CN2630900Y - Light source module - Google Patents
Light source module Download PDFInfo
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- CN2630900Y CN2630900Y CN 03246597 CN03246597U CN2630900Y CN 2630900 Y CN2630900 Y CN 2630900Y CN 03246597 CN03246597 CN 03246597 CN 03246597 U CN03246597 U CN 03246597U CN 2630900 Y CN2630900 Y CN 2630900Y
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- light
- incident beam
- processing element
- optical processing
- source module
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Abstract
A light source module, being used in a projector, includes a luminous element, an optical processing element and a reflex element. The luminous element provides incident beams, and the optical processing element is arranged on the optical path of the incident beams. The optical processing element makes a part of the incident beams pass the optical processing element and output by the optical processing element, while another part of the incident beams not passing the optical processing element become reflected beams by reflection of the optical processing element. The reflex element is arranged between the luminous element and the optical processing element, which is used to reflect the reflected beams to the optical processing element and output by the optical processing element.
Description
Technical field
The utility model relates to a kind of light source module, particularly relates to the light source module of a kind of use in projector.
Background technology
Projector mainly realizes that by two kinds of display techniques a kind of is liquid crystal display (LCD) shadow casting technique at present, and another kind then is that digital light is handled (DLP) shadow casting technique.
With reference to Fig. 1, the in-built synoptic diagram of LCD projector that its expression is traditional.LCD projector 100 mainly includes fluorescent tube 105, snoot 110, Polarizer 115, liquid crystal panel 120,125,130, spectroscope 140,145,150, closes light microscopic 160,165,170 and optical frames group 180.
For example the fluorescent tube 105 of metal halid lamp or cold light source is that 110 of snoots and fluorescent tube 105 couple, and make light become incident beam 107 in order to converge light in order to emission light.Polarizer 115 usefulness are carried out beam split through spectroscope 140,145 and 150 by the incident beam behind the Polarizer 115 again so that have the incident beam 107 of certain particular phases and pass through, and make incident beam become three kinds of primary colour beams of red, green, blue.
LCD projector 100 is used three liquid crystal panels 120,125 and 130, respectively as the image-forming block of Red Green Blue.And all have on each sheet liquid crystal panel and screen 190 image slices vegetarian refreshments image-generating unit one to one, when the incident beam of the light-emitting component that comes free fluorescent tube 105 and snoot 110 to form through spectroscope 140,145 and 150 form homogeneous beam arrives each self-corresponding liquid crystal panel 120, after 125 and 130, three incident beams that liquid crystal panel passes through according to the color control of pixel, at last through closing light microscopic 160,165,170 close light and through optical frames group 180, image is shown enlarged on the screen 190, from three liquid crystal panels 120, light beam on 125 and 130 will become a pixel by consor on screen 190.
Different with above-mentioned LCD projector 100 with three liquid crystal panels, the another kind of normal LCD projector of using then is the LCD projector that only has the single chip liquid crystal panel.Though do not have the spectroscope in order to beam split in this projector, explicit principle is similar to the LCD projector of three-chip type.For example, one chip is identical with the LCD projector of three-chip type, and all the light-emitting component of being made up of fluorescent tube and optically focused list provides an incident beam that exposes to Polarizer.Polarizer is selected an incident beam with particular phases in the incident beam thus, and the incident beam with particular phases can be exported by Polarizer and by Polarizer.Then, by the incident beam with particular phases of Polarizer output just transmission after the optical frames group is amplified image, be presented on the screen more at last after the one chip liquid crystal panel that has the red, green, blue three-colour filter simultaneously.
With reference to Fig. 2 A, the in-built synoptic diagram of digital light processing projector that its expression is traditional.Digital light processing projector 200 mainly includes fluorescent tube 205, snoot 210, colored filter rotating disk 215, digital micromirror elements (DMD) 220.
Fluorescent tube 205 couples with snoot 210, and fluorescent tube 205 is in order to emission light, and 210 of snoots make light become incident beam 207 in order to converge the light that fluorescent tube 205 is launched.Colored filter rotating disk 215 is in order to be divided into the Red Green Blue light beam with incident beam 207.Simultaneously with reference to Fig. 2 A and Fig. 2 B, the front view of colored filter rotating disk among Fig. 2 B presentation graphs 2A.Colored filter rotating disk 215 is to carry out beam split in the mode of rotating.For example, when incident beam 207 exposed to red block 2151 on the colored filter rotating disk 215, the ruddiness in the incident beam 207 can pass through colored filter rotating disk 215, and can export digital micromirror elements 220 to by colored filter rotating disk 215.Green glow in the incident beam 207 and blue light are then because of being reflected by colored filter rotating disk 215.In like manner, when colored filter rotating disk 215 turns to incident beam 207 can shine green block 2152 or blue block 2153 time, green glow in the incident beam 207 or blue light can pass through colored filter rotating disk 215, and can't be by the ruddiness and the blue light of green block 2152, maybe can't therefore will be reflected by the green glow and the ruddiness of blue block 2153 by colored filter rotating disk 215.
The image-forming block of digital light processing projector 200 is a digital micromirror elements 220, reflects the micro mirror (not shown) one to one and have on the digital micromirror elements 220 with screen 290 image slices vegetarian refreshments.When the incident beam 207 that the light-emitting component that comes free fluorescent tube 205 and snoot 210 to form is launched, after 215 beam split of colored filter rotating disk, trichromatic light beam such as red, green, blue can be projected to digital micromirror elements 220.At last, according to the color control of pixel, and the rotation of the reflection micro mirror on the digital micromirror elements 220, make light beam be projected to screen 290 and the generation image.
In above-mentioned traditional LCD projector 100, because of Polarizer 115 can only make incident beam with certain particular phases by and by Polarizer 115 outputs, therefore other incident beams of about 1/2nd then become folded light beam 109 because of reflecting by Polarizer 115, cause the loss of about 1/2nd light beam.In traditional digital light processing projector 200, the light beam of a certain color in the light beam of three kinds of colors is passed through, the light beam of other two kinds of colors becomes folded light beam 209 because of reflecting by colored filter rotating disk 215, so 2/3rds the light beam loss of will having an appointment.
In sum, traditional LCD projector 100 with the common drawback that digital light processing projector 200 has is: quite a high proportion of light beam loss is arranged.For example, LCD projector 100 has 1/2nd light beam loss approximately, and digital light processing projector 200 is then approximately up to the light beam loss that has 2/3rds.The light beam loss of so suitable high level will make that the optical efficiency of projector is not good.
Novel content
Given this, the purpose of this utility model just provides a kind of light source module, in order to effective optical efficiency that improves projector, makes projector can have preferable image projecting quality.
According to above-mentioned purpose, the utility model proposes a kind of light source module that is used for projector, mainly include light-emitting component, optical processing element and reflecting element.Light-emitting component is in order to provide incident beam.The optical processing element then is arranged on the light path of incident beam, the optical processing element can be exported the incident beam of part by the optical processing element and by the optical processing element, and part can't become folded light beam through the optical processing element reflects by the incident beam of optical processing element.Reflecting element is arranged between light-emitting component and the optical processing element, and reflecting element is exported to the optical processing element and by the optical processing element in order to the reflective light beam.Wherein, light-emitting component comprises fluorescent tube and snoot.Fluorescent tube is in order to emission light, and snoot then couples with fluorescent tube, and makes light become incident beam in order to converge light.And reflecting element can be the catoptron with reflective concave surface of semicircle sphere.The optical processing element then can be the Polarizer in the LCD projector, also can be the colored filter rotating disk in the digital light processing projector.
For making above-mentioned purpose of the present utility model, feature and advantage can more obviously be easy to understand,, and elaborate in conjunction with the accompanying drawings below especially exemplified by preferred embodiment:
Description of drawings
Fig. 1 represents the in-built synoptic diagram of traditional LCD projector;
Fig. 2 A represents the in-built synoptic diagram of traditional digital light processing projector;
The front view of colored filter rotating disk among Fig. 2 B presentation graphs 2A;
Fig. 3 represents according to the utility model preferred embodiment, is applied to the light source module synoptic diagram of LCD projector;
Fig. 4 represents according to the utility model preferred embodiment, is applied to the light source module synoptic diagram of digital light processing projector.
Embodiment
With reference to Fig. 3, it represents to be applied to the light source module synoptic diagram of LCD projector according to the utility model preferred embodiment.Light source module 300 mainly includes light-emitting component, Polarizer 315 and the catoptron of being made up of fluorescent tube 305 and snoot 310 318.
Snoot 310 couples with fluorescent tube 305, and snoot 310 makes light become incident beam 307 in order to converge the light of fluorescent tube 305 emissions.315 of Polarizers are arranged on the light path of incident beam 307, with so that part have the incident beam of particular phases can be by Polarizer 315 and by Polarizer 315 output.And have 1/2nd the incident beam that can't penetrate Polarizer 315 to become folded light beam 309 approximately through Polarizer 315 reflections.
The catoptron 318 of reflective concave surface with semicircle sphere is for can modulate quarter-wave catoptron, and catoptron 318 is arranged between light-emitting component (containing fluorescent tube 305 and snoot 310) and the Polarizer 315.The housing concavity place of catoptron 318 has a transmittance section 319, and transmittance section 319 can make incident beam 307 penetrate through reflective mirrors 318 and arrive Polarizer 315.The reflective concave surface with semicircle sphere of catoptron 318 is the phase places in order to modulation folded light beam 309, after making phase change 90 degree of folded light beam 309, the folded light beam 309 that will be changed after the phase place by catoptron 318 reflexes to Polarizer 315 again, folded light beam 309 can penetrate Polarizer 315 and by Polarizer 315 outputs, folded light beam 309 can be utilized by LCD projector.
The utility model is because of being provided with the catoptron 318 that can modulate 1/4th optical wavelength, make originally by Polarizer 315 the reflection loss folded light beam 309 that accounts for incident beam 1/307th 2 can be utilized again.
With reference to Fig. 4, it represents to be applied to the light source module synoptic diagram of digital light processing projector according to the utility model preferred embodiment.Similar to light source module 300, light source module 400 includes light-emitting component, colored filter rotating disk 415 and the catoptron of being made up of fluorescent tube 405 and snoot 410 418.
Colored filter rotating disk 415 in the digital light processing projector is arranged on the light path of the incident beam 407 that light-emitting component (coupled form by fluorescent tube 405 and snoot 410) provided, 415 each incident beams (ruddiness, green glow or blue light) with a kind of color in the three primary colors of colored filter rotating disk pass, and other the two kinds incident beams that can't pass through colored filter rotating disk 415 then become folded light beam 409 through 415 reflections of colored filter rotating disk.
Folded light beam 409 can't be passed through colored filter rotating disk 415, thereby causes nearly 2/3rds light beam loss, makes the optical efficiency of projector not good.Therefore, the utility model is provided with the catoptron 418 that its housing concavity place has the semisphere reflective concave surface of transmittance section 419 415 of light-emitting component and colored filter rotating disks.Transmittance section 419 makes incident beam 407 penetrable catoptrons 418 and exposes to colored filter rotating disk 415, and is utilized by projector by 415 outputs of colored filter rotating disk.The semisphere reflective concave surface of catoptron 418 then in order to reflective light beam 409 to colored filter rotating disk 415, make and originally lose nearly 2/3rds light beam and can penetrate colored filter rotating disk 415, and by being utilized by projector after 415 outputs of colored filter rotating disk.
Optical processing elements such as above-mentioned Polarizer 315 and colored filter rotating disk 415 all have important function in affiliated projector.And the optical processing element in these projectors when handling the incident beam that light-emitting component provided, all can make the incident beam loss of part, makes that the optical efficiency of projector is relatively poor.And the utility model is in LCD projector and digital light processing projector, between light-emitting component and optical processing element, all add one group of reflecting element with catoptron of semisphere reflective concave surface, it can make can't see through the optical processing element, can't be the folded light beam that projector utilized, can after reflexing to the optical processing element, reflecting element be projected the machine utilization again.
Therefore, the light source module that the utility model the foregoing description is disclosed has following advantage at least, and the light beam of loss originally is reused, and makes the optical efficiency of projector can obtain effective raising.
In sum; though the utility model discloses with embodiment; but be not in order to limit the utility model; any those skilled in the art is not in breaking away from essence of the present utility model and scope; can make various changes and retouching, therefore protection domain of the present utility model is defined with accompanying claims.
Claims (10)
1. a light source module is used for a projector, it is characterized in that, comprising: a light-emitting component, and it provides an incident beam; One optical processing element is arranged on the light path of described incident beam, and described optical processing element makes the part incident beam by optical processing element and output, and part can't become a folded light beam through the optical processing element reflects by the incident beam of optical processing element; And a reflecting element, being arranged between light-emitting component and the optical processing element, described reflecting element reflective light beam can and export the folded light beam of part by the optical processing element to the optical processing element.
2. light source module as claimed in claim 1 is characterized in that, described light-emitting component comprises: a fluorescent tube, and it launches a light; And a snoot, coupling with fluorescent tube, described snoot converges light makes light become incident beam.
3. light source module as claimed in claim 1 is characterized in that, described reflecting element is a catoptron, and described catoptron has the reflective concave surface of half spheroidal, described reflective concave surface reflective light beam.
4. light source module as claimed in claim 1 is characterized in that, described optical processing element is a Polarizer.
5. light source module as claimed in claim 1 is characterized in that, described optical processing element is a colored filter rotating disk.
6. a light source module is used for a LCD projector, it is characterized in that, comprising:
One light-emitting component, it provides an incident beam;
One Polarizer is arranged on the light path of incident beam, and described Polarizer makes the part incident beam by Polarizer and output, and part can't become a folded light beam through the Polarizer reflection by the incident beam of Polarizer; And
One catoptron is arranged between light-emitting component and the Polarizer, and catoptron has the reflective concave surface of half spheroidal, and described reflective concave surface reflective light beam can and export folded light beam by Polarizer to Polarizer.
7. light source module as claimed in claim 6 is characterized in that described catoptron is for can modulate the catoptron of 1/4th optical wavelength.
8. light source module as claimed in claim 6 is characterized in that, described light-emitting component comprises: a fluorescent tube, and it launches a light; And a snoot, coupling with fluorescent tube, described snoot converges light makes light become incident beam.
9. a light source module is used for a digital light processing projector, it is characterized in that, comprising:
One light-emitting component, it provides an incident beam;
One colored filter rotating disk, be arranged on the light path of incident beam, described color screen rotating disk makes the part incident beam by colored filter rotating disk and output, and part can't become a folded light beam through the reflection of colored filter rotating disk by the incident beam of colored filter rotating disk; And
One catoptron, be arranged between light-emitting component and the colored filter rotating disk, described catoptron has the reflective concave surface of half spheroidal, and described reflective concave surface reflective light beam makes the partial reflection light beam by colored filter rotating disk and output to the colored filter rotating disk.
10. light source module as claimed in claim 9 is characterized in that described light-emitting component comprises; One fluorescent tube, it launches a light; And a snoot, coupling with described fluorescent tube, described snoot converges light makes light become incident beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03246597 CN2630900Y (en) | 2003-05-23 | 2003-05-23 | Light source module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03246597 CN2630900Y (en) | 2003-05-23 | 2003-05-23 | Light source module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2630900Y true CN2630900Y (en) | 2004-08-04 |
Family
ID=34292631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03246597 Expired - Fee Related CN2630900Y (en) | 2003-05-23 | 2003-05-23 | Light source module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2630900Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102844706A (en) * | 2010-03-26 | 2012-12-26 | 日本电气株式会社 | Illuminating optical system and projector using the same |
-
2003
- 2003-05-23 CN CN 03246597 patent/CN2630900Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102844706A (en) * | 2010-03-26 | 2012-12-26 | 日本电气株式会社 | Illuminating optical system and projector using the same |
| US9063402B2 (en) | 2010-03-26 | 2015-06-23 | Nec Corporation | Illuminating optical system and projector using the same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: QISDA CORPORATION Free format text: FORMER OWNER: BENQ CORP. Effective date: 20100728 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20100728 Address after: China Taiwan Taoyuan County Patentee after: Qisda Corporation Address before: China Taiwan Taoyuan County Patentee before: Benq Corp. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040804 Termination date: 20120523 |