CN100529838C - 3-colored light straight hexagonal prism color-combination prism - Google Patents
3-colored light straight hexagonal prism color-combination prism Download PDFInfo
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- CN100529838C CN100529838C CNB2006101187519A CN200610118751A CN100529838C CN 100529838 C CN100529838 C CN 100529838C CN B2006101187519 A CNB2006101187519 A CN B2006101187519A CN 200610118751 A CN200610118751 A CN 200610118751A CN 100529838 C CN100529838 C CN 100529838C
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Abstract
A three-color right six-prism color-combination prism belongs to the photoelectric illumination and display technical field, and is a right prism shape prism which is formed by gluing a first glass prism, a second glass prism, a third glass prism and a fourth glass prism and has the bottom surface as a regular hexagon. A second light filtering film is positioned between the first glass prism, the second glass prism and the third glass prism, the fourth glass prism; a first light filtering film is positioned between the first glass prism, the fourth glass prism and the second glass prism, the third glass prism; the first light filtering film and the second light filtering film intersect with an included angle of 60 degrees; the intersection line of the first light filtering film and the second light filtering film coincides with a central axis of the color-combination prism; the incident plane of three-color incident light and the exit plane of color combining light are respectively a first incident plane, a second incident plane, a third incident plane and an exit plane. The present invention has the advantages that the light filtering films has little manufacture difficulty and large in relative pore diameter to which the light filtering films can be applied, etc, and is especially suitable to be used as three-color light combining illumination in the display systems such as LCD, DLP and LCOS.
Description
Technical field
The present invention relates to a kind of 3-colored light straight hexagonal prism color-combination prism, definitely say, relate to a kind of usefulness straight six prismatic color-combination prisms three coloured light are closed the device of look, belong to photoelectric lighting and technique for displaying field.
Background technology
Existing three coloured light X type colour-mixing combined prisms (X combined prism), the X combined prism of a square bodily form of employing, there is the filter coating of two quadratures the centre.See Fig. 1.Now closing look with red, green, blue three coloured light, to become white light be that example illustrates it.Filter coating f1 reflect blue sees through red, green glow; Filter coating f2 reflect red sees through blue, green glow.Hot, green, blue three color light is injected the X combined prism from the plane of incidence separately respectively, just closes look through the transmission of filter coating f1 and f2 with reflection and becomes the white light outgoing.In the X of background technology combined prism, red, green, blue three coloured light all are each the self-corresponding filter coatings of incident angle difference directive with 45 °, and big like this incident angle is brought very big difficulty to the making of filter coating, and the applicable relative aperture of filter coating is less.In addition, the X combined prism is formed by four right-angle prism gummeds, and manufacture craft is strict, the cost height.
Summary of the invention
The objective of the invention is to propose a kind of 3-colored light straight hexagonal prism color-combination prism.This combined prism has the manufacture difficulty of filter coating little, the advantage that the applicable relative aperture of filter coating is bigger.In addition, this combined prism is formed by four identical in twos prism gummeds, and manufacture craft requires relatively low, is convenient to make low cost of manufacture.
Now sketch for achieving the above object the technical solution adopted in the present invention in conjunction with the accompanying drawings.
3-colored light straight hexagonal prism color-combination prism is with first prism 11, second prism 12, the bottom surface that prism 13 and the 4th prism 14 gummeds form is orthohexagonal right prism prism, second filter coating 16 is positioned at first prism 11, second prism 12 and the prism 13, between the 4th prism 14, first filter coating 15 is positioned at first prism 11, the 4th prism 14 and second prism 12, between the prism 13, first filter coating 15 and second filter coating 16 are that 60 ° mode intersects with angle, first filter coating 15 overlaps with the central shaft of described color-combination prism with the intersection of second filter coating 16, three planes of incidence and an exit facet that closes coloured light of three coloured light are respectively the first coloured light plane of incidence 123,133, the second coloured light plane of incidence, 113, the three coloured light planes of incidence 135,143 and close coloured light exit facet 134.Three coloured light are injected described color-combination prism from the first coloured light plane of incidence 123,133, the second coloured light plane of incidence 113 and the 3rd coloured light plane of incidence 135,143 respectively in the mode that is 120 ° of angles between any two, after described color-combination prism closes look, close coloured light from exit facet 134 outgoing.
Now be described with reference to the accompanying drawings technical scheme of the present invention.
A kind of 3-colored light straight hexagonal prism color-combination prism, it is characterized in that, contain first prism 11, second prism 12, prism 13, the 4th prism 14, first filter coating 15 and second filter coating 16, see through first, second coloured light, first prism 11 and prism 13 are that five base angles are respectively 90 °, 120 °, 120 °, 90 °, 120 ° straight pentagonal prism, second prism 12 and the 4th prism 14 are that four base angles are respectively 60 °, 90 °, 120 °, 90 ° straight quadrangular, the height of described four prisms equates, first filter coating, 15 reflections, first coloured light, see through second, the 3rd coloured light, second filter coating, 16 reflections the 3rd coloured light, see through first, second coloured light, described color-combination prism is by first prism 11, second prism 12, the bottom surface that prism 13 and the 4th prism 14 gummeds form is a regular hexagon, base and apothem are respectively positive six prisms of a and d, wherein
First inclined-plane 111 and the 3rd inclined-plane 131 glue together with second inclined-plane 121 and the 4th inclined-plane 141 respectively, first filter coating 15 is arranged on both cemented surfaces, the 5th inclined-plane 112 and the 6th inclined-plane 132 glue together with the 7th inclined-plane 142 and the 8th inclined-plane 122 respectively, second filter coating 16 is arranged on both cemented surfaces, angle between described two filter coatings is 60 °, the intersection of described two filter coatings and the central axes of described color-combination prism, the plane of incidence of three three coloured light is respectively the first coloured light plane of incidence 123,133, the second coloured light plane of incidence 113 and the 3rd coloured light plane of incidence 135,143, the first coloured light plane of incidence 123, the 133rd, second prism 12 glued together and two planes that the bottom surface is combined into of prism 13, the second coloured light plane of incidence 113 is exactly the bottom surface of first prism 11, the 3rd coloured light plane of incidence 135, the 143rd, two planes that the bottom surface is combined into of prism 13 glued together and the 4th prism 14, first filter coating 15 and vertical respectively the 3rd coloured light plane of incidence 143 of dividing equally of second filter coating 16,135 and the first coloured light plane of incidence 123,133, closing coloured light exit facet 134 is exactly the bottom surface of prism 13, the workplace of described four prisms: the plane of incidence of three three coloured light, the face of two filter coatings and an exit facet that closes coloured light all are polished surfaces.See Fig. 2,3 and 7.
Technical scheme of the present invention is further characterized in that first filter coating 15 and second filter coating 16 are depolarization filter coatings.
Technical scheme of the present invention is further characterized in that the apothem that closes the base on the coloured light exit facet 134 reduces, and its length is expressed as with inequality:
Wherein, a is the length of side of former regular hexagon bottom surface, and d ' is for closing the apothem on the base on the coloured light exit facet 134.In other words, place, the bottom surface of prism 13 can clip one flat plate, clips dull and stereotyped maximum ga(u)ge and is
See Fig. 6.
Compare with background technology, the present invention has following advantage:
1, the utilization ratio of optical energy height of three coloured light
Red, green, blue three coloured light all are with 45 ° of incident angle directives filter coating separately in the existing X-prism color device, make the difficulty height of such filter coating, have limited the numerical value of F number, have limited the utilization ratio of optical energy of three coloured light.Red, green, blue three coloured light all are with 30 ° of incident angle directives filter coating separately among the present invention, have reduced the difficulty of making filter coating, have reduced the numerical value of F number, have improved the utilization ratio of optical energy of three coloured light.
2, first filter coating 15 and second filter coating 16 are easy to make the depolarization filter coating than background technology.
3, the low cost of manufacture of first filter coating 15 and second filter coating 16.
Description of drawings
Fig. 1 is the structural representation of red, green, blue three coloured light X-prism color devices.
Fig. 2 is the structural representation of the bottom surface of 3-colored light straight hexagonal prism color-combination prism.
Fig. 3 is the decomposition texture synoptic diagram of the bottom surface of 3-colored light straight hexagonal prism color-combination prism.
Fig. 4 is the spectral transmittance curve map of first filter coating 15 in the 3-colored light straight hexagonal prism color-combination prism, and wherein, first filter coating 15 is depolarization filter coatings.
The spectral transmittance curve map of second filter coating 16 in Fig. 5 3-colored light straight hexagonal prism color-combination prism, wherein, second filter coating 16 is depolarization filter coatings.
Fig. 6 is the structural representation of bottom surface of a kind of modification of 3-colored light straight hexagonal prism color-combination prism.
Fig. 7 is the light path synoptic diagram of 3-colored light straight hexagonal prism color-combination prism.
Embodiment
Now describe technical scheme of the present invention and principle of work in conjunction with the accompanying drawings and embodiments in detail.
One of embodiment 1 straight six prismatic color-combination prisms.
Present embodiment has and the described identical in structure structure of above-mentioned technical scheme, it is characterized in that the key technical indexes is enumerated as follows:
The height and the orthohexagonal length of side in bottom surface are respectively 22mm and 12.7mm;
The centre wavelength of 50% transmitance correspondence of first filter coating 15 is that the centre wavelength of 50% transmitance correspondence of the 585nm ± 3nm and second filter coating 16 is 500nm ± 3nm.
The spectral transmittance characteristic of first filter coating 15 and second filter coating 16 as shown in Figure 4 and Figure 5.
Principle of work.Suppose that in the present embodiment first coloured light, second coloured light and the 3rd coloured light are respectively blue light, green glow and ruddiness, three coloured light incide each self-corresponding filter coating with 30 ° incident angle respectively.Referring to Fig. 7.Blue light is from 123,133 incidents of the first coloured light plane of incidence, according to its label by the first coloured light plane of incidence 123,133 be 123 part and label be that 133 part is divided into BP1 and BP2 two parts respectively.The BP1 part incides on first filter coating 15 with 30 ° of incident angles earlier, and first filter coating 15 reflects it on second filter coating 16, sees through second filter coating 16, from closing 134 outgoing of coloured light exit facet; The BP2 part incides on first filter coating 15 with 30 ° of incident angles, and first filter coating 15 reflects it to and closes coloured light exit facet 134, and from this face outgoing.Green glow is from 113 incidents of the second coloured light plane of incidence, according to the position of incident beam with respect to the 11 vertical bisector plane distributions of the second coloured light plane of incidence, be divided into GP1 and GP2 two parts, the GP1 part sees through first filter coating 15 and second filter coating 16 successively, from closing 134 outgoing of coloured light exit facet; The GP2 part sees through second filter coating 16 and first filter coating 15 successively, from closing 134 outgoing of coloured light exit facet.Ruddiness is from 135,143 incidents of the 3rd coloured light plane of incidence, is that 135 part and label are that 143 part is divided into RP1 and RP2 two parts respectively according to its label by the 3rd coloured light plane of incidence 135,143.
The RP1 part incides on second filter coating 16 with 30 ° of incident angles earlier, after 16 reflections of second filter coating, incides on first filter coating 15, sees through first filter coating 15, from closing 134 outgoing of coloured light exit facet; The RP2 part incides on second filter coating 16 with 30 ° of incident angles, and second filter coating 16 reflects it to and closes coloured light exit facet 134, and from this face outgoing.Therefore, from red, green, blue three coloured light of three plane of incidence incidents,, under the effect of first filter coating 15 and second filter coating 16, all close 134 outgoing of coloured light exit facet from the straight six prismatic color-combination prisms of present embodiment through the optical path of equal in length.Mix from red, green, blue three coloured light that close 134 outgoing of coloured light exit facet, close look and become to close coloured light, i.e. white light.
Two of embodiment 2 straight six prismatic color-combination prisms.
Present embodiment is except having following structure, and remaining structure and embodiment's 1 is identical: first filter coating 15 and second filter coating 16 are depolarization filter coatings.
Because three coloured light incide each self-corresponding filter coating with 30 ° incident angle respectively, incident angle is less, so be used for the filter coating of embodiment 1 and the depolarization filter coating of embodiment 2, not only the difficulty of Zhi Zuoing is less, and can also reduce the maximum applicable F number of described filter coating and depolarization filter coating.
One of modification of the color-combination prism of embodiment 3 embodiment 1.
Present embodiment is except having following structure, and remaining structure and embodiment's 1 is identical: the length of side a=12.7mm of former regular hexagon bottom surface, close apothem the d '=9mm on the base on the coloured light exit facet 134.
3-colored light straight hexagonal prism color-combination prism of the present invention is particularly suitable for making the light-combining prism of three coloured light in the display system such as LCD, DLP and LCOS, and the illumination white light of homogeneous and bright is provided for system.
Claims (16)
1, a kind of 3-colored light straight hexagonal prism color-combination prism, it is characterized in that, contain first prism (11), second prism (12), prism (13), the 4th prism (14), first filter coating (15) and second filter coating (16), first prism (11) and prism (13) are that five base angles are respectively 90 °, 120 °, 120 °, 90 °, 120 ° straight pentagonal prism, second prism (12) and the 4th prism (14) are that four base angles are respectively 60 °, 90 °, 120 °, 90 ° straight quadrangular, the height of described four prisms equates, first filter coating (15) reflection, first coloured light, see through second, the 3rd coloured light, second filter coating (16) reflection the 3rd coloured light, see through first, second coloured light, described color-combination prism is by first prism (11), second prism (12), the bottom surface that prism (13) and the 4th prism (14) gummed form is a regular hexagon, base and apothem are respectively positive six prisms of a and d, wherein
Glue together with second inclined-plane (121) and the 4th inclined-plane (141) respectively first inclined-plane (111) and the 3rd inclined-plane (131), first filter coating (15) is arranged on both cemented surfaces, glue together with the 7th inclined-plane (142) and the 8th inclined-plane (122) respectively the 5th inclined-plane (112) and the 6th inclined-plane (132), second filter coating (16) is arranged on both cemented surfaces, angle between described two filter coatings is 60 °, the intersection of described two filter coatings and the central axes of described color-combination prism, the plane of incidence of three three coloured light is respectively the first coloured light plane of incidence (123,133), the second coloured light plane of incidence (113) and the 3rd coloured light plane of incidence (135,143), the first coloured light plane of incidence (123,133) be second prism (12) glued together and two planes that the bottom surface is combined into of prism (13), the second coloured light plane of incidence (113) is exactly the bottom surface of first prism (11), the 3rd coloured light plane of incidence (135,143) be two planes that the bottom surface is combined into of prism (13) and the 4th prism (14) glued together, first filter coating (15) and vertical respectively the 3rd coloured light plane of incidence (143 of dividing equally of second filter coating (16), 135) and the first coloured light plane of incidence (123,133), closing coloured light exit facet (134) is exactly the bottom surface of prism (13), the workplace of described four prisms: the plane of incidence of three three coloured light, the face of two filter coatings and an exit facet that closes coloured light all are polished surfaces.
2,3-colored light straight hexagonal prism color-combination prism according to claim 1 is characterized in that, first filter coating (15) and second filter coating (16) are the depolarization filter coatings.
3,3-colored light straight hexagonal prism color-combination prism according to claim 1, it is characterized in that, the centre wavelength of 50% transmitance correspondence of first filter coating (15) is 585nm ± 3nm, and the centre wavelength of 50% transmitance correspondence of second filter coating (16) is 500nm ± 3nm.
4,3-colored light straight hexagonal prism color-combination prism according to claim 1 is characterized in that, the apothem that closes the base on the coloured light exit facet (134) reduces, and its length is expressed as with inequality:
Wherein, a is the length of side of former regular hexagon bottom surface, and d ' is for closing the apothem on the base on the coloured light exit facet (134).
5,3-colored light straight hexagonal prism color-combination prism according to claim 4 is characterized in that, the length of side a=12.7mm of former regular hexagon bottom surface closes apothem the d '=9mm on the base on the coloured light exit facet (134).
6,3-colored light straight hexagonal prism color-combination prism according to claim 1 is characterized in that, the orthohexagonal length of side in the height of described color-combination prism and bottom surface is respectively 22mm and 12.7mm.
7,3-colored light straight hexagonal prism color-combination prism according to claim 1, it is characterized in that, first filter coating (15) and second filter coating (16) are the depolarization filter coatings, the centre wavelength of 50% transmitance correspondence of first filter coating (15) is 585nm ± 3nm, and the centre wavelength of 50% transmitance correspondence of second filter coating (16) is 500nm ± 3nm.
8,3-colored light straight hexagonal prism color-combination prism according to claim 1, it is characterized in that, first filter coating (15) and second filter coating (16) are the depolarization filter coatings, and the apothem that closes the base on the coloured light exit facet (134) reduces, and its length is expressed as with inequality:
Wherein, a is the length of side of former regular hexagon bottom surface, and d ' is for closing the apothem on the base on the coloured light exit facet (134).
9,3-colored light straight hexagonal prism color-combination prism according to claim 8 is characterized in that, the length of side a=12.7mm of former regular hexagon bottom surface closes apothem the d '=9mm on the base on the coloured light exit facet (134).
10,3-colored light straight hexagonal prism color-combination prism according to claim 1, it is characterized in that, first filter coating (15) and second filter coating (16) are the depolarization filter coatings, and the orthohexagonal length of side in the height of described color-combination prism and bottom surface is respectively 22mm and 12.7mm.
11,3-colored light straight hexagonal prism color-combination prism according to claim 1, it is characterized in that, the centre wavelength of 50% transmitance correspondence of first filter coating (15) is 585nm ± 3nm, the centre wavelength of 50% transmitance correspondence of second filter coating (16) is 500nm ± 3nm, the apothem that closes the base on the coloured light exit facet (134) reduces, and its length is expressed as with inequality:
Wherein, a is the length of side of former regular hexagon bottom surface, and d ' is for closing the apothem on the base on the coloured light exit facet (134).
12,3-colored light straight hexagonal prism color-combination prism according to claim 11 is characterized in that, the length of side a=12.7mm of former regular hexagon bottom surface closes apothem the d '=9mm on the base on the coloured light exit facet (134).
13,3-colored light straight hexagonal prism color-combination prism according to claim 1, it is characterized in that, the centre wavelength of 50% transmitance correspondence of first filter coating (15) is 585nm ± 3nm, the centre wavelength of 50% transmitance correspondence of second filter coating (16) is 500nm ± 3nm, and the orthohexagonal length of side in the height of described color-combination prism and bottom surface is respectively 22mm and 12.7mm.
14,3-colored light straight hexagonal prism color-combination prism according to claim 1, it is characterized in that, first filter coating (15) and second filter coating (16) are the depolarization filter coatings, the centre wavelength of 50% transmitance correspondence of first filter coating (15) is 585nm ± 3nm, the centre wavelength of 50% transmitance correspondence of second filter coating (16) is 500nm ± 3nm, the apothem that closes the base on the coloured light exit facet (134) reduces, and its length is expressed as with inequality:
Wherein, a is the length of side of former regular hexagon bottom surface, and d ' is for closing the apothem on the base on the coloured light exit facet (134).
15,3-colored light straight hexagonal prism color-combination prism according to claim 14 is characterized in that, the length of side a=12.7mm of former regular hexagon bottom surface closes apothem the d '=9mm on the base on the coloured light exit facet (134).
16,3-colored light straight hexagonal prism color-combination prism according to claim 1, it is characterized in that, first filter coating (15) and second filter coating (16) are the depolarization filter coatings, the centre wavelength of 50% transmitance correspondence of first filter coating (15) is 585nm ± 3nm, the centre wavelength of 50% transmitance correspondence of second filter coating (16) is 500nm ± 3nm, and the orthohexagonal length of side in the height of described color-combination prism and bottom surface is respectively 22mm and 12.7mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101187519A CN100529838C (en) | 2006-11-24 | 2006-11-24 | 3-colored light straight hexagonal prism color-combination prism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101187519A CN100529838C (en) | 2006-11-24 | 2006-11-24 | 3-colored light straight hexagonal prism color-combination prism |
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| CN101191902A CN101191902A (en) | 2008-06-04 |
| CN100529838C true CN100529838C (en) | 2009-08-19 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101672938B (en) * | 2009-09-30 | 2011-04-13 | 嘉兴蓝特光学有限公司 | Molding processing method of roof prism |
| CN103257450B (en) * | 2012-02-17 | 2015-03-25 | 台达电子工业股份有限公司 | Light distributing structure and optical-mechanical system including same |
| DE102015101847B4 (en) * | 2015-02-10 | 2017-11-02 | Eyesense Gmbh | Beam splitter and arrangement for the examination of a stimulable by electromagnetic radiation sample |
| CN109270775A (en) * | 2018-11-23 | 2019-01-25 | 歌尔股份有限公司 | Optical system and its projection arrangement applied to projection arrangement |
| CN110031978A (en) * | 2019-05-28 | 2019-07-19 | 深圳市思坦科技有限公司 | A kind of nearly eye display device |
| CN111880319A (en) * | 2020-08-18 | 2020-11-03 | 董述萍 | Thomson scattering diagnostic system with atomic notch filter |
| CN114596793A (en) * | 2022-02-24 | 2022-06-07 | 武汉精立电子技术有限公司 | High-precision laminating alignment method and equipment for cubic three-color light-combining prism |
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