CN101008709A - Projector with dimmer and light dimming method therefor - Google Patents
Projector with dimmer and light dimming method therefor Download PDFInfo
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- CN101008709A CN101008709A CN 200610002936 CN200610002936A CN101008709A CN 101008709 A CN101008709 A CN 101008709A CN 200610002936 CN200610002936 CN 200610002936 CN 200610002936 A CN200610002936 A CN 200610002936A CN 101008709 A CN101008709 A CN 101008709A
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- projector
- light beam
- elliptical reflector
- catoptron
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Abstract
This invention relates to one projector, which comprises one light part to generate beam, one reflection lens to focus light beam to certain area, one beam integration tube in preset area and one light adjust device to change light beam integration tube and reflection lens relative position to adjust the output brightness. This invention adjust method is to change said light beam integration tube and the reflection lens position to adjust projector output brightness.
Description
Technology neck city
The present invention relates to a kind of projector and its light-dimming method, relate in particular to light modulating device and its light-dimming method that a kind of relative position by integrated pipe of the light beam that changes described projector and catoptron is adjusted the output brightness (outputbrightness) of described projector with light modulating device.
Background technology
In all kinds of large-scale advertisement billboard, video wall has been widely used in the surging lively merchant district of the crowd, and the sound and light program of the excellence by video wall causes consumer's notice, and then reaches the purpose of advertisement marketing.
Fig. 1 is the synoptic diagram of the video wall 60 of a routine.Described video wall 60 comprises four display unit 62A, 62B, 62C and 62D, and it is by a mother picture 70 being divided into four sprite 72A, 72B, 72C and 72D, being shown in four display unit 62A, 62B, 62C and 62D more respectively.By the combination of described four display unit 62A, 62B, 62C and 62D, the mode that described mother picture 70 can quadruplication shows.The brightness of each display unit 62A, 62B, 62C and 62D must be consistent, just can present uniform whole image quality.But the element of each display unit 62A, 62B, 62C and 62D often has different brightness because of difference each other, causes bad image quality.
Routine techniques is the brightness of adjusting each display unit 62A, 62B, 62C and 62D by the power of control light-emitting device (for example wick), but this adjustment technology only has adjusting range a little, can't practical requirement.
Summary of the invention
Fundamental purpose of the present invention provides a kind of projector and its light-dimming method, it is the output brightness of adjusting projector by the relative position of integrated pipe of the light beam that changes described projector and catoptron (reflector), producing the picture of consistent uniform luminance, and promote image quality.
For achieving the above object, the present invention proposes a kind of projector, and it comprises one and can send light beam and adjust the light modulating device of the output brightness of described projector to the integrated pipe of light beam and that the light-emitting device, of a presumptive area is arranged at described presumptive area by the relative position that changes integrated pipe of described light beam and described light-emitting device.Described light-emitting device comprises a wick and that can produce light beam can assemble the reflecting element of described light beam to described presumptive area, for example a catoptron.Preferably, described catoptron is an elliptical reflector (elliptical reflector), and described wick is to be arranged on the focus of described elliptical reflector, and another focus of described elliptical reflector is to be positioned at described presumptive area.Described light modulating device can comprise for example microscope carrier and the mobile device in order to mobile described microscope carrier of the described elliptical reflector of a carrying.Furthermore, described mobile device comprises a tooth bar, that is arranged at the side of described microscope carrier and drives the gear and of described tooth bar in order to drive the motor of described gear by rotation.
The present invention proposes a kind of projector and light-dimming method with dimming function, it is characterized in that the relative position by the integrated Guan Yuyi catoptron of a light beam that changes described projector, and then adjusts the output brightness of described projector.The different disappearance of brightness of the display unit of the routine that therefore is improved, and then improve image quality significantly.
Description of drawings
Fig. 1 is the synoptic diagram of the video wall of a routine; With
Fig. 2 is to Fig. 4 projector with light modulating device of the present invention that demonstrates.
Embodiment
Fig. 2 is to Fig. 4 projector 30 of the present invention that demonstrates.Described projector 30 comprises a light-emitting device 35, that can send light beam 36 to one presumptive area 38A and is arranged at the integrated pipe of the light beam of described presumptive area 38A 38, in order to change the light modulating device 50 of the integrated pipe 38 of described light beam and the relative position of described catoptron 34.Described light-emitting device 35 comprises the catoptron 34 that a wick 32 and that can produce light beam 36 can be assembled described light beam 36 to described presumptive area 38A.The integrated pipe 38 of described light beam can be inside surface coating reflecting material or is processed into the hollow tube with reflection ray effect or characteristic, but the intensity distributions of the described light beam 36 of homogenising.
It is elliptical reflectors that described projector 30 can comprise a colour wheel 46, a relay lens 40, a micro-mirror element (micromirror device) 42, one projection lens 48 and the described catoptron 34 of an image-displaying member 44 (for example screen of a video wall) in addition, described wick 32 is to be arranged on the focus of described elliptical reflector 34, and another focus of described catoptron 34 is to be positioned at described presumptive area 38A.Described micro-mirror element 42 can utilize numeral or analog form control.
Referring to Fig. 3, light modulating device 50 of the present invention comprises any mobile device that can be used to move described catoptron 34.In one embodiment, described light modulating device 50 can comprise the microscope carrier 52 and of the described elliptical reflector 34 of a carrying in order to move the mobile device 55 of described microscope carrier.Preferably, described mobile device 55 comprises a tooth bar 54 that is arranged at the side of described microscope carrier 52, and drives the motor 58 of gear 56 and in order to drive described gear 56 of described tooth bar 54 by rotation.The present invention also optionally is provided with described drive unit 55 at other side of described microscope carrier 52, promptly uses the microscope carrier of a tool three-dimensional moving mechanism, changes integrated pipe 38 of described light beam and the relative position of described catoptron 34 at three-dimensional.In other embodiments, described light modulating device 50 can be the microscope carrier and the slideway combination of the described catoptron 34 of carrying, by motor or other mechanism's type of drive, promote or spur described microscope carrier all around or up and down, to change described catoptron 34 and integrated pipe 38 relative distances of described light beam or position.
Referring to Fig. 4, the light beam 36 that described wick 32 sends is gathered in the integrated pipe 38 of described light beam through described elliptical reflector 34, and its intensity is to be Gaussian distribution (Gaussian distribution).Described wick 32 is to be arranged at upright position A, and its intensity distributions can be by Gaussian distribution curve A ' expression, and another focus of described elliptical reflector 34 is to be arranged at the integrated pipe 38 of described light beam.If the integrated pipe 38 of described light beam also is positioned at described upright position A, be that described wick 32 has identical upright position with the integrated pipe 38 of described light beam, the maximum intensity region of so described Gaussian distribution curve A ' will fall into the integrated pipe 38 of described light beam, and said projector 30 will have maximum output brightness.
If utilize described light modulating device 50 that described elliptical reflector 34 (with the wick 32 of its inside) is moved (this moment intensity distributions can by another Gaussian distribution curve B ' expression) to another upright position B, the position of the integrated pipe 38 of described light beam then remains unchanged, and promptly changes the relative position of described elliptical reflector 34 and the integrated pipe 38 of described light beam.The maximum intensity region of described Gaussian distribution curve B ' does not fall into the integrated pipe 38 of described light beam, and the output brightness of said projector 30 is less.
Concise and to the point, if increase the output brightness of described projector 30, the relative position that changes described elliptical reflector 34 and the integrated pipe 38 of described light beam so is so that described wick 32 (being a focus of described elliptical reflector 34) is identical with the upright position of the integrated pipe 38 of described light beam.Anti-, if reduce the output brightness of described projector 30, the relative position that changes described elliptical reflector 34 and the integrated pipe 38 of described light beam so is so that the upright position of the integrated pipe 38 of described light beam is departed from the upright position of described wick 32.
Briefly, if being a focus (being the upright position of described wick 32) of described elliptical reflector 34, setting bias departs from the degree of the upright position of the integrated pipe 38 of described light beam, so can be by increasing the output brightness that described bias reduces described projector 30, reduce described bias and increase the output brightness of described projector 30.So, the present invention is applied to the video wall 60 of Fig. 1, the elliptical reflector 34 of projector 30 that can be by changing each display unit 62A, 62B, 62C and 62D and the relative position of the integrated pipe 38 of light beam, and individually adjust the brightness of each display unit 62A, 62B, 62C and 62D, and make four display unit 62A, 62B, 62C and 62D have consistent brightness uniformly to present best image quality.
Technology contents of the present invention and technical characterstic disclose as above, yet the those skilled in the art still may be based on teaching of the present invention and announcement and made all substitutions and modifications that do not deviate from spirit of the present invention.Therefore, protection scope of the present invention should be not limited to the content that embodiment discloses, and should comprise the various substitutions and modifications of the present invention that do not deviate from, and is contained by appending claims.
Claims (13)
1. projector is characterized in that comprising:
One light-emitting device comprises a wick and that can produce light beam and can assemble the catoptron of described light beam to a presumptive area;
The integrated pipe of one light beam is arranged at described presumptive area; With
One light modulating device is adjusted the output brightness of described projector in order to the relative position that changes integrated pipe of described light beam and described catoptron.
2. projector according to claim 1 it is characterized in that described catoptron is an elliptical reflector, and described wick is to be arranged on the focus of described elliptical reflector.
3. projector according to claim 1 it is characterized in that described catoptron is an elliptical reflector, and a focus of described elliptical reflector is to be positioned at described presumptive area.
4. projector according to claim 1 is characterized in that described light modulating device comprises:
One microscope carrier, described catoptron are to be arranged on the described microscope carrier; With
One mobile device is in order to move described microscope carrier.
5. projector according to claim 4 is characterized in that described mobile device comprises:
One tooth bar is arranged at the side of described microscope carrier;
One gear drives described tooth bar by rotation; With
One motor is in order to drive described gear.
6. the light-dimming method of a projector is characterized in that the relative position of the integrated Guan Yuyi catoptron of a light beam by changing described projector adjusts the output brightness of described projector.
7. the light-dimming method of projector according to claim 6 is characterized in that described catoptron is an elliptical reflector.
8. the light-dimming method of projector according to claim 7, the wick that it is characterized in that a light-emitting device is to be arranged on the focus of described elliptical reflector.
9. the light-dimming method of projector according to claim 7, a focus that it is characterized in that described elliptical reflector is to be positioned at the integrated pipe of described light beam.
10. the light-dimming method of projector according to claim 7, the wick that it is characterized in that a light-emitting device is to be arranged on the focus of described elliptical reflector, and reduces the output brightness of described projector by the bias that increases described elliptical reflector and the integrated pipe of described light beam.
11. the light-dimming method of projector according to claim 7, the wick that it is characterized in that a light-emitting device is to be arranged on the focus of described elliptical reflector, and increases the output brightness of described projector by the bias that reduces described elliptical reflector and the integrated pipe of described light beam.
12. the light-dimming method of projector according to claim 6, the integrated pipe of a light beam that it is characterized in that utilizing a light modulating device to change described projector and the relative position of described elliptical reflector, wherein said light modulating device comprises:
One microscope carrier, described catoptron are to be arranged on the described microscope carrier; With
One mobile device is in order to move described microscope carrier.
13. the light-dimming method of projector according to claim 12 is characterized in that described mobile device comprises:
One tooth bar is arranged at the side of described microscope carrier;
One gear drives described tooth bar by rotation; With
One motor is in order to drive described gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610002936 CN101008709A (en) | 2006-01-25 | 2006-01-25 | Projector with dimmer and light dimming method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610002936 CN101008709A (en) | 2006-01-25 | 2006-01-25 | Projector with dimmer and light dimming method therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101008709A true CN101008709A (en) | 2007-08-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610002936 Pending CN101008709A (en) | 2006-01-25 | 2006-01-25 | Projector with dimmer and light dimming method therefor |
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| Country | Link |
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| CN (1) | CN101008709A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953878A (en) * | 2014-04-23 | 2014-07-30 | 苏州工业职业技术学院 | LED (light emitting diode) road lamp with color temperature switching function |
| CN109540035A (en) * | 2019-01-14 | 2019-03-29 | 吉林大学 | Illumination adjustable automobile panorama visual detection system based on oval reflexed light ring |
| CN111839120A (en) * | 2020-07-27 | 2020-10-30 | 广州融尚贸易有限公司 | Liftable commodity show shelf based on internet live takes goods to use |
-
2006
- 2006-01-25 CN CN 200610002936 patent/CN101008709A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953878A (en) * | 2014-04-23 | 2014-07-30 | 苏州工业职业技术学院 | LED (light emitting diode) road lamp with color temperature switching function |
| CN109540035A (en) * | 2019-01-14 | 2019-03-29 | 吉林大学 | Illumination adjustable automobile panorama visual detection system based on oval reflexed light ring |
| CN111839120A (en) * | 2020-07-27 | 2020-10-30 | 广州融尚贸易有限公司 | Liftable commodity show shelf based on internet live takes goods to use |
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