CN101000454A - Projector with lenshood setted between light source and digital microchip lens driven by motor - Google Patents
Projector with lenshood setted between light source and digital microchip lens driven by motor Download PDFInfo
- Publication number
- CN101000454A CN101000454A CN 200610004876 CN200610004876A CN101000454A CN 101000454 A CN101000454 A CN 101000454A CN 200610004876 CN200610004876 CN 200610004876 CN 200610004876 A CN200610004876 A CN 200610004876A CN 101000454 A CN101000454 A CN 101000454A
- Authority
- CN
- China
- Prior art keywords
- projector
- light shield
- light
- motor
- digital
- 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.)
- Pending
Links
Images
Abstract
A projector using motor to drive lens-hood setted between light source and digital microcrystal lens consists of light source, digital microcrystal lens and lens shade set between light source and digital microcrystal lens. It is featured as using motor to drive said lens shade so that it is not necessary to use hand to regulate lens shade. The method for regulating said projector in accurate mode is also disclosed.
Description
Technical field
The present invention relates to a kind of projector, relate in particular to and a kind ofly be located at the projector of the light shield between light source and the digital crystallite eyeglass (digital micro-mirror device), the invention still further relates to a kind of method of controlling the image contrast of projector by motor driven.
Background technology
Usually, when in meeting, giving a report, in order to make the personnel participating in the meeting can know the content outline of understanding in the report, the reporter often utilizes projector that the interior perhaps chart that will report is projected on the screen, make the participant grasp report content, and carry out interactive communication with the reporter by watching the data on the screen.Along with the progress of science and technology, projector is more and more popularized and reasonable price, so projector also incorporates among the general family life gradually.Usually projector is cooperated with audio and video equipment, for example cooperate, the user can be enjoyed as the audiovisual impression as on the spot in person in the cinema by means of the super large picture that projector projects is come out with the DVD player of high-power sound equipment and high-quality picture etc.
Please refer to Fig. 1, Fig. 1 is the inner structure synoptic diagram of existing projector 100.Projector 100 comprises light source 110, a plurality of lens 112, catoptron 114, digital crystallite eyeglass 116 and projection lens 118.The light that light source 110 sends along opticpath 124 with penetrate or reflection way in regular turn by described element, and projector 100 image projectings to display are come out.In general, the bare engine module 120 that is called as projector 110 from light source 110 to digital crystallite eyeglass 116 these sections.In order to control the image contrast of projector 100, projector 100 also comprises the light shield 130 between digital crystallite eyeglass 116 and projection lens 118, and it is used for blocking the light that part light source 110 sends.Light shield 130 is driven by motor, and the user can utilize the button control light shield 1 30 on telepilot or the projector 100 to adjust image contrast.Please refer to Fig. 2, Fig. 2 is the synoptic diagram of the manual light shield 140 in the bare engine module 120 shown in Figure 1.In the prior art, bare engine module 120 also comprises manual light shield 140, so that the user can block the projection ray that part light source 110 sends by the rotatable lamella 144 of stirring driving lever 142 rotation manual light shields 140, further to adjust the image contrast of projector 100.
Yet when the user watched projection image, the user had a segment distance from projector 100 usually, therefore must get ahead to putting in order manual light shield 140 with hand adjustment near the projector 100.Moreover, when the user adjusts light shield 130 and manual light shield 140, because of the drop shadow spread of light along with opticpath 124 amplifies with predetermined ratio, so light shield 130 and manually the action of light shield 140 proportionate relationship is arranged, the user common adjust repeatedly light shield 130 and manually light shield 140 to reach suitable image contrast.In the prior art, put in order manual light shield 140 and can not adjust light shield 130 and the manually action of light shield 140 synchronously in the predetermined ratio mode with hand adjustment, this is quite inconvenient for the user and can not realize accurate adjustment.
Summary of the invention
Therefore, the purpose of this invention is to provide and a kind ofly be located at projector and a kind of method of controlling the image contrast of projector of the light shield between light source and the digital crystallite eyeglass, to solve described problem with motor driven.
Projector of the present invention comprise light source, digital crystallite eyeglass and be located at light source and digital crystallite eyeglass between light shield.This light shield comprises support; Be fixed in the stator on the support; Be fixed in guide rod on the support in rotating mode; One end links to each other with guide rod, is used for along the moving sheet of guide rod move left and right; And be used for driving guide rod and rotate motor with this moving sheet of move left and right.
The method of the image contrast of control projector of the present invention comprises: first light shield is provided, is located between the light source and digital crystallite eyeglass of projector; Second light shield is provided, is located between the projection lens and digital crystallite eyeglass of projector; Reach size according to formed perforate on predetermined ratio synchro control first and second light shields.
Description of drawings
Fig. 1 is the inner structure synoptic diagram of existing projector;
Fig. 2 is the synoptic diagram of the manual light shield of projector shown in Figure 1;
Fig. 3 is the inner structure synoptic diagram of projector of the present invention;
Fig. 4 is a synoptic diagram of being located at first light shield between light source shown in Figure 3 and the digital crystallite eyeglass of the present invention;
Fig. 5 is the synoptic diagram of projector control image contrast shown in Figure 3.
Description of reference numerals
100,200 projector, 110 light sources
112 lens, 114 catoptrons
116 digital crystallite eyeglass 118 projection lens
120 bare engine modules, 124 opticpaths
130,150 light shields, 132,160 motors
134,164 perforates, 140 manual light shields
142 driving levers, 144 rotatable lamellas
152 supports, 154 stators
156 moving sheets, 158 guide rods
162 gears, 166 guide rails
170 chip for driving
Embodiment
Please refer to Fig. 3, Fig. 3 is the inner structure synoptic diagram of projector 200 of the present invention.Projector 200 of the present invention comprises light source 110, a plurality of lens 112, catoptron 114, digital crystallite eyeglass 116 and projection lens 118, wherein, the light that light source 110 sends along opticpath 124 with penetrate or reflection way in regular turn by described element, and projector 200 image projectings to display are come out.In addition, second light shield 130 of projector 200 is between digital crystallite eyeglass 116 and projection lens 118, and first light shield 150 is between light source 110 and catoptron 114.Projector 200 also comprises the chip for driving 170 that is coupled in second light shield 130 and first light shield 150, is used for controlling the action of light shield 130,150.First light shield 150 in the bare engine module 120 of the present invention is driven by motor, so the user does not need to adjust first light shield 150 with hand again.In addition, chip for driving 170 is according to the action of predetermined ratio synchro control second light shield 130 and first light shield 150, and so the user can more accurately adjust the image contrast of projector 200.
Please refer to Fig. 4, Fig. 4 is a synoptic diagram of being located at first light shield 150 between light source shown in Figure 3 110 and the catoptron 114 of the present invention.First light shield 150 comprises support 152, be fixed in stator 154 on the support 152, be fixed in guide rod 158, an end on the support 152 in rotating mode links to each other with guide rod 158 and is used for along the moving sheet t56 of guide rod 158 move left and right and is used for driving guide rod 158 rotating so that the motor 160 of moving sheet 156 move left and right.The stator 154 of first light shield 150 of the present invention maintains static, and stator 154 cooperates moving sheet 156 to block the light that part light source 110 sends.In addition, the other end of the guide rail 166 restriction moving sheets 156 on the stator 154 rotates with the rotation of guide rod 158 to prevent moving sheet 156.Certainly, the present invention also can utilize structure or moving sheet 156 profiles own on the support 152 to prevent that moving sheet 156 from rotating with the rotation of guide rod 158.One end of moving sheet 156 is connected on the guide rod 158, and screw thread is arranged on the guide rod 158, and when motor 160 rotated, guide rod 158 also and then rotated, and the screw thread on the guide rod 158 drives moving sheet 156 move left and right along with the rotation of guide rod 158.The move left and right of moving sheet 156 will change the size of the perforate 164 between stator 154 and the moving sheet 156, perforate 164 is healed light that little then first light shield 150 blocks just the more, and the light that bigger then first light shield 150 of perforate 164 blocks just can allow light pass through less even fully.
Please refer to Fig. 5, Fig. 5 is the synoptic diagram of projector 200 control image contrast shown in Figure 3.The image contrast of projector 200 is relevant by the light amount of light shield 130,150 with projection ray, so the size of the perforate 134,164 of light shield 130,150 is also determining the contrast degree of projection image.The present invention utilizes the action of chip for driving 170 synchro control, second light shield 130 and first light shield 150, that is the size of the perforate 134,164 of synchro control second light shield 130 and first light shield 150.As shown in Figure 5, the light that sends from light source 110 amplifies its drop shadow spread along opticpath 124 with predetermined ratio.On first light shield 150 in bare engine module 120, because of light shorter along the distance of opticpath 124 walking, so the drop shadow spread of light on first light shield 150 is less, and on second light shield 130 between digital crystallite eyeglass 116 and the projection lens 118, the distance of walking along opticpath 124 because of light is longer, so the drop shadow spread of light on second light shield 130 is bigger.Therefore when projector 200 adjustment light shields 130,150, need to adjust the size of the perforate 134,164 of light shield 130,150 according to this predetermined ratio, if second light shield 130 or first light shield 150 are not adjusted the size of its perforate 134,164 according to this predetermined ratio, then a certain light shield 130,150 will block too much light, or a certain light shield 130,150 will block the light that lacks than desired, thereby will influence the image contrast of projector 200.For instance, suppose that predetermined ratio is 2: 3, when the area of the perforate 134 of second light shield 130 dwindles 3mm
2The time, then the area of the perforate 164 of first light shield 150 also must dwindle 2mm
2Otherwise, when the area of the perforate 134 of second light shield 130 amplifies 3mm
2The time, then the area of the perforate 164 of first light shield 150 also must amplify 2mm
2Therefore, when the action of chip for driving 170 synchro control, second light shield 130 and first light shield 150, must be according to the action of this predetermined ratio synchro control second light shield 130 and first light shield 150.In addition, if the motor 132,160 of the light shield 130 and first light shield 150 is all step motor, then 170 need of chip for driving provide the pulse signal of described estimated rate to motor 132,160, so that motor 132,160 drives light shield 130,150 according to the pulse signal of this estimated rate.
In the embodiment of Fig. 5; second light shield 130 between numeral crystallite eyeglass 116 and the projection lens 118 is with the example that is designed to of first light shield 150 shown in Figure 4; yet second light shield 130 is not necessarily according to this kind design; also can use known light shield; need only size according to the perforate 134,164 of a predetermined ratio synchro control second light shield 130 and first light shield 150; that is to say, all should fall into protection scope of the present invention according to the light amount of a predetermined ratio synchro control by the projection ray of second light shield 130 and first light shield 150.
Comprehensive the above, projector 200 provided by the present invention has first light shield 150 that drives with motor 160, it is located between light source 110 and the digital crystallite eyeglass 116, and the present invention can utilize chip for driving 170 that the pulse of a predetermined ratio is provided, action with synchro control second light shield 130 and first light shield 150, so the user only need utilize the button on telepilot or the projector 200 to send a signal to chip for driving 170, get final product synchro control light shield 130,150, and then adjust image contrast.
Compared with prior art, first light shield of being located between light source 110 and the digital crystallite eyeglass 116 150 of the present invention is driven by motor 160, and therefore, the user does not need again with whole first light shield 150 of hand adjustment.In addition, the present invention also provides a kind of method of adjusting the image contrast of projector 200 according to the action of predetermined ratio synchro control second light shield 130 and first light shield 150, in more accurate mode.
The above only is a preferred implementation of the present invention, and the equivalents that all designs according to the present invention are made all should fall into protection scope of the present invention with modification.
Claims (9)
1. projector, it comprise light source, digital crystallite eyeglass and be located at described light source and digital crystallite eyeglass between first light shield, this first light shield comprises:
Support;
Be fixed in the stator on this support;
Be fixed in guide rod on this support in rotating mode;
One end links to each other with described guide rod and is used for moving sheet along described guide rod move left and right, and wherein this moving sheet and described stator form a perforate; And
Be used for driving the motor of described guide rod rotation with the described moving sheet of move left and right.
2. projector as claimed in claim 1 wherein, also comprises:
Projection lens;
Be located at second light shield between this projection lens and the described digital crystallite eyeglass; And
Be used for the chip for driving of described first and second light shields of synchro control.
3. projector as claimed in claim 2, wherein, described chip for driving is used for according to the size of formed perforate on described first and second light shields of predetermined ratio synchro control.
4. projector as claimed in claim 1, wherein, described light shield also comprises the gear that is coupled between described motor and the guide rod.
5. projector as claimed in claim 1, wherein, described motor is a step motor.
6. projector as claimed in claim 1, wherein, described moving sheet with the vertical direction of the light that sends with described light source along described guide rod move left and right.
7. method of controlling the image contrast of projector, it comprises:
First light shield is provided, is located between the light source and digital crystallite eyeglass of this projector;
Second light shield is provided, is located between the projection lens and described digital crystallite eyeglass of this projector; And
Size according to formed perforate on described first and second light shields of predetermined ratio synchro control.
8. method as claimed in claim 7 wherein, is used first motor to drive described first light shield, and is used second motor to drive described second light shield.
9. method as claimed in claim 8 wherein, provides the pulse of described estimated rate to described two motors, so that described two motors drive described two light shields according to the pulse of described estimated rate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610004876 CN101000454A (en) | 2006-01-10 | 2006-01-10 | Projector with lenshood setted between light source and digital microchip lens driven by motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610004876 CN101000454A (en) | 2006-01-10 | 2006-01-10 | Projector with lenshood setted between light source and digital microchip lens driven by motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101000454A true CN101000454A (en) | 2007-07-18 |
Family
ID=38692479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610004876 Pending CN101000454A (en) | 2006-01-10 | 2006-01-10 | Projector with lenshood setted between light source and digital microchip lens driven by motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101000454A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101561621B (en) * | 2008-04-17 | 2010-12-08 | 鸿富锦精密工业（深圳）有限公司 | Anti-dazzling screen and an optical projector using the anti-dazzling screen |
| CN105142498A (en) * | 2013-03-15 | 2015-12-09 | 感知技术有限公司 | Enhanced optical and perceptual digital eyewear |
-
2006
- 2006-01-10 CN CN 200610004876 patent/CN101000454A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101561621B (en) * | 2008-04-17 | 2010-12-08 | 鸿富锦精密工业（深圳）有限公司 | Anti-dazzling screen and an optical projector using the anti-dazzling screen |
| CN105142498A (en) * | 2013-03-15 | 2015-12-09 | 感知技术有限公司 | Enhanced optical and perceptual digital eyewear |
| CN105142498B (en) * | 2013-03-15 | 2022-10-11 | 感知技术有限公司 | Enhanced optical and perceptual digital eyewear |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TW200540550A (en) | Display device | |
| US7703929B2 (en) | Edge blending device, light shielding device and multi-projection system | |
| EP1855470A1 (en) | Image offset adjustment apparatus for LCD projector and mobile phone having same | |
| CN201708873U (en) | Double-screen display television (TV) set | |
| CN101000454A (en) | Projector with lenshood setted between light source and digital microchip lens driven by motor | |
| CN202472234U (en) | 3D stereoscopic image shooting device | |
| KR101199757B1 (en) | Display device and display method | |
| CN101419378B (en) | Infrared emanation source adjustable monitoring and shooting device | |
| US7434938B2 (en) | Display device movable for front and rear projection | |
| RU2218586C2 (en) | Motion-picture projection system with switch-selectable format | |
| CN218719816U (en) | Projector and projection apparatus | |
| CN201293856Y (en) | Device for monitoring and image-shooting adjustable infrared ray transmission light source | |
| JP5932807B2 (en) | 3D display panel, 3D display device using the same, and driving method thereof | |
| CN102629072A (en) | Semi-automatic focusing method of projector and projector | |
| US20070146648A1 (en) | Projector Using a Motor for Driving an Iris Installed Between a Light Source and a Digital Micro-Mirror Device | |
| CN110545377B (en) | Digital shooting table capable of adjusting light and shooting distance | |
| CN211086899U (en) | Bidirectional projection device | |
| CN204028435U (en) | The accurate zoom lens that a kind of remote control is controlled | |
| CN201097093Y (en) | Ratio variable electric projection screen | |
| CN110581942B (en) | Method and system for recording stage drama video | |
| US7654678B1 (en) | Cinewide with autoscope | |
| CN210008665U (en) | Speech table with adjustable display screen | |
| CN204256355U (en) | A kind of projector regulates focusing mechanism automatically | |
| CN219145439U (en) | Prompter device | |
| CN202133995U (en) | Multimedia projection image playing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |