CN209200366U - 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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- CN209200366U CN209200366U CN201920037761.2U CN201920037761U CN209200366U CN 209200366 U CN209200366 U CN 209200366U CN 201920037761 U CN201920037761 U CN 201920037761U CN 209200366 U CN209200366 U CN 209200366U
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Abstract
The utility model 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, the utility model is scientific and reasonable for structure, 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 the online period The deficiency of tuning is suitable for laser display field.
Description
Technical field
The utility model relates to laser projection display technology field, specially a kind of more bases based on wavelength-tuned laser
Color laser display apparatus.
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 and light laser is more slow compared to the laser developments of communication band and 1.0 mu m wavebands,
Especially green (light) laser is even more wretched insufficiency, and wavelength tunes difficulty online, hinders the further development of laser display, so,
People are badly in need of the novel multiple bases laser display apparatus based on wavelength-tuned laser of one kind to solve the above problems.
Utility model content
The utility model provides a kind of multiple bases laser display apparatus based on wavelength-tuned laser, can effectively solve
The problems mentioned above in the background art.It is obtained with 1.0 mu m waveband wavelength-tuned lasers by amplification and frequency multiplication tunable
Green laser and multi-wavelength is red, blue semiconductor laser forms multiple bases display light source, can according to need Configuration Online green light
The wavelength number of tuning, the parameter in length scanning tuning period and watt level, compensate for existing green (light) laser type it is very few,
The problem of power and wavelength cannot tune in the online period.
To achieve the above object, the utility model provides the following technical solutions: a kind of based on the more of wavelength-tuned laser
Primary color laser display device, including tunable green laser light source module group, multi-wavelength red laser light source module group, multi-wavelength blue light
Laser light source mould group, feux rouges shimming eliminating coherence mould group, green light shimming eliminating coherence mould group, blue light shimming eliminating coherence mould group, first are instead
Penetrate mirror, the second reflecting mirror, feux rouges spatial light modulator, green light spatial light modulator, blue light spatial light modulator, timing modulation mould
Group closes beam mould group, projection lens and screen；
The tunable green laser light source module group includes wavelength tuning laser light source, the laser amplifier of 1.0 mu m wavebands
And frequency doubling device, the wavelength tuning laser light source issue fundamental frequency light, are amplified to required power by laser amplifier, then pass through
It crosses frequency doubling device and obtains wavelength tuning frequency doubling green light, as multiple bases display light source；
The multi-wavelength red laser light source module group side is connected with feux rouges shimming eliminating coherence mould group, and the feux rouges shimming disappears
Coherent mold group side is connected with the first reflecting mirror, and first reflecting mirror is connected with feux rouges spatial light modulator, and the feux rouges is empty
Between optical modulator be connected with close beam mould group, the 1.0 mu m waveband wavelength-tuned laser side is connected with laser amplifier, described
Laser amplifier side is connected with frequency doubling device, and the frequency doubling device side is connected with green light shimming eliminating coherence mould group, described green
Light shimming eliminating coherence mould group side is connected with green light spatial light modulator, and green light spatial light modulator side is connected with conjunction beam
Mould group, the multi-wavelength blue laser light source module group side are connected with blue light shimming eliminating coherence mould group, and the blue light shimming disappears phase
Dry mould group side is connected with the second reflecting mirror, and second reflecting mirror is connected with blue light spatial light modulator, the blue light space
Optical modulator, which is connected with, closes beam mould group, and the timing modulation Mo Zu is connected with multi-wavelength red laser light source module group, 1.0 μm respectively
Band wavelength tuned laser, 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, and the projection lens side is connected with screen.
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 mode of laser group, modulates the mode of laser group pulse output mode, described
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 display
Image.
Compared with prior art, the utility model has the beneficial effects that the utility model is scientific and reasonable for structure, secure side is used
Just:
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 a further understanding of the present invention, and constitutes part of specification, practical with this
Novel embodiment is used to explain the utility model together, does not constitute limitations of the present 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 utility model；
Fig. 2 is laser amplifier schematic diagram in the tunable green laser light source module group of the utility model；
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
It is illustrated below in conjunction with preferred embodiment of the attached drawing to the utility model, it should be understood that described herein excellent
It selects embodiment to be only used for describing and explaining the present invention, is not used to limit the utility model.
Embodiment: as shown in Figs. 1-2, the utility model provides a kind of technical solution, and one kind being based on wavelength-tuned laser
Multiple bases laser display apparatus, including multi-wavelength red laser light source module group 1, tunable green laser light source module group 2, more waves
Long blue 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 the 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, closes beam mould group 13, projection lens 14 and screen 15, tunable green laser light source module group 2 at timing modulation mould group 12
Including 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 by laser amplifier 202
Then required power obtains wavelength tuning frequency doubling green light by frequency doubling device 203, show green light source, wavelength as multiple bases
Tuning 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 wave
Long number and scan period parameter, 202 amplification mode of laser amplifier are not limited to fiber amplifier, can amplify function with Configuration Online
Rate parameter, the present embodiment use fiber amplifier mode, and fiber amplifier includes the first isolator 16, the second isolator 17, first
18, second semiconductor pumping sources 19 of semiconductor pumping sources, 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, first every
It is to make the transmission of light that there is single phase property from device 16 and the second isolator 17, light is prevented to be reflected back prototype part, first semiconductor pump
18, second, Pu source 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 semiconductor pumping sources 22 and n-th semiconductor pumping sources 23,
The amplification to 1.0 mu m waveband signal lights is completed, amplified fundamental frequency light is input to frequency doubling device 203, mainly by having temperature control
The broadband SHG crystal lithium triborate crystal (LBO) of device forms, and obtains tunable frequency doubling green light, tuned speed and timing
The timing control time of modulation mould 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 mode of laser group is also directly controlled, mode of laser group pulse output mode is modulated, modulated light, which enters, closes beam mould group
13, 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 to close beam using X prism, most
End form is incident on projection lens 14, projects screen 15 at display image.
The utility model compensates for the deficiency of existing green (light) laser type, provides one by the scheme of scanning tuning
The green light multiple bases display light source that kind is tunable, tunable green light 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, facilitate and obtain multiple green primaries, really realize multiple bases
It has been shown that, multiple bases laser light source improve 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 more preferable due to using multiple bases laser light source
Display effect.
Finally, it should be noted that being not limited to this reality the foregoing is merely the preferred embodiment of the utility model
With novel, although the utility model is described in detail with reference to the foregoing embodiments, come for those skilled in the art
Say, it is still possible to modify the technical solutions described in the foregoing embodiments, or to part of technical characteristic into
Row equivalent replacement.Within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on, should all
It is included within the scope of protection of this utility model.
Claims (6)
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；
The tunable green laser light source module group includes the wavelength tuning laser light sources of 1.0 mu m wavebands, laser amplifier and again
Frequency device, the wavelength tuning laser light source issue fundamental frequency light, are amplified to required power by laser amplifier, then by again
Frequency device obtains wavelength tuning frequency doubling green light, as multiple bases display light source；
The multi-wavelength red laser light source module group side is 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 feux rouges spatial light modulator, 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 laser amplifier, the laser
Amplifier side is connected with frequency doubling device, and the frequency doubling device side is connected with green light shimming eliminating coherence mould group, and the green light is even
Field 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 Shu Mo
Group, the multi-wavelength blue laser light source module group side are connected with blue light shimming eliminating coherence mould group, the blue light shimming eliminating coherence
Mould group side is connected with the second reflecting mirror, and second reflecting mirror is connected with blue light spatial light modulator, 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 red laser light source module group, 1.0 μm of waves respectively
Section wavelength-tuned laser, multi-wavelength blue laser light source module group, feux rouges spatial light modulator, green light spatial light modulator and indigo plant
Light spatial light modulator, 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
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.
3. a kind of multiple bases laser display apparatus based on wavelength-tuned laser according to claim 1, 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.
4. a kind of multiple bases laser display apparatus based on wavelength-tuned laser according to claim 1, 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.
5. 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.
6. 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 mode of laser group, modulates the mode of laser group pulse output mode, the spatial light modulator
For digital micro mirror element, beam is closed after being modulated by spatial light modulator and enters projection lens acquisition laser display image.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109473863A (en) * | 2019-01-10 | 2019-03-15 | 合肥全色光显科技有限公司 | A kind of multiple bases laser display apparatus based on wavelength-tuned laser |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109473863A (en) * | 2019-01-10 | 2019-03-15 | 合肥全色光显科技有限公司 | A kind of multiple bases laser display apparatus based on wavelength-tuned laser |
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