CN207352345U - It is a kind of to strengthen bright projection light source and its optical projection system - Google Patents
It is a kind of to strengthen bright projection light source and its optical projection system Download PDFInfo
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- CN207352345U CN207352345U CN201720549490.XU CN201720549490U CN207352345U CN 207352345 U CN207352345 U CN 207352345U CN 201720549490 U CN201720549490 U CN 201720549490U CN 207352345 U CN207352345 U CN 207352345U
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- 230000005540 biological transmission Effects 0.000 claims abstract description 26
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- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 10
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- 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
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- Projection Apparatus (AREA)
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Abstract
The utility model provides a kind of projection light source and its optical projection system for strengthening light, and projection light source includes：The blue LED light source device for producing blue light beam, the red LED light source device, the green light source device and color separation microscope group of generation green fluorescence light beam that produce red beam；Green light source device includes：Green LED light source and the 3rd collimation lens set being arranged in green LED light source light path, blue excitation light source and the 4th collimation lens set being arranged on blue excitation light source optical path；Color separation microscope group includes the first dichronic mirror and the second dichronic mirror；Covered with phosphor powder layer, blue excitation light beam caused by blue excitation light source is irradiated to green LED light source surface via the reflection of color separation microscope group and/or after transmiting and produces green fluorescence light beam with the opposite excitated fluorescent powder layer of light beam caused by the luminescence chip of green LED light source itself on green LED light source surface；Via the first dichronic mirror and blue light beam of the transmission of the second dichronic mirror and/or reflection, red beam and green fluorescence light beam synthesis white light beam.
Description
Technical field
Digital projection display technology field is the utility model is related to, strengthens bright projection more specifically to a kind of
Light source and its optical projection system.
Background technology
In Projection Display product, projection display light source is highly important component.The function of projection light source is to the greatest extent may be used
Can morely by wide-angle distribution that light beam is sent, shape differ, the illuminating ray of brightness not etc., be converted to and be irradiated to display chip
The uniform light spots of effective coverage, realize projection display picture uniformly, bright.Projection module will be applied preferably, bring
Under the premise of the more preferable visual enjoyment of user in the design of holding projecting light path it is necessary to be concisely and efficiently, meet that size is small, light loss is low
And strengthening intensity of illumination makes have high light output, this also become those skilled in the art have technical problem to be solved it
One.
At present, blue laser light source is usually used and LED light source combines, using on blue laser light source excitation colour wheel
Green emitting phosphor produces green beam to improve the brightness of projection light source；As shown in Fig. 1, blue laser light source 1 swashs through transmiting
Phosphor powder layer on color development wheel 7 produces green fluorescence light beam, then produced respectively with red LED light source 8 and blue led light source 14
Red beam and blue light beam carry out closing light, or are the green LEDs that blue laser light source direct irradiation carries phosphor powder layer
Light source improves the brightness of projection light source, wherein, mark 2-7,9-13,15-17 in attached drawing 1 be of the prior art common
Component, and be not directly relevant to the inventive point of the utility model, therefore do not repeat one by one herein；It is illustrated in figure 2 the prior art
The projector optical system that phosphor powder layer directly excites, including：DMD001, TIR prism 002, deflecting prism 1, rib of transferring
Mirror 2 004, trapezoidal shaped solid optical wand 005, speculum A006, relay lens 008, red LED 009, green LED 010, LED are collected
Lens system 011, blue led 012, lens 3*3 arrays 013, LD system 3*3 arrays 014, spectroscope B015, spectroscope
A016, projection lens 017, wherein, it is glimmering that LD systems are irradiated to excitated fluorescent powder layer generation green on green LED light source after transmission
Light light beam, green fluorescence light beam enter next Optical devices with green LED light beam closing light.But using glimmering on excitation colour wheel
Light bisque produces the method for green light source because high speed rotation is also easy to produce halo effect, and image is unstable, and image quality is poor；And use LD
The method that system directly transmits excitated fluorescent powder layer is then relatively limited because the position of light source is set, underaction, in structure also not
It is enough compact.For these reasons, a kind of influence for overcoming colour wheel to projection image quality, and flexible layout, compact-sized enhancing
Bright projection light source becomes one of research emphasis of this area.
Utility model content
It is bright the purpose of this utility model is to provide a kind of simple and reasonable, compact in design for above-mentioned technical problem
Degree is high, the bright projection light source of the good enhancing of projection quality.
To achieve the above object, the utility model provides a kind of projection light source for strengthening light, including：Blue LED light
Source device, red LED light source device, the green light source device for producing green fluorescence light beam and color separation microscope group；Wherein, institute
Stating blue LED light source device includes：For producing the blue led light source of blue light beam and being arranged at blue LED light source light path
On the first collimation lens set；The red LED light source device includes：For produce red beam red LED light source and
The second collimation lens set being arranged in red LED light source light path；The green light source device includes：Green LED light source and
The 3rd collimation lens set being arranged in green LED light source light path, blue excitation light source and is arranged at blue excitation light source light
The 4th collimation lens set on road；The color separation microscope group includes：First dichronic mirror and the second dichronic mirror；The green LED light source
Surface carries phosphor powder layer, after blue excitation light beam caused by blue excitation light source is reflected and/or transmitted via color separation microscope group
Green LED light source is irradiated to produce with the opposite excitated fluorescent powder layer of light beam caused by the luminescence chip of green LED light source itself
Green fluorescence light beam；Via first dichronic mirror and the second dichronic mirror transmission and/or reflection blue light beam, red beam with
And green fluorescence light beam synthesis white light beam.
According to preferred embodiment, first dichronic mirror and the second dichronic mirror are parallel or are vertically arranged；First color separation
Mirror is arranged in the light path of the outgoing beam of the red LED light source, blue excitation light source and green LED light source, for pair
Red beam and green fluorescence light beam carry out closing light；Second dichronic mirror is arranged at the blue excitation light beam, blue light beam,
And on the red beam and the emitting light path of green fluorescence light beam after the first dichronic mirror closing light；The blue excitation light beam warp
Second dichroic mirror, is irradiated to the luminescence chip institute of green LED light source and green LED light source itself after the transmission of the first dichronic mirror
The opposite excitated fluorescent powder layer of light beam of generation produces green fluorescence light beam；The green fluorescence light beam is transmitted via the first dichronic mirror
Afterwards with carrying out closing light via the red beam of the first dichroic mirror and then being transmitted via the second dichronic mirror, and via the second color separation
The blue light beam of mirror reflection carries out closing light and forms white light beam outgoing.
According to preferred embodiment, first dichronic mirror and the second dichronic mirror are arranged in parallel；The red LED light source
Central optical axis are parallel with the central optical axis of blue led light source and blue excitation light source, the central optical axis with green LED light source
Vertically；The blue excitation light source and blue led light source are respectively arranged at the upper side and lower side of the second dichronic mirror, opposite light extraction；
Red LED light source and the blue led light source is respectively arranged at the downside of the first dichronic mirror and the second dichronic mirror, light extraction in the same direction.
According to preferred embodiment, first dichronic mirror and the second dichronic mirror are vertically arranged；The red LED light source
Central optical axis are parallel with the central optical axis of blue led light source and blue excitation light source, the central optical axis with green LED light source
Vertically；The blue excitation light source and blue led light source are respectively arranged at the upper side and lower side of the second dichronic mirror, opposite light extraction；
The red LED light source and blue excitation light source are respectively arranged at the upside of the first dichronic mirror and the second dichronic mirror, light extraction in the same direction.
According to preferred embodiment, first dichronic mirror and the second dichronic mirror are arranged in parallel；First dichronic mirror is set
In in the light path of the outgoing beam of the red LED light source, blue excitation light source and green LED light source, for red light
Beam and green fluorescence light beam carry out closing light；Second dichronic mirror is arranged at the blue excitation light beam, blue light beam, Yi Jijing
Red beam after first dichronic mirror closing light and on the emitting light path of green fluorescence light beam；The blue excitation light beam is successively through the
It is irradiated to after two dichronic mirrors and the first dichroic mirror produced by the luminescence chip of green LED light source and green LED light source itself
The opposite excitated fluorescent powder layer of light beam produce green fluorescence light beam；The green fluorescence light beam via after the first dichroic mirror with
Closing light is carried out via the red beam of the first dichronic mirror transmission and then is transmitted via the second dichronic mirror, it is and anti-via the second dichronic mirror
The blue light beam penetrated carries out closing light and forms white light beam outgoing.
According to preferred embodiment, the central optical axis and blue led light source and blue excitation light source of the red LED light source
Central optical axis it is parallel, it is vertical with the central optical axis of green LED light source；The blue led light source and blue excitation light source point
The both sides up and down of the second dichronic mirror, opposite light extraction are not arranged at.
According to preferred embodiment, first dichronic mirror and the second dichronic mirror are arranged in parallel；First dichronic mirror is set
In in the light path of the outgoing beam of the red LED light source, blue excitation light source and green LED light source, for red light
Beam and green fluorescence light beam carry out closing light；Second dichronic mirror is arranged at the blue excitation light beam, blue light beam, Yi Jijing
Red beam after first dichronic mirror closing light and on the emitting light path of green fluorescence light beam；The blue excitation light beam is first through second
The green LED light source and green LED light source luminescence chip of itself is irradiated to after dichronic mirror transmission through the first dichroic mirror to be produced
The opposite excitated fluorescent powder layer of raw light beam produces green fluorescence light beam；After the green fluorescence light beam is via the first dichroic mirror
Closing light is carried out with the red beam that is transmitted via the first dichronic mirror and then via the second dichroic mirror, and via the second dichronic mirror
The blue light beam of transmission carries out closing light and forms white light beam outgoing.
According to preferred embodiment, the central optical axis of the red LED light source are parallel with the central optical axis of blue excitation light source,
It is vertical with the central optical axis of blue led light source and green LED light source.
According to preferred embodiment, first dichronic mirror and the second dichronic mirror and blue led light source, red LED light source, indigo plant
The angle in the central optical axis direction of color excitation source and green LED light source is 45 °.
According to preferred embodiment, the blue excitation light source is LED light source or laser light source.
In addition, the utility model additionally provides a kind of optical projection system, including：Above-described any projection light source；It is multiple
Eyelens；Illuminating bundle reflection unit；Light beam steering device；Display chip and projection lens；Wherein, illuminating bundle reflection unit
Can be reflecting optics or curved reflector；The Light beam steering device can be made of relay lens and cemented prism group；
Or it is made of relay lens and free-form surface lens.
Compared with prior art, the utility model has the advantages that：In the utility model, by set two or
Multiple dichronic mirrors are reflected and transmitted to assorted light source, wherein caused by blue excitation light source blue excitation light beam via point
Look mirror group reflects and/or is irradiated to after transmiting green LED light source and light beam caused by the luminescence chip of green LED light source itself
Opposite excitated fluorescent powder layer produces green fluorescence light beam, green fluorescence light beam and the blue light beam of blue LED light source device generation,
And the red beam that red LED light supply apparatus produces synthesizes white light outgoing after the reflection and/or transmission of color separation microscope group,
Green light source brightness is greatly strengthen, enhances projection light source brightness, and due to the setting of dichronic mirror so that structure setting spirit
It is living, compact in design.
Brief description of the drawings
Fig. 1 is the projection light source structure chart of prior art iridescent wheel construction excitation；
Fig. 2 is the projector optical system that prior art phosphor powder layer directly excites；
Fig. 3 is the structure diagram of the bright projection light source embodiment one of the enhancing of the utility model；
Fig. 4 is the structure diagram of the bright projection light source embodiment two of the enhancing of the utility model；
Fig. 5 is the structure diagram of the bright projection light source embodiment three of the enhancing of the utility model；
Fig. 6 is the structure diagram of the bright projection light source example IV of the enhancing of the utility model；
Fig. 7 is the structural scheme of mechanism of the optical projection system of the bright projection light source of the enhancing of the utility model.
Embodiment
Below in conjunction with the accompanying drawings, specific embodiment of the present utility model is described in detail, it is to be understood that this practicality
New protection domain and from the limitation of embodiment.
Explicitly indicated that unless otherwise other, otherwise in entire disclosure and claims, term " comprising " or its change
Change such as "comprising" or " including " etc. and will be understood to comprise stated element or part, and do not exclude other members
Part or other parts.
Embodiment one：
Fig. 3 is the structure diagram of the bright projection light source embodiment one of the enhancing of the utility model；As shown in figure 3, root
According to the projection light source that the enhancing of the utility model embodiment is bright, including：Blue LED light source device, red LED light source
Device, the green light source device for producing green fluorescence light beam and color separation microscope group；
Wherein, the blue LED light source device includes：For producing the blue led light source 101 of blue light beam and setting
In the first collimation lens set 102 on blue LED light source light path；The red LED light source device includes：For producing red
The red LED light source 103 of light beam and the second collimation lens set 104 being arranged in red LED light source light path；The green
Light supply apparatus includes：Green LED light source 105 and the 3rd collimation lens set 106 being arranged in green LED light source light path, it is blue
Color excitation source 107 and the 4th collimation lens set 108 being arranged in 107 light path of blue excitation light source；The color separation microscope group
Including：The first dichronic mirror 109 and the second dichronic mirror 110 being arranged in parallel.
The green LED light source 105 includes：LED luminescence chips and the phosphor powder layer on luminescence chip surface.The blueness swashs
Light emitting source 107 is reflected through the second dichronic mirror 110, the first dichronic mirror 109 transmission after be irradiated to 105 surface of green LED light source with it is green
The opposite excitated fluorescent powder layer of light beam caused by the luminescence chip of itself of color LED light source 105 produces green fluorescence light beam.
First dichronic mirror 109 is arranged at the red LED light source 103, blue excitation light source 107 and green LED
In the light path of the outgoing beam of light source 105, carried out for reflection blue excitation beam, and to red beam and green fluorescence light beam
Closing light.
Second dichronic mirror 110 is arranged at the blue excitation light beam, blue light beam, and through the first dichronic mirror 109
Red beam after closing light and on the emitting light path of green fluorescence light beam, for the blue excitation light beam and blue light beam into
Row reflects and the green fluorescence light beam through 109 closing light of the first dichronic mirror and red beam is transmitted, and will be through saturating
The green fluorescence light beam after reflection is penetrated, blue light beam and red beam carry out closing light.
The blue light beam that the blue led light source 101 produces is after the first collimation lens set 102 collimation, via second point
Look mirror 110 reflects.
The red beam that the red LED light source 103 produces is first after the second collimation lens set 104 collimation, via first
The reflection of dichronic mirror 109 is transmitted with green fluorescence light beam closing light and through second dichronic mirror 110.
The red reflected after the green fluorescence light beam is transmitted via the first dichronic mirror 109 and via the first dichronic mirror 109
Light beam carries out closing light and then is transmitted via the second dichronic mirror 110, and the blue light beam with being reflected via the second dichronic mirror 110 is closed
Light forms white light beam outgoing.
In the present embodiment, the central optical axis of the red LED light source 103 and blue led light source 101 and blueness swash
The central optical axis of light emitting source 107 are parallel, vertical with the central optical axis of green LED light source 105；The blue excitation light source 107
The both sides of the second dichronic mirror 110, opposite light extraction are respectively arranged at blue led light source 101；The red LED light source 103 and indigo plant
Color LED light source 101 is respectively arranged at the homonymy of the first dichronic mirror 109 and the second dichronic mirror 110, light extraction in the same direction.
In the present embodiment, 109 and second dichronic mirror 110 of the first dichronic mirror is arranged in parallel, with blue led light source
101st, the angle in the central optical axis direction of red LED light source 103, blue excitation light source 107 and green LED light source 105 is
45°。
In the present embodiment, the blue excitation light source 107 can be the solid state light emitters such as LED light source or laser light source.
Embodiment two：
Fig. 4 is the structure diagram of the bright projection light source embodiment two of the enhancing of the utility model；As shown in figure 4, institute
Stating blue LED light source device includes：For producing the blue led light source 201 of blue light beam and being arranged at blue led light source
The first collimation lens set 202 in 201 light paths；The red LED light source device includes：For producing the red of red beam
LED light source 203 and the second collimation lens set 204 being arranged in red LED light source light path；The green light source device bag
Include：Green LED light source 205 and the 3rd collimation lens set 206 being arranged in 205 light path of green LED light source, blue excitation
Light source 207 and the 4th collimation lens set 208 being arranged in 207 light path of blue excitation light source.
What is different from the first embodiment is that in embodiment two, the color separation microscope group includes：Vertically disposed first dichronic mirror
209 and second dichronic mirror 210；The central optical axis and blue led light source 201 and blue excitation light of the red LED light source 203
The central optical axis in source 207 are parallel, vertical with the central optical axis of green LED light source 205；The blue excitation light source 207 and indigo plant
Color LED light source 201 is respectively arranged at the upper side and lower side of the second dichronic mirror 210, opposite light extraction；The red LED light source 203
The upside of the first dichronic mirror 209 and the second dichronic mirror 210, light extraction in the same direction are respectively arranged at blue excitation light source 201.
In the present embodiment, the green LED light source 205 includes：LED luminescence chips and the fluorescent powder on luminescence chip surface
Layer.The blue excitation light source 207 is reflected through the second dichronic mirror 210, and green LED light is irradiated to after the transmission of the first dichronic mirror 209
It is glimmering that 205 surface of source with the opposite excitated fluorescent powder layer of light beam caused by green LED light source 205 luminescence chip of itself produces green
Light light beam.
First dichronic mirror 209 is arranged at the red LED light source 203, blue excitation light source 207 and green LED
In the light path of the outgoing beam of light source 205, carried out for reflection blue excitation beam, and to red beam and green fluorescence light beam
Closing light.
Second dichronic mirror 210 is arranged at the blue excitation light beam, blue light beam, and through the first dichronic mirror 209
Red beam after closing light and on the emitting light path of green fluorescence light beam, for the blue excitation light beam and blue light beam into
Row reflects and the green fluorescence light beam through 209 closing light of the first dichronic mirror and red beam is transmitted, and will be through saturating
The green fluorescence light beam after reflection is penetrated, blue light beam and red beam carry out closing light.
The blue light beam that the blue led light source 201 produces is after the first collimation lens set 202 collimation, via second point
Look mirror 210 reflects.
The red beam that the red LED light source 203 produces is first after the second collimation lens set 204 collimation, via first
The reflection of dichronic mirror 209 is transmitted with green fluorescence light beam closing light and through second dichronic mirror 210.
The red reflected after the green fluorescence light beam is transmitted via the first dichronic mirror 209 and via the first dichronic mirror 209
Light beam carries out closing light and then is transmitted via the second dichronic mirror 210, and the blue light beam with being reflected via the second dichronic mirror 210 is closed
Light forms white light beam outgoing.
In the present embodiment, 209 and second dichronic mirror 210 of the first dichronic mirror is arranged in parallel, with blue led light source
101st, the angle in the central optical axis direction of red LED light source 203, blue excitation light source 207 and green LED light source 205 is
45°。
In the present embodiment, the blue excitation light source 207 can be the solid state light emitters such as LED light source or laser light source.
Wherein, the blue LED light source device and the position of red LED light source device can mutually be exchanged, as long as can protect
Demonstrate,proving the red LED light source 203 after dichronic mirror transmits and reflects and blue led light source 201 can close with green fluorescence light beam
Light is emitted in one direction.
Embodiment three：
Fig. 5 is the structure diagram of the bright projection light source embodiment three of the enhancing of the utility model；As shown in figure 5, institute
Stating blue LED light source device includes：For producing the blue led light source 301 of blue light beam and being arranged at blue led light source
The first collimation lens set 302 in 301 light paths；The red LED light source device includes：For producing the red of red beam
LED light source 303 and the second collimation lens set 304 being arranged in red LED light source light path；The green light source device bag
Include：Green LED light source 305 and the 3rd collimation lens set 306 being arranged in 305 light path of green LED light source, blue excitation light
Source 307 and the 4th collimation lens set 308 being arranged in 307 light path of blue excitation light source；First dichronic mirror, 309 He
Second dichronic mirror 310 is arranged in parallel.
What is different from the first embodiment is that first dichronic mirror 309 is used for reflection blue excitation beam and green fluorescence
Light beam, and transmission red beam.
First dichronic mirror 309 is arranged at the red LED light source 303, blue excitation light source 307 and green LED
In the light path of the outgoing beam of light source 305, for carrying out closing light to red beam and green fluorescence light beam.
Second dichronic mirror 310 is arranged at the blue excitation light beam, blue light beam, and through the first dichronic mirror 309
Red beam after closing light and on the emitting light path of green fluorescence light beam；For reflection blue LED beam, and transmission is through first
Red beam and green fluorescence light beam after 309 closing light of dichronic mirror, and to the blue light beam after reflection and transmission, red beam
Closing light is carried out with green fluorescence light beam.
The blue excitation light beam is successively irradiated to green LED after the second dichronic mirror 310 and the reflection of the first dichronic mirror 309
305 surface of light source produces green with the opposite excitated fluorescent powder layer of light beam caused by green LED light source 305 luminescence chip of itself
Fluorescent light beam.
The blue light beam that the blue led light source 301 produces is after the first collimation lens set 302 collimation, via second point
Look mirror 310 reflects.
The red beam that the red LED light source 303 produces is first after the second collimation lens set 304 collimation, via first
The transmission of dichronic mirror 309 is transmitted with green fluorescence light beam closing light and through second dichronic mirror 310.
The red transmitted after the green fluorescence light beam is reflected via the first dichronic mirror 309 and via the first dichronic mirror 309
Light beam carries out closing light and then is transmitted via the second dichronic mirror 310, and the blue light beam with being reflected via the second dichronic mirror 310 is closed
Light forms white light beam outgoing.
In the present embodiment, the central optical axis and blue led light source 301 of the red LED light source 303, blue excitation light
The central optical axis in source 307, and the central optical axis of green LED light source 305 are vertical；The blue led light source 301 and blue excitation
Light source 307 is respectively arranged at the both sides of the second dichronic mirror 310, opposite light extraction.
Wherein, 309 and second dichronic mirror 310 of the first dichronic mirror is not limited to be arranged in parallel, can also be according to specific
The placement position of light supply apparatus is vertically arranged.
Wherein, the blue LED light source device and the position of red LED light source device can mutually be exchanged, as long as can protect
Demonstrate,proving the red LED light source 303 after dichronic mirror transmits and reflects and blue led light source 301 can close with green fluorescence light beam
Light is emitted in one direction.
Wherein, if the blue LED light source device and the position of red LED light source device are mutually exchanged, the blueness
The central optical axis of LED light source 301 and the central optical axis of green LED light source 305, the central optical axis of blue excitation light source 307, and
The central optical axis of red LED light source 303 are vertical.
Example IV：
Fig. 6 is the structure diagram of the bright projection light source example IV of the enhancing of the utility model；As shown in fig. 6, institute
Stating blue LED light source device includes：For producing the blue led light source 401 of blue light beam and being arranged at blue led light source light
The first collimation lens set 402 on road；The red LED light source device includes：For producing the red LED light of red beam
Source 403 and the second collimation lens set 404 being arranged in 403 light path of red LED light source；The green light source device includes：
Green LED light source 405 and the 3rd collimation lens set 406 being arranged in 405 light path of green LED light source, blue excitation light source
407 and the 4th collimation lens set 408 that is arranged in 407 light path of blue excitation light source；First dichronic mirror 409 and
Two dichronic mirrors 410 are arranged in parallel.
First dichronic mirror 409 is arranged at the red LED light source 403, blue excitation light source 407 and green LED
In the light path of the outgoing beam of light source 405, for carrying out closing light to red beam and green fluorescence light beam.
Second dichronic mirror 410 is arranged at the blue excitation light beam, blue light beam, and through the first dichronic mirror 409
Red beam after closing light and on the emitting light path of green fluorescence light beam, for transmitting blue LED light source 401, and reflection warp
Red beam and green fluorescence light beam after first dichronic mirror, 409 closing light, and to the blue light beam after reflection and transmission, it is red
Light beam and green fluorescence light beam carry out closing light.
The blue excitation light beam is first through 409 reflected illumination of the first dichronic mirror to green after the transmission of the second dichronic mirror 410
405 surface of LED light source is produced with the opposite excitated fluorescent powder layer of light beam caused by green LED light source 405 luminescence chip of itself
Green fluorescence light beam.
The blue light beam that the blue led light source 401 produces is after the first collimation lens set 402 collimation, via second point
Look mirror 410 transmits.
The red beam that the red LED light source 403 produces is first after the second collimation lens set 404 collimation, via first
The transmission of dichronic mirror 409 is reflected with green fluorescence light beam closing light and through second dichronic mirror 410.
The red transmitted after the green fluorescence light beam is reflected via the first dichronic mirror 409 and via the first dichronic mirror 409
Light beam carries out closing light and then is reflected via the second dichronic mirror 410, and the blue light beam with being transmitted via the second dichronic mirror 410 is closed
Light forms white light beam outgoing.
In the present embodiment, the central optical axis of the central optical axis of the red LED light source 403 and blue excitation light source 407
It is parallel, it is vertical with the central optical axis of blue led light source 401 and green LED light source 405.
Wherein, 409 and second dichronic mirror 410 of the first dichronic mirror is not limited to be arranged in parallel, can also be according to specific
The placement position of light supply apparatus is vertically arranged.
Wherein, the blue LED light source device and the position of red LED light source device can mutually be exchanged, as long as can protect
Demonstrate,proving the red LED light source 403 after dichronic mirror transmits and reflects and blue led light source 401 can close with green fluorescence light beam
Light is emitted in one direction.
Wherein, if the blue LED light source device and the position of red LED light source device are mutually exchanged, the blueness
The central optical axis of LED light source 401 with and blue excitation light source 407 central optical axis it is parallel, with red LED light source 401 and green
The central optical axis of color LED light source 405 are vertical.
Embodiment five：
Fig. 7 is the structural scheme of mechanism of the optical projection system of the bright projection light source of the enhancing of the utility model；As shown in fig. 7,
The optical projection system, including：Projection light source, to produce projection lighting light beam；Fly's-eye lens 10；Illuminating bundle reflection unit
20；Light beam steering device；Display chip 50 and projection lens 60.
In the present embodiment, illuminating bundle reflection unit 20 can be reflecting optics or curved reflector；The light beam
Guiding device can be made of relay lens 30 and cemented prism group 40；Or by 40 groups of relay lens 30 and free-form surface lens
Into.
It is worth noting that, in above-described embodiment, can be according to need in order to improve the reflection of the dichronic mirror or efficiency of transmission
Plate Anti-reflective coating or anti-reflection film；The projection light source structure of the utility model is not restricted to above-mentioned four kinds of embodiments, every
The mode that green fluorescence is produced by way of the phosphor powder layer that blue excitation light source is irradiated on green LED light source belongs to this reality
With new protection domain.
In the utility model embodiment, the assorted light supply apparatus is preferably disposed on approximately the same plane, and so setting can
So that structure is compacter, naturally it is also possible to sets assorted light supply apparatus according to the needs of concrete structure or environment and does not exist
Approximately the same plane, as long as so that by exciting the green fluorescence produced and blue light beam and red beam to pass through dichroic mirror
With finally energy closing light outgoing after transmission, the purpose of this utility model can be realized.
In the present invention, by setting two or more dichronic mirrors to reflect and transmit assorted light source, wherein blueness swashs
Light emitting source is irradiated to green LED light source after dichroic mirror or transmission, and the luminescence chip of itself is produced with green LED light source
The opposite excitated fluorescent powder layer of raw light beam produces green fluorescence light beam, and green fluorescence light beam is produced with blue LED light source device
Blue light beam, and the red beam that red LED light source device produces go out by the reflection or transmission progress closing light of dichronic mirror
Penetrate, greatly strengthen green light source brightness, enhance projection light source brightness；And due to the setting of dichronic mirror so that simple in structure
Rationally, compact in design, structure setting can be flexible and changeable, greatly strengthen the brightness of green light source, improve projection quality, solve
The problem of light-source brightness deficiency in projection light source.
The description of the foregoing specific exemplary embodiment to the utility model be in order to illustrate and illustration purpose.These
Description is not wishing to for the utility model to be defined to disclosed precise forms, and it will be apparent that according to the above instruction, can carry out
Many change and variations.The purpose of selecting and describing the exemplary embodiment is that explain the certain principles of the utility model
And its practical application, so that those skilled in the art can realize and utilize a variety of examples of the utility model
Property embodiment and various chooses and changes.The scope of the utility model is intended to by claims and its waits similar shape
Formula is limited.
Claims (10)
1. a kind of strengthen bright projection light source, it is characterised in that including：
Blue LED light source device, red LED light source device, the green light source device for producing green fluorescence light beam and point
Look mirror group；
Wherein, the blue LED light source device includes：For producing the blue led light source of blue light beam and being arranged at blueness
The first collimation lens set on LED light source light path；The red LED light source device includes：For producing the red of red beam
LED light source and the second collimation lens set being arranged in red LED light source light path；The green light source device includes：Green
LED light source and the 3rd collimation lens set being arranged in green LED light source light path, blue excitation light source and are arranged at blueness
The 4th collimation lens set in excitation source light path；
The color separation microscope group includes：First dichronic mirror and the second dichronic mirror；
The green LED light source surface carries phosphor powder layer, and blue excitation light beam is via color separation caused by blue excitation light source
Microscope group reflects and/or is irradiated to after transmiting green LED light source surface and light caused by the luminescence chip of green LED light source itself
Shu Xiangxiang excitated fluorescent powders layer produces green fluorescence light beam；
It is glimmering via first dichronic mirror and the blue light beam of the transmission of the second dichronic mirror and/or reflection, red beam and green
Light light beam synthesizes white light beam.
2. projection light source according to claim 1, it is characterised in that
First dichronic mirror and the second dichronic mirror are parallel or are vertically arranged；
First dichronic mirror is arranged at the outgoing beam of the red LED light source, blue excitation light source and green LED light source
Light path on, for carrying out closing light to red beam and green fluorescence light beam；
Second dichronic mirror is arranged at the blue excitation light beam, blue light beam, and red after the first dichronic mirror closing light
On the emitting light path of color beam and green fluorescence light beam；
The blue excitation light beam through the second dichroic mirror and the first dichronic mirror transmission after be irradiated to green LED light source surface with
The opposite excitated fluorescent powder layer of light beam caused by the luminescence chip of green LED light source itself produces green fluorescence light beam；
The blue light beam is via the second dichroic mirror；
The red beam is transmitted via the first dichroic mirror and green fluorescence light beam closing light and through second dichronic mirror；
The green fluorescence light beam via the first dichronic mirror transmit after with being closed via the red beam of the first dichroic mirror
Then light is transmitted via the second dichronic mirror, go out with carrying out closing light formation white light beam via the blue light beam of the second dichroic mirror
Penetrate.
3. projection light source according to claim 2, it is characterised in that first dichronic mirror and the second dichronic mirror is parallel sets
Put；The central optical axis of the red LED light source are parallel with the central optical axis of blue led light source and blue excitation light source, with
The central optical axis of green LED light source are vertical；The blue excitation light source and blue led light source are respectively arranged at the second dichronic mirror
Both sides, opposite light extraction；Red LED light source and the blue led light source is respectively arranged at the first dichronic mirror and the second dichronic mirror
Homonymy, light extraction in the same direction.
4. projection light source according to claim 2, it is characterised in that first dichronic mirror and the second dichronic mirror are vertically set
Put；The central optical axis of the red LED light source are parallel with the central optical axis of blue led light source and blue excitation light source, with
The central optical axis of green LED light source are vertical；The blue excitation light source and blue led light source are respectively arranged at the second dichronic mirror
Both sides, opposite light extraction；The red LED light source and blue excitation light source are respectively arranged at the first dichronic mirror and the second dichronic mirror
Homonymy, light extraction in the same direction.
5. projection light source according to claim 1, it is characterised in that first dichronic mirror and the second dichronic mirror is parallel sets
Put；
First dichronic mirror is arranged at the outgoing beam of the red LED light source, blue excitation light source and green LED light source
Light path on, for carrying out closing light to red beam and green fluorescence light beam；
Second dichronic mirror is arranged at the blue excitation light beam, blue light beam, and red after the first dichronic mirror closing light
On the emitting light path of color beam and green fluorescence light beam；
The blue excitation light beam be successively irradiated to after the second dichronic mirror and the first dichroic mirror green LED light source surface with
The opposite excitated fluorescent powder layer of light beam caused by the luminescence chip of green LED light source itself produces green fluorescence light beam；
The blue light beam is via the second dichroic mirror；
The red beam is first transmitted via the transmission of the first dichronic mirror with green fluorescence light beam closing light and through second dichronic mirror；
The green fluorescence light beam is closed via after the first dichroic mirror with the red beam transmitted via the first dichronic mirror
Then light is transmitted via the second dichronic mirror, go out with carrying out closing light formation white light beam via the blue light beam of the second dichroic mirror
Penetrate.
6. projection light source according to claim 5, it is characterised in that the central optical axis and blueness of the red LED light source
The central optical axis of LED light source and blue excitation light source are parallel, vertical with the central optical axis of green LED light source；The blueness
LED light source and blue excitation light source are respectively arranged at the both sides of the second dichronic mirror, opposite light extraction.
7. projection light source according to claim 1, it is characterised in that first dichronic mirror and the second dichronic mirror is parallel sets
Put；
First dichronic mirror is arranged at the outgoing beam of the red LED light source, blue excitation light source and green LED light source
Light path on, for carrying out closing light to red beam and green fluorescence light beam；
Second dichronic mirror is arranged at the blue excitation light beam, blue light beam, and red after the first dichronic mirror closing light
On the emitting light path of color beam and green fluorescence light beam；
The blue excitation light beam is first irradiated to green LED light source surface after the transmission of the second dichronic mirror through the first dichroic mirror
With the luminescence chip of green LED light source itself caused by the opposite excitated fluorescent powder layer of light beam produce green fluorescence light beam；
The blue light beam is transmitted via the second dichronic mirror；
The red beam is via the transmission of the first dichronic mirror with green fluorescence light beam closing light and through second dichroic mirror；
The green fluorescence light beam is closed via after the first dichroic mirror with the red beam transmitted via the first dichronic mirror
Then light via the second dichroic mirror, closing light formation white light beam is carried out with the blue light beam transmitted via the second dichronic mirror and is gone out
Penetrate.
8. projection light source according to claim 7, it is characterised in that the central optical axis and blueness of the red LED light source
The central optical axis of excitation source are parallel, vertical with the central optical axis of blue led light source and green LED light source.
9. according to claim 1-8 any one of them projection light sources, it is characterised in that first dichronic mirror and the second color separation
Mirror and the angle in the central optical axis direction of blue led light source, red LED light source, blue excitation light source and green LED light source are equal
For 45 °；The blue excitation light source is LED light source or laser light source.
A kind of 10. optical projection system, it is characterised in that including：Claim 1-9 any one of them projection light sources；Fly's-eye lens；
Illuminating bundle reflection unit；Light beam steering device；Display chip and projection lens.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720549490.XU CN207352345U (en) | 2017-05-17 | 2017-05-17 | It is a kind of to strengthen bright projection light source and its optical projection system |
| PCT/CN2017/085733 WO2018209722A1 (en) | 2017-05-17 | 2017-05-24 | Projection light source with enhanced light intensity and projection system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720549490.XU CN207352345U (en) | 2017-05-17 | 2017-05-17 | It is a kind of to strengthen bright projection light source and its optical projection system |
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| CN207352345U true CN207352345U (en) | 2018-05-11 |
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| CN201720549490.XU Active CN207352345U (en) | 2017-05-17 | 2017-05-17 | It is a kind of to strengthen bright projection light source and its optical projection system |
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| CN (1) | CN207352345U (en) |
| WO (1) | WO2018209722A1 (en) |
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| CN110187595A (en) * | 2019-06-18 | 2019-08-30 | 吕素萍 | A kind of hybrid projection light source and forming method thereof |
| CN111198475A (en) * | 2018-11-19 | 2020-05-26 | 无锡视美乐激光显示科技有限公司 | Blue light generation method and illumination system |
| CN112230517A (en) * | 2020-10-28 | 2021-01-15 | 晶影光学技术(常熟)有限公司 | High-power and high-uniformity miniature ultraviolet LED illuminator |
| CN112305845A (en) * | 2020-11-13 | 2021-02-02 | 歌尔光学科技有限公司 | Projection light path and projection equipment |
| CN114077139A (en) * | 2020-08-21 | 2022-02-22 | 成都极米科技股份有限公司 | Three-color light source equipment and projection display equipment |
| US20220252967A1 (en) * | 2021-02-09 | 2022-08-11 | Coretronic Corporation | Illumination system and projection device |
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| JP2011221504A (en) * | 2010-03-26 | 2011-11-04 | Panasonic Corp | Illuminator and projection type image display device using the same |
| JP2012141411A (en) * | 2010-12-28 | 2012-07-26 | Jvc Kenwood Corp | Light source device |
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| CN205750256U (en) * | 2016-06-17 | 2016-11-30 | 广景视睿科技（深圳）有限公司 | A kind of projection lighting optical path |
| CN106950788A (en) * | 2017-05-17 | 2017-07-14 | 广景视睿科技（深圳）有限公司 | A kind of projection lighting optical path and its projection arrangement |
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- 2017-05-17 CN CN201720549490.XU patent/CN207352345U/en active Active
- 2017-05-24 WO PCT/CN2017/085733 patent/WO2018209722A1/en active Application Filing
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| CN111198475A (en) * | 2018-11-19 | 2020-05-26 | 无锡视美乐激光显示科技有限公司 | Blue light generation method and illumination system |
| CN110187595A (en) * | 2019-06-18 | 2019-08-30 | 吕素萍 | A kind of hybrid projection light source and forming method thereof |
| CN114077139A (en) * | 2020-08-21 | 2022-02-22 | 成都极米科技股份有限公司 | Three-color light source equipment and projection display equipment |
| CN112230517A (en) * | 2020-10-28 | 2021-01-15 | 晶影光学技术(常熟)有限公司 | High-power and high-uniformity miniature ultraviolet LED illuminator |
| CN112305845A (en) * | 2020-11-13 | 2021-02-02 | 歌尔光学科技有限公司 | Projection light path and projection equipment |
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| Publication number | Publication date |
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| WO2018209722A1 (en) | 2018-11-22 |
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