CN201589089U - Mixed type RGB light generator and optical projection engine using the same - Google Patents
Mixed type RGB light generator and optical projection engine using the same Download PDFInfo
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- CN201589089U CN201589089U CN2009202058497U CN200920205849U CN201589089U CN 201589089 U CN201589089 U CN 201589089U CN 2009202058497 U CN2009202058497 U CN 2009202058497U CN 200920205849 U CN200920205849 U CN 200920205849U CN 201589089 U CN201589089 U CN 201589089U
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Abstract
A mixed type RGB light generator comprises an independently-encapsulated red light LED chip, an independently-encapsulated green light LED chip and an independently-encapsulated blue light LED chip, wherein at least one of the independently-encapsulated LED chips is a single chip, and at least one of the independently-encapsulated LED chips is a multiple chip. In the utility model, as a plurality of small LED chips replace a traditional large LED chip, the brightness ratio of the blue light emitted by the blue light LED chip, the red light emitted by the red light LED chip and the green light emitted by the green light LED chip meets the requirement of the formation of white light, and meanwhile, the production cost of the RGB light generator is effectively reduced. Besides, the utility model further provides an optical projection engine adopting the mixed type RGB light generator.
Description
Technical field
The utility model relates to lighting source and projection display technique, relates in particular to a kind of mixed type RGB illuminating light source device and uses its projecting optical engine.
Background technology
Lighting source is one of liquid crystal projector important components, and its brightness, light utilization efficiency and caloric value directly have influence on problems such as the power consumption, projector's operation and maintenance cost of quality, the projector of projected image.In the past, most of projectors all adopt ultrahigh pressure mercury lamp (UHP) or Metal halogen lamp as light source, though this class light source brightness can meet the demands, but its power consumption high life is short, and light conversion efficiency is lower, and caloric value is big, and can pollute environment, therefore not to be well suited for as projection light source.Nowadays, increasing liquid crystal projector is all brought into use environmental protection, light emitting diode that conversion efficiency is high (LightEmitting Diode is LED) as light source.
At present, have multiplely as the implementation method of the white light LEDs of light source, wherein a kind of method is that multiple monochromatic light mixes the generation white light.For example: Luminus Devices releases three primary colours (RGB) chipset that aims at miniscope (comprising application such as high brightness pouch-type projector, the intelligent projection display and general illumination) design, use red LED chips, green LED chip and the blue led chip of individual packages, that every LEDs is is single, high brightness, large scale individual circuit chip, can bear great power and quickflashing.When three kinds of chips incorporate, chipset can produce the white light of high brightness under pulse mode, satisfies the demand of crystal projection etc.Yet the chip that this RGB chipset is adopted is high brightness, large chip LED, costs an arm and a leg, and makes the cost of manufacture of lighting source higher, and then causes the cost of crystal projection higher relatively, has limited the development of crystal projection.
The utility model content
The technical problems to be solved in the utility model provides the low mixed type RGB illuminating light source device of a kind of cost.
In addition, also need provide the projecting optical engine that a kind of cost is lower, Projection Display is effective.
Goal of the invention of the present utility model is achieved through the following technical solutions:
A kind of mixed type RGB illuminating light source device comprises the red LED chip of independent encapsulation, the green light LED chip of encapsulation separately and the blue-light LED chip that encapsulates separately.Wherein, at least a independent encapsulated LED chip is a single-chip, and at least a independent encapsulated LED chip is the multicore sheet.
A kind of projecting optical engine comprises little display floater, projection lens and above-mentioned described mixed type RGB illuminating light source device.Wherein, little display floater is modulated incident light, and modulates the image light that carries image information.Projection lens is used for the visual information projection on described little display floater is imaged onto screen.Mixed type RGB illuminating light source device shines described little display floater.
Mixed type RGB illuminating light source device of the present utility model, substitute traditional big led chip with a plurality of little led chips, make blue light that blue-light LED chip sends, ruddiness that red LED chip sends, and the brightness ratio of the green glow that sends of green light LED chip when meeting the requirement of forming white light, effectively reduce the cost of manufacture of RGB illuminating light source device.And use the projecting optical engine of this illuminating light source device, little display floater is penetrated in the illumination of the high brightness of mixed type RGB illuminating light source device outgoing, afterwards, modulate image light by little display floater, output to external screen from projection lens, simple in structure, efficiency of light energy utilization height, production cost is lower, and Projection Display is effective.
Description of drawings
In order to be easy to explanation, the utility model is done to describe in detail by following preferred embodiment and accompanying drawing.
Fig. 1 a is the structural representation of the mixed type RGB illuminating light source device of the utility model first embodiment.
Fig. 1 b is the plan structure schematic diagram of Fig. 1 a chips group.
Fig. 2 is the structural representation of the mixed type RGB illuminating light source device of the utility model second embodiment.
Fig. 3 is the structural representation of the mixed type RGB illuminating light source device of the utility model the 3rd embodiment.
Fig. 4 is the planar structure schematic diagram of projecting optical engine of the present utility model.
The specific embodiment
Fig. 1 a is depicted as the structural representation of the mixed type RGB illuminating light source device of the utility model first embodiment, consults Fig. 1 b simultaneously, is the plan structure schematic diagram of Fig. 1 a chips group.Mixed type RGB illuminating light source device comprises the red LED chip 10 of independent encapsulation, the green light LED chip 11 of encapsulation separately and the blue-light LED chip 12 that encapsulates separately.Wherein, at least a independent encapsulated LED chip is a single-chip, and at least a independent encapsulated LED chip is the multicore sheet.And the light-emitting area of each chip in the multicore sheet is all less than the light-emitting area of single-chip.
In the utility model embodiment, red LED chip 10 is large chip LED with green light LED chip 11.The large chip LED of indication is meant big light-emitting area, high luminosity and high-power LED chip herein.In the specific embodiment, single-chip is single green light LED chip 11, and the model of green light LED chip 11 is identical with the model of red LED chip 10, and in other words, the quantity of the quantity of red LED chip 10 and green light LED chip 11 is one.For example: red LED chip 10 all uses the large chip LED of the model of a Luminus company as PT39 with green light LED chip 11.
In the utility model embodiment, the multicore sheet is a plurality of blue-light LED chips.Be series connection, the layout that is square (consulting Fig. 1 b) between the multicore sheet; Adopt the mode of series connection, the electric current that flows through each chip is equated, and luminosity is even.Again, the light-emitting area of each blue-light LED chip 12 is all less than the light-emitting area of single-chip (as: red LED chip 10 or green light LED chip 11).
In other embodiment of the utility model, can also be in parallel or series connection and in parallel combining between the multicore sheet.In addition, the multicore sheet can also rounded layout or triangular arrangement.
Usually, at multiple monochromatic light (for example: RGB) mix in the mode that produces white light, the requirement of the brightness of blue light often is lower than the brightness requirement of green glow and ruddiness, and for example: the brightness ratio of green glow, ruddiness, blue light is 5: 3: 1 or 6: 3: 1, can form white light.Therefore, in the utility model embodiment, substitute traditional big blue-light LED chip with a plurality of little blue-light LED chips, make blue light that blue-light LED chip sends, ruddiness that red LED chip sends, and the brightness ratio of the green glow that sends of green light LED chip when meeting the requirement of forming white light, effectively reduce the cost of manufacture of RGB illuminating light source device.
In addition, also be coated with transparent enclosure colloid (not shown) on the multicore sheet, the refractive index of this packing colloid is greater than the refractive index of air, and the while is less than the refractive index of institute's coating chip; Adopt the transparent enclosure colloid, dwindle the refractive index difference of critical mass on the one hand, effectively reduced the loss of photon, improved light extraction efficiency at the interface; On the other hand, this packing colloid is coating chip, gold thread simultaneously, carries out mechanical protection, improves the reliability of chip encapsulation.In the utility model embodiment, the vertical section of packing colloid is parabolic, and packing colloid is a silica gel.
In the utility model, mixed type RGB illuminating light source device also comprises many group shaping mirror groups 20 and closes look mirror 30.Wherein, many group shaping mirror groups 20 cover red LED chip 10, green light LED chip 11, the blue-light LED chip 12 of independent encapsulation respectively, and the light beam of the different-waveband that red LED chip 10, green light LED chip 11, blue-light LED chip 12 are sent is collected and shaping.Closing the light beam that look mirror 30 is used to merge the different-waveband that red LED chip 10, green light LED chip 11, blue-light LED chip 12 sent is a branch of light.
In the utility model embodiment, close look mirror 30 and be X-type color combination lens (X-mirror), be arranged at the intersection of the light emitting light path of red LED chip 10, green light LED chip 11 and blue-light LED chip 12, it comprises and is configured to forked first flat board, 301, the second dull and stereotyped the 302 and the 3rd flat boards 303.And first flat board, 301, the second dull and stereotyped the 302 and the 3rd dull and stereotyped 303 surfaces all are coated with film (not indicating among the figure).
X-type color combination lens also can adopt four plate pack to synthesize cross shaped head, and certainly, X-type color combination lens 30 ' also can use prism-like X-type color combination lens (X-cube) to replace (consulting Fig. 2), repeats no more here.
Figure 3 shows that the structural representation of the mixed type RGB illuminating light source device of the utility model the 3rd embodiment.The structure of this mixed type RGB illuminating light source device and the structure of first embodiment are basic identical, the difference be that the look mirror that closes shown in Figure 3 comprises two dichroscopes 301 ", 302 ", be obliquely installed respectively in the intersection of the light emitting light path of red LED chip 10, green light LED chip 11, blue-light LED chip 12.
Say first dichroscope 301 in detail " be obliquely installed in the intersection of the light emitting light path of red LED chip 10, green light LED chip 11, be used for the transmit red light light beam, the reflect green light light beam.Second dichroscope 302 " be obliquely installed on the light emitting light path of blue-light LED chip 12, and be parallel to first dichroscope 301 ", be used for the transmit blue bundle, reflect red light beam, green beam.
Figure 4 shows that the planar structure schematic diagram of the utility model projecting optical engine.Projecting optical engine comprises the mixed type RGB illuminating light source device of above-mentioned arbitrary embodiment, polarizing beam splitter 40, little display floater 50 and projection lens 60.Wherein, mixed type RGB illuminating light source device shines little display floater 50.
Polarizing beam splitter 40 is arranged on the output light path of mixed type RGB illuminating light source device, in the utility model embodiment, polarizing beam splitter 40 is the lens type polarizing beam splitter, compose cube shaped by two triangular prisms, be coated with the polarization spectro rete therebetween on the contact-making surface, form a polarization light-dividing surface by this polarization spectro rete, this polarization light-dividing surface can be converted to non-polarized light polarised light and isolate the S polarised light and the P polarised light.Certainly, polarizing beam splitter 40 also can compose other shape by other prism, is converted into the polarised light outgoing as long as satisfy the non-polarized light of incident.
In other embodiment of the utility model, this polarizing beam splitter 40 also can be replaced by flat polarizing beam splitter.
Consult Fig. 4, the quantity of little display floater 50 is one, is arranged at a non-adjacent side of polarizing beam splitter 40 and mixed type RGB illuminating light source device, is used for received incident light is modulated, and modulates the image light that carries image information.In the utility model embodiment, little display floater 50 is reflective type silicon-based liquid crystal panel (Liquid Crystal on Silicon, LCOS), when the light that receives when little display floater 50 is the S polarised light, through after the modulation of little display floater 50, then reflect another polarised light P polarised light that carries image information, behind polarizing beam splitter 40 folded optical paths, with this P polarized light transmission to projection lens 60.Projection lens 60 and little display floater 50 opposing parallel settings in the embodiment of the present utility model are used for the visual information projection on little display floater 50 is imaged onto screen.
In other embodiment of the utility model, the received polarised light of little display floater 50 ' (shown in the dotted line of Fig. 4) also can be the P polarised light, through after the modulation of little display floater 50 ', be converted to the S polarised light that carries image information, and on its reflected back polarizing beam splitter 40, this S polarised light is reflexed on the projecting lens 60 by polarizing beam splitter 40.In other words, a projecting lens 60 and little display floater a 50 ' adjacent side that is arranged at polarizing beam splitter 40, that is, projecting lens 60 is arranged at respectively on the adjacent two sides of polarizing beam splitter 40 with little display floater 50 '.At this moment, projecting lens 60 is to be used to receive and throw the S polarised light that carries image information.
Therefore, the projecting optical engine of present embodiment, the light of the high brightness of mixed type RGB illuminating light source device outgoing shines little display floater, afterwards by the polarization separation of polarizing beam splitter, little display floater modulates image light and enters polarizing beam splitter once more, output to external screen by polarizing beam splitter from projection lens, simple in structure, efficiency of light energy utilization height, production cost is lower, and Projection Display is effective.
The specific embodiment of the above is a better embodiment of the present utility model, be not to limit concrete practical range of the present utility model with this, scope of the present utility model comprises and is not limited to this specific embodiment, for example, the model of red LED chip, the model of quantity and green light LED chip, quantity also can be different: the green light LED chip still uses large chip LED, but red LED chip does not then use large chip LED, and the cheaply little led chip of employing, its quantity is a plurality of, and the light-emitting area of each red LED chip is all less than the light-emitting area of green light LED chip.In other words, the multicore sheet also can be a plurality of red LED chips.The structure of a plurality of red LED chips and the structure of aforementioned a plurality of blue-light LED chips are basic identical, repeat no more here.When the multicore sheet was a plurality of red LED chip, blue-light LED chip can be the multicore sheet, also can be single-chip.Therefore, the utility model adopts a plurality of little led chips to substitute traditional big led chip, make blue light that blue-light LED chip sends, ruddiness that red LED chip sends, and the brightness ratio of the green glow that sends of green light LED chip when meeting the requirement of forming white light, effectively reduce the cost of manufacture of RGB illuminating light source device.Again, little display floater be transmissive liquid crystal panel (Liquid Crystal Display, LCD), at this moment, omit polarizing beam splitter, transmissive liquid crystal panel is arranged on the emitting light path of mixed type RGB illuminating light source device, incident light is modulated, and transmitted the light that carries image information.The equivalence variation that all shapes according to the utility model, structure are done all comprises in the protection domain of the present utility model.
Claims (20)
1. mixed type RGB illuminating light source device, comprise the red LED chip of independent encapsulation, the green light LED chip of encapsulation separately and the blue-light LED chip that encapsulates separately, it is characterized in that, at least a independent encapsulated LED chip is a single-chip, and at least a independent encapsulated LED chip is the multicore sheet.
2. mixed type RGB illuminating light source device according to claim 1 is characterized in that, the light-emitting area of each chip in the described multicore sheet is all less than the light-emitting area of single-chip.
3. mixed type RGB illuminating light source device according to claim 1 and 2 is characterized in that, described multicore sheet is a plurality of blue-light LED chips.
4. mixed type RGB illuminating light source device according to claim 1 and 2 is characterized in that, is series connection between the described multicore sheet.
5. mixed type RGB illuminating light source device according to claim 1 and 2 is characterized in that, is in parallel between the described multicore sheet or series connection and in parallel combining.
6. mixed type RGB illuminating light source device according to claim 1 and 2 is characterized in that, described multicore sheet be square layout, circular arrangement or triangular arrangement.
7. mixed type RGB illuminating light source device according to claim 1 and 2 is characterized in that, also is coated with the transparent enclosure colloid on the described multicore sheet, and the refractive index of described packing colloid is greater than the refractive index of air, and the while is less than the refractive index of institute's coating chip.
8. mixed type RGB illuminating light source device according to claim 7 is characterized in that, the vertical section of described packing colloid is parabolic.
9. mixed type RGB illuminating light source device according to claim 7 is characterized in that, described packing colloid is a silica gel.
10. mixed type RGB illuminating light source device according to claim 1 and 2 is characterized in that, described single-chip is single green light LED chip.
11. mixed type RGB illuminating light source device according to claim 10 is characterized in that, the model of described green light LED chip is identical with the model of described red LED chip.
12. mixed type RGB illuminating light source device according to claim 1 and 2 is characterized in that, described multicore sheet is a plurality of red LED chips.
13. mixed type RGB illuminating light source device according to claim 1 and 2, it is characterized in that, also comprise many group shaping mirror groups, cover red LED chip, green light LED chip, the blue-light LED chip of independent encapsulation respectively, the light beam of the different-waveband that red LED chip, green light LED chip, blue-light LED chip are sent is collected and shaping.
14. mixed type RGB illuminating light source device according to claim 1 and 2 is characterized in that, also comprises and closes the look mirror, the light beam that is used to merge the different-waveband that red LED chip, green light LED chip, blue-light LED chip sent is a branch of light.
15. mixed type RGB illuminating light source device according to claim 14 is characterized in that, the described look mirror that closes is an X-type color combination lens, is arranged at the intersection of the light emitting light path of red LED chip, green light LED chip and blue-light LED chip.
16. mixed type RGB illuminating light source device according to claim 15 is characterized in that, described X-type color combination lens is tabular X-type color combination lens or prism-like X-type color combination lens.
17. mixed type RGB illuminating light source device according to claim 14 is characterized in that, the described look mirror that closes comprises two dichroscopes, is obliquely installed respectively in the intersection of the light emitting light path of red LED chip, green light LED chip, blue-light LED chip.
18. a projecting optical engine comprises:
Little display floater is modulated incident light, and modulates the image light that carries image information;
Projection lens is used for the visual information projection on described little display floater is imaged onto screen;
It is characterized in that described projecting optical engine also comprises:
According to any described mixed type RGB illuminating light source device in the claim 1 to 17.
19. projecting optical engine according to claim 18 is characterized in that, described little display floater is LCOS, also is provided with polarizing beam splitter on its input path.
20. projecting optical engine according to claim 18 is characterized in that, described little display floater is LCD.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202058497U CN201589089U (en) | 2009-10-26 | 2009-10-26 | Mixed type RGB light generator and optical projection engine using the same |
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| CN2009202058497U CN201589089U (en) | 2009-10-26 | 2009-10-26 | Mixed type RGB light generator and optical projection engine using the same |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013056594A1 (en) * | 2011-10-17 | 2013-04-25 | 深圳市绎立锐光科技开发有限公司 | Light source and display system |
| CN103440825A (en) * | 2013-08-20 | 2013-12-11 | 邓伟廷 | Multi-dimensional LED display screen |
| WO2016106924A1 (en) * | 2014-12-31 | 2016-07-07 | 深圳市华星光电技术有限公司 | White light led module |
| WO2018072637A1 (en) * | 2016-10-20 | 2018-04-26 | 深圳市光峰光电技术有限公司 | Projection apparatus |
-
2009
- 2009-10-26 CN CN2009202058497U patent/CN201589089U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013056594A1 (en) * | 2011-10-17 | 2013-04-25 | 深圳市绎立锐光科技开发有限公司 | Light source and display system |
| US10585293B2 (en) | 2011-10-17 | 2020-03-10 | Appotronics Corporation Limited | Light source and display system |
| CN103440825A (en) * | 2013-08-20 | 2013-12-11 | 邓伟廷 | Multi-dimensional LED display screen |
| CN103440825B (en) * | 2013-08-20 | 2016-01-27 | 邓伟廷 | Multi-dimensional LED display screen |
| WO2016106924A1 (en) * | 2014-12-31 | 2016-07-07 | 深圳市华星光电技术有限公司 | White light led module |
| WO2018072637A1 (en) * | 2016-10-20 | 2018-04-26 | 深圳市光峰光电技术有限公司 | Projection apparatus |
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Address after: Cui Jing Road Shenzhen City, Guangdong province 518118 Pingshan New District No. 35 No. 1 Building 6 East Patentee after: Butterfly Technology (Shenzhen) Limited Address before: 518055, Guangdong, Nanshan District hi tech Industrial Park, Shenzhen District North West Road, No. 5, Galaxy Fengyun building, 3 floor Patentee before: Butterfly Technology (Shenzhen) Limited |
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Granted publication date: 20100922 |