948516 A CN2010101948516 A CN 2010101948516A CN 201010194851 A CN201010194851 A CN 201010194851A CN 102262339 A CN102262339 A CN 102262339A
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- light
- actuator
- dazzling screen
- state
- projection arrangement
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Abstract
The invention discloses a projection device, comprising a light source, a light valve, a lens, a shading module and a controller. The light source is used for providing an illumination beam. The light vale is positioned on a transmission path of the illumination beam and used for converting the illumination beam into an image beam. The light valve is switched between a first state and a second state. The lens is positioned on a transmission path of the image beam and used for forming a projection beam from the image beam and projecting the projection beam along a light emitting path. The controller is electrically connected with the shading module. When the light valve is switched to the first state, the controller drives the shading module to completely shade all beams projected by the lens along the light emitting path. When the light valve is switched to the second state, the controller drives the shading module not to shade all beams projected by the lens along the light emitting path. A method for controlling the shading sheet is also provided.
Description
[technical field]
The invention relates to a kind of projection arrangement, and particularly relevant for a kind of control method with projection arrangement and anti-dazzling screen thereof of shading module.
[background technology]
Existing projection arrangement is controlled the light quantity that enters the light beam of camera lens from light valve by the aperture module that is arranged between light valve and the camera lens mostly, and then reaches the effect of adjusting the contrast of image light and shade.The patent relevant with the aperture module has TaiWan, China patent of invention I290260 and I256518.
In addition, TaiWan, China patent I251112, I272010 and U.S. Pat 7070284 disclosed shading modules though it has the function of shading, so only can reach the effect of part shading on its structure.
In view of the above, under the situation that is not related to the black out source, above-mentioned preceding case still has segment beam to project outside the projection arrangement via camera lens, thereby the picture that can't be produced on screen reaches complete black effect.
[summary of the invention]
The present invention proposes a kind of projection arrangement, in order to interdict all light beams that project from its camera lens fully.
The present invention proposes a kind of control method of anti-dazzling screen, in order to interdict all light beams that camera lens projected from projection arrangement fully.
Other purposes of the present invention and advantage can be further understood from the disclosed technical characterictic of the present invention.
For reaching one of above-mentioned or partly or all purposes or other purposes, one of the present invention embodiment provides a kind of projection arrangement, and it comprises a light source, a light valve, a camera lens, a shading module and a controller.Light source is in order to provide an illuminating bundle.The light valve position is on the bang path of illuminating bundle, and in order to illuminating bundle being converted to an image strip, and light valve switches between one first state and one second state.The camera lens position in order to image strip being formed a projected light beam, and goes out light path along one and projects projected light beam on the bang path of image strip.Controller is electrically connected the shading module.When light valve switched to first state, controller drives shading module interdicted camera lens fully along going out all light beams that light path projects.When light valve switched to second state, controller drives shading module did not interdict camera lens along going out all light beams that light path projects.
For reaching one of above-mentioned or partly or all purposes or other purposes, one of the present invention embodiment provides a kind of control method of anti-dazzling screen, is applicable to a projection arrangement.Projection arrangement comprises a light source, a light valve, a camera lens, an anti-dazzling screen and an actuator.Light source is in order to provide an illuminating bundle.Light valve is arranged on the bang path of illuminating bundle, in order to illuminating bundle is converted to an image strip.Camera lens is arranged on the bang path of image strip, in order to image strip being formed a projected light beam, and goes out light path along one and projects projected light beam.Anti-dazzling screen is connected to actuator.Control method comprises that when light valve switched to one first state, driving actuator moved anti-dazzling screen and is positioned on the light path, in order to interdict camera lens fully along going out all light beams that light path projects.
Based on above-mentioned, under the situation that is not related to the black out source, the picture that projection arrangement is produced on screen has complete black effect.
For above-mentioned feature and advantage of the present invention can be become apparent, a plurality of embodiment cited below particularly, and cooperate appended graphicly, be described in detail below.
[description of drawings]
Fig. 1 is the calcspar of a kind of projection arrangement of one embodiment of the invention.
Fig. 2 is the partial schematic diagram of the projection arrangement of Fig. 1.
Fig. 3 is the synoptic diagram of the projection arrangement of Fig. 2 in another state.
Fig. 4 is the calcspar of the projection arrangement of Fig. 3.
Fig. 5 is the process flow diagram according to the control method of a kind of anti-dazzling screen of one embodiment of the invention.
100: projection arrangement
110: light source
120: light valve
130: camera lens
140: the shading module
142: actuator
142a: transmission shaft
144: anti-dazzling screen
144a: blocking portion
144b: stopper section
146: the initial point sensor
150: controller
L1: illuminating bundle
L2: image strip
L3: projected light beam
L4, L5, L4 ', L5 ': parasitic light
P1: go out light path
S511, S512, S521, S522: step
[embodiment]
About aforementioned and other technology contents, characteristics and effect of the present invention, in the following detailed description that cooperates with reference to graphic a plurality of embodiment, can clearly present.The direction term of being mentioned in following examples, for example " on ", D score, " preceding ", " back ", " left side ", " right side " etc., only be direction with reference to annexed drawings.Therefore, the direction term of use is to be used for explanation, but not is used for limiting the present invention.
Fig. 1 is the calcspar of a kind of projection arrangement of one embodiment of the invention.Fig. 2 is the partial schematic diagram of the projection arrangement of Fig. 1.Please also refer to Fig. 1 and Fig. 2, in the present embodiment, projection arrangement 100 comprises a light source 110, a light valve 120, a camera lens 130, a shading module 140 and a controller 150.Light source 110 is in order to provide an illuminating bundle L1.120 of light valves are on the bang path of illuminating bundle L1, in order to illuminating bundle L1 is converted to an image strip L2.130 on camera lens in order to image strip L2 being formed a projected light beam L3, and projects projected light beam L3 outside the projection arrangement 100 along a bright dipping path P 1 on the bang path of image strip L2, and then goes up at a screen (not illustrating) and to form picture.
In the present embodiment, light valve 120 for example be the numerical digit micro-mirror element (digital micro-mirrordevice, DMD).Yet in other embodiments, light valve can also be liquid crystal panel (LCD panel) or silica-based liquid crystal panel (liquid-crystal-on-silicon panel, LCOS panel).
Fig. 3 is the synoptic diagram of the projection arrangement of Fig. 2 in another state.Fig. 4 is the calcspar of the projection arrangement of Fig. 3.Please also refer to Fig. 1 to Fig. 4, in the present embodiment, light valve 120 can switch between first state and second state, and controller 150 is electrically connected shading module 140.When light valve 120 switched to first state, as shown in Figure 4, light valve 120 did not provide image strip to camera lens, so light valve 120 can not changed the illuminating bundle L1 from light source 110.
Only this moment, camera lens 130 still can receive via light valve 120 partial reflections or the parasitic light L4 that scatters, or from the parasitic light L5 of light source 110.Project projection arrangement 100 for fear of these parasitic lights L4 ', L5 ' from camera lens 130, receiving after light valve 120 switches to the signal of first state, controller 150 just can illustrate as Fig. 3, drive shading module 140 and interdict parasitic light L4 ' and L5 ' fully, project projection arrangement 100 along bright dipping path P 1 to avoid parasitic light L4 ' and L5 '.
Refer again to Fig. 1 and Fig. 2, on the contrary, when light valve 120 switches to second state, as shown in Figure 1, being in provides image strip can will convert image strip L2 to from the illuminating bundle L1 of light source 110 to the light valve 120 of camera lens, and image strip L2 is throwed towards camera lens 130.Controller 150 just can drive shading module 140 and not interdict the projected light beam L3 that camera lens 130 is projected along bright dipping path P 1 this moment.
In view of the above, by relatively arrange in pairs or groups light valve 120 under different conditions of shading module 140, under the situation that is not related to black out source 110, projection arrangement 100 just can be controlled the action that shading module 140 is finished shading, so that the picture that projection arrangement 100 is produced on screen reaches complete black effect.
Refer again to Fig. 2 and Fig. 3, in the present embodiment, shading module 140 also comprises an actuator 142 and an anti-dazzling screen 144.Actuator 142 is electrically connected to controller 150 (being illustrated in Fig. 1 or Fig. 4).Anti-dazzling screen 144 is connected to actuator 142.In the present embodiment, actuator 142 is a step motor, and anti-dazzling screen 144 locks on a transmission shaft 142a of actuator 142.The thought present embodiment is the kind of limiting actuator 142 not, and in the embodiment that other do not illustrate, actuator 142 also can be the motor of types such as servo motor or inductive coil motor.
In addition, anti-dazzling screen 144 has a 144a of blocking portion, when light valve 120 is in first state as Fig. 4 illustrated, actuator 142 illustrates mobile anti-dazzling screen 144 as Fig. 3, so that the 144a of blocking portion can be barred from the bright dipping path P 1 fully, and then reach the effect that blocking comprises all light beams that parasitic light L4 ', L5 ' can project by projection lens 130.When light valve 120 illustrates when being in second state as Fig. 1, actuator 142 can illustrate mobile anti-dazzling screen 144 as Fig. 2, so that the 144a of blocking portion is away from bright dipping path P 1.Thus, projected light beam L3 just is able to along bright dipping path P 1 from camera lens 130 and projects outside the projection arrangement 100.
On the other hand, shading module 140 more can comprise an initial point sensor 146, and it is electrically connected on actuator 142.Moreover anti-dazzling screen 144 also has a stopper section 144b, and initial point sensor 146 is arranged on the mobile route of stopper section 144b.When initial point sensor 146 sensed stopper section 144b, actuator 142 just stopped mobile anti-dazzling screen 144.This measure allows shading module 140 can finish the action of making zero by this when starting, thereby has the effect of initialization shading module 140.In the present embodiment, initial point sensor 146 for example is an optical sensor, and it senses the existence of anti-dazzling screen 144 by stopper section 144b shelters from the light sensing of initial point sensor 146, and initial point sensor 146 can be the magnetic sensor in addition.Only present embodiment is not limited this.
Fig. 5 is the process flow diagram according to the control method of a kind of anti-dazzling screen of one embodiment of the invention.Please also refer to Fig. 2, Fig. 3 and Fig. 5, the control method of anti-dazzling screen 144 is used for projection arrangement 100, and wherein the associated components of projection arrangement 100 illustrates in the foregoing description, just repeats no more at this.In the present embodiment, control method comprises the steps.In step S511, when light valve 120 switches to first state, in step S512, move anti-dazzling screen 144 by controller 150 driving actuator 142 and be positioned on the bright dipping path P 1 again, in order to interdict all light that camera lens 130 is projected along bright dipping path P 1.Moreover, in step S521, when light valve 120 switches to second state, in step S522, move anti-dazzling screen 144 by controller 150 driving actuator 142 and be not positioned on the bright dipping path P 1, again so that projected light beam L3 projects projection arrangement 100 from camera lens 130.
In sum, in the projection arrangement of the above embodiment of the present invention, when light valve switches to first state, all light beams that the blocking of shading module projects along going out light path from camera lens.Therefore, under the situation that is not related to the black out source, the picture that projection arrangement is produced on screen has complete black effect.
The above person of thought, only for the present invention's preferred embodiment, when the scope that can not limit the invention process with this, promptly the simple equivalent of being done according to the present patent application claim and invention description content generally changes and modifies, and all still belongs in the scope that patent of the present invention contains.In addition, arbitrary embodiment of the present invention or claim must not reached whole purposes or advantage or the characteristics that the present invention discloses.
Claims (10)
1. projection arrangement comprises:
One light source is in order to provide an illuminating bundle;
One light valve, position are on the bang path of this illuminating bundle, and in order to converting this illuminating bundle to an image strip, and this light valve switches between one first state and one second state;
One camera lens, position in order to this image strip is formed a projected light beam, and go out light path along one and project this projected light beam on the bang path of this image strip;
One shading module; And
One controller, be electrically connected this shading module, wherein when this light valve switches to this first state, this shading module of this controller drives interdicts this camera lens and goes out the light beam that light path projects along this, and when this light valve switched to this second state, this shading module of this controller drives did not interdict this camera lens and goes out the light beam that light path projects along this.
2. projection arrangement as claimed in claim 1 is characterized in that: this shading module comprises:
One actuator is electrically connected this controller; And
One anti-dazzling screen, connect this actuator, and has a blocking portion, wherein when this light valve switches to this first state, this actuator of this controller drives moves this anti-dazzling screen, goes out on the light path so that should blocking portion be positioned at this, and when this light valve switches to this second state, this actuator of this controller drives moves this anti-dazzling screen, does not go out on the light path so that should blocking portion be positioned at this.
3. projection arrangement as claimed in claim 2 is characterized in that: this actuator is a motor.
4. projection arrangement as claimed in claim 3 is characterized in that: this motor is a step motor.
5. projection arrangement as claimed in claim 2 is characterized in that: this shading module more comprises:
One initial point sensor be electrically connected this actuator, and this anti-dazzling screen also has a stopper section, and wherein this initial point sensor is arranged on the mobile route of this stopper section, and when this initial point sensor sensed this stopper section, this actuator stopped to move this anti-dazzling screen.
6. the control method of an anti-dazzling screen, be used for a projection arrangement, this projection arrangement comprises a light source, a light valve, a camera lens, an anti-dazzling screen and an actuator, this light source is in order to provide an illuminating bundle, this light valve is arranged on the bang path of this illuminating bundle, in order to convert this illuminating bundle to an image strip, this camera lens is arranged on the bang path of this image strip, in order to this image strip is formed a projected light beam, and go out light path along one and project this projected light beam, this anti-dazzling screen connects this actuator, and this control method comprises:
When this light valve switches to one first state, drive this actuator and move this anti-dazzling screen and be positioned at this and go out on the light path, go out the light beam that light path projects in order to interdict this camera lens along this.
7. control method as claimed in claim 6 is characterized in that: driving in the step of this actuator is to drive this actuator by a controller.
8. control method as claimed in claim 6 is characterized in that: more comprise:
When this light valve switches to one second state, drive this actuator and move this anti-dazzling screen and be not positioned at this and go out on the light path, so that going out light path along this, this camera lens projects this projected light beam.
9. control method as claimed in claim 8 is characterized in that: the step that drives this actuator is to drive this actuator by a controller.
10. control method as claimed in claim 6 is characterized in that: this actuator is a motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101948516A CN102262339A (en) | 2010-05-31 | 2010-05-31 | Projection device and shading sheet thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101948516A CN102262339A (en) | 2010-05-31 | 2010-05-31 | Projection device and shading sheet thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102262339A true CN102262339A (en) | 2011-11-30 |
Family
ID=45009023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101948516A Pending CN102262339A (en) | 2010-05-31 | 2010-05-31 | Projection device and shading sheet thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102262339A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110574083A (en) * | 2017-04-26 | 2019-12-13 | 报知希株式会社 | Equipped with display light emitter |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001249402A (en) * | 2000-03-06 | 2001-09-14 | Hitachi Ltd | Display device and display system using the same |
| TWI251112B (en) * | 2004-11-24 | 2006-03-11 | Prodisc Technology Inc | Projection lens assembly and swing device thereof |
| JP2006113255A (en) * | 2004-10-14 | 2006-04-27 | Nec Viewtechnology Ltd | Optical system for projector device and projector device |
| TWI256518B (en) * | 2004-07-30 | 2006-06-11 | Young Optics Inc | Projector display and aperture-controllable diaphragm therein |
| US7070284B2 (en) * | 2003-06-19 | 2006-07-04 | Marantz Japan, Inc. | Projector apparatus |
| JP2006208454A (en) * | 2005-01-25 | 2006-08-10 | Plus Vision Corp | Projector |
| TWI272010B (en) * | 2005-01-21 | 2007-01-21 | Benq Corp | Projector having light-shielding module and image processing method thereof |
| US7234821B2 (en) * | 2004-10-12 | 2007-06-26 | Coretronic Corporation | Projection device having single light valve |
| TWI290260B (en) * | 2005-12-26 | 2007-11-21 | Benq Corp | Projector using a motor for driving an iris installed between a light source and a digital micro-mirror device |
| JP2009075305A (en) * | 2007-09-20 | 2009-04-09 | Seiko Epson Corp | Projector and control method |
-
2010
- 2010-05-31 CN CN2010101948516A patent/CN102262339A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001249402A (en) * | 2000-03-06 | 2001-09-14 | Hitachi Ltd | Display device and display system using the same |
| US7070284B2 (en) * | 2003-06-19 | 2006-07-04 | Marantz Japan, Inc. | Projector apparatus |
| TWI256518B (en) * | 2004-07-30 | 2006-06-11 | Young Optics Inc | Projector display and aperture-controllable diaphragm therein |
| US7234821B2 (en) * | 2004-10-12 | 2007-06-26 | Coretronic Corporation | Projection device having single light valve |
| JP2006113255A (en) * | 2004-10-14 | 2006-04-27 | Nec Viewtechnology Ltd | Optical system for projector device and projector device |
| TWI251112B (en) * | 2004-11-24 | 2006-03-11 | Prodisc Technology Inc | Projection lens assembly and swing device thereof |
| TWI272010B (en) * | 2005-01-21 | 2007-01-21 | Benq Corp | Projector having light-shielding module and image processing method thereof |
| JP2006208454A (en) * | 2005-01-25 | 2006-08-10 | Plus Vision Corp | Projector |
| TWI290260B (en) * | 2005-12-26 | 2007-11-21 | Benq Corp | Projector using a motor for driving an iris installed between a light source and a digital micro-mirror device |
| JP2009075305A (en) * | 2007-09-20 | 2009-04-09 | Seiko Epson Corp | Projector and control method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110574083A (en) * | 2017-04-26 | 2019-12-13 | 报知希株式会社 | Equipped with display light emitter |
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| PB01 | Publication | ||
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Application publication date: 20111130 |