CN104597628A - Light source device based on liquid crystal box and laser display - Google Patents
Light source device based on liquid crystal box and laser display Download PDFInfo
- Publication number
- CN104597628A CN104597628A CN201410850681.0A CN201410850681A CN104597628A CN 104597628 A CN104597628 A CN 104597628A CN 201410850681 A CN201410850681 A CN 201410850681A CN 104597628 A CN104597628 A CN 104597628A
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- China
- Prior art keywords
- laser beam
- color laser
- light
- supply apparatus
- liquid crystal
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133621—Illuminating devices providing coloured light
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133614—Illuminating devices using photoluminescence, e.g. phosphors illuminated by UV or blue light
Abstract
The invention discloses a light source device based on a liquid crystal box and a laser display. The light source device comprises a first laser source, a liquid crystal box, a first fluorescence color wheel group, a second fluorescence color wheel group and a second laser source, wherein the first laser source is used for generating a first-color laser beam; the liquid crystal box is used for converting the first-color laser beam into a first polarized beam or a second polarized beam and outputting the first polarized beam or the second polarized beam, or preventing the first-color laser beam from passing; the first fluorescence color wheel group is used for converting the first polarized beam into a second-color laser beam; the second fluorescence color wheel group is used for converting the second polarized beam into a third-color laser beam; the second laser source is used for generating a first-color laser beam when the liquid crystal box prevents the first-color laser beam from passing; The light source device at least outputs the first-color laser beam, the second-color laser beam and the third-color laser beam sequentially. By virtue of the mode, the light source device has the advantages that the laser beams with three types of colors can be output by the two laser sources, so that the fluorescence color wheel manufacturing difficulty is reduced and the cost is lowered.
Description
Technical field
The present invention relates to display field, field, particularly relate to a kind of light supply apparatus based on liquid crystal cell and laser writer.
Background technology
Laser television utilizes semiconductor laser light resource, produces the light source of continuous laser as color laser TV of red, green, blue three kinds of wavelength, by television signal control tricolor laser scan image.
Wherein, the light-source system of laser television is generally adopt monochromatic laser light source, is then excited by this monochromatic laser light source and is converted to the laser of other two kinds of colors, thus realizing the continuous output of three look laser.The program needs a kind of fluorescence colour wheel with multiple optical function, is controlled the output of three kinds of colors by the ratio and angle being coated with different colours fluorescent powder in fluorescence colour break-up.
But this mode often needs to control accurately the application place of fluorescent powder, gap and shape, makes the manufacture difficulty of fluorescence colour wheel increase; And when there is the problem such as colourity, colour temperature deviation, only having the output adjusting light source by changing fluorescence colour wheel, thus increasing cost.
Summary of the invention
The technical matters that the present invention mainly solves is to provide a kind of light supply apparatus based on liquid crystal cell and laser writer, can be exported the laser beam of three kinds of colors by two LASER Light Source, reduces the manufacture difficulty of fluorescence colour wheel, reduces costs.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: provide a kind of light supply apparatus based on liquid crystal cell, this device comprises: the first LASER Light Source, for generation of the first color laser beam; Liquid crystal cell, for the first color laser beam being converted into the first light beam or the output of the second light beam, or stops the first color laser beam to pass through; First iridescent wheels, for being converted into the second color laser beam by the first polarization light beam; Second iridescent wheels, for being converted into the 3rd color laser beam by the second polarization light beam; Polarization beam apparatus, for the first polarized light being projected to the first iridescent wheels after reception first polarized light or the second polarized light, or is projected to the second iridescent wheels by the second polarized light; Second LASER Light Source, for stop at liquid crystal cell the first color laser beam by time produce the 4th color laser beam; Light supply apparatus exports the second color laser beam, the 3rd color laser beam and the 4th color laser beam at least successively.
Wherein, light supply apparatus also comprises voltage driver; Voltage driver connects liquid crystal cell, under the first driving voltage, the first color laser beam is converted into the first light beam to make liquid crystal cell for alternately inputting different driving voltage to liquid crystal cell, or under the second driving voltage, the first color laser beam is converted into the second light beam, or under zero driving voltage, the first color laser beam is stoped to pass through.
Wherein, voltage driver also for control inputs to time of the different driving voltage of liquid crystal cell.
Wherein, the first voltage is positive voltage, and the second voltage is negative voltage.
Wherein, light supply apparatus also comprises polarization beam apparatus; Polarization beam apparatus is used for, after reception first polarized light or the second polarized light, the first polarized light is projected to the first iridescent wheels, or the second polarized light is projected to the second iridescent wheels.
Wherein, light supply apparatus also comprises catoptron, the first dichroic mirror and the second dichroic mirror; Catoptron is for reflecting the 3rd color laser beam, first dichroic mirror is for reflecting the 3rd color laser beam and transmission the 4th color laser beam, and the second dichroic mirror is for reflecting the 3rd color laser beam and the 4th color laser beam and transmission second color laser beam.
Wherein, the first iridescent wheels comprise the first focus lens group, the first fluorescence colour wheel and the first collimation lens set; Second iridescent wheels comprise the second focus lens group, the second fluorescence colour wheel and the second collimation lens set.
Wherein, the first color laser beam, the second color laser beam and the 3rd color laser beam are respectively the one in red, green, blue.
Wherein, the first color laser beam is identical with the 4th color laser beam color.
For solving the problems of the technologies described above, another technical solution used in the present invention is: provide a kind of laser writer, and this laser writer at least comprises display panel and light supply apparatus; Wherein, light supply apparatus is light supply apparatus described above.
The invention has the beneficial effects as follows: the situation being different from prior art, first color laser conversion is have the light of different polarization performance and timesharing exports by liquid crystal cell by the present invention, the fluorescence colour wheel with different wave length translation function is projected to again respectively being the second color and the 3rd color laser by this first color laser conversion by polarization beam apparatus, again by increase the 4th color LASER Light Source to export the 4th color laser, then at least timesharing can input the second color laser, the 3rd color laser and the 4th color laser; Wherein, because each fluorescence colour wheel only needs to change a kind of color, namely each fluorescence colour wheel only needs the fluorescent powder applying a kind of color, avoids the problem that the multiple fluorescent powder of coating causes complex process, also reduces the probability that fluorescence colour wheel damages, reduce cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of light supply apparatus first embodiment that the present invention is based on liquid crystal cell;
Fig. 2 is the structural representation of light supply apparatus second embodiment that the present invention is based on liquid crystal cell;
Fig. 3 is the output voltage wave schematic diagram of voltage driver in light supply apparatus second embodiment that the present invention is based on liquid crystal cell;
Fig. 4 is the structural representation of laser writer embodiment of the present invention.
Embodiment
Consult Fig. 1, the present invention is based on the structural representation of light supply apparatus first embodiment of liquid crystal cell, this light supply apparatus comprises:
First LASER Light Source 101, for generation of the first color laser beam 111; Liquid crystal cell 103, for the first color laser beam 111 being converted into the first light beam 121 or the second light beam 122 exports, or stops the first color laser beam 111 to pass through; First iridescent wheels 105, for being converted into the second color laser beam 112 by the first polarization light beam 121; Second iridescent wheels 106, for being converted into the 3rd color laser beam 113 by the second polarization light beam 122; Polarization beam apparatus 104, for first polarized light 121 being projected to the first iridescent wheels 105 after reception first polarized light 121 or the second polarized light 122, or is projected to the second iridescent wheels 106 by the second polarized light 122; Second LASER Light Source 102, for stop at liquid crystal cell 103 first color laser beam 111 by time produce the 4th color laser beam 114; Light supply apparatus exports the second color laser beam 112, the 3rd color laser beam 113 and the 4th color laser beam 114 at least successively.
Wherein, the first LASER Light Source 101 and the second LASER Light Source 102 are generally semiconductor laser light resources, also can be other Solid State Laser sources, gas laser source or liquid laser source etc.
Because liquid crystal has twisted-nematic facies pattern electrooptical effect, certain driving voltage is applied to liquid crystal cell 103, the long axis direction of the liquid crystal molecule in liquid crystal cell 103 can be made to start to tilt along direction of an electric field, when the driving voltage applied is different, the major axis vergence direction of liquid crystal molecule is different, cause the transmittance of liquid crystal cell 103 to change, the first color laser beam 111 is converted into the light with different polarization performance.Therefore, when sequentially applying different voltage to liquid crystal cell 103, the first color laser beam 111 is converted into the first polarized light 121 and the second polarized light 122 with regard to energy sequential by liquid crystal cell 103 successively.
Polarization beam apparatus 104 can allow the light of different polarization performance reflect or transmission, and its inside can be set up corresponding catoptron and propagate along the direction of anticipation to make light path.
Fluorescent powder color wheel in first iridescent wheels 105 and the second iridescent wheels 106 applies the second color fluorescence powder and the 3rd color fluorescence powder respectively, is converted into the second color laser 112 and the 3rd color laser 113 in order to first polarized light 121 and the second polarized light 122 with the first color to be excited respectively.
Be different from prior art, first color laser conversion is have the light of different polarization performance and timesharing exports by liquid crystal cell by present embodiment, the fluorescence colour wheel with different wave length translation function is projected to again respectively being the second color and the 3rd color laser by this first color laser conversion by polarization beam apparatus, again by increase the 4th color LASER Light Source to export the 4th color laser, then at least timesharing can input the second color laser, the 3rd color laser and the 4th color laser; Wherein, because each fluorescence colour wheel only needs to change a kind of color, namely each fluorescence colour wheel only needs the fluorescent powder applying a kind of color, avoids the problem that the multiple fluorescent powder of coating causes complex process, also reduces the probability that fluorescence colour wheel damages, reduce cost.
Consult Fig. 2, the present invention is based on the structural representation of light supply apparatus second embodiment of liquid crystal cell, this light supply apparatus comprises:
First LASER Light Source 201, for generation of the first color laser beam 111; Liquid crystal cell 203, for the first color laser beam 111 being converted into the first light beam 121 or the second light beam 122 exports, or stops the first color laser beam 111 to pass through; First iridescent wheels 205, for being converted into the second color laser beam 112 by the first polarization light beam 121; Second iridescent wheels 206, for being converted into the 3rd color laser beam 113 by the second polarization light beam 122; Polarization beam apparatus 204, for first polarized light 121 being projected to the first iridescent wheels 205 after reception first polarized light 121 or the second polarized light 122, or is projected to the second iridescent wheels 206 by the second polarized light 122; Second LASER Light Source 202, for stop at liquid crystal cell 203 first color laser light 111 restraint by time produce the 4th color laser beam 114; Light supply apparatus exports the second color laser beam 112, the 3rd color laser beam 113 and the 4th color laser beam 114 at least successively.
Wherein, light supply apparatus also comprises voltage driver 207; Voltage driver 207 connects liquid crystal cell 203, under the first driving voltage, the first color laser beam 111 is converted into the first light beam 121 to make liquid crystal cell 203 for alternately inputting different driving voltage to liquid crystal cell 203, or under the second driving voltage, the first color laser beam 111 is converted into the second light beam 122, or under zero driving voltage, the first color laser beam is stoped to pass through.
Wherein, voltage driver 207 also for control inputs to time of the different driving voltage of liquid crystal cell.
Wherein, the first voltage is positive voltage, and the second voltage is negative voltage.
As shown in Figure 3, in the t1 time period, voltage driver 207 inputs+v voltage, to make liquid crystal cell 203, first color laser beam 111 is converted into the first light beam 121, in the t2 time period, voltage driver 207 inputs-v voltage, to make liquid crystal cell 203, first color laser beam 111 is converted into the second light beam 122, input no-voltage in the t3 moment, stop the first color laser beam 111 to pass through to make liquid crystal cell 203.
In addition, light supply apparatus also comprises catoptron 223, first dichroic mirror 221 and the second dichroic mirror 222; Catoptron 223 is for reflecting the 3rd color laser beam 113, first dichroic mirror 221 is for reflecting the 3rd color laser beam 113 transmission the 4th color laser beam 114, second dichroic mirror 222 for reflecting the 3rd color laser beam 113 and the 4th color laser beam 114 and transmission second color laser beam 112.
Wherein, the first iridescent wheels 205 comprise the first focus lens group 2051, first fluorescence colour wheel and the first collimation lens set 2052; Second iridescent wheels 206 comprise the second focus lens group 2061, second fluorescence colour wheel and the second collimation lens set 2062.
In addition, the first color laser beam 111, second color laser beam 112 and the 3rd color laser beam 113 are respectively the one in red, green, blue; First color laser beam 111 is identical with the 4th color laser beam 114 color.
Concrete, LASER Light Source 201 is a blue semiconductor laser, and the light beam 111 that it sends, when liquid crystal cell 203, is converted into p light 121 or s light 122.P light 121 transmission that liquid crystal cell 203 exports by polarization beam apparatus 204, s light 122 reflects, thus by p light 121 and s light 122 light splitting in different light paths.P light 121 is beaten on fluorescence colour wheel after collector lens group 2051, and inspires ruddiness 112.S light 122 is beaten on fluorescence colour wheel after collector lens group 2061, inspires green glow 113.Semiconductor laser 202 is the blue laser of a pulsed.Dichroic mirror 221 transmit blue 114, reflect green light 113, dichroic mirror 222, transmit red light 112, reflect green light 113 and blue light 114, then can order output ruddiness 112, green glow 113, blue light 114 3 look laser.
It should be noted that, in present embodiment, the light beam that LASER Light Source sends can also be ruddiness or green glow.
Be different from prior art, first color laser conversion is have the light of different polarization performance and timesharing exports by liquid crystal cell by present embodiment, the fluorescence colour wheel with different wave length translation function is projected to again respectively being the second color and the 3rd color laser by this first color laser conversion by polarization beam apparatus, again by increase the 4th color LASER Light Source to export the 4th color laser, then at least timesharing can input the second color laser, the 3rd color laser and the 4th color laser; Wherein, because each fluorescence colour wheel only needs to change a kind of color, namely each fluorescence colour wheel only needs the fluorescent powder applying a kind of color, avoids the problem that the multiple fluorescent powder of coating causes complex process, also reduces the probability that fluorescence colour wheel damages, reduce cost.
Consult Fig. 4, the structural representation of laser writer embodiment of the present invention, this laser writer comprises display panel 401 and light supply apparatus 402;
Wherein, this light supply apparatus is the light supply apparatus in embodiment described above, and its embodiment is similar, repeats no more here.
The foregoing is only embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize instructions of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (9)
1. based on a light supply apparatus for liquid crystal cell, it is characterized in that, described light supply apparatus comprises:
First LASER Light Source, for generation of the first color laser beam;
Liquid crystal cell, for described first color laser beam being converted into the first light beam or the output of the second light beam, or stops described first color laser beam to pass through;
First iridescent wheels, for being converted into the second color laser beam by described first polarization light beam;
Second iridescent wheels, for being converted into the 3rd color laser beam by described second polarization light beam;
Polarization beam apparatus, for described first polarized light being projected to described first iridescent wheels after described first polarized light of reception or the second polarized light, or is projected to described second iridescent wheels by described second polarized light;
Second LASER Light Source, for stop at described liquid crystal cell described first color laser beam by time produce described 4th color laser beam;
Described light supply apparatus exports described second color laser beam, the 3rd color laser beam and the 4th color laser beam at least successively.
2. light supply apparatus according to claim 1, is characterized in that, described light supply apparatus also comprises voltage driver;
Described voltage driver connects described liquid crystal cell, under the first driving voltage, described first color laser beam is converted into the first light beam to make described liquid crystal cell for alternately inputting different driving voltage to described liquid crystal cell, or under the second driving voltage, described first color laser beam is converted into the second light beam, or under zero driving voltage, described first color laser beam is stoped to pass through.
3. light supply apparatus according to claim 2, is characterized in that, described voltage driver also for control inputs to time of different driving voltage of described liquid crystal cell.
4. light supply apparatus according to claim 2, is characterized in that, described first voltage is positive voltage, and described second voltage is negative voltage.
5. light supply apparatus according to claim 1, is characterized in that, described light supply apparatus also comprises catoptron, the first dichroic mirror and the second dichroic mirror;
Described catoptron is for reflecting described 3rd color laser beam, described first dichroic mirror is for reflecting described 3rd color laser beam and the 4th color laser beam described in transmission, and described second dichroic mirror is for reflecting described 3rd color laser beam and described 4th color laser beam and the second color laser beam described in transmission.
6. light supply apparatus according to claim 1, is characterized in that, described first iridescent wheels comprise the first focus lens group, the first fluorescence colour wheel and the first collimation lens set;
Described second iridescent wheels comprise the second focus lens group, the second fluorescence colour wheel and the second collimation lens set.
7. the light supply apparatus according to any one of claim 1 to 6, is characterized in that, described second color laser beam, the 3rd color laser beam and the 4th color laser beam are respectively the one in red, green, blue.
8. light supply apparatus according to claim 7, is characterized in that, described first color laser beam is identical with the 4th color laser beam color.
9. a laser writer, is characterized in that, described laser writer at least comprises display panel and light supply apparatus;
Wherein said light supply apparatus is the light supply apparatus according to any one of claim 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410850681.0A CN104597628A (en) | 2014-12-30 | 2014-12-30 | Light source device based on liquid crystal box and laser display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410850681.0A CN104597628A (en) | 2014-12-30 | 2014-12-30 | Light source device based on liquid crystal box and laser display |
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| Publication Number | Publication Date |
|---|---|
| CN104597628A true CN104597628A (en) | 2015-05-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410850681.0A Pending CN104597628A (en) | 2014-12-30 | 2014-12-30 | Light source device based on liquid crystal box and laser display |
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| CN (1) | CN104597628A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1101987A (en) * | 1993-10-19 | 1995-04-26 | 葛晓勤 | Driving method for liquid crystal display unit |
| CN2727770Y (en) * | 2004-07-26 | 2005-09-21 | 中国科学院物理研究所 | Laser color display device made by red, green, blue laser |
| CN1862337A (en) * | 2006-06-12 | 2006-11-15 | 宁波思达利光电科技有限公司 | Optical module for liquid crystal display and liquid crystal display |
| CN103713455A (en) * | 2012-09-28 | 2014-04-09 | 深圳市绎立锐光科技开发有限公司 | Light source system and related projection system |
| CN203745788U (en) * | 2014-01-03 | 2014-07-30 | 深圳市亿思达显示科技有限公司 | Dual laser light source system |
| CN203745790U (en) * | 2014-01-03 | 2014-07-30 | 深圳市亿思达显示科技有限公司 | Dual laser light source system |
-
2014
- 2014-12-30 CN CN201410850681.0A patent/CN104597628A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1101987A (en) * | 1993-10-19 | 1995-04-26 | 葛晓勤 | Driving method for liquid crystal display unit |
| CN2727770Y (en) * | 2004-07-26 | 2005-09-21 | 中国科学院物理研究所 | Laser color display device made by red, green, blue laser |
| CN1862337A (en) * | 2006-06-12 | 2006-11-15 | 宁波思达利光电科技有限公司 | Optical module for liquid crystal display and liquid crystal display |
| CN103713455A (en) * | 2012-09-28 | 2014-04-09 | 深圳市绎立锐光科技开发有限公司 | Light source system and related projection system |
| CN203745788U (en) * | 2014-01-03 | 2014-07-30 | 深圳市亿思达显示科技有限公司 | Dual laser light source system |
| CN203745790U (en) * | 2014-01-03 | 2014-07-30 | 深圳市亿思达显示科技有限公司 | Dual laser light source system |
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Application publication date: 20150506 |