CN103454840A - Projecting apparatus - Google Patents
Projecting apparatus Download PDFInfo
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- CN103454840A CN103454840A CN201210175677XA CN201210175677A CN103454840A CN 103454840 A CN103454840 A CN 103454840A CN 201210175677X A CN201210175677X A CN 201210175677XA CN 201210175677 A CN201210175677 A CN 201210175677A CN 103454840 A CN103454840 A CN 103454840A
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- projection arrangement
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Abstract
The invention discloses a projecting apparatus comprising light source portions, wedge-shaped light pipes, a light-combining prism group, a lighting lens group, a reflective image generator, a total-reflection prism group, a video projection lens group and a projection screen which are all arranged in sequence. The light source portions are used for emitting light, the wedge-shaped light pipes are used for guiding and evening light emitted from the light source portions, the light-combining prism group is used for combining the light passing through the wedge-shaped light pipes, the lighting-lens group is used for converging combined beams emitted from the light-combining prism group, the reflective image generator is used for generating image information, the total-reflection prism group is used for subjecting image light generated from the reflective image generator to total reflection, the video projection lens group is used for receiving totally reflected beams, and the projection screen is used for image formation. By the aid of the projection apparatus, optical components are simplified, manufacturing cost is lowered, and brightness is improved.
Description
Technical field
The present invention relates to a kind of projection arrangement.
Background technology
Along with scientific and technological development, projection display technique is constantly progressive, and projector is widely used in the every field such as commercial affairs, education, home theater.And be accompanied by the development of LED technology, particularly the LED lighting engineering constantly brings forth new ideas, due to the LED superelevation life-span, the LED illumination is also slowly applied to the projection industry, but it is large to be confined to the LED reflecting angle, collimation is difficult, cause effective rate of utilization very low, because White LED brightness is low, at present common LED projection arrangement adopts the LED of 3 monochromes mostly, and collimate at the collimation lens that arranges thereafter 2 to 3, adopt again other all the light mode synthetic light beam is carried out to all light, the unavoidable like this optics that causes is many, complex structure, illumination efficiency is low, projection arrangement integral body is low to the utilization factor of light source, thereby finally caused the brightness of projection arrangement lower.
Summary of the invention
For addressing the above problem, the invention provides a kind of simplification optics, reduce manufacturing cost, improve the projection arrangement of brightness.
For achieving the above object, the invention provides following technical scheme: a kind of projection arrangement, comprise set gradually for luminous light source portion, carry out the wedge shape light pipe of leaded light and even light for the light that light source portion is sent, the light-combining prism group of for the light to through the wedge shape light pipe, being closed light, the illuminating lens group converged for the synthetic light beam that the light-combining prism group is sent, reflective image generator for generation of image information, the total-reflection prism group of for the image light that reflective image generator is produced, carrying out total reflection, for the image projecting lens group that receives described total reflection light beam and for the projection screen of imaging.
Preferably, described light source portion is the LED illuminating part, and described LED illuminating part comprises blue-light-emitting section, green emitting section and emitting red light section.
Preferably, described wedge shape light pipe corresponds respectively to described blue-light-emitting section, green emitting section and emitting red light section and arranges, and the plane of incidence of described wedge shape light pipe is parallel with exit facet and become obtuse angle with lozenges.
Preferably, described light-combining prism group comprises that four are bonded together and triangular prism that shape is complementary, the RDM face that the composition surface of described triangular prism is respectively equipped with the BDM face that allows blu-ray reflection, green glow pass through and allows reflection to red light, green glow pass through; Described BDM face engages in twos; Described RDM face engages in twos; Described blue-light-emitting section and emitting red light section arrange with respect to described BDM face and RDM face with described green emitting section respectively.
Preferably, also be respectively arranged with the collector lens that guarantees that light beam is parallel between described wedge shape light pipe and described light-combining prism group.
Preferably, described illuminating lens group comprises and setting gradually for making the illuminating lens that light beam passes through successively that closes that the light-combining prism group sends.
Preferably, the exit facet of the reflecting surface of described reflective image generator and described wedge shape light pipe is conjugate relation.
Preferably, the surface of described reflective image generator is provided with some tiny mirror with certain reflection angle.
Preferably, described total-reflection prism group comprises that two are bonded together and the prism that mates mutually on composition surface, and the joint of described two prisms is provided with the airspace layer.
Adopt the beneficial effect of above technical scheme to be: at first, because described LED light source illuminating part is arranged at the entrance of wedge shape light pipe, the plane of incidence of wedge shape light pipe is parallel with exit facet, lozenges and plane of incidence angle are 90 degree+α angle (α is greater than 0 degree), the light with angle spread that LED sends is after the inclined-plane Multi reflection of wedge shape light pipe, reflection ray angle diminishes gradually, and approximate collimation plays the effect of uniform light simultaneously; Secondly, described collector lens converges rear one-tenth approximate construction collimated optical beam by the low-angle diffusing light of wedge shape light pipe exit facet.
The accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Wherein, the red collector lens 4-1.RDM of the green collector lens 3-3. of the blue collector lens 3-2. of the red wedge shape light pipe of the blue wedge shape light pipe of the 1-2.LED of the 1-1.LED blue-light-emitting section green emitting 1-3.LED of the section emitting red light 2-1. of section 2-2. green wedge shape light pipe 2-3. 3-1. face 4-2.BDM face 5-1. illuminating lens A 5-2. illuminating lens B 5-3. illuminating lens C 6. total-reflection prism group 6-1. first total reflection prism 6-2. the second total reflection prism 7. reflective image generator 8. image projecting lens group.
Embodiment
Describe the preferred embodiment of the present invention in detail below in conjunction with accompanying drawing.
Embodiment 1
Referring to Fig. 1, as shown in legend wherein, a kind of projection arrangement, comprise setting gradually
For a luminous LED blue-light-emitting 1-1 of section, a LED green emitting 1-2 of section and a LED emitting red light 1-3 of section;
Carry out a blue wedge shape light pipe 2-1, a green wedge shape light pipe 2-2 and a red wedge shape light pipe 2-3 of leaded light and even light for the light that light source portion is sent, described blue wedge shape light pipe 2-1, green wedge shape light pipe 2-2 and red wedge shape light pipe 2-3 correspond respectively to the described LED blue-light-emitting 1-1 of section, the LED green emitting 1-2 of section and the LED emitting red light 1-3 of section and arrange, and the described blue wedge shape light pipe 2-1 plane of incidence is parallel with exit facet and become 100 degree with lozenges; The described green wedge shape light pipe 2-2 plane of incidence is parallel with exit facet and become 100 degree with lozenges; The plane of incidence of described red wedge shape light pipe 2-3 is parallel with exit facet and become 100 degree with lozenges.
Carry out the blue collector lens 3-1 of polymerization, green collector lens 3-2 and red collector lens 3-3 for the light beam to through described blue wedge shape light pipe 2-1, green wedge shape light pipe 2-2 and red wedge shape light pipe 2-3.
For the light-combining prism group that the light after collector lens is closed to light, described light-combining prism group comprises that four are bonded together and triangular prism that shape is complementary, the RDM face 4-1 that the composition surface of described triangular prism is respectively equipped with a BDM face 4-2 who allows blu-ray reflection, green glow pass through and allows reflection to red light, green glow pass through; Described BDM face 4-2 engages in twos; Described RDM face 4-1 engages in twos; The described LED blue-light-emitting 1-1 of section and the LED emitting red light 1-3 of section arrange with respect to described BDM face 4-2 and RDM face 4-1 with the described LED green emitting 1-2 of section respectively;
The illuminating lens group converged for synthetic light beam that the light-combining prism group is sent, described illuminating lens group comprises and setting gradually for making an illuminating lens A 5-1, an illuminating lens B 5-2 and the illuminating lens C 5-3 that light beam passes through successively that close that the light-combining prism group sends;
A reflective image generator 7 for generation of image information, the reflecting surface of described reflective image generator 7 is conjugate relation with the exit facet of described blue wedge shape light pipe 2-1, green wedge shape light pipe 2-2 and red wedge shape light pipe 2-3 respectively, and the surface of described reflective image generator 7 is provided with some tiny mirror with certain reflection angle;
One total-reflection prism group 6 of for the image light that reflective image generator 7 is produced, carrying out total reflection, described total-reflection prism group 6 comprises that two are bonded together and the first total reflection prism 6-1 and the second total reflection prism 6-2 that mate mutually on composition surface, and the joint of the first total reflection prism 6-1 and the second total reflection prism 6-2 is provided with an airspace layer;
For receiving an image projecting lens group 8 of described total reflection light beam.
A projection screen 9 for imaging.
Below introduce principle of work of the present invention.
The described LED blue-light-emitting 1-1 of section, the LED green emitting 1-2 of section and the LED emitting red light 1-3 of section are respectively after the inclined-plane Multi reflection of described blue wedge shape light pipe 2-1, green wedge shape light pipe 2-2 and red wedge shape light pipe 2-3, reflection ray angle diminishes gradually, approximate collimation plays the effect of uniform light simultaneously.
Described blue collector lens 3-1, green collector lens 3-2 and red collector lens 3-3 converge rear one-tenth approximate construction collimated optical beam by the low-angle diffusing light of blue wedge shape light pipe 2-1, green wedge shape light pipe 2-2 and red wedge shape light pipe 2-3 exit facet.
Described light-combining prism group is blueness, green, and red three kinds of approximate construction collimated optical beams are synthetic, allow reflection to red light on prism composition surface (RDM face 4-1), and green glow sees through; Allow blu-ray reflection on prism composition surface (BDM face 4-2), green glow sees through.
Described illuminating lens group converges to the light beam after synthesizing the reflecting surface of reflective image generator 7, in the reflecting surface generation illumination images of reflective image generator 7.
Described reflective image generator 7, its reflecting surface consists of the tiny mirror that much has certain reflection angle, and produces uninterrupted reflection, and light beam produces image strip after its reflecting surface, after the image strip reflection, enters described total-reflection prism group 6.
The composition surface of described the first total-reflection prism group 6-1 and the second total-reflection prism group 6-2 is provided with the airspace of 2mm, when incident angle is greater than critical angle, total reflection occurs on its composition surface in the incident image strip, image strip, after total reflection occurs on prism group composition surface, enters image projecting lens group 8.
Described image projecting lens group 8 is projected to projection screen 9 by image strip, produces image.
Embodiment 2
All the other are identical with described embodiment 1, and difference is, the described blue wedge shape light pipe 2-1 plane of incidence is parallel with exit facet and become 110 degree with lozenges; The described green wedge shape light pipe 2-2 plane of incidence is parallel with exit facet and become 110 degree with lozenges; The plane of incidence of described red wedge shape light pipe 2-3 is parallel with exit facet and become 110 degree with lozenges.
Embodiment 3
All the other are identical with described embodiment 1, and difference is, the described blue wedge shape light pipe 2-1 plane of incidence is parallel with exit facet and become 120 degree with lozenges; The described green wedge shape light pipe 2-2 plane of incidence is parallel with exit facet and become 120 degree with lozenges; The plane of incidence of described red wedge shape light pipe 2-3 is parallel with exit facet and become 120 degree with lozenges.
Adopt the beneficial effect of above technical scheme to be: at first, because described LED light source illuminating part is arranged at the entrance of wedge shape light pipe, the plane of incidence of wedge shape light pipe is parallel with exit facet, lozenges and plane of incidence angle are 90 degree+α angle (α is greater than 0 degree), the light with angle spread that LED sends is after the inclined-plane Multi reflection of wedge shape light pipe, reflection ray angle diminishes gradually, and approximate collimation plays the effect of uniform light simultaneously; Secondly, described collector lens converges rear one-tenth approximate construction collimated optical beam by the low-angle diffusing light of wedge shape light pipe exit facet.
Above-described is only the preferred embodiment of the present invention, it should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise of the invention, can also make some distortion and improvement, and these all belong to protection scope of the present invention.
Claims (9)
1. a projection arrangement, it is characterized in that, comprise set gradually for luminous light source portion, carry out the wedge shape light pipe of leaded light and even light for the light that light source portion is sent, the light-combining prism group of for the light to through the wedge shape light pipe, being closed light, the illuminating lens group converged for the synthetic light beam that the light-combining prism group is sent, reflective image generator for generation of image information, the total-reflection prism group of for the image light that reflective image generator is produced, carrying out total reflection, for the image projecting lens group that receives described total reflection light beam and for the projection screen of imaging.
2. projection arrangement according to claim 1, is characterized in that, described light source portion is the LED illuminating part, and described LED illuminating part comprises blue-light-emitting section, green emitting section and emitting red light section.
3. projection arrangement according to claim 2, it is characterized in that, described wedge shape light pipe corresponds respectively to described blue-light-emitting section, green emitting section and emitting red light section and arranges, and the plane of incidence of described wedge shape light pipe is parallel with exit facet and become obtuse angle with lozenges.
4. projection arrangement according to claim 3, it is characterized in that, described light-combining prism group comprises that four are bonded together and triangular prism that shape is complementary, the RDM face that the composition surface of described triangular prism is respectively equipped with the BDM face that allows blu-ray reflection, green glow pass through and allows reflection to red light, green glow pass through; Described BDM face engages in twos; Described RDM face engages in twos; Described blue-light-emitting section and emitting red light section arrange with respect to described BDM face and RDM face with described green emitting section respectively.
5. projection arrangement according to claim 4, is characterized in that, also is respectively arranged with the collector lens that guarantees that light beam is parallel between described wedge shape light pipe and described light-combining prism group.
6. projection arrangement according to claim 5, is characterized in that, described illuminating lens group comprises and setting gradually for making the illuminating lens that light beam passes through successively that closes that the light-combining prism group sends.
7. projection arrangement according to claim 6, is characterized in that, the exit facet of the reflecting surface of described reflective image generator and described wedge shape light pipe is conjugate relation.
8. projection arrangement according to claim 7, is characterized in that, the surface of described reflective image generator is provided with some tiny mirror with certain reflection angle.
9. projection arrangement according to claim 8, is characterized in that, described total-reflection prism group comprises that two are bonded together and the prism that mates mutually on composition surface, and the joint of described two prisms is provided with the airspace layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210175677XA CN103454840A (en) | 2012-05-31 | 2012-05-31 | Projecting apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210175677XA CN103454840A (en) | 2012-05-31 | 2012-05-31 | Projecting apparatus |
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|---|---|
| CN103454840A true CN103454840A (en) | 2013-12-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210175677XA Pending CN103454840A (en) | 2012-05-31 | 2012-05-31 | Projecting apparatus |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106154716A (en) * | 2014-11-26 | 2016-11-23 | 中强光电股份有限公司 | Illumination system and projection device |
| CN109061997A (en) * | 2018-09-13 | 2018-12-21 | 杭州行开科技有限公司 | A kind of rear-mounted naked eye 3D display system of grating based on direction light source |
| WO2019128096A1 (en) * | 2017-12-29 | 2019-07-04 | 广景视睿科技（深圳）有限公司 | Interactive projection apparatus based on mixed light source |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050168708A1 (en) * | 2004-01-29 | 2005-08-04 | Junejei Huang | Combiner, optical combiner module and digital light projection system using the same |
| CN101248384A (en) * | 2005-02-09 | 2008-08-20 | 微阳有限公司 | Etendue efficient combination of multiple light sources |
| CN201576164U (en) * | 2009-11-13 | 2010-09-08 | 惠州市华阳多媒体电子有限公司 | Micro projector used for 3D display |
| CN202600341U (en) * | 2012-05-31 | 2012-12-12 | 苏州智能泰克有限公司 | Projecting device |
-
2012
- 2012-05-31 CN CN201210175677XA patent/CN103454840A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050168708A1 (en) * | 2004-01-29 | 2005-08-04 | Junejei Huang | Combiner, optical combiner module and digital light projection system using the same |
| CN101248384A (en) * | 2005-02-09 | 2008-08-20 | 微阳有限公司 | Etendue efficient combination of multiple light sources |
| CN201576164U (en) * | 2009-11-13 | 2010-09-08 | 惠州市华阳多媒体电子有限公司 | Micro projector used for 3D display |
| CN202600341U (en) * | 2012-05-31 | 2012-12-12 | 苏州智能泰克有限公司 | Projecting device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106154716A (en) * | 2014-11-26 | 2016-11-23 | 中强光电股份有限公司 | Illumination system and projection device |
| WO2019128096A1 (en) * | 2017-12-29 | 2019-07-04 | 广景视睿科技（深圳）有限公司 | Interactive projection apparatus based on mixed light source |
| CN109061997A (en) * | 2018-09-13 | 2018-12-21 | 杭州行开科技有限公司 | A kind of rear-mounted naked eye 3D display system of grating based on direction light source |
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Application publication date: 20131218 |