CN104730821B - Projection arrangement - Google Patents
Projection arrangement Download PDFInfo
- Publication number
- CN104730821B CN104730821B CN201410840652.6A CN201410840652A CN104730821B CN 104730821 B CN104730821 B CN 104730821B CN 201410840652 A CN201410840652 A CN 201410840652A CN 104730821 B CN104730821 B CN 104730821B
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- CN
- China
- Prior art keywords
- colour wheel
- switch
- multisection type
- unit
- control unit
- Prior art date
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Classifications
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- 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
- G03B21/20—Lamp housings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
- F21V9/40—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters with provision for controlling spectral properties, e.g. colour, or intensity
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/007—Optical devices or arrangements for the control of light using movable or deformable optical elements the movable or deformable optical element controlling the colour, i.e. a spectral characteristic, of the light
- G02B26/008—Optical devices or arrangements for the control of light using movable or deformable optical elements the movable or deformable optical element controlling the colour, i.e. a spectral characteristic, of the light in the form of devices for effecting sequential colour changes, e.g. colour wheels
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- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Astronomy & Astrophysics (AREA)
- Optics & Photonics (AREA)
- Projection Apparatus (AREA)
- Mechanical Light Control Or Optical Switches (AREA)
Abstract
The present invention provides a kind of projection arrangement, including: light source, multisection type colour wheel unit, switch and control unit; This light source is used for throw light; This multisection type colour wheel unit, is arranged in the light path of this light, including the first colour wheel and the second colour wheel; This control unit, it is coupled to this light source, this multisection type colour wheel unit and this switch, this control unit switches between primary importance and the second position in order to control this multisection type colour wheel unit, so that the light of this light source projects is optionally projected to this first colour wheel or this second colour wheel; Wherein, this switch is arranged relative to this multisection type colour wheel unit, so that when this control unit control this multisection type colour wheel unit switch between this primary importance and this second position time, this switchs and switches between closure state and off-state, and then by detecting the state of this switch, colour wheel that this control unit determines that this light is projected to is this first colour wheel or this second colour wheel.
Description
Technical field
The present invention relates to projection arrangement field, particularly relate to a kind of can the projection arrangement of the currently used colour wheel of detecting real-time.
Background technology
Two colour wheels non-concurrent that multisection type colour wheel cell projection facility have use, and multisection type colour wheel unit generally comprises inner ring colour wheel and outer ring colour wheel. Existing projection arrangement cannot distinguish the colour wheel being switched at present automatically, and cannot be confirmed whether accurately to have switched colour wheel.
Summary of the invention
The present invention provides a kind of projection arrangement, it is possible to automatically distinguishes the colour wheel of switching at present and is able to confirm that whether accurately have switched colour wheel.
On the one hand, the present invention provides a kind of projection arrangement, including: light source, multisection type colour wheel unit, switch and control unit; This light source, for throw light; This multisection type colour wheel unit, is arranged in the light path of this light, and this multisection type colour wheel unit includes the first colour wheel and the second colour wheel; This control unit, it is coupled to this light source, this multisection type colour wheel unit and this switch, this control unit switches between primary importance and the second position in order to control this multisection type colour wheel unit, so that the light of this light source projects is optionally projected to this first colour wheel or this second colour wheel; Wherein, this switch is arranged relative to this multisection type colour wheel unit, so that when this control unit control this multisection type colour wheel unit switch between this primary importance and this second position time, this switchs and switches between closure state and off-state, and then by detecting the state of this switch, colour wheel that this control unit determines that this light is projected to is this first colour wheel or this second colour wheel.
It is also preferred that the left when this multisection type colour wheel unit and this switch contact, this switch closes; When this multisection type colour wheel unit separates with this switch, this switches off.
It is also preferred that the left this switch is touch switch.
It is also preferred that the left when the distance of this multisection type colour wheel unit and this switch is less than or equal to the first preset value, this switch closes; When the distance of this multisection type colour wheel unit and this switch is more than this first preset value, this switches off.
It is also preferred that the left this switch is proximity switch.
It is also preferred that the left this control unit is additionally operable to the colour wheel and the current application scene that are projected to according to this light, it is determined whether need the position switching this multisection type colour wheel unit to switch the colour wheel that this light is projected to.
It is also preferred that the left this control unit couples the state at this switch place by detecting this control unit detects the state of this switch.
It is also preferred that the left the state that this control unit couples this switch place couples this switch place voltage, resistance or electric current for this control unit.
It is also preferred that the left this first colour wheel is inner ring colour wheel, this second colour wheel is outer ring colour wheel; Or, this first colour wheel is this outer ring colour wheel, and this second colour wheel is this inner ring colour wheel.
Compared with prior art, the switch that projection arrangement provided by the invention includes is arranged relative to multisection type colour wheel unit, and multisection type colour wheel unit when switching between primary importance and the second position, switch and switch in closure state and off-state, and then control unit can be in closure state by detection switch or off-state determines that light is projected to the first colour wheel or second colour wheel of multisection type colour wheel unit, and then can automatically distinguish the colour wheel of switching at present and be able to confirm that whether accurately have switched colour wheel.
Accompanying drawing explanation
The functional block diagram of a kind of projection arrangement that Fig. 1 provides for the embodiment of the present invention;
The structural representation of a kind of projection arrangement that Fig. 2 provides for the embodiment of the present invention;
The schematic diagram of a kind of multisection type colour wheel unit that Fig. 3 provides for the embodiment of the present invention;
The schematic diagram that a kind of multisection type colour wheel unit that Fig. 4 provides for the embodiment of the present invention moves;
The schematic diagram that the another kind of multisection type colour wheel unit that Fig. 5 provides for the embodiment of the present invention moves.
Detailed description of the invention
For making the purpose of the present invention, structure, feature and function thereof are had further understanding, hereby embodiment is coordinated to describe in detail as follows.
As it is shown in figure 1, the functional block diagram of a kind of projection arrangement provided for the embodiment of the present invention. as it is shown in figure 1, projection arrangement 1 includes: light source 11, multisection type colour wheel unit 12, switch 13 and control unit 14. light source 11 is for throw light. multisection type colour wheel unit 12 is arranged in the light path of the light of light source 11 projection, and multisection type colour wheel unit 12 includes the first colour wheel 121 and the second colour wheel 122. control unit 14 is coupled to light source 11, multisection type colour wheel unit 12 and switch 13, control unit 14 switches between primary importance and the second position in order to control multisection type colour wheel unit 12, so that the light of light source 11 projection is optionally projected to the first colour wheel 121 or the second colour wheel 122. switch 13 is arranged relative to multisection type colour wheel unit 12, so that when control unit 14 control multisection type colour wheel unit 12 switched to the second position by primary importance time, switch 13 switches between closure state and off-state, and then control unit 14 can by detect switch 13 state determine that the colour wheel that the light that light source 11 sends is projected to is the first colour wheel 121 or the second colour wheel 122, namely control unit 14 can be in opening or closed mode determines that the colour wheel that the light that light source sends is projected to is the first colour wheel 121 or the second colour wheel 122 by detecting switch 13.Certainly, projection arrangement 1 also includes carrying out projecting necessary element, for instance projection lens, digital micromirror device etc., this is not construed as limiting by the embodiment of the present invention.
As in figure 2 it is shown, the structural representation of a kind of projection arrangement provided for the embodiment of the present invention. Preferably, so that control unit 14 can detect the state of switch, projection arrangement 1 also includes detecting necessary element, power supply 131 as shown in Figure 2, resistance 132, resistance 133, wherein control unit 14 couples first colour wheel the 121, second colour wheel 122, and one end of switch 13 is coupled to control unit 14, and the other end of switch 13 is through resistance 133 ground connection, power supply 131 is coupled to one end of switch 13 through resistance 132, and it is some O that control unit 14 is coupled to the end of switch 13. It is also preferred that the left control unit 14 can couple, by detection control unit 14, the state switching 13 places determines the state of switch 13, namely by the state at test point O place, control unit 14 can determine that switch 13 is closure state or off-state. Concrete, control unit 14 can pass through the difference of the height of test point O place voltage, resistance or electric current, determine that switch state in which is closure state or off-state, and then determine that the colour wheel that the light that light source 11 sends is projected to is the first colour wheel 121 or the second colour wheel 122.
As it is shown on figure 3, the schematic diagram of a kind of multisection type colour wheel unit 12 provided for the embodiment of the present invention. As it is shown on figure 3, multisection type colour wheel unit 12 include in inner ring colour wheel 22 and outer ring colour wheel 21, Fig. 3 for inner ring colour wheel 22 be 3 sections of color colour wheels, outer ring colour wheel 21 be 6 sections of color colour wheels. First colour wheel 121 is inner ring colour wheel 22, and the second colour wheel 122 is outer ring colour wheel 21; Or, the second colour wheel 122 is inner ring colour wheel 22, and the first colour wheel 121 is outer ring colour wheel 21.
It is also preferred that the left switch 13 is touch switch; When multisection type colour wheel unit 12 contacts with switch 13, switch 13 Guan Bi, switch 13 and control unit 14 turn on; When multisection type colour wheel unit 12 separates with switch 13, switch 13 disconnection, switch 13 and control unit 14 are ended.
As shown in Figure 4, for the schematic diagram that a kind of multisection type colour wheel unit 12 of embodiment of the present invention offer moves, wherein, the multisection type colour wheel unit 12 illustrated with solid line represents that multisection type colour wheel unit 12 is in position AA, the multisection type colour wheel unit 12 illustrated with dotted line represents that multisection type colour wheel unit 12 is in position BB, also includes digital micromirror device 15 for projection arrangement 1 and illustrates. As shown in Figure 4, when multisection type colour wheel unit 12 is in position AA, the light 111 that light source 11 sends is projected to outer ring colour wheel 21; When multisection type colour wheel unit 12 is in position BB, the light 111 that light source 11 sends is projected to inner ring colour wheel 22.
The first situation, primary importance is position AA, the second position is position BB, switch 13 is arranged relative to multisection type colour wheel unit 12, so that when multisection type colour wheel unit 12 is switched to the second position by primary importance, light 111 by be projected to outer ring colour wheel 21 switch to be projected to inner ring colour wheel 22, multisection type colour wheel unit 12 13 contact with switch, switch 13 closes; When multisection type colour wheel unit 12 is switched to primary importance by the second position, light 111 by be projected to inner ring colour wheel 22 switch to be projected to outer ring colour wheel 21, multisection type colour wheel unit 12 13 separates with switch, switch 13 disconnection. Control unit 14 can by the state of test point O, it is determined that the state of switch 13, so determine currently be switched to for inner ring colour wheel 22 or outer ring colour wheel 21.Concrete, for the voltage of test point O, when control unit 14 detect a voltage at O place be high voltage time, it is determined that switch 13 disconnection, and then determine that what be switched to is outer ring colour wheel 21; When control unit 14 detect a voltage at O place be low-voltage time, it is determined that switch 13 Guan Bi, so determine be switched to for inner ring colour wheel 22. As shown in Figure 4, for more convenient configuration switch 13, switch 13 can be arranged by multisection type colour wheel unit 12 relatively, when making switch 13 Guan Bi, multisection type colour wheel unit 12 and switch 13 are contacted with on the straight line CC that the central point of primary importance and the second position is constituted and are positioned at the right side of multisection type colour wheel unit 12, for instance N place.
The second situation, primary importance is position BB, the second position is position AA, switch 13 is arranged relative to multisection type colour wheel unit 12, so that when multisection type colour wheel unit 12 is switched to the second position by primary importance, light 111 by be projected to inner ring colour wheel 22 switch to be projected to outer ring colour wheel 21, multisection type colour wheel unit 12 13 contact with switch, switch 13 closes; When multisection type colour wheel unit 12 is switched to primary importance by the second position, light 111 by be projected to outer ring colour wheel 21 switch to be projected to inner ring colour wheel 22, multisection type colour wheel unit 12 13 separates with switch, switch 13 disconnection. Control unit 14 can by the state of test point O, it is determined that the state of switch 13, so determine currently be switched to for inner ring colour wheel 22 or outer ring colour wheel 21. Concrete, for the voltage of test point O, when control unit 14 detect a voltage at O place be low-voltage time, it is determined that switch 13 Guan Bi, and then determine that what be switched to is outer ring colour wheel 21; When control unit 14 detect a voltage at O place be high voltage time, it is determined that switch 13 disconnection, so determine be switched to for inner ring colour wheel 22. As shown in Figure 4, for more convenient configuration switch 13, switch 13 can be arranged by multisection type colour wheel unit 12 relatively, when making switch 13 Guan Bi, multisection type colour wheel unit 12 and switch 13 are contacted with on the straight line CC that the central point of primary importance and the second position is constituted and are positioned at the left side of multisection type colour wheel unit 12, for instance M place.
As shown in Figure 5, for the schematic diagram that the another kind of multisection type colour wheel unit 12 of embodiment of the present invention offer moves, wherein, the multisection type colour wheel unit 12 illustrated with solid line represents that multisection type colour wheel unit 12 is in position AA ', the multisection type colour wheel unit 12 illustrated with dotted line represents that multisection type colour wheel unit 12 is in position BB ', also includes digital micromirror device 15 for projection arrangement 1 and illustrates. As it is shown in figure 5, when multisection type colour wheel unit 12 is in position AA ', the light 111 that light source 11 sends is projected to inner ring colour wheel 21; When multisection type colour wheel unit 12 is in position BB ', the light 111 that light source 11 sends is projected to outer ring colour wheel 22.
The third situation, primary importance is position AA ', the second position is position BB ', switch 13 is arranged relative to multisection type colour wheel unit 12, so that when multisection type colour wheel unit 12 is switched to the second position by primary importance, light 111 by be projected to inner ring colour wheel 22 switch to be projected to outer ring colour wheel 21, multisection type colour wheel unit 12 13 contact with switch, switch 13 closes; When multisection type colour wheel unit 12 is switched to primary importance by the second position, light 111 by be projected to outer ring colour wheel 21 switch to be projected to inner ring colour wheel 22, multisection type colour wheel unit 12 13 separates with switch, switch 13 with disconnect.Control unit 14 can by the state of test point O, it is determined that the state of switch 13, so determine currently be switched to for inner ring colour wheel 22 or outer ring colour wheel 21. Concrete, for the voltage of test point O, when control unit 14 detect a voltage at O place be low-voltage time, it is determined that switch 13 Guan Bi, and then determine that what be switched to is outer ring colour wheel 21; When control unit 14 detect a voltage at O place be high voltage time, it is determined that switch 13 disconnection, so determine be switched to for inner ring colour wheel 22. As shown in Figure 4, for more convenient configuration switch 13, switch 13 can be arranged by multisection type colour wheel unit 12 relatively, when making switch 13 Guan Bi, multisection type colour wheel unit 12 and switch 13 are contacted with on the straight line CC that the central point of primary importance and the second position is constituted and are positioned at the right side of multisection type colour wheel unit 12, for instance N ' place.
4th kind of situation, primary importance is position BB ', the second position is position AA ', switch 13 is arranged relative to multisection type colour wheel unit 12, so that when multisection type colour wheel unit 12 is switched to the second position by primary importance, light 111 by be projected to outer ring colour wheel 21 switch to be projected to inner ring colour wheel 22, multisection type colour wheel unit 12 13 contact with switch, switch 13 closes; When multisection type colour wheel unit 12 is switched to primary importance by the second position, light 111 by be projected to inner ring colour wheel 22 switch to be projected to outer ring colour wheel 21, multisection type colour wheel unit 12 13 separates with switch, switch 13 disconnection. Control unit 14 can by the state of test point O, it is determined that the state of switch 13, so determine currently be switched to for inner ring colour wheel 22 or outer ring colour wheel 21. Concrete, for the voltage of test point O, when control unit 14 detect a voltage at O place be low-voltage time, it is determined that switch 13 Guan Bi, and then determine that what be switched to is inner ring colour wheel 22; When control unit 14 detect a voltage at O place be high voltage time, it is determined that switch 13 disconnection, so determine be switched to for outer ring colour wheel 21. As shown in Figure 4, for more convenient configuration switch 13, switch 13 can be arranged by multisection type colour wheel unit 12 relatively, when making switch 13 Guan Bi, multisection type colour wheel unit 12 and switch 13 are contacted with on the straight line CC that the central point of primary importance and the second position is constituted and are positioned at the left side of multisection type colour wheel unit 12, for instance M ' place.
Proximity switch is a kind of without carrying out mechanically direct contact with moving component and manipulable position switch, when the sensitive surface of object proximity switch is to operating distance, it is not necessary to Mechanical Contact and apply any pressure and can make switch motion. It is also preferred that the left switch 13 is proximity switch; When the distance of multisection type colour wheel unit 12 and switch 13 is less than or equal to the first preset value, switch 13 Guan Bi; When the distance of multisection type colour wheel unit 12 and switch 13 is more than the first preset value, switch 13 disconnection.
Control unit 14 is additionally operable to the colour wheel and the current application scene that are projected to according to light, it is determined whether need the position of switching multisection type colour wheel unit 12 to switch the colour wheel that light is projected to; In such manner, it is possible to according to current application scene automatic switchover colour wheel, improve Consumer's Experience. Concrete, inner ring colour wheel is 3 sections of color colour wheels, and the advantage of 3 sections of color colour wheels is have higher light transmittance, and therefore 3 sections of color colour wheels have higher brightness and contrast, is suitable for playing the application scenarios of the needs higher brightness such as business in brief; Outer ring colour wheel is 6 sections of color colour wheels, and the advantage of 6 sections of color colour wheels is for can promote color saturation, but brightness is on the low side relative to 3 sections of color colour wheels, is suitable for picture quality is required higher application scenarios.Exemplary, control unit 14 determines that current application scene is for playing business in brief, and control unit 14 determines that the colour wheel that light is projected to is outer ring colour wheel, then control unit 14 determines the position needing switching multisection type colour wheel unit 12 and to switch the colour wheel that the position of multisection type colour wheel unit 12 makes light be projected to be inner ring colour wheel.
The switch that projection arrangement provided by the invention includes is arranged relative to multisection type colour wheel unit, and multisection type colour wheel unit when switching between primary importance and the second position, switch and switch in closed and disconnected state, and then control unit can be in closure state by detection switch or off-state determines that light is projected to the first colour wheel or second colour wheel of multisection type colour wheel unit, and then can automatically distinguish the colour wheel of switching at present and be able to confirm that whether accurately have switched colour wheel.
The present invention is been described by by above-mentioned related embodiment, but above-described embodiment is only the example implementing the present invention. It must be noted that, the embodiment disclosed is not limiting as the scope of the present invention. On the contrary, the change made without departing from the spirit and scope of the present invention and retouching, all belong to the scope of patent protection of the present invention.
Claims (9)
1. a projection arrangement, it is characterised in that including:
Light source, for throw light;
Multisection type colour wheel unit, is arranged in the light path of this light, and this multisection type colour wheel unit includes the first colour wheel and the second colour wheel;
Switch; And
Control unit, it is coupled to this light source, this multisection type colour wheel unit and this switch, this control unit switches between primary importance and the second position in order to control this multisection type colour wheel unit, so that the light of this light source projects is optionally projected to this first colour wheel or this second colour wheel;
Wherein, this switch is arranged relative to this multisection type colour wheel unit, so that when this control unit control this multisection type colour wheel unit switch between this primary importance and this second position time, this switchs and switches between closure state and off-state, and then by detecting the state of this switch, colour wheel that this control unit determines that this light is projected to is this first colour wheel or this second colour wheel.
2. projection arrangement as claimed in claim 1, it is characterised in that when this multisection type colour wheel unit and this switch contact, this switch closes; When this multisection type colour wheel unit separates with this switch, this switches off.
3. projection arrangement as claimed in claim 2, it is characterised in that this switch is touch switch.
4. projection arrangement as claimed in claim 1, it is characterised in that when the distance of this multisection type colour wheel unit and this switch is less than or equal to the first preset value, this switch closes; When the distance of this multisection type colour wheel unit and this switch is more than this first preset value, this switches off.
5. projection arrangement as claimed in claim 4, it is characterised in that this switch is proximity switch.
6. projection arrangement as claimed in claim 1, it is characterised in that this control unit is additionally operable to the colour wheel and the current application scene that are projected to according to this light, it is determined whether need the position switching this multisection type colour wheel unit to switch the colour wheel that this light is projected to.
7. projection arrangement as claimed in claim 1, it is characterised in that this control unit couples the state at this switch place and detects the state of this switch by detecting this control unit.
8. projection arrangement as claimed in claim 7, it is characterised in that this control unit couples the state at this switch place and couples this switch place voltage, resistance or electric current for this control unit.
9. projection arrangement as claimed in claim 1, it is characterised in that this first colour wheel is inner ring colour wheel, and this second colour wheel is outer ring colour wheel; Or, this first colour wheel is outer ring colour wheel, and this second colour wheel is inner ring colour wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410840652.6A CN104730821B (en) | 2014-12-30 | 2014-12-30 | Projection arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410840652.6A CN104730821B (en) | 2014-12-30 | 2014-12-30 | Projection arrangement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104730821A CN104730821A (en) | 2015-06-24 |
| CN104730821B true CN104730821B (en) | 2016-06-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410840652.6A Active CN104730821B (en) | 2014-12-30 | 2014-12-30 | Projection arrangement |
Country Status (1)
| Country | Link |
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| CN (1) | CN104730821B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105045026A (en) * | 2015-09-16 | 2015-11-11 | 重庆泽青巨科技发展有限公司 | Projection display device |
| CN109115349B (en) | 2017-06-22 | 2020-08-25 | 深圳光峰科技股份有限公司 | Color wheel phase detection method and system and projection equipment |
Citations (6)
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| CN1488986A (en) * | 2002-10-11 | 2004-04-14 | 中强光电股份有限公司 | Multi-layer optical filtering device |
| CN1496493A (en) * | 2001-02-06 | 2004-05-12 | Lamp power pulse modulation in color sequential projection displays | |
| CN1719333A (en) * | 2004-07-05 | 2006-01-11 | 台达电子工业股份有限公司 | Multifunction colour wheel |
| JP2009222741A (en) * | 2008-03-13 | 2009-10-01 | Seiko Epson Corp | Image display device |
| TW201337437A (en) * | 2012-03-09 | 2013-09-16 | Delta Electronics Inc | Illumination system for projection device |
| CN203453998U (en) * | 2013-07-24 | 2014-02-26 | 深圳雅图数字视频技术有限公司 | Color wheel device and DLP projection system |
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2014
- 2014-12-30 CN CN201410840652.6A patent/CN104730821B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1496493A (en) * | 2001-02-06 | 2004-05-12 | Lamp power pulse modulation in color sequential projection displays | |
| CN1488986A (en) * | 2002-10-11 | 2004-04-14 | 中强光电股份有限公司 | Multi-layer optical filtering device |
| CN1719333A (en) * | 2004-07-05 | 2006-01-11 | 台达电子工业股份有限公司 | Multifunction colour wheel |
| JP2009222741A (en) * | 2008-03-13 | 2009-10-01 | Seiko Epson Corp | Image display device |
| TW201337437A (en) * | 2012-03-09 | 2013-09-16 | Delta Electronics Inc | Illumination system for projection device |
| CN203453998U (en) * | 2013-07-24 | 2014-02-26 | 深圳雅图数字视频技术有限公司 | Color wheel device and DLP projection system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104730821A (en) | 2015-06-24 |
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