CN201266300Y - Singlechip LCOS minitype projector optical engine - Google Patents
Singlechip LCOS minitype projector optical engine Download PDFInfo
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- CN201266300Y CN201266300Y CNU2008201516224U CN200820151622U CN201266300Y CN 201266300 Y CN201266300 Y CN 201266300Y CN U2008201516224 U CNU2008201516224 U CN U2008201516224U CN 200820151622 U CN200820151622 U CN 200820151622U CN 201266300 Y CN201266300 Y CN 201266300Y
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Abstract
The utility model discloses a single-piece LCOS small projector optical engine which belongs to the technical fields of photoelectric lighting and displaying. The single-piece LCOS small projector optical engine comprises a single-piece LED red light luminous chip, an LED green light luminous chip, and an LED blue light luminous chip connected together, as well as a light receiving prism stick, a relay lens, and a transmission-reflection three-color combined prism group; the red, green and blue lights of three channels arranged on the same side are transmitted and reflected by the relay lens and the transmission-reflection three-color combined prism group into white light which is emerged, and then reflected by a converging lens and a reflection lens by 90 degrees to one fourth wave plate and an LCOS crystal liquid board by a polaroid sheet and a polarizingprism; and then the image signal of the LCOS crystal liquid board is reflected back to the polarizingprism, and projected on a screen by the polarizingprism and a projection lens. The system has the advantages of compact structure, convenient manufacture, low manufacture cost, uniformly combined color of the white light emerged by the system, and high operating factor of light energy. The single-piece LCOS small projector optical engine is especially suitable for being used as an optical engine in the small LCOS projector.
Description
Technical field
The utility model relates to the small-sized projector optical engine of a kind of one chip LCOS, belongs to photoelectric lighting and technique for displaying field.
Background technology
The optical system of existing one chip LCOS projector optical engine as shown in Figure 1, this system comprises led array red light chips R, ruddiness gatherer 001, ruddiness integration lens 004, led array green glow chip G, green glow gatherer 002, green glow integration lens 005, led array blue chip B, blue light gatherer 003, blue light integration lens 006, X-color-combination prism 007, polaroid 008, polarizing prism 009, quarter wave plate 010, LCOS liquid crystal board 011 and projection lens 012, it is red that the led array chip sends, green, blue three color light projects the filter coating f1 that X-color-combination prism 007 also passes through X-color-combination prism 007 by gatherer and integration lens separately from three directions, f2 synthesizes white light, again through polaroid 008, polarizing prism 009 and quarter wave plate 010 illuminate LCOS liquid crystal board 011, by LCOS liquid crystal board 011 reflection and through the polarized light image signal of polarization conversion, light splitting surface and the projection objective through polarizing prism 009 projects on the screen again.(see " with the one chip LCOS color projector of led light source "-American Studies center, Philip of " the modern demonstration " magazine total the 70th phase of in Dec, 2006 for details.)
There is following shortcoming in above-mentioned light engine:
1, the led array chip volume is bigger, gatherer and integration lens complex manufacturing technology, and requirement is high, volume is big.
2, LED red, green, blue three coloured light are injected the X-prism respectively from three directions, so structure is disperseed, volume is big.
3, in the X-prism, LED red, green, blue three coloured light all are to inject each self-corresponding filter coating f1, f2 respectively with 45, big like this incident angle is brought very big difficulty to the making of filter coating, it is less that filter coating can be used relative aperture, especially to led light source, more limited the utilization ratio of optical energy of high angle scattered light.
4, the X-prism is formed by four right-angle prism gummeds, and manufacture craft requires high, the cost height.
Summary of the invention
The purpose of this utility model is to propose the small-sized projector optical engine of a kind of one chip LCOS, this system have be convenient to make, the white light of low cost of manufacture, system's outgoing closes all high advantages of utilization factor of even luminous energy of look.
For achieving the above object, the utility model adopts following technical scheme.This system comprises the one chip LED red light-emitting chip that connects together, LED green luminescence chip, LED blue light emitting chip and the prismatic rod of receipts light, relay lens and Transflective three look color-combination prism groups, be placed in three passages red of the same side, green, blue light is through relay lens and Transflective three look color-combination prism group transmissions, closing look after the reflection is the white light outgoing, again through convergent lens, pass through polaroid after 90 ° of the mirror deflection, polarizing prism reflexes to quarter wave plate and LCOS liquid crystal board, and the reflection image signal of LCOS liquid crystal board returned polarizing prism, project on the screen through polarizing prism and projection objective.
Now describe the technical solution of the utility model in detail.
The small-sized projector optical engine of a kind of one chip LCOS, contain LED ruddiness passage, the LED green channel, the LED blue channel, three look color-combination prism groups, convergent lens, catoptron, polaroid, polarizing prism, quarter wave plate, LCOS liquid crystal board and projection objective, LED ruddiness passage contains LED red light-emitting chip, the prismatic rod of ruddiness, the ruddiness relay lens, the LED green channel contains LED green luminescence chip, the prismatic rod of green glow, the green glow relay lens, the LED blue channel contains LED blue light emitting chip, the prismatic rod of blue light, the blue light relay lens, projection objective, polarizing prism, quarter wave plate and LCOS liquid crystal board are arranged in order in the mode of their central optical axis coincidence, the central optical axis of their central optical axis and following three look color-combination prism groups is parallel to each other, second convergent lens, polaroid and polarizing prism are arranged in order in the mode of their central optical axis coincidence, their central optical axis is vertical with the central optical axis of projection objective, it is characterized in that, LED red light-emitting chip, the prismatic rod of ruddiness, the ruddiness relay lens is arranged in order in the mode of their central optical axis coincidence, their central optical axis is vertical with the right angle face A of first right-angle prism in the center of the right angle of first right-angle prism face A, LED green luminescence chip, the prismatic rod of green glow, the green glow relay lens is arranged in order in the mode of their central optical axis coincidence, their central optical axis is vertical with the right angle face B of the 3rd right-angle prism in the center of the right angle of the 3rd right-angle prism face B, LED blue light emitting chip, the prismatic rod of blue light, the blue light relay lens is arranged in order in the mode of their central optical axis coincidence, their central optical axis is vertical with the right angle face C of the 5th right-angle prism in the center of the right angle of the 5th right-angle prism face C, three look color-combination prism groups are made of five 45 ° of identical right-angle prisms of size, wherein be coated with first spectro-film on the inclined-plane of first right-angle prism, be coated with second spectro-film on the inclined-plane of the 3rd right-angle prism, first spectro-film is a reflect blue, see through green glow, the film of ruddiness, second spectro-film is a reflect green light, see through the film of ruddiness, second right-angle prism, the 4th right-angle prism, the 5th right-angle prism is plated film not, the inclined-plane gummed of first right-angle prism and second right-angle prism, the inclined-plane gummed of the 3rd right-angle prism and the 4th right-angle prism, the right angle face gummed of second right-angle prism and the 3rd right-angle prism, the right angle face gummed of the 4th right-angle prism and the 5th right-angle prism, the 5th right-angle prism, the 4th right-angle prism, the 3rd right-angle prism, second right-angle prism, first right-angle prism is arranged in order in the mode of their central optical axis coincidence, the A face of first right-angle prism, the B face of the 3rd right-angle prism and the C face of the 5th right-angle prism are positioned at same plane, the 5th right-angle prism, the 4th right-angle prism, the 3rd right-angle prism, the central optical axis of second right-angle prism and first right-angle prism overlaps with the central optical axis of first convergent lens, and with the angle of the reflective surface of catoptron be 45 °, the angle of the central optical axis of second convergent lens and the reflective surface of catoptron is 45 °, the central optical axis of the central optical axis of second convergent lens and three look color-combination prism groups is vertically intersected on the center of catoptron, six roots of sensation central optical axis: LED ruddiness, the central optical axis of LED green glow and LED blue light emitting chip, the central optical axis of three look color-combination prism groups, the central optical axis of second convergent lens and the central optical axis of projection objective are positioned at same plane.
Further feature of the present utility model is to replace the 5th right-angle prism in the three look color-combination prism groups with plane mirror, and the optical axis angle of cut of plane mirror and three look color-combination prisms is 45 °.
Further feature of the present utility model is to replace first right-angle prism, second right-angle prism in the three look color-combination prism groups with first light splitting piece, replace the 3rd right-angle prism, the 4th right-angle prism in the three look color-combination prism groups with second light splitting piece, the angle of cut of first light splitting piece and second light splitting piece and their central optical axis is 45 °.
Compare with background technology, the utility model has the advantages that:
1, the optical axis that is placed in LED ruddiness passage, green channel, the blue channel of the same side be parallel to each other and and the optical axis of the optical axis of three look color-combination prism groups, projection objective perpendicular, compact conformation.
2, red, blue, green three coloured light of LED can both incide three look color-combination prism groups respectively with the angle less than 45 °, help to reduce the spectro-film manufacture difficulty, improve the relative aperture of spectro-film, close the optical efficiency height.
3, LED red light-emitting chip, green luminescence chip, blue light emitting arrangements of chips together can shared one group of heat radiator, and good heat dissipation effect helps stable performance.
4, the plated film and the production technology of three look color-combination prism groups are simpler, and assembling and setting is more convenient simultaneously.
5, the volume of whole projector optical engine system is little, helps the product miniaturization.
Description of drawings
Fig. 1 is the structural representation with the one chip LCOS color projector light engine of led light source.
Fig. 2 is the optical system sterogram of the small-sized projector optical engine of one chip LCOS.Among the figure: the 1st, blue-ray LED luminescence chip, the 2nd, green light LED luminescence chip, the 3rd, red-light LED luminescence chip, the 4th, the prismatic rod of blue light, the 5th, the prismatic rod of green glow, the 6th, the prismatic rod of ruddiness, the 7th, the blue light relay lens, the 8th, the green glow relay lens, the 9th, the ruddiness relay lens, 10 is three look color-combination prism groups, 101 is first right-angle prisms, 102 is second right-angle prisms, and 103 is the 3rd right-angle prisms, and 104 is the 4th right-angle prisms, 105 is the 5th right-angle prisms, the 11st, convergent lens, the 12nd, catoptron, the 13rd, polaroid, the 14th, polarizing prism, the 15th, quarter wave plate, the 16th, LCOS liquid crystal board, the 17th, projection objective.
Fig. 3 is the structural representation that LED red, green, blue three coloured light of embodiment 2 close the colour system system.Among the figure: the 1051st, plane mirror is coated with the high-reflecting film to the ruddiness total reflection on it, plane mirror 1051 and the 4th right-angle prism 104, the 3rd right-angle prism 103, second right-angle prism 102, first right-angle prism 101 the optical axis angle of cut be 45 °.
Fig. 4 is the structural representation that LED red, green, blue three coloured light of embodiment 3 close the colour system system.Among the figure: 1011 is first light splitting pieces, be coated with reflect blue on it, see through green glow, the spectro-film of ruddiness, 1031 is second light splitting pieces, be coated with reflect green light on it, see through the spectro-film of ruddiness, the angle of cut of the central optical axis of first light splitting piece 1011 and second light splitting piece 1031 and the 5th right-angle prism 105 is 45 °.
Embodiment
Now describe technical solutions of the utility model and principle of work in conjunction with the accompanying drawings and embodiments in detail.
The small-sized projector optical engine of a kind of one chip LCOS, contain LED ruddiness passage, the LED green channel, the LED blue channel, three look color-combination prism groups 10, convergent lens 11, catoptron 12, polaroid 13, polarizing prism 14, quarter wave plate 15, LCOS liquid crystal board 16 and projection objective 17, LED ruddiness passage contains LED red light-emitting chip 3, the prismatic rod 6 of ruddiness, ruddiness relay lens 9, the LED green channel contains LED green luminescence chip 2, the prismatic rod 5 of green glow, green glow relay lens 8, the LED blue channel contains LED blue light emitting chip 1, the prismatic rod 4 of blue light, blue light relay lens 7, projection objective 17, polarizing prism 14, quarter wave plate 15 and LCOS liquid crystal board 16 are arranged in order in the mode of their central optical axis coincidence, the central optical axis of their central optical axis and following three look color-combination prism groups is parallel to each other, the second convergent lens 11b, polaroid 13 and polarizing prism 14 are arranged in order in the mode of their central optical axis coincidence, their central optical axis is vertical with the central optical axis of projection objective 17, it is characterized in that, LED red light-emitting chip 3, the prismatic rod 6 of ruddiness, ruddiness relay lens 9 is arranged in order in the mode of their central optical axis coincidence, their central optical axis is vertical with the right angle face C of the 5th right-angle prism 105 in the center of the right angle of the 5th right-angle prism 105 face C, LED green luminescence chip 2, the prismatic rod 5 of green glow, green glow relay lens 8 is arranged in order in the mode of their central optical axis coincidence, their central optical axis is vertical with the right angle face B of the 3rd right-angle prism 103 in the center of the right angle of the 3rd right-angle prism 103 face B, LED blue light emitting chip 1, the prismatic rod 4 of blue light, blue light relay lens 7 is arranged in order in the mode of their central optical axis coincidence, their central optical axis is vertical with the right angle face A of first right-angle prism 101 in the center of the right angle of first right-angle prism 101 face A, three look color-combination prism groups 10 are made of five 45 ° of identical right-angle prisms of size, wherein be coated with first spectro-film on the inclined-plane of first right-angle prism 101, be coated with second spectro-film on the inclined-plane of the 3rd right-angle prism 103, first spectro-film is a reflect blue, see through green glow, the film of ruddiness, second spectro-film is a reflect green light, see through the film of ruddiness, second right-angle prism 102, the 4th right-angle prism 104, the 5th right-angle prism 105 is plated film not, the inclined-plane gummed of first right-angle prism 101 and second right-angle prism 102, the inclined-plane gummed of the 3rd right-angle prism 103 and the 4th right-angle prism 104, the right angle face gummed of second right-angle prism 102 and the 3rd right-angle prism 103, the right angle face C gummed of the 4th right-angle prism 104 and the 5th right-angle prism 105, the 5th right-angle prism 105, the 4th right-angle prism 104, the 3rd right-angle prism 103, second right-angle prism 102, first right-angle prism 101 is arranged in order in the mode of their central optical axis coincidence, the right angle face A of first right-angle prism 101, the right angle face B of the 3rd right-angle prism 103 and the right angle face C of the 5th right-angle prism 105 are positioned at same plane, the 5th right-angle prism 105, the 4th right-angle prism 104, the 3rd right-angle prism 103, the central optical axis of second right-angle prism 102 and first right-angle prism 101 overlaps with the central optical axis of the first convergent lens 11a, and with the angle of the reflective surface of catoptron 12 be 45 °, the angle of the reflective surface of the central optical axis of the second convergent lens 11b and catoptron 12 is 45 °, the central optical axis of the central optical axis of the second convergent lens 11b and three look color-combination prism groups 10 is vertically intersected on the center of catoptron 12, six roots of sensation central optical axis: LED red light-emitting chip 3, the central optical axis of LED green luminescence chip 2 and LED blue light emitting chip 1, the central optical axis of three look color-combination prism groups 10, the central optical axis of the central optical axis of the second convergent lens 11b and projection objective 17 is positioned at same plane.
Principle of work: this embodiment is the small-sized projector optical engine of a kind of one chip LCOS, has and identical in structure structure shown in Figure 2.In the passage of red illumination, the ruddiness that red-light LED luminescence chip 3 sends enters into the prismatic rod 6 of the ruddiness that can compress the light angle of divergence with certain angle of divergence, ruddiness relay lens 9 enters into the 5th right-angle prism 105 of three look color-combination prism groups 10 and reflects on the inclined-plane of the 5th right-angle prism 105, see through the 4th behind the reflection to red light, the 3rd, second, first right-angle prism (104,103,102,101) and second, first spectro-film is from the right angle face outgoing of first right-angle prism 101, in the passage of illuminated with green, the green glow that green light LED luminescence chip 2 sends enters into the prismatic rod 5 of the green glow that can compress the light angle of divergence with certain angle of divergence, green glow relay lens 8 enters into the 3rd right-angle prism 103 of three look color-combination prism groups 10 and from the reflect green light of the 3rd right-angle prism 103, reflection and see through second right-angle prism 102 on the second spectro-film inclined-plane of saturating ruddiness, first right-angle prism 101 and first spectro-film thereof, right angle face outgoing from first right-angle prism 101, in the passage of blue illumination, the blue light that blue-ray LED luminescence chip 1 sends enters into the prismatic rod 4 of the blue light that can compress the light angle of divergence with certain angle of divergence, blue light relay lens 7 enters into first right-angle prism 101 and the reflect blue on the inclined-plane of first right-angle prism 101 of three look color-combination prism groups 10, light reveals the green, reflection and from the right angle face outgoing of first right-angle prism 101 on first spectro-film of ruddiness, these three LED channels are red, green, blue light synthesizes white light after three look color-combination prism groups 10, again through convergent lens 11, catoptron 12, after 90 ° of the deflections by polaroid 13, polarizing prism 14 and quarter wave plate 15, illuminate LCOS liquid crystal board 16, and the reflection image signal of LCOS liquid crystal board 16 returned polarizing prism 14, project on the screen through the transmission of polarizing prism 14 and by projection objective 17.
Except for the following differences, other parts and embodiment 1 are identical, and its structural representation is seen Fig. 3.
With the 5th right-angle prism 105 in the plane mirror 1051 replacements three look color-combination prism groups 10, be coated with the high-reflecting film to the ruddiness total reflection on the plane mirror 1051, the optical axis angle of cut of plane mirror 1051 and the 4th right-angle prism 104, the 3rd right-angle prism 103, second right-angle prism 102, first right-angle prism 101 is 45 °.
Except for the following differences, other parts and embodiment 1 are identical, and its structural representation is seen Fig. 4.
With first right-angle prism 101, second right-angle prism 102 in first light splitting piece, 1011 replacements, the three look color-combination prism groups 10, with the 3rd right-angle prism 103, the 4th right-angle prism 104 in second light splitting piece, 1031 replacements, the three look color-combination prism groups 10, the angle of cut of the central optical axis of first light splitting piece 1011 and second light splitting piece 1031 and the 5th right-angle prism 105 is 45 °, be coated with reflect blue on first light splitting piece 1011, see through green glow, the spectro-film of ruddiness, be coated with reflect green light on second light splitting piece 1031, see through the spectro-film of ruddiness.
The principle of work of the principle of work of embodiment 2 and embodiment 3 and embodiment 1 is identical, just no longer repeats here.
System of the present utility model is particularly suitable for being used in the miniature type LCOS projector as light engine.
Claims (3)
1, the small-sized projector optical engine of a kind of one chip LCOS, contain LED ruddiness passage, the LED green channel, the LED blue channel, three look color-combination prism groups (10), convergent lens (11), catoptron (12), polaroid (13), polarizing prism (14), quarter wave plate (15), LCOS liquid crystal board (16) and projection objective (17), LED ruddiness passage contains LED red light-emitting chip (3), the prismatic rod of ruddiness (6), ruddiness relay lens (9), the LED green channel contains LED green luminescence chip (2), the prismatic rod of green glow (5), green glow relay lens (8), the LED blue channel contains LED blue light emitting chip (1), the prismatic rod of blue light (4), blue light relay lens (7), projection objective (17), polarizing prism (14), quarter wave plate (15) and LCOS liquid crystal board (16) are arranged in order in the mode of their central optical axis coincidence, the central optical axis of their central optical axis and following three look color-combination prism groups is parallel to each other, second convergent lens (11b), polaroid (13) and polarizing prism (14) are arranged in order in the mode of their central optical axis coincidence, their central optical axis is vertical with the central optical axis of projection objective (17), it is characterized in that, LED red light-emitting chip (3), the prismatic rod of ruddiness (6), ruddiness relay lens (9) is arranged in order in the mode of their central optical axis coincidence, their central optical axis is vertical with the right angle face (C) of the 5th right-angle prism (105) in the center of the right angle face (C) of the 5th right-angle prism (105), LED green luminescence chip (2), the prismatic rod of green glow (5), green glow relay lens (8) is arranged in order in the mode of their central optical axis coincidence, their central optical axis is vertical with the right angle face (B) of the 3rd right-angle prism (103) in the center of the right angle face (B) of the 3rd right-angle prism (103), LED blue light emitting chip (1), the prismatic rod of blue light (4), blue light relay lens (7) is arranged in order in the mode of their central optical axis coincidence, their central optical axis is vertical with the right angle face (A) of first right-angle prism (101) in the center of the right angle face (A) of first right-angle prism (101), three look color-combination prism groups (10) are made of five 45 ° of identical right-angle prisms of size, wherein be coated with first spectro-film on the inclined-plane of first right-angle prism (101), be coated with second spectro-film on the inclined-plane of the 3rd right-angle prism (103), first spectro-film is a reflect blue, see through green glow, the film of ruddiness, second spectro-film is a reflect green light, see through the film of ruddiness, second right-angle prism (102), the 4th right-angle prism (104), the 5th right-angle prism (105) is plated film not, the inclined-plane gummed of first right-angle prism (101) and second right-angle prism (102), the inclined-plane gummed of the 3rd right-angle prism (103) and the 4th right-angle prism (104), the right angle face gummed of second right-angle prism (102) and the 3rd right-angle prism (103), right angle face (C) gummed of the 4th right-angle prism (104) and the 5th right-angle prism (105), the 5th right-angle prism (105), the 4th right-angle prism (104), the 3rd right-angle prism (103), second right-angle prism (102), first right-angle prism (101) is arranged in order in the mode of their central optical axis coincidence, the right angle face (A) of first right-angle prism (101), the right angle face (B) of the 3rd right-angle prism 103 and the right angle face (C) of the 5th right-angle prism (105) are positioned at same plane, the 5th right-angle prism (105), the 4th right-angle prism (104), the 3rd right-angle prism (103), the central optical axis of second right-angle prism (102) and first right-angle prism (101) overlaps with the central optical axis of first convergent lens (11a), and with the angle of the reflective surface of catoptron (12) be 45 °, the angle of the reflective surface of the central optical axis of second convergent lens (11b) and catoptron (12) is 45 °, the central optical axis of the central optical axis of second convergent lens (11b) and three look color-combination prism groups (10) is vertically intersected on the center of catoptron (12), six roots of sensation central optical axis: LED red light-emitting chip (3), the central optical axis of LED green luminescence chip (2) and LED blue light emitting chip (1), the central optical axis of three look color-combination prism groups (10), the central optical axis of the central optical axis of second convergent lens (11b) and projection objective (17) is positioned at same plane.
2, the small-sized projector optical engine of one chip LCOS according to claim 1, it is characterized in that, with the 5th right-angle prism (105) in plane mirror (1051) the replacement three look color-combination prism groups (10), be coated with the high-reflecting film to the ruddiness total reflection on the plane mirror (1051), the optical axis angle of cut of plane mirror (1051) and the 4th right-angle prism (104), the 3rd right-angle prism (103), second right-angle prism (102), first right-angle prism (101) is 45 °.
3, the small-sized projector optical engine of one chip LCOS according to claim 1, it is characterized in that, with first right-angle prism (101) in first light splitting piece (1011) replacement, the three look color-combination prism groups (10), second right-angle prism (102), with the 3rd right-angle prism (103) in second light splitting piece (1031) replacement, the three look color-combination prism groups (10), the 4th right-angle prism (104), first light splitting piece (1011) and second light splitting piece (1031) are 45 ° with the angle of cut of the central optical axis of the 5th right-angle prism (105), first light splitting piece is coated with reflect blue on (1011), see through green glow, the spectro-film of ruddiness, second light splitting piece is coated with reflect green light on (1031), see through the spectro-film of ruddiness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201516224U CN201266300Y (en) | 2008-08-04 | 2008-08-04 | Singlechip LCOS minitype projector optical engine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201516224U CN201266300Y (en) | 2008-08-04 | 2008-08-04 | Singlechip LCOS minitype projector optical engine |
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| Publication Number | Publication Date |
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| CN201266300Y true CN201266300Y (en) | 2009-07-01 |
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| CNU2008201516224U Expired - Fee Related CN201266300Y (en) | 2008-08-04 | 2008-08-04 | Singlechip LCOS minitype projector optical engine |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102081289A (en) * | 2010-12-09 | 2011-06-01 | 杭州晶景光电有限公司 | Color gamut extending compact type micro light engine based on CF-LCoS (color filter liquid crystal on silicon) |
| CN106646884A (en) * | 2016-12-30 | 2017-05-10 | 苏州苏大维格光电科技股份有限公司 | Projection objective and three-dimensional display device |
| CN111399240A (en) * | 2020-04-26 | 2020-07-10 | 腾景科技股份有限公司 | Laser total internal reflection color-combination prism |
-
2008
- 2008-08-04 CN CNU2008201516224U patent/CN201266300Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102081289A (en) * | 2010-12-09 | 2011-06-01 | 杭州晶景光电有限公司 | Color gamut extending compact type micro light engine based on CF-LCoS (color filter liquid crystal on silicon) |
| CN106646884A (en) * | 2016-12-30 | 2017-05-10 | 苏州苏大维格光电科技股份有限公司 | Projection objective and three-dimensional display device |
| CN106646884B (en) * | 2016-12-30 | 2020-03-20 | 苏州苏大维格光电科技股份有限公司 | Projection objective and three-dimensional display device |
| CN111399240A (en) * | 2020-04-26 | 2020-07-10 | 腾景科技股份有限公司 | Laser total internal reflection color-combination prism |
| CN111399240B (en) * | 2020-04-26 | 2021-02-02 | 腾景科技股份有限公司 | Laser total internal reflection color-combination prism |
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