CN104062838A - Interactive projection optical system and working method thereof - Google Patents
Interactive projection optical system and working method thereof Download PDFInfo
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- CN104062838A CN104062838A CN201410322875.3A CN201410322875A CN104062838A CN 104062838 A CN104062838 A CN 104062838A CN 201410322875 A CN201410322875 A CN 201410322875A CN 104062838 A CN104062838 A CN 104062838A
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Abstract
The invention discloses an interactive projection optical system and a working method of the interactive projection optical system. The interactive projection optical system is integrated with an infrared lighting device sharing a projection optical engine optical path with the system, an infrared lighting area and a protection display area coincide completely, and area dislocation between infrared lighting and projection pictures under different projection distances can be avoided; meanwhile, optical power of a three-primary-color light source and optical power of an infrared light source are effectively utilized under the situation of low cost; in addition, an interactive projection product can be applied only by selecting a proper infrared shooting device without additionally considering matching and adjustment of the infrared lighting device.
Description
Technical field
The present invention relates to interaction field, relate in particular to a kind of interaction optical system and method for work thereof.
Background technology
In the interactive projection device of prior art, infrared illuminator, projecting optical engine and infrared eye are separate modules, be assembled to respectively on projector's complete machine, and make infrared illumination region and infrared photography region all cover Projection Display region by adjustment.Infrared eye, can be obtained by infrared eye by scattering infrared illumination light when interactive target (people, teacher's pointer etc.) time appears in Projection Display region not to projection display picture imaging by optical filter.
For the separate interactive projection system of infrared illuminator, projecting optical engine and infrared eye, its infrared illumination light and projection ray's disalignment, at projector distance hour, larger surplus will be made in its infrared illumination region could all cover view fields, as shown in Figure 1.In addition, due to common projection arrangement Dou Shili axial projection, if the light utilization ratio of infrared illuminator will reach higher level, infrared illumination region evenly and the covering Projection Display region of the little surplus of trying one's best needs comparatively complex optical path structure to realize.
Summary of the invention
The technical problem to be solved in the present invention is, for there is the defect in wrong district in the non-coaxial infrared illumination situation of prior art, provide a kind of interaction optical system and the method for work thereof that can avoid infrared illumination and projected picture Cuo district problem under different projector distances.
The technical solution adopted for the present invention to solve the technical problems is: a kind of interaction optical system is provided, and an integrated infrared illuminator, described infrared illuminator and described projection optical system share projecting optical engine light path; Described interaction optical system specifically comprises three primary light source and illumination path thereof; Infrared light supply and illumination path thereof; Light valve; The even light shaping illumination path of compound eye; Illumination imaging light splitting combined prism; Three dichroic coated glass sheets and from axial projection's imaging lens; Wherein:
The even light shaping illumination path of described compound eye combines formed light path by plus lens group and fly's-eye lens, for the inhomogeneous hot spot of the circle that enters described fly's-eye lens being converted to the rectangular uniform light spots at light valve place;
Described dichroic coated glass sheet, for three primary colours illumination path and infrared illumination light path is overlapping, is formed on the coaxial evenly rectangular illumination hot spot at light valve place;
Described illumination imaging light splitting combined prism, for separating of illumination path and imaging optical path;
Described from axial projection's imaging lens, for the infrared illumination on projection screen is overlapped with the projected picture of visible ray.
In interaction optical system of the present invention, described light valve is digital micro-mirror chip, liquid crystal on silicon chip or display panels.
In interaction optical system of the present invention, described illumination imaging light splitting combined prism is the bonding prism group of small air gap total reflection or polarization splitting prism.
In interaction optical system of the present invention, described three primary light source is respectively ruddiness area source, green glow area source and blue light area source.
In interaction optical system of the present invention, described three primary light source and described infrared light supply are LED light source.
In interaction optical system of the present invention, described plus lens group is comprised of a plurality of lens.
In interaction optical system of the present invention, described fly's-eye lens is array lens.
The present invention also provides a kind of method of work of interaction optical system, and described interaction optical system is above-mentioned interaction optical system, and described method of work comprises:
Every demonstration one frame picture in predetermined period, three primary light source and infrared light supply are opened respectively, and wherein: when three primary light source is opened by scheduled timing, infrared light supply is closed, light valve coordinates and shows visible ray projected picture; When infrared light supply is opened, three primary light source is closed, and light valve coordinates and shows standard-sized sheet picture.
Implement technical scheme of the present invention, there is following beneficial effect: the infrared illuminator of an integrated projecting optical engine light path shared with it in this interaction optical system, realizing infrared illumination region overlaps completely with Projection Display region, can avoid infrared illumination and projected picture Cuo district problem under different projector distances, in lower cost situation, realize the efficient utilization of three primary light source and infrared light supply luminous power simultaneously; And for the application of interaction product, only need to select suitable infrared eye, not need to consider in addition coupling and the adjustment of infrared illuminator.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is that the structural representation in wrong district appears in prior art in non-coaxial infrared illumination situation;
Fig. 2 is the concrete structure schematic diagram of interaction optical system of the present invention;
Fig. 3 is the schematic diagram that in interaction optical system of the present invention, three primary light source and infrared light supply cooperatively interact with light valve respectively.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
In an embodiment of the present invention, an integrated infrared illuminator in this interaction optical system, described infrared illuminator and described interaction optical system share projecting optical engine light path; Realizing infrared illumination region overlaps completely with Projection Display region, can avoid infrared illumination and projected picture Cuo district problem under different projector distances, and the application for interaction product, only suitable infrared eye be need to select, coupling and the adjustment of infrared illuminator do not needed to consider in addition.
As shown in Figure 2, described interaction optical system specifically comprises three primary light source and illumination path thereof; Infrared light supply and illumination path thereof; Light valve; The even light shaping illumination path of compound eye; Illumination imaging light splitting combined prism; Three dichroic coated glass sheets and from axial projection's imaging lens; Wherein, the definition of all parts design parameter is as shown in table 1:
Table 1
The even light shaping illumination path of described compound eye combines formed light path by plus lens group and fly's-eye lens, for the inhomogeneous hot spot of the circle that enters described fly's-eye lens being converted to the rectangular uniform light spots at light valve place; In the present embodiment, described plus lens group is comprised of a plurality of lens.; Described fly's-eye lens is array lens.
Described dichroic coated glass sheet, for three primary colours illumination path and infrared illumination light path is overlapping, is formed on the coaxial evenly rectangular illumination hot spot at light valve place; As shown in Figure 3.Wherein, described light valve is digital micro-mirror chip, liquid crystal on silicon chip or display panels; This interaction optical system can realize the efficient utilization of three primary light source and infrared light supply luminous power in lower cost situation.
Described illumination imaging light splitting combined prism, for separating of illumination path and imaging optical path; In the present embodiment, described illumination imaging light splitting combined prism is the bonding prism group of small air gap total reflection or polarization splitting prism.
Described from axial projection's imaging lens, for the infrared illumination on projection screen is overlapped with the projected picture of visible ray.
Should illustrate to be, described three primary light source is respectively ruddiness area source, green glow area source and blue light area source.Wherein, described three primary light source and described infrared light supply are LED light source.
In an embodiment of the present invention, the method for work of described interaction optical system comprises:
Every demonstration one frame picture in predetermined period, three primary light source and infrared light supply are opened respectively, and wherein: when three primary light source is opened by scheduled timing, infrared light supply is closed, light valve coordinates and shows visible ray projected picture; When infrared light supply is opened, three primary light source is closed, and light valve coordinates and shows that standard-sized sheet picture forms the overlapping covering projected picture of even infrared illumination region.That is to say, can according to application demand very convenient adjust lighting source in the opening time of each frame display frame, realize the optimization configuration as far as possible reduce light source power consumption, as shown in table 2.
Table 2
| Light source | DMD place illumination surplus | Screen geometry efficiency | |
| R | 100％ | 12.313％ | 75.14％ |
| G | 100％ | 11.88％ | 73.236％ |
| B | 100％ | 11.714％ | 74.355％ |
| IR | 100％ | 12.364％ | 79.132％ |
One of ordinary skill in the art will appreciate that all or part of step realizing in the various embodiments described above method is to come the hardware that instruction is relevant to complete by program, corresponding program can be stored in a computer read/write memory medium, described storage medium, as ROM/RAM, disk or CD etc.
Compared to prior art, the infrared illuminator of an integrated projecting optical engine light path shared with it in this interaction optical system, realizing infrared illumination region overlaps completely with Projection Display region, can avoid infrared illumination and projected picture Cuo district problem under different projector distances, in lower cost situation, realize the efficient utilization of three primary light source and infrared light supply luminous power simultaneously; And for the application of interaction product, only need to select suitable infrared eye, not need to consider in addition coupling and the adjustment of infrared illuminator.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in claim scope of the present invention.
Claims (8)
1. an interaction optical system, is characterized in that, an integrated infrared illuminator, and described infrared illuminator and described projection optical system share projecting optical engine light path; Described interaction optical system specifically comprises three primary light source and illumination path thereof; Infrared light supply and illumination path thereof; Light valve; The even light shaping illumination path of compound eye; Illumination imaging light splitting combined prism; Three dichroic coated glass sheets and from axial projection's imaging lens; Wherein:
The even light shaping illumination path of described compound eye combines formed light path by plus lens group and fly's-eye lens, for the inhomogeneous hot spot of the circle that enters described fly's-eye lens being converted to the rectangular uniform light spots at light valve place;
Described dichroic coated glass sheet, for three primary colours illumination path and infrared illumination light path is overlapping, is formed on the coaxial evenly rectangular illumination hot spot at light valve place;
Described illumination imaging light splitting combined prism, for separating of illumination path and imaging optical path;
Described from axial projection's imaging lens, for the infrared illumination on projection screen is overlapped with the projected picture of visible ray.
2. interaction optical system according to claim 1, is characterized in that, described light valve is digital micro-mirror chip, liquid crystal on silicon chip or display panels.
3. interaction optical system according to claim 1, is characterized in that, described illumination imaging light splitting combined prism is the bonding prism group of small air gap total reflection or polarization splitting prism.
4. interaction optical system according to claim 1, is characterized in that, described three primary light source is respectively ruddiness area source, green glow area source and blue light area source.
5. interaction optical system according to claim 1, is characterized in that, described three primary light source and described infrared light supply are LED light source.
6. interaction optical system according to claim 1, is characterized in that, described plus lens group is comprised of a plurality of lens.
7. interaction optical system according to claim 1, is characterized in that, described fly's-eye lens is array lens.
8. a method of work for interaction optical system, is characterized in that, described DLP interaction optical system is the interaction optical system described in above-mentioned 1 to 7 any one, and described method of work comprises:
Every demonstration one frame picture in predetermined period, three primary light source and infrared light supply are opened respectively, and wherein: when three primary light source is opened by scheduled timing, infrared light supply is closed, light valve coordinates and shows visible ray projected picture; When infrared light supply is opened, three primary light source is closed, and light valve coordinates and shows that standard-sized sheet picture forms the overlapping covering projected picture of even infrared illumination region.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410322875.3A CN104062838A (en) | 2014-07-08 | 2014-07-08 | Interactive projection optical system and working method thereof |
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| CN201410322875.3A CN104062838A (en) | 2014-07-08 | 2014-07-08 | Interactive projection optical system and working method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106353957A (en) * | 2016-09-29 | 2017-01-25 | 南京仁光电子科技有限公司 | Laser-projector-based interaction device and method |
| CN106990651A (en) * | 2017-03-30 | 2017-07-28 | 广景视睿科技（深圳）有限公司 | A kind of infrared projection system |
| CN107111217A (en) * | 2014-12-25 | 2017-08-29 | 索尼公司 | Projection display unit |
| CN107577108A (en) * | 2016-07-04 | 2018-01-12 | 深圳市光峰光电技术有限公司 | A kind of display system and method |
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| CN102207661A (en) * | 2010-03-29 | 2011-10-05 | 影来腾贸易(上海)有限公司 | Projection type light-uniforming system for touch screen |
| CN102385230A (en) * | 2010-08-30 | 2012-03-21 | 台达电子工业股份有限公司 | Light source system and projection device including light source system |
| CN103024324A (en) * | 2012-12-10 | 2013-04-03 | Tcl通力电子（惠州）有限公司 | Short-focus projection system |
| CN203012334U (en) * | 2012-12-26 | 2013-06-19 | 神画科技（深圳）有限公司 | Projection system with infrared light source |
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| CN102207661A (en) * | 2010-03-29 | 2011-10-05 | 影来腾贸易(上海)有限公司 | Projection type light-uniforming system for touch screen |
| CN201749281U (en) * | 2010-06-02 | 2011-02-16 | 广景科技有限公司 | Portable interactive projection device |
| CN102385230A (en) * | 2010-08-30 | 2012-03-21 | 台达电子工业股份有限公司 | Light source system and projection device including light source system |
| CN103024324A (en) * | 2012-12-10 | 2013-04-03 | Tcl通力电子（惠州）有限公司 | Short-focus projection system |
| CN203012334U (en) * | 2012-12-26 | 2013-06-19 | 神画科技（深圳）有限公司 | Projection system with infrared light source |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107111217A (en) * | 2014-12-25 | 2017-08-29 | 索尼公司 | Projection display unit |
| CN107111217B (en) * | 2014-12-25 | 2020-10-27 | 索尼公司 | Projection display unit |
| CN107577108A (en) * | 2016-07-04 | 2018-01-12 | 深圳市光峰光电技术有限公司 | A kind of display system and method |
| CN107577108B (en) * | 2016-07-04 | 2019-09-20 | 深圳光峰科技股份有限公司 | A kind of display system and method |
| CN106353957A (en) * | 2016-09-29 | 2017-01-25 | 南京仁光电子科技有限公司 | Laser-projector-based interaction device and method |
| CN106990651A (en) * | 2017-03-30 | 2017-07-28 | 广景视睿科技（深圳）有限公司 | A kind of infrared projection system |
| WO2018176613A1 (en) * | 2017-03-30 | 2018-10-04 | 广景视睿科技（深圳）有限公司 | Infrared projection system |
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