CN109473863A - A kind of multiple bases laser display apparatus based on wavelength-tuned laser - Google Patents
A kind of multiple bases laser display apparatus based on wavelength-tuned laser Download PDFInfo
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- CN109473863A CN109473863A CN201910021989.7A CN201910021989A CN109473863A CN 109473863 A CN109473863 A CN 109473863A CN 201910021989 A CN201910021989 A CN 201910021989A CN 109473863 A CN109473863 A CN 109473863A
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- laser
- wavelength
- mould group
- light source
- light
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/10007—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating in optical amplifiers
-
- 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
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2013—Plural light sources
-
- 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
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2033—LED or laser light sources
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
- H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
- H01S3/0941—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light of a laser diode
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/106—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling devices placed within the cavity
- H01S3/108—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling devices placed within the cavity using non-linear optical devices, e.g. exhibiting Brillouin or Raman scattering
- H01S3/109—Frequency multiplication, e.g. harmonic generation
Abstract
The invention discloses a kind of multiple bases laser display apparatus based on wavelength-tuned laser, including tunable green laser light source module group, the red blue laser light source mould group of multi-wavelength, RGB shimming eliminating coherence mould group, first reflecting mirror, second reflecting mirror, RGB spatial light modulator, timing modulation mould group, close beam mould group, projection lens and screen, the tunable green laser light source module group utilizes 1.0 mu m waveband wavelength tuning laser light sources, tunable green-light source is obtained by amplification and frequency multiplication, structure of the invention is scientific and reasonable, it is safe and convenient to use, the tunable green laser light source module group that the present apparatus includes can according to need the wavelength number of Configuration Online green light tuning, the parameter in length scanning tuning period and watt level, it is very few to compensate for existing green (light) laser type, power and wavelength cannot tune not in the online period Foot is suitable for laser display field.
Description
Technical field
The present invention relates to laser projection display technology field, specially a kind of multiple bases based on wavelength-tuned laser swash
Electro-optical display device.
Background technique
Laser display technology is broad with its colour gamut, brightness is high, saturation degree is high and can more true reappearance nature it is colourful
The advantages that colorful color world, is increasingly subject to the concern of people, and tricolor laser display technology uses red-green-blue laser
As display light source, unprecedented display colour gamut may be implemented, it is pendent for a long time to solve field of display technology
The problem of big colour gamut color rendering, but tricolor laser shows that system also fails to the colour gamut advantage for sufficiently excavating laser display,
Therefore it needs more truly to reproduce rich and varied, the multiple bases laser of natural world using multiple bases laser display New System
It shows that system can be with further expansion color domain coverage ratio, and speckle contrast can be reduced, be laser display one important
Developing direction can also be combined with stereo projection display, be had broad application prospects, at present laser display light source mainly by
Semiconductor laser provides, it is seen that light laser is more slow compared to the laser developments of communication band and 1.0 mu m wavebands, especially
It is that green (light) laser is even more wretched insufficiency, and wavelength tunes difficulty online, hinders the further development of laser display, so, people
Be badly in need of a kind of novel multiple bases laser display apparatus based on wavelength-tuned laser to solve the above problems.
Summary of the invention
The present invention provides a kind of multiple bases laser display apparatus based on wavelength-tuned laser, can effectively solve above-mentioned
The problem of being proposed in background technique.It obtains tunable green by amplification and frequency multiplication with 1.0 mu m waveband wavelength-tuned lasers
Laser and multi-wavelength is red, blue semiconductor laser forms multiple bases display light source, can according to need the tuning of Configuration Online green light
Wavelength number, the parameter in length scanning tuning period and watt level, compensate for that existing green (light) laser type is very few, power
The problem of cannot being tuned in the online period with wavelength.
To achieve the above object, the invention provides the following technical scheme: a kind of multiple bases based on wavelength-tuned laser
Laser display apparatus, including tunable green laser light source module group, multi-wavelength red laser light source module group, multi-wavelength blue laser
Light source module group, feux rouges shimming eliminating coherence mould group, green light shimming eliminating coherence mould group, blue light shimming eliminating coherence mould group, the first reflecting mirror,
Second reflecting mirror, green light spatial light modulator, blue light spatial light modulator, timing modulation mould group, closes feux rouges spatial light modulator
Beam mould group, projection lens and screen, the multi-wavelength red laser light source module group side are connected with feux rouges shimming eliminating coherence mould group,
The feux rouges shimming eliminating coherence mould group side is connected with the first reflecting mirror, and first reflecting mirror is connected with the light modulation of feux rouges space
Device, the feux rouges spatial light modulator, which is connected with, closes beam mould group, and the 1.0 mu m waveband wavelength-tuned laser side is connected with sharp
Image intensifer, the laser amplifier side are connected with frequency doubling device, and the frequency doubling device side is connected with green light shimming and disappears phase
Dry mould group, the green light shimming eliminating coherence mould group side are connected with green light spatial light modulator, the green light spatial light modulator
Side, which is connected with, closes beam mould group, and the multi-wavelength blue laser light source module group side is connected with blue light shimming eliminating coherence mould group, institute
It states blue light shimming eliminating coherence mould group side and is connected with the second reflecting mirror, second reflecting mirror is connected with the light modulation of blue light space
Device, the blue light spatial light modulator, which is connected with, closes beam mould group, and the timing modulation Mo Zu is connected with multi-wavelength feux rouges respectively and swashs
It is radiant mould group, 1.0 mu m waveband wavelength-tuned lasers, multi-wavelength blue laser light source module group, feux rouges spatial light modulator, green
Light spatial light modulator and blue light spatial light modulator, the conjunction beam mould group side are connected with projection lens, the projection lens
Side is connected with screen.
Preferably, the tunable green laser light source module group includes wavelength tuning laser light source, the laser of 1.0 mu m wavebands
Amplifier and frequency doubling device, the wavelength tuning laser light source issue fundamental frequency light, are amplified to required power by laser amplifier,
Then wavelength tuning frequency doubling green light is obtained by frequency doubling device, as multiple bases display light source.
Preferably, the mode that the wavelength tuning laser light source can be tuned by semiconductor electric current tuning and optical fiber laser
It realizes, the wavelength tuning laser light source can according to need the parameter of configuration wavelength number and scan period.
Preferably, the laser amplifier is not limited to fiber amplifier, and the laser amplifier includes N number of semiconductor pumped
Source, pump combiner, Yb dosed optical fiber, the first isolator and the second isolator, the laser amplifier is for amplifying 1.0 mu m wavebands
Tunable fundamental frequency light, the laser amplifier can be with Configuration Online amplifying power parameter.
Preferably, the frequency doubling device is broadband SHG crystal, and the broadband SHG crystal has temperature control device, the width
Band frequency-doubling crystal is lithium triborate crystal, and the temperature control device is the semiconductor chilling plate and hot stove using feedback control.
Preferably, red, the blue semiconductor laser that the multi-wavelength is red, blue laser light source mould group includes periodic arrangement
Red, the blue laser center wavelength in source, red, the blue semiconductor laser light resource output of the periodic arrangement is different.
Preferably, the timing modulation mould group controls spatial light modulator and laser light source mould group according to the signal of input,
The timing modulation mould group directly controls the driving signal of laser light source mould group, modulates laser light source mould group pulse output mode,
The spatial light modulator is digital micro mirror element, and beam is closed after being modulated by spatial light modulator and enters projection lens acquisition laser
Show image.
Compared with prior art, beneficial effects of the present invention: structure of the invention is scientific and reasonable, safe and convenient to use:
1, by the scheme of scanning tuning, the deficiency of existing green (light) laser type is compensated for, is provided a kind of tunable
Green light multiple bases display light source.
2, tunable green light display light source can according to need the wavelength number of Configuration Online green light tuning, length scanning tune
The parameter in humorous period and watt level, facilitates and obtains multiple green primaries, really realizes that multiple bases are shown.
3, multiple bases laser light source improves color domain coverage ratio, so that display image is more realistically reproduced nature more
The colorful color world of appearance.
4, multiple bases laser display can reduce speckle contrast, obtain better due to using multiple bases laser light source
Display effect.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, with reality of the invention
It applies example to be used to explain the present invention together, not be construed as limiting the invention.
In the accompanying drawings:
Fig. 1 is a kind of multiple bases laser display apparatus schematic diagram based on wavelength-tuned laser of the present invention；
Fig. 2 is laser amplifier schematic diagram in the tunable green laser light source module group of the present invention；
Figure label: 1, multi-wavelength red laser light source module group；2, tunable green laser light source module group；201,1.0μm
Band wavelength tuned laser；202, laser amplifier；203, frequency doubling device；3, multi-wavelength blue laser light source module group；4, red
Light shimming eliminating coherence mould group；5, green light shimming eliminating coherence mould group；6, blue light shimming eliminating coherence mould group；7, the first reflecting mirror；8,
Two-mirror；9, feux rouges spatial light modulator；10, green light spatial light modulator；11, blue light spatial light modulator；12, timing tune
Molding group；13, beam mould group is closed；14, projection lens；15, screen；16, the first isolator；17, the second isolator；18, first
Semiconductor pumping sources；19, second semiconductor pumping sources；20, third semiconductor pumping sources；21, the 4th it is semiconductor pumped
Source；22, the N-1 semiconductor pumping sources；23, n-th semiconductor pumping sources；24, pump combiner；25, Yb dosed optical fiber.
Specific embodiment
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein
Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
Embodiment: as shown in Figs. 1-2, the present invention provides a kind of technical solution, a kind of based on the more of wavelength-tuned laser
Primary color laser display device, including multi-wavelength red laser light source module group 1, tunable green laser light source module group 2, multi-wavelength are blue
Ray laser light source module group 3, feux rouges shimming eliminating coherence mould group 4, green light shimming eliminating coherence mould group 5, blue light shimming eliminating coherence mould group 6,
First reflecting mirror 7, the second reflecting mirror 8, feux rouges spatial light modulator 9, green light spatial light modulator 10, blue light spatial light modulator
11, timing modulation mould group 12, conjunction beam mould group 13, projection lens 14 and screen 15, tunable green laser light source module group 2 include
1.0 mu m waveband wavelength-tuned lasers 201, laser amplifier 202 and frequency doubling device 203.
1.0 mum wavelength tuning laser light sources 201 issue 1.0 mu m waveband fundamental frequency lights, are amplified to institute by laser amplifier 202
Power is needed, then obtains wavelength tuning frequency doubling green light by frequency doubling device 203, shows green light source, wavelength tune as multiple bases
Humorous laser light source can be realized by the mode that semiconductor electric current tuning and optical fiber laser tune, and can according to need configuration wavelength
Number and scan period parameter, 202 amplification mode of laser amplifier are not limited to fiber amplifier, can be with Configuration Online amplifying power
Parameter, the present embodiment use fiber amplifier mode, and fiber amplifier includes the first isolator 16, the second isolator 17, first half
18, second semiconductor pumping sources 19 of conductor pumping source, third semiconductor pumping sources 20, the 4th semiconductor pumping sources 21,
The N-1 semiconductor pumping sources 22, n-th semiconductor pumping sources 23, pump combiner 24 and Yb dosed optical fiber 25, the first isolator
16 and second isolator 17 be make light transmission have single phase property, prevent light to be reflected back prototype part, first semiconductor pumping sources
18, it partly leads for second semiconductor pumping sources 19, third semiconductor pumping sources 20, the 4th semiconductor pumping sources 21, N-1
Pump light is input to Yb dosed optical fiber 25 by pump combiner 24 by body pumping source 22 and n-th semiconductor pumping sources 23, is completed
Amplification to 1.0 mu m waveband signal lights, amplified fundamental frequency light are input to frequency doubling device 203, mainly by having temperature control device
Broadband SHG crystal lithium triborate crystal (LBO) composition, obtain tunable frequency doubling green light, tuned speed and timing modulation mould
The timing control time of group 12 matches.
Tunable green laser light source module group 2 and multi-wavelength red laser light source module group 1 and multi-wavelength blue laser light source
The light source that mould group 3 is shown as multiple bases, multi-wavelength red laser light source module group 1 and multi-wavelength blue laser light source module group 3 are wrapped
The red blue laser center wavelength difference for including its output of red, the blue semiconductor laser light resource of periodic arrangement, then respectively by red
Light shimming eliminating coherence mould group 4, green light shimming eliminating coherence mould group 5 and blue light shimming eliminating coherence mould group 6, while realizing to light beam shimming
Speckle caused by the time and spatial coherence of shaping and inhibition laser, then red blue laser is by the first reflecting mirror 7 and second
The necessary optical transmission components such as reflecting mirror 8 change transmission direction, so that RGB laser all passes through feux rouges spatial light modulator
9, green light spatial light modulator 10 and blue light spatial light modulator 11, feux rouges spatial light modulator 9, green light spatial light modulator 10
With blue light spatial light modulator 11 by timing modulation mould group 12 according to the control of external input signal, furthermore timing modulation mould group 12
The driving signal of laser light source mould group is also directly controlled, laser light source mould group pulse output mode is modulated, modulated light enters
Beam mould group 13 is closed, X prism, dichronic mirror and a variety of conjunction beam schemes of fiber coupling can be used by closing beam, and the present embodiment is using X prism
Beam is closed, display image is ultimately formed, is incident on projection lens 14, project screen 15.
The present invention compensates for the deficiency of existing green (light) laser type, providing one kind can by the scheme of scanning tuning
The green light multiple bases display light source of tuning, tunable green light display light source can according to need the wavelength of Configuration Online green light tuning
Number, the parameter in length scanning tuning period and watt level, facilitate and obtain multiple green primaries, really realize that multiple bases are aobvious
Show, multiple bases laser light source improves color domain coverage ratio, so that display image is more realistically reproduced nature colourful
The color world, multiple bases laser display can reduce speckle contrast, obtain better due to using multiple bases laser light source
Display effect.
Finally, it should be noted that being not intended to restrict the invention the foregoing is merely preferred embodiment of the invention, to the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, for those skilled in the art, still can be with
It modifies the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features.It is all
Within the spirit and principles in the present invention, any modification, equivalent replacement, improvement and so on should be included in guarantor of the invention
Within the scope of shield.
Claims (7)
1. a kind of multiple bases laser display apparatus based on wavelength-tuned laser, it is characterised in that: swash including tunable green light
Radiant mould group, multi-wavelength red laser light source module group, multi-wavelength blue laser light source module group, feux rouges shimming eliminating coherence mould group,
Green light shimming eliminating coherence mould group, blue light shimming eliminating coherence mould group, the first reflecting mirror, the second reflecting mirror, feux rouges spatial light modulator,
Green light spatial light modulator, timing modulation mould group, closes beam mould group, projection lens and screen at blue light spatial light modulator, described more
Wavelength red laser light source module group side is connected with feux rouges shimming eliminating coherence mould group, and feux rouges shimming eliminating coherence mould group side connects
It is connected to the first reflecting mirror, first reflecting mirror is connected with feux rouges spatial light modulator, the feux rouges spatial light modulator connection
Have and close beam mould group, the 1.0 mu m waveband wavelength-tuned laser side is connected with laser amplifier, the laser amplifier side
It is connected with frequency doubling device, the frequency doubling device side is connected with green light shimming eliminating coherence mould group, the green light shimming eliminating coherence mould
Group side is connected with green light spatial light modulator, and green light spatial light modulator side, which is connected with, closes beam mould group, more waves
Long blue laser light source module group side is connected with blue light shimming eliminating coherence mould group, the connection of blue light shimming eliminating coherence mould group side
There is the second reflecting mirror, second reflecting mirror is connected with blue light spatial light modulator, and the blue light spatial light modulator is connected with
Beam mould group is closed, the timing modulation Mo Zu is connected with multi-wavelength red laser light source module group respectively, 1.0 mu m waveband wavelength tunings swash
Light device, multi-wavelength blue laser light source module group, feux rouges spatial light modulator, green light spatial light modulator and the light modulation of blue light space
Device, the conjunction beam mould group side are connected with projection lens, and the projection lens side is connected with screen.
2. a kind of multiple bases laser display apparatus based on wavelength-tuned laser according to claim 1, feature exist
In: the tunable green laser light source module group includes wavelength tuning laser light source, laser amplifier and the frequency multiplication of 1.0 mu m wavebands
Device, the wavelength tuning laser light source issue fundamental frequency light, are amplified to required power by laser amplifier, then pass through frequency multiplication
Device obtains wavelength tuning frequency doubling green light, as multiple bases display light source.
3. a kind of multiple bases laser display apparatus based on wavelength-tuned laser according to claim 2, feature exist
It can be realized by the mode that semiconductor electric current tuning and optical fiber laser tune in: the wavelength tuning laser light source, the wave
Long tuning laser light source can according to need the parameter of configuration wavelength number and scan period.
4. a kind of multiple bases laser display apparatus based on wavelength-tuned laser according to claim 2, feature exist
In: the laser amplifier is not limited to fiber amplifier, and the laser amplifier includes N number of semiconductor pumping sources, pumping conjunction beam
Device, Yb dosed optical fiber, the first isolator and the second isolator, the laser amplifier are used to amplify the tunable base of 1.0 mu m wavebands
Frequency light, the laser amplifier can be with Configuration Online amplifying power parameters.
5. a kind of multiple bases laser display apparatus based on wavelength-tuned laser according to claim 2, feature exist
In: the frequency doubling device is broadband SHG crystal, and the broadband SHG crystal has temperature control device, and the broadband SHG crystal is
Lithium triborate crystal, the temperature control device are the semiconductor chilling plate and hot stove using feedback control.
6. a kind of multiple bases laser display apparatus based on wavelength-tuned laser according to claim 1, feature exist
In: the multi-wavelength, red, blue laser light source mould group includes periodically arranging described in red, the blue semiconductor laser light resource of periodic arrangement
Red, the blue laser center wavelength of red, the blue semiconductor laser light resource output of cloth is different.
7. a kind of multiple bases laser display apparatus based on wavelength-tuned laser according to claim 1, feature exist
In: the timing modulation mould group controls spatial light modulator and laser light source mould group, the timing modulation according to the signal of input
Mould group directly controls the driving signal of laser light source mould group, modulates laser light source mould group pulse output mode, the spatial light tune
Device processed is digital micro mirror element, and beam is closed after being modulated by spatial light modulator and enters projection lens acquisition laser display image.
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| CN201910021989.7A CN109473863A (en) | 2019-01-10 | 2019-01-10 | A kind of multiple bases laser display apparatus based on wavelength-tuned laser |
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| CN201910021989.7A CN109473863A (en) | 2019-01-10 | 2019-01-10 | A kind of multiple bases laser display apparatus based on wavelength-tuned laser |
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