CN105137704A - Novel illuminating system and projection light engine using the same - Google Patents
Novel illuminating system and projection light engine using the same Download PDFInfo
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- CN105137704A CN105137704A CN201510571463.8A CN201510571463A CN105137704A CN 105137704 A CN105137704 A CN 105137704A CN 201510571463 A CN201510571463 A CN 201510571463A CN 105137704 A CN105137704 A CN 105137704A
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- light beam
- dichronic mirror
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Abstract
The invention relates to a novel illuminating system and a projection light engine (100) using the same. The projection light engine includes an illuminating system (200), a dodging system (300), a display chip (400) and a projection lens (500). The illuminating system (200) includes a first light-emitting chip (211), a second light-emitting chip (212), a third light-emitting chip (213), a first collimator (221), a second collimator (222), a third collimator (223), a first dichroic mirror (231), a second dichroic mirror (232) and a relay lens (240); and the light system (300) includes an integrator (310), a reflector (320), a condensing lens (330) and a total reflection prism (340). The projection light engine provided by the invention has the advantages that the size is small, the space occupation rate is low, filtering loss of dichroic coatings is greatly reduced, the utilization rate of optical energy is improved, and light output of a system is improved.
Description
Technical field:
The present invention relates to a kind of Novel illuminating system and use the projection light engines of this system, particularly relate to a kind ofly have that volume is little, space occupancy is low, improve the efficiency of light energy utilization, a kind of Novel illuminating system of the advantage such as the light output of elevator system and use the projection light engines of this system.
Background technology:
In recent years, along with the fast development of many technology such as microelectronics, optics, processing technology, and the increasing of the universal and hand-held digital product of modern business mobile office pattern, the microminiaturized new direction becoming again projection display technique development.Minitype projection machine has light and handy and easy to use grade for remarkable advantage, and can combine with all kinds of consumption electronic product, this makes the application of micro projection become infinitely wide.
Traditional micro projection photo engine adopts X-Cube prism (US6018418) and two two to synthesize an illumination path to the method for dichronic mirror to realize three-primary color LED three light paths substantially.X-Cube compact conformation, light collection rate is higher, but its conjunction colour efficiency is lower, and with high costs.And two dichroic mirror (DichroicMirror, DM) structure is simple, arrangement mode is flexible, and with low cost, and therefore to make a basket two dichroic mirror Application comparison extensive micro-.But the problem that two dichroic mirror can bring volume bigger than normal, and high angle scattered light incidence cause can bring larger filtering expense by wave length shift.
The present invention proposes a kind of novel illuminator and projection light engines, while reduction volume, can significantly improve the filtering expense caused by wave length shift.
Accompanying drawing illustrates:
Fig. 1 embodiment (1) index path
Fig. 2 embodiment (2) index path
Fig. 3 embodiment (3) index path
In Fig. 4 embodiments of the invention, two to the spectrum schematic diagram of dichronic mirror under different incidence angles degree
Embodiment:
Set forth a kind of Novel illuminating system below by way of three embodiments and use the design advantage of projection light engines (100) of this system.
Fig. 1 is embodiment (1) index path.As shown in Figure 1, described a kind of Novel illuminating system and use the projection light engines of this system (100) to comprise illuminator (200), even photosystem (300), display chip (400) and projection lens (500).
Described illuminator (200) comprises the first luminescence chip (211), the second luminescence chip (212), the 3rd luminescence chip (213), first collimator (221), the second collimating apparatus (222), the 3rd collimating apparatus (223), the or two to dichronic mirror (231), the two or two to dichronic mirror (232) and relay lens (240).
Described even photosystem (300) comprises integrator (310), catoptron (320), collector lens (330) and total reflection prism (340).
The first light beam (251) that first luminescence chip (211) sends in embodiment (1) by first collimator (221) collimation after, successively through the one or two to dichronic mirror (231), relay lens (240), the two or two to dichronic mirror (232); The second light beam (252) that second luminescence chip (212) sends is collimated by the second collimating apparatus (222), then to be less than the incident angles of 45 degree to the one or two to dichronic mirror (231), and by the one or two to dichronic mirror (231) reflection, pass through relay lens (240), the two or two after synthesizing the complementary color light beam of the 3rd light beam (253) with the first light beam (251) successively to dichronic mirror (232); The 3rd light beam (253) that 3rd luminescence chip (213) sends is collimated by the 3rd collimating apparatus (223), then to be less than 45 degree of incident angles to the two or two to dichronic mirror (232), and by the two or two to dichronic mirror (232) reflection, with the first light beam (251), the second light beam (252) synthesize white light illuminating bundle.The illuminating bundle of synthesis incides on integrator (310) along optical axis.Be integrated the light beam after device (310) homogenising again by catoptron (320) folded optical path, and a right-angle side through total reflection prism (340) after collector lens (330) converges arrives display chip (400).Illuminating bundle returns total reflection prism (340) be once again loaded image information on display chip (400) after and is totally reflected to another right-angle side, then via projection lens (500) projection imaging.
It should be noted that in addition and can make various amendment to meet various demand for projection light engines of the present invention (100).Such as, the first luminescence chip (211), the second luminescence chip (212), the 3rd luminescence chip (213) can be light-emitting diodes light, also can be laser diodes (LaserDiode, LD); The relative position of three-color light-emitting chip can be changed, adopt two of different performance to realize assorted light path to dichronic mirror and integrate; First collimator (221), the second collimating apparatus (222), the 3rd collimating apparatus (223) can be lens or lens combination or compound parabolic concentrator (CompoundParabolicConcetrator, etc. CPC) can be used for collecting luminous energy, the optical device of collimated ray; Integrator (310) can adopt lens arra that square rod also can be adopted to carry out homogenising light beam; Display chip (400) can adopt digital micro-mirror (DigitalMicromirrorDevice, DMD) also can use liquid crystal on silicon (LiquidCrystalonSilicon, LCoS).
Fig. 2 is embodiment (2) index path, after first light beam (251) of the present invention and the second light beam (252) reflect after the one or the two complementary color light beam synthesizing the 3rd light beam (253) to dichronic mirror (231) on the second dichronic mirror 232 as shown in Figure 2, synthesize white illumination beam with the 3rd light beam (253).
Fig. 3 is embodiment (3) index path, and illuminating bundle of the present invention is directly incident on collector lens (330) by after integrator (310) as shown in Figure 3, eliminates catoptron (320).
Fig. 4 is two to the spectrum schematic diagram of dichronic mirror under different incidence angles degree in embodiments of the invention; as shown in Figure 4; for the dichroic coating system of routine; the angle of incident light is larger; its 50% cutoff wavelength more moves toward shortwave direction, and angle change 5 degree can bring the drift of more than 5nm usually, after particularly more than 45 degree; often increasing by 5 degree of incident angles even can bring the shortwave of more than 10nm to drift about, and forms filtering expense.The reduction light beam angle incided on dichronic mirror is less than 45 degree and the filtering expense of dichroic coating can be made to greatly reduce, and improves the efficiency of light energy utilization, the light output of elevator system.
In sum, in the illuminator of embodiments of the invention, because the first dichronic mirror and the second dichronic mirror are owing to becoming to be less than miter angle with optical axis, therefore can reduce space occupancy, reduce volume.The angle that three primary colours light beam incides on dichronic mirror in addition is also less than 45 degree, therefore makes the filtering expense of dichroic coating greatly reduce, improves the efficiency of light energy utilization, the light output of elevator system.
The foregoing is only better embodiment of the present invention; but; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and instructions just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (5)
1. a Novel illuminating system and use the projection light engines (100) of this system, comprises illuminator (200), even photosystem (300), display chip (400) and projection lens (500).
2. Novel illuminating system as claimed in claim 1 and use the projection light engines (100) of this system, is characterized in that: described illuminator (200) comprising: the first luminescence chip (211), the second luminescence chip (212), the 3rd luminescence chip (213), first collimator (221), the second collimating apparatus (222), the 3rd collimating apparatus (223), the or two are to dichronic mirror (231), the two or two to dichronic mirror (232) and relay lens (240).
3. Novel illuminating system as claimed in claim 1 and use the projection light engines (100) of this system, is characterized in that: described even photosystem (300) comprising: integrator (310), catoptron (320), collector lens (330) and total reflection prism (340).
4. illuminator (200) as claimed in claim 2, it is characterized in that: the first light beam (251) that the first luminescence chip (211) sends by first collimator (221) collimation after, successively through the one or two to dichronic mirror (231), relay lens (240), the two or two to dichronic mirror (232); The second light beam (252) that second luminescence chip (212) sends is collimated by the second collimating apparatus (222), then to be less than the incident angles of 45 degree to the one or two to dichronic mirror (231), and by the one or two to dichronic mirror (231) reflection, pass through relay lens (240), the two or two after synthesizing the complementary color light beam of the 3rd light beam (253) with the first light beam (251) successively to dichronic mirror (232); The 3rd light beam (253) that 3rd luminescence chip (213) sends is collimated by the 3rd collimating apparatus (223), then to be less than 45 degree of incident angles to the two or two to dichronic mirror (232), and by the two or two to dichronic mirror (232) reflection, with the first light beam (251), the second light beam (252) synthesize white light illuminating bundle.
5. even photosystem (300) as claimed in claim 3, is characterized in that: the illuminating bundle that the first light beam (251), the second light beam (252) and the 3rd light beam (253) synthesize incides on integrator (310) along optical axis.Be integrated the light beam after device (310) homogenising again by catoptron (320) folded optical path, and a right-angle side through total reflection prism (340) after collector lens (330) converges arrives display chip (400).Illuminating bundle returns total reflection prism (340) be once again loaded image information on display chip (400) after and is totally reflected to another right-angle side, then via projection lens (500) projection imaging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510571463.8A CN105137704A (en) | 2015-09-10 | 2015-09-10 | Novel illuminating system and projection light engine using the same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510571463.8A CN105137704A (en) | 2015-09-10 | 2015-09-10 | Novel illuminating system and projection light engine using the same |
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| Publication Number | Publication Date |
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| CN105137704A true CN105137704A (en) | 2015-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510571463.8A Pending CN105137704A (en) | 2015-09-10 | 2015-09-10 | Novel illuminating system and projection light engine using the same |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110703542A (en) * | 2018-07-09 | 2020-01-17 | 宁波舜宇车载光学技术有限公司 | DLP projection system and application thereof |
| CN112882230A (en) * | 2019-11-29 | 2021-06-01 | 宁波舜宇车载光学技术有限公司 | Optical system and method for eliminating color fringes |
| CN113568263A (en) * | 2021-06-29 | 2021-10-29 | 电子科技大学 | Lighting system for improving collimation efficiency based on Fresnel lens |
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| CN201804203U (en) * | 2010-08-04 | 2011-04-20 | 福州高意通讯有限公司 | Projection display system |
| CN102216847A (en) * | 2008-11-13 | 2011-10-12 | Lg电子株式会社 | Projection system |
| CN202049326U (en) * | 2010-12-23 | 2011-11-23 | 利达光电股份有限公司 | DLP (digital light processing) projection optical system based on planar LED light source |
| CN102789122A (en) * | 2012-07-17 | 2012-11-21 | 利达光电股份有限公司 | DLP (digital light processing) projection optical system based on LED (light-emitting diode) light source |
| CN202837791U (en) * | 2012-08-30 | 2013-03-27 | 广景科技有限公司 | DLP mini projector |
| KR20140003060A (en) * | 2012-06-29 | 2014-01-09 | 파워옵틱스 주식회사 | Projector module |
| CN104090454A (en) * | 2014-08-06 | 2014-10-08 | 张建平 | Projection optical engine |
| CN205121146U (en) * | 2015-09-10 | 2016-03-30 | 深圳市点睛创视技术有限公司 | Novel lighting system and use projection photo engine of this system |
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2015
- 2015-09-10 CN CN201510571463.8A patent/CN105137704A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102216847A (en) * | 2008-11-13 | 2011-10-12 | Lg电子株式会社 | Projection system |
| CN201804203U (en) * | 2010-08-04 | 2011-04-20 | 福州高意通讯有限公司 | Projection display system |
| CN202049326U (en) * | 2010-12-23 | 2011-11-23 | 利达光电股份有限公司 | DLP (digital light processing) projection optical system based on planar LED light source |
| KR20140003060A (en) * | 2012-06-29 | 2014-01-09 | 파워옵틱스 주식회사 | Projector module |
| CN102789122A (en) * | 2012-07-17 | 2012-11-21 | 利达光电股份有限公司 | DLP (digital light processing) projection optical system based on LED (light-emitting diode) light source |
| CN202837791U (en) * | 2012-08-30 | 2013-03-27 | 广景科技有限公司 | DLP mini projector |
| CN104090454A (en) * | 2014-08-06 | 2014-10-08 | 张建平 | Projection optical engine |
| CN205121146U (en) * | 2015-09-10 | 2016-03-30 | 深圳市点睛创视技术有限公司 | Novel lighting system and use projection photo engine of this system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110703542A (en) * | 2018-07-09 | 2020-01-17 | 宁波舜宇车载光学技术有限公司 | DLP projection system and application thereof |
| CN112882230A (en) * | 2019-11-29 | 2021-06-01 | 宁波舜宇车载光学技术有限公司 | Optical system and method for eliminating color fringes |
| CN113568263A (en) * | 2021-06-29 | 2021-10-29 | 电子科技大学 | Lighting system for improving collimation efficiency based on Fresnel lens |
| CN113568263B (en) * | 2021-06-29 | 2022-08-19 | 电子科技大学 | Lighting system for improving collimation efficiency based on Fresnel lens |
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Application publication date: 20151209 |
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