CN210109545U - Self-luminous projection display system and micro-display full-color optical machine - Google Patents
Self-luminous projection display system and micro-display full-color optical machine Download PDFInfo
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- CN210109545U CN210109545U CN201920469298.9U CN201920469298U CN210109545U CN 210109545 U CN210109545 U CN 210109545U CN 201920469298 U CN201920469298 U CN 201920469298U CN 210109545 U CN210109545 U CN 210109545U
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Abstract
The utility model provides a self-luminous projection display system and show full-color ray apparatus a little, this self-luminous projection display system includes: the light-emitting device comprises a plurality of light-emitting units for emitting light of different colors, and an optical light-combining unit arranged on a light path of a light beam emitted by each light-emitting unit, wherein the light-emitting units are used for combining the light emitted by the light-emitting units and emitting the light to the outside along the same direction. The light emitting units are adopted to directly emit light with different colors, and the optical light combining unit is utilized to combine light emitted by each light emitting unit and emit the light along the same direction, so that the design of the traditional back head reflection type projection light path is changed, the self-luminous projection mode is realized, the light path structure is simplified, and the volume is reduced.
Description
Technical Field
The utility model relates to a projection display technology field, concretely relates to self-luminous projection display system and show full-color ray apparatus a little.
Background
Conventional projection systems generally adopt LCOS and DLP designs. LCOS (liquid crystal on silicon) is a liquid crystal display formed based on a reflective mode, and is a novel reflective display technology in which an LCD and a CMOS integrated circuit are organically combined. The imaging of the LCOS projection technology uses reflective light paths. The reflected image is optically separated from the incident light so as to be magnified by the projection objective and imaged onto a screen. Projectors using LCOS technology do not transmit light through the LCD panel, but use this reflection to form an image. LCOS is therefore a new reflective micro lcd projection technology. The traditional three-piece LCOS imaging system firstly divides white light emitted by a projector bulb into lights of three primary colors of red, green and blue through a light splitting system, then each primary color light irradiates on a reflective LCOS chip, the system changes the intensity of the reflected light of each pixel point of the chip by controlling the state of liquid crystal molecules on the LCOS panel, finally the light reflected by the LCOS is converged into a beam of light through necessary optical refraction, and the beam of light irradiates on a screen through a projector lens to form a colorful image.
DLP (digital light processing) technology digitally processes an image signal and projects light. The technology of displaying visual digital information is implemented based on a Digital Micromirror Device (DMD) developed by texas instruments, usa. The principle is that a cold light source emitted by a UHP bulb passes through a condensing lens, light is homogenized through a light bar, the processed light is divided into RGB (red, green and blue) three colors or RGBW (red, green and blue) and other more colors through a color wheel, or light is filtered by a BSV (back-scattered light) liquid crystal splicing technology lens and transmitted, then the colors are projected on a DMD (digital micromirror device) chip through the lens, and finally the colors are reflected and imaged on a projection screen through a projection lens.
Whether LCOS or DLP, an initial backlight source is needed to form images through a reflection light path, which undoubtedly increases power consumption and device volume and is not beneficial to miniaturization of projection display devices. Moreover, the lateral size of the optical imaging system of the conventional multi-color projection system is large, and the lateral size of the optical imaging system cannot be further reduced due to the light path, so that the projection system has a large volume, which is not favorable for miniaturization and lightness of devices.
SUMMERY OF THE UTILITY MODEL
In order to overcome the above problems, the present invention aims to provide a self-luminous projection display system, which realizes self-luminous projection display system with simple light path and small volume.
In order to achieve the above object, the present invention provides a self-luminous projection display system, including:
a plurality of light emitting units for emitting light of different colors;
and the optical light combination unit is arranged on the light path of the light beam emitted by each light emitting unit, combines the light emitted by the plurality of light emitting units and emits the light to the outside along the same direction.
Preferably, the optical imaging unit is further included for receiving the light beam from the optical light combining unit and projecting the light beam to the interface in an image amplification manner.
Preferably, the plurality of light emitting units are arranged around the optical light combining unit, and the emission light beam of each light emitting unit is emitted to the optical light combining unit;
the optical light combination unit combines the light beams emitted by each light emitting unit to the same direction and emits the light beams outwards.
Preferably, there are three light emitting units, and extension surfaces of light emitting surfaces of adjacent light emitting units intersect with each other.
Preferably, the light emitting surfaces of adjacent light emitting units are perpendicular to each other.
Preferably, two of them luminescence unit sets up relatively, and these two the luminescence surface of luminescence unit is relative, and the initial light beam that the two sent gathers the light unit through optics and gathers the beam direction of converging perpendicular with the initial light beam direction of outgoing to the external world, and is parallel with the luminescence surface of the two.
Preferably, the light emitting surfaces of the remaining light emitting units are perpendicular to the direction of the merged light beam, and the initial light beam emitted by the other light emitting unit is coincident with the merged light beam.
Preferably, the rest of the light emitting units are clamped between the light emitting surfaces of the two oppositely arranged light emitting units and are perpendicular to the light emitting surfaces of the two oppositely arranged light emitting units; and the light emitting surfaces of the rest of the light emitting units face the direction of the converged light beam.
Preferably, each of the light emitting units is a light emitting chip.
Preferably, the three light emitting units are a red light emitting unit, a green light emitting unit and a blue light emitting unit, respectively.
Preferably, the red light emitting unit and the blue light emitting unit are arranged oppositely, and a light emitting surface of the green light emitting unit and a light emitting surface of the red light emitting unit are arranged in a crossing manner and are sandwiched between the blue light emitting unit and the red light emitting unit.
Preferably, the light emitting unit is an LED.
Preferably, the optical light combination unit is a light combination prism.
Preferably, a projection profile of the light emitting unit on a surface opposite to the optical light combining unit is smaller than or equal to a surface profile opposite to the optical light combining unit.
In order to achieve the above object, the utility model also provides a full-color ray apparatus of little demonstration, it includes above-mentioned arbitrary one self-luminous projection display system.
The utility model discloses a self-luminous projection display system adopts the light that the luminescence unit directly sent different colours to utilize optics to close the light unit and close every luminescence unit transmission beam and along same direction transmission, thereby changed the design of traditional back of the body first reflection formula projection light path, realized self-luminous projection mode, simplified the light path structure, reduced the volume. Furthermore, the plurality of light-emitting units adopt the design of surrounding the optical light-combining unit, and the emission light beam of each light-emitting unit emits towards the optical light-combining unit, so that the optical light-combining unit can combine the light beams to the same direction and emit outwards.
Drawings
FIG. 1 is a schematic structural diagram of a self-luminous projection display system according to an embodiment of the present invention
Detailed Description
In order to make the contents of the present invention clearer and more understandable, the contents of the present invention are further explained below with reference to the drawings of the specification. Of course, the invention is not limited to this specific embodiment, and general alternatives known to those skilled in the art are also within the scope of the invention.
The present invention will be described in further detail with reference to fig. 1 and the following detailed description of the preferred embodiments. It should be noted that the drawings are in a simplified form and are not to precise scale, and are only used for conveniently and clearly achieving the purpose of assisting in describing the embodiment.
Referring to fig. 1, the self-luminous projection display system of the present embodiment includes: a plurality of light emitting units 101, 102, 103 and an optical light combining unit 200. The plurality of light emitting units 101, 102, 103 are configured to emit light of different colors, and the optical light combining unit 200 is disposed on an optical path of light emitted by each of the light emitting units 101, 102, 103, and combines the light emitted by the plurality of light emitting units 101, 102, 103 to emit the combined light to the outside along the same direction. In addition, an optical imaging unit 300 is disposed in the direction of the optical light combining unit 200 for receiving the light beam from the optical light combining unit 200 and projecting the light beam to the interface in an enlarged manner.
Here, the plurality of light emitting units 101, 102, 103 are disposed around the optical light combining unit 200, and the emission light beam of each light emitting unit 101, 102, 103 is emitted toward the optical light combining unit 200, so that the optical light combining unit 200 combines the light beams emitted from each light emitting unit 101, 102, 103 into the same direction and emits outward. The size of the surface of the optical light combining unit 200 corresponding to the light emitting surfaces of the light emitting units 101, 102, 103 is preferably larger than or equal to the corresponding light emitting surface. The size of the surface of the optical imaging unit 300 opposite to the light emitting surface of the optical light combining unit 200 is larger than or equal to the corresponding light emitting surface, so that the light beams emitted by the light emitting units 101, 102 and 103 are all transmitted to the optical imaging unit 300, and the light conversion efficiency is improved.
Specifically, in the three light emitting units 101, 102, and 103, the extension surfaces of the light emitting surfaces of the adjacent light emitting units 101, 102, and 103 intersect with each other, so that the light emitted from the light emitting units 101, 102, and 103 is directed to the optical light combining unit 200. Preferably, the light emitting surfaces of the adjacent light emitting units 101, 102, and 103 are perpendicular to each other, and have a rectangular shape with one open end in a plan view. As shown in fig. 1, two light emitting units 101 and 102 are oppositely disposed, and another light emitting unit 103 is disposed between the light emitting units 101 and the light emitting surfaces of the light emitting units 102. The light emitting unit 101 and the light emitting unit 102 are arranged oppositely, the light emitting surface of the light emitting unit 101 is opposite to the light emitting surface of the light emitting unit 102, the initial light beams emitted by the light emitting units 101 and 102 are converged by the mirror optical light combining unit 200 to obtain a converged light beam, and the direction of the converged light beam emitted to the outside is perpendicular to the direction of the initial light beam and is parallel to the light emitting surfaces of the light emitting units 101 and 102. A light emitting surface of another light emitting unit 103 interposed between the light emitting units 101, 102 disposed opposite to each other is perpendicular to the direction of the merged light beam, and an initial light beam emitted by the other light emitting unit 103 is overlapped with the merged light beam. The light emitting unit 103 is sandwiched between the light emitting surfaces of the two light emitting units 101 and 102, and is perpendicular to the light emitting surfaces of the light emitting units 101 and 102, and the light emitting surface of the light emitting unit 103 faces the direction of the converged light beam, that is, the light emitting beams of the light emitting units 101, 102, and 103 are aligned to the color through the optical light combining unit 200 and finally emitted in the same direction.
The light emitting units 101, 102, 103 herein may be light emitting chips, such as LED chips, respectively red LEDs, blue LEDs and green LEDs. Correspondingly, as shown in fig. 1, the red light emitting unit (light emitting unit 101) is disposed opposite to the blue light emitting unit (light emitting unit 102), and the light emitting surface of the green light emitting unit (light emitting unit 103) is disposed to intersect with the light emitting surface of the red light emitting unit (light emitting unit 101) and is sandwiched between the blue light emitting unit (light emitting unit 102) and the red light emitting unit (light emitting unit 101).
Next, the optical light combining unit of the present embodiment is specifically described. The optical light combining unit 200 may employ a light combining prism. Specifically, the projection profile of the light emitting units 101, 102, and 103 on the surface opposite to the optical light combining unit 200 is smaller than or equal to the surface profile opposite to the optical light combining unit, so as to ensure that the light emitted by the light emitting units effectively enters the optical light combining unit.
In the application aspect of the self-luminous projection display system of the embodiment, the self-luminous projection display system can be applied to various micro display devices, such as a micro display full color light machine.
To sum up, the utility model discloses a self-luminous projection display system adopts the light that the luminescence unit directly sent different colours to utilize optics to close the light unit and close every luminescence unit emission beam and along same direction transmission, thereby changed the design of traditional back of the body reflection formula projection light path, realized self-luminous projection mode, simplified the light path structure, reduced the volume. Furthermore, the plurality of light-emitting units adopt the design of surrounding the optical light-combining unit, and the emission light beam of each light-emitting unit emits towards the optical light-combining unit, so that the optical light-combining unit can combine the light beams to the same direction and emit outwards.
Although the present invention has been described with reference to the preferred embodiments, which are given by way of illustration only, and not by way of limitation, it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (15)
1. A self-luminous projection display system, comprising:
a plurality of light emitting units for emitting light of different colors;
and the optical light combination unit is arranged on the light path of the light beam emitted by each light emitting unit, combines the light emitted by the plurality of light emitting units and emits the light to the outside along the same direction.
2. The self-luminous projection display system of claim 1, further comprising an optical imaging unit for receiving the light beams from the optical light combining unit and projecting the light beams to the interface in an image-enlarged manner.
3. The self-luminous projection display system of claim 1, wherein a plurality of the light emitting units are disposed around the optical light combining unit, and the emission beam of each light emitting unit is emitted toward the optical light combining unit;
the optical light combination unit combines the light beams emitted by each light emitting unit to the same direction and emits the light beams outwards.
4. The self-luminous projection display system according to claim 3, wherein the number of the light emitting units is three, and extension planes of light emitting faces of adjacent light emitting units intersect with each other.
5. The self-luminous projection display system of claim 4, wherein the luminous faces of adjacent luminous units are perpendicular to each other.
6. The self-luminous projection display system of claim 4, wherein the two light emitting units are disposed opposite to each other, and the light emitting surfaces of the two light emitting units are opposite to each other, and the direction of the combined light beam emitted from the two light emitting units after being combined by the optical light combining unit is perpendicular to the direction of the original light beam and parallel to the light emitting surfaces of the two light emitting units.
7. The self-luminous projection display system of claim 6, wherein the remaining light-emitting units have light-emitting surfaces perpendicular to the direction of the combined light beam, and the initial light beam emitted from the other light-emitting unit coincides with the combined light beam.
8. The self-luminous projection display system according to claim 6, wherein the remaining light-emitting units are sandwiched between and perpendicular to the light-emitting surfaces of the two oppositely disposed light-emitting units; and the light emitting surfaces of the rest of the light emitting units face the direction of the converged light beam.
9. The self-luminous projection display system according to claim 4, wherein each of the light-emitting units is a light-emitting chip.
10. The self-luminous projection display system of claim 4, wherein the three light emitting units are a red light emitting unit, a green light emitting unit, and a blue light emitting unit, respectively.
11. The self-luminous projection display system according to claim 10, wherein the red light emitting unit is disposed opposite to the blue light emitting unit, and a light emitting surface of the green light emitting unit is disposed across a light emitting surface of the red light emitting unit and sandwiched between the blue light emitting unit and the red light emitting unit.
12. The self-luminous projection display system of claim 10, wherein the light emitting units are LEDs.
13. The self-luminous projection display system of claim 1, wherein the optical light combining unit is a light combining prism.
14. The self-luminous projection display system of claim 13, wherein a projection profile of the light-emitting unit on a surface opposite to the optical light-combining unit is smaller than or equal to a profile of the surface opposite to the optical light-combining unit.
15. A micro-display full-color optical machine, comprising the self-luminous projection display system according to any one of claims 1 to 14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920469298.9U CN210109545U (en) | 2019-04-09 | 2019-04-09 | Self-luminous projection display system and micro-display full-color optical machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920469298.9U CN210109545U (en) | 2019-04-09 | 2019-04-09 | Self-luminous projection display system and micro-display full-color optical machine |
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| CN210109545U true CN210109545U (en) | 2020-02-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114280883A (en) * | 2022-01-13 | 2022-04-05 | 北京数字光芯科技有限公司 | Projection structure and projection method capable of improving red light efficiency |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114280883A (en) * | 2022-01-13 | 2022-04-05 | 北京数字光芯科技有限公司 | Projection structure and projection method capable of improving red light efficiency |
| CN114280883B (en) * | 2022-01-13 | 2024-01-12 | 北京数字光芯科技有限公司 | Projection structure and projection method capable of improving red light efficiency |
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