CN100449334C - Tricolor light isosceles trapezoid color-recombination combined prism - Google Patents
Tricolor light isosceles trapezoid color-recombination combined prism Download PDFInfo
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Abstract
The utility model relates to a three-color light isosceles-trapezoid color-combination prism, belonging to a technical field of photoelectric illumination and display. The combined prism is a straight prismatic prism with isosceles-trapezoid at the bottom and is composed of a first prism (11), a second prism (12), a third prism (13), a first filtering film (14) and a second filtering film (15), wherein the first inclined side (132) of the third prism (13) is glued with the third isosceles side (120) of the second prism (12), the first bottom side (112) of the first prism (11) is glued with the second right-angle side (131) of the third prism (13) and the fourth isosceles side (121) of the second prism (12), a first filtering film (14) and a second filtering film (15) are respectively arranged on the glued surface, the three-color light incident sides are respectively a first right-angle side (130), a first isosceles side (110) and a second bottom side (122), the color-combination light emergent side is a second isosceles side (111). The utility model has the advantages of improving F value of the filtering film of the color-combination prism, simple structure, easy manufacturing and low cost.
Description
Technical field
The present invention relates to a kind of tricolor light isosceles trapezoid color-recombination combined prism, definitely say, relate to and a kind ofly three coloured light are closed the device of look, belong to photoelectric lighting and technique for displaying field with the isosceles trapezoid combined prism.
Background technology
Existing three coloured light X type colour-mixing combined prisms (X combined prism) adopt a foursquare X combined prism, and there is the filter coating of two quadratures the centre, and two filter coatings are the depolarization filter coating.See Fig. 1.Be that example illustrates it now with red, green, blue three coloured light synthesize white lights.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 with each self-corresponding filter coating of 45 difference incident, and two filter coatings are not subjected to the influence of light polarization state, the making that big like this incident angle offsets the polarizing filter film brings very big difficulty, and it is less that filter coating can be used relative aperture (F number).In addition, the X combined prism is glued together by four right-angle prisms, and manufacture craft requires high, the cost height.
Summary of the invention
The objective of the invention is to propose a kind of tricolor light isosceles trapezoid color-recombination combined prism.This combined prism has simple in structure, is convenient to make, and low cost of manufacture, filter coating can be used the bigger advantage of relative aperture (F number).
For achieving the above object, the present invention adopts following technical scheme.This combined prism is by first prism 11, second prism 12, prism 13, first filter coating 14 and second filter coating 15 are formed, the bottom surface is an isosceles trapezoid, the prism of straightedge column, first inclined-plane 132 of prism 13 and the C grade central plane of second prism 12 120 gummeds, fourth class central plane 121 gummeds of first bottom surface 112 of first prism 11 and the second right angle face 131 of prism 13 and second prism 12, first filter coating 14 and second filter coating 15 are arranged respectively on the described cemented surface, the three coloured light planes of incidence are respectively the first right angle face 130, first central plane such as grade 10 and second bottom surface 122, closing the coloured light exit facet is second central plane such as grade 111.The bottom surface of combined prism of the present invention as shown in Figure 2, the schematic perspective view of combined prism of the present invention and decomposing schematic representation are as shown in Figure 3.Three coloured light are respectively with each self-corresponding filter coating of incident angle incident of 30 °, and low-angle incident helps to reduce depolarization filter coating difficulty of making and the maximum that improves filter coating can use the F number.
Combined prism of the present invention can be with the photosynthetic look of any three kinds of colors; Otherwise, the coloured light color separation of closing that comprises two or more colors can be become three coloured light.For simplifying narration, the existing look that closes with red, green, blue three coloured light is an example, is described with reference to the accompanying drawings technical scheme of the present invention.
Scheme 1:(sees accompanying drawing 4) a kind of tricolor light isosceles trapezoid color-recombination combined prism, it is characterized in that: this combined prism is by first prism 11, second prism 12, prism 13, first filter coating 14 and second filter coating 15 are formed, the bottom surface is an isosceles trapezoid, the prism of straightedge column, first prism 11 is that the bottom surface is the straightedge mirror of isosceles triangle, the base angle of described isosceles triangle is 30 °, first prism 11 contains first central plane such as grade 110, second central plane such as grade 111 and first bottom surface 112, second prism 12 is that the bottom surface is the straightedge mirror of isosceles triangle, the base angle of described isosceles triangle is 30 °, second prism 12 contains C grade central plane 120, the fourth class central plane 121 and second bottom surface 122, prism 13 is that the bottom surface is the straightedge mirror of right-angle triangle, the individual base angle of described right-angle triangle is 30 °, prism 13 contains the first right angle face 130, the second right angle face 131 and first inclined-plane 132, first prism 11, the incline of second prism 12 and prism 13 equates, the length on the base of second bottom surface 122 is 2 times of length on the base of central planes 111 such as first central plane such as grade 110 and second, the equal in length on the base on the length on the base of C grade central plane 120 and first inclined-plane 132, the length on the base of first bottom surface 112 equates with the length sum on the base of the fourth class central plane 121 and the second right angle face 131, first prism 11, second prism 12 and prism 13 are made by optical material, each workplace of described prism all is a polished surface, first inclined-plane 132 and C grade central plane 120 gummeds, first bottom surface 112 and the second right angle face 131 and fourth class central plane 121 gummeds, on the cemented surface of first inclined-plane 132 and C grade central plane 120, reflect blue and green glow are arranged, see through first filter coating 14 of ruddiness, containing at the glue of first bottom surface 112 and the second right angle face 131 and fourth class central plane 121 has reflect blue on the face, see through second filter coating 15 of green glow and ruddiness, first filter coating 14 and second filter coating 15 are the depolarization filter coating, two base angles of the bottom surface of described combined prism all are 60 °, two waists equate with upper base, going to the bottom is 2 times of upper base, the blue light plane of incidence is first central plane such as grade 110, the green glow plane of incidence is second bottom surface 122, the ruddiness plane of incidence is the first right angle face 130, and exit facet is second central plane such as grade 111.The spectral transmittance characteristic of first filter coating 14 and second filter coating 15 is similar to Fig. 5 and spectral transmittance characteristic shown in Figure 6 respectively.
Scheme 2:(sees accompanying drawing 7) a kind of tricolor light isosceles trapezoid color-recombination combined prism, it is characterized in that: this combined prism is by first prism 11, second prism 12, prism 13, first filter coating 14 and second filter coating 15 are formed, the bottom surface is an isosceles trapezoid, the prism of straightedge column, first prism 11 is that the bottom surface is the straightedge mirror of isosceles triangle, the base angle of described isosceles triangle is 30 °, first prism 11 contains first central plane such as grade 110, second central plane such as grade 111 and first bottom surface 112, second prism 12 is that the bottom surface is the straightedge mirror of isosceles triangle, the base angle of described isosceles triangle is 30 °, second prism 12 contains C grade central plane 120, the fourth class central plane 121 and second bottom surface 122, prism 13 is that the bottom surface is the straightedge mirror of right-angle triangle, a base angle of described right-angle triangle is 30 °, prism 13 contains the first right angle face 130, the second right angle face 131 and first inclined-plane 132, first prism 11, the incline of second prism 12 and prism 13 equates, the length on the base of second bottom surface 122 is 2 times of length on the base of central planes 111 such as first central plane such as grade 110 and second, the equal in length on the base on the length on the base of C grade central plane 120 and first inclined-plane 132, the length on the base of first bottom surface 112 equates with the length sum on the base of the fourth class central plane 121 and the second right angle face 131, first prism 11, second prism 12 and prism 13 are made by optical material, each workplace of described prism all is a polished surface, first inclined-plane 132 and C grade central plane 120 gummeds, first bottom surface 112 and the second right angle face 131 and fourth class central plane 121 gummeds, on the cemented surface of first inclined-plane 132 and C grade central plane 120, reflect red and green glow are arranged, see through first filter coating 14 of blue light, on the cemented surface of first bottom surface 112 and the second right angle face 131 and fourth class central plane 121, reflect red is arranged, see through second filter coating 15 of green glow and blue light, first filter coating 14 and second filter coating 15 are the depolarization filter coating, two base angles of the bottom surface of described combined prism all are 60 °, two waists equate with upper base, going to the bottom is 2 times of upper base, the ruddiness plane of incidence is first central plane such as grade 110, the green glow plane of incidence is second bottom surface 122, the blue light plane of incidence is the first right angle face 130, and exit facet is second central plane such as grade 111.The spectral transmittance characteristic of first filter coating 14 and second filter coating 15 is similar subgraph 8 and spectral transmittance characteristic shown in Figure 9 respectively.
Scheme 3:(sees accompanying drawing 10) a kind of tricolor light isosceles trapezoid color-recombination combined prism, it is characterized in that: this combined prism is by first prism 11, second prism 12, prism 13, first filter coating 14 and second filter coating 15 are formed, the bottom surface is an isosceles trapezoid, the prism of straightedge column, first prism 11 is that the bottom surface is the straightedge mirror of isosceles triangle, the base angle of described isosceles triangle is 30 °, first prism 11 contains first central plane such as grade 110, second central plane such as grade 111 and first bottom surface 112, second prism 12 is that the bottom surface is the straightedge mirror of isosceles triangle, the base angle of described isosceles triangle is 30 °, second prism 12 contains C grade central plane 120, the fourth class central plane 121 and second bottom surface 122, prism 13 is that the bottom surface is the straightedge mirror of right-angle triangle, a base angle of described right-angle triangle is 30 °, prism 13 contains the first right angle face 130, the second right angle face 131 and first inclined-plane 132, first prism 11, the incline of second prism 12 and prism 13 equates, the length on the base of second bottom surface 122 is 2 times of length on the base of central planes 111 such as first central plane such as grade 110 and second, the equal in length on the base on the length on the base of C grade central plane 120 and first inclined-plane 132, the length on the base of first bottom surface 112 equates with the length sum on the base of the fourth class central plane 121 and the second right angle face 131, first prism 11, second prism 12 and prism 13 are made by optical material, each workplace of described prism all is a polished surface, first inclined-plane 132 and C grade central plane 120 gummeds, first bottom surface 112 and the second right angle face 131 and fourth class central plane 121 gummeds, on the cemented surface of first inclined-plane 132 and C grade central plane 120, reflect red is arranged, see through first filter coating 14 of green glow and blue light, on the cemented surface of first bottom surface 112 and the second right angle face 131 and fourth class central plane 121, reflect blue is arranged, see through second filter coating 15 of green glow and ruddiness, first filter coating 14 and second filter coating 15 are the depolarization filter coating, two base angles of the bottom surface of described combined prism all are 60 °, two waists equate with upper base, going to the bottom is 2 times of upper base, the blue light plane of incidence is first central plane such as grade 110, the ruddiness plane of incidence is second bottom surface 122, the green glow plane of incidence is the first right angle face 130, and exit facet is second central plane such as grade 111.The spectral transmittance characteristic of first filter coating 14 and second filter coating 15 is similar to Figure 11 and spectral transmittance characteristic shown in Figure 12 respectively.
Compare with background technology, the present invention has following advantage:
1, improves the F number of the filter coating of colour-mixing combined prism
In the existing X color-combination prism, red, green, blue three coloured light all are to incide separately filter coating with 45 ° of incident angles, and incident angle is big, makes the difficulty height of such filter coating, the applicable relative aperture of X color-combination prism, and promptly the F number is less.Three coloured light of the present invention all are to incide separately filter coating with 30 ° of incident angles, and incident angle is little, have reduced the difficulty of making filter coating, the applicable relative aperture of combined prism of the present invention, and promptly the F number is bigger.
2, simple in structure, be easy to make, cost is low
Existing X color-combination prism is combined by four high precision right-angle prisms, complex structure, and technology is numerous and diverse, the cost of manufacture height.Combined prism of the present invention is combined by three high-precision prisms, and than the few high precision prism of background technology, simple in structure, technology is more succinct, and cost of manufacture is low.
Description of drawings
The synoptic diagram of Fig. 1 three coloured light X type colour-mixing combined prisms.
The structural representation of Fig. 2 tricolor light isosceles trapezoid color-recombination combined prism bottom surface.Isosceles trapezoid is ABCD, and AB is a upper base, and CD goes to the bottom, and AD and 1BC are two waists.
The schematic perspective view of Fig. 3 tricolor light isosceles trapezoid color-recombination combined prism and decomposing schematic representation.
The structural representation of one of Fig. 4 tricolor light isosceles trapezoid color-recombination combined prism.
The spectrum transmitting rate curve of first filter coating 14 of the combined prism that Fig. 5 is shown in Figure 4.
The spectrum transmitting rate curve of second filter coating 15 of the combined prism that Fig. 6 is shown in Figure 4.
Two structural representation of Fig. 7 tricolor light isosceles trapezoid color-recombination combined prism.
The spectrum transmitting rate curve of first filter coating 14 of the combined prism that Fig. 8 is shown in Figure 7.
The spectrum transmitting rate curve of second filter coating 15 of the combined prism that Fig. 9 is shown in Figure 7.
Three structural representation of Figure 10 tricolor light isosceles trapezoid color-recombination combined prism.
The spectrum transmitting rate curve of first filter coating 14 of the combined prism that Figure 11 is shown in Figure 10.
The spectrum transmitting rate curve of second filter coating 15 of the combined prism that Figure 12 is shown in Figure 10.
Embodiment
Now describe technical scheme of the present invention in conjunction with the accompanying drawings and embodiments in detail.
One of embodiment 1 tricolor light isosceles trapezoid color-recombination combined prism, this combined prism are implemented according to above-mentioned scheme 1 fully:
The key technical indexes of the described combined prism of present embodiment: the bottom surface waist is long to be that 10mm bottom surface upper base is 10mm; Go to the bottom and be 20mm in the bottom surface; The prism incline is 17.8mm; The centre wavelength of 50% transmitance correspondence of first filter coating 14 is 585nm ± 3nm; The centre wavelength of 50% transmitance correspondence of second filter coating 15 is 500nm ± 3nm.
Two of embodiment 2 tricolor light isosceles trapezoid color-recombination combined prisms, this combined prism are implemented according to above-mentioned scheme 2 fully:
The key technical indexes of the described combined prism of present embodiment: the bottom surface waist is long to be 10mm; The bottom surface upper base is 10mm; Go to the bottom and be 20mm in the bottom surface; The prism incline is 17.8mm; The centre wavelength of 50% transmitance correspondence of filter coating 14 is 500nm ± 3nm; The centre wavelength of 50% transmitance correspondence of second filter coating 15 is 585nm ± 3nm.
Three of embodiment 3 tricolor light isosceles trapezoid color-recombination combined prisms, this combined prism are implemented according to above-mentioned scheme 3 fully:
The key technical indexes of the described combined prism of present embodiment: the bottom surface waist is long to be 10mm; The bottom surface upper base is 10mm; Go to the bottom and be 20mm in the bottom surface; The prism incline is 17.8mm; The centre wavelength of 50% transmitance correspondence of first filter coating 14 is 585nm ± 3nm; The centre wavelength of 50% transmitance correspondence of second filter coating 15 is 500nm ± 3nm.
Principle of work.Be that example illustrates it now with embodiment 1.The tricolor light isosceles trapezoid color-recombination combined prism of embodiment 1 closes the principle of work of look, as shown in Figure 4.Red, green, blue three coloured light are respectively from the first right angle face 130 of embodiment 1 described combined prism, second bottom surface 122, central plane 110 vertical incidence such as first.Incide on first filter coating 14 with 30 ° of incident angles through prism 13 earlier from the ruddiness of the first right angle face, 130 incidents, see through first filter coating 14 and enter second prism 12, and incide on second bottom surface 122 with 60 ° of incident angles, because incident angle is greater than critical angle, so on second bottom surface 122 total reflection takes place, and incide on second filter coating 15 with 30 ° incident angle, after seeing through second filter coating 15 and entering first prism 11, incide on second central plane such as grade 111, see through second central plane such as grade 111 and penetrate.Incide on first filter coating 14 through the incident angle of second prism 12 earlier from the green glow of second bottom surface, 122 incidents with 30 °, by first filter coating, 14 reflected backs, second prism 12, and incide on second bottom surface 122 with 60 ° incident angle, because incident angle is greater than critical angle, total reflection takes place in green glow on second bottom surface 122, the green glow of reflection incides on second filter coating 15 with 30 ° of incident angles, see through second filter coating 15 and enter first prism 11, and incide on the central plane 111 such as second, see through second central plane such as grade 111 and penetrate.Is that boundary is divided into two parts AP1 and BP1 from the blue light of 110 incidents such as first central plane such as grade with center point P 1, and the route of transmission of this two parts light is different.The BP1 part blue light of incident incides on second filter coating 15 with 30 ° of incident angles earlier, by second filter coating, 15 reflected backs, first prism 11, incides then on second central plane such as grade 111, sees through second central plane such as grade 111 and penetrates; The AP1 part blue light of incident, incide on second filter coating 15 with 30 ° of incident angles, reflexed on first central plane such as grade 110 by second filter coating 15, because the incident angle of light on first central plane such as grade 110 is 60 °, greater than critical angle, therefore total reflection takes place in light on this face, the blue light of reflection incides on second central plane such as grade 111 with 60 ° of incident angles, because incident angle is greater than critical angle, total reflection takes place in light on second central plane such as grade 111, the blue light of reflection incides on second filter coating 15 with 30 ° of incident angles, by 15 reflections of second filter coating, incide on second central plane such as grade 111, see through second central plane such as grade 111 and penetrate.Therefore, from three coloured light of three plane of incidence incidents, through different optical paths, at first filter coating 14, under the effect of the total reflection of second filter coating 15 and faceted pebble, all second central plane such as grade 111 from tricolor light isosceles trapezoid color-recombination combined prism penetrates, and has realized the look that closes of three coloured light.
Combined prism of the present invention is particularly suitable for being used in the display system such as LCD, DLP, LCOS, as closing color device and color separation device.
Claims (6)
1, a kind of tricolor light isosceles trapezoid color-recombination combined prism, it is characterized in that: this combined prism is by first prism (11), second prism (12), prism (13), first filter coating (14) and second filter coating (15) are formed, the bottom surface is an isosceles trapezoid, the prism of straightedge column, first prism (11) is that the bottom surface is the straightedge mirror of isosceles triangle, the base angle of described isosceles triangle is 30 °, first prism (11) contains first central plane such as grade (110), second central plane such as grade (111) and first bottom surface (112), second prism (12) is that the bottom surface is the straightedge mirror of isosceles triangle, the base angle of described isosceles triangle is 30 °, second prism (12) contains C grade central plane (120), fourth class central plane (121) and second bottom surface (122), prism (13) is that the bottom surface is the straightedge mirror of right-angle triangle, a base angle of described right-angle triangle is 30 °, prism (13) contains the first right angle face (130), the second right angle face (131) and first inclined-plane (132), first prism (11), the incline of second prism (12) and prism (13) equates, the length on the base of second bottom surface (122) is 2 times of length on the base of central planes (111) such as first central plane such as grade (110) and second, the equal in length on the base of the length on the base of C grade central plane (120) and first inclined-plane (132), the length on the base of first bottom surface (112) equates with the length sum on the base of the fourth class central plane (121) and the second right angle face (131), first prism (11), second prism (12) and prism (13) are made by optical material, each workplace of described prism all is a polished surface, first inclined-plane (132) and C grade central plane (120) gummed, first bottom surface (112) and the second right angle face (131) and fourth class central plane (121) gummed, on the cemented surface of first inclined-plane (132) and C grade central plane (120), reflect blue and green glow are arranged, see through first filter coating (14) of ruddiness, on the cemented surface of first bottom surface (112) and the second right angle face (131) and fourth class central plane (121), reflect blue is arranged, see through second filter coating (15) of green glow and ruddiness, first filter coating (14) and second filter coating (15) are the depolarization filter coating, two base angles of the bottom surface of described combined prism all are 60 °, two waists equate with upper base, going to the bottom is 2 times of upper base, the blue light plane of incidence is first central plane such as grade (110), the green glow plane of incidence is second bottom surface (122), the ruddiness plane of incidence is the first right angle face (130), and exit facet is second central plane such as grade (111).
2, tricolor light isosceles trapezoid color-recombination combined prism according to claim 1 is characterized in that, the key technical indexes of this combined prism: the bottom surface waist is long to be 10mm; The bottom surface upper base is 10mm; Go to the bottom and be 20mm in the bottom surface; The prism incline is 17.8mm; The centre wavelength of 50% transmitance correspondence of first filter coating (14) is 585nm ± 3nm; The centre wavelength of 50% transmitance correspondence of second filter coating (15) is 500nm ± 3nm.
3, a kind of tricolor light isosceles trapezoid color-recombination combined prism, it is characterized in that: this combined prism is by first prism (11), second prism (12), prism (13), first filter coating (14) and second filter coating (15) are formed, the bottom surface is an isosceles trapezoid, the prism of straightedge column, first prism (11) is that the bottom surface is the straightedge mirror of isosceles triangle, the base angle of described isosceles triangle is 30 °, first prism (11) contains first central plane such as grade (110), second central plane such as grade (111) and first bottom surface (112), second prism (12) is that the bottom surface is the straightedge mirror of isosceles triangle, the base angle of described isosceles triangle is 30 °, second prism (12) contains C grade central plane (120), fourth class central plane (121) and second bottom surface (122), prism (13) is that the bottom surface is the straightedge mirror of right-angle triangle, a base angle of described right-angle triangle is 30 °, prism (13) contains the first right angle face (130), the second right angle face (131) and first inclined-plane (132), first prism (11), the incline of second prism (12) and prism (13) equates, the length on the base of second bottom surface (122) is 2 times of length on the base of central planes (111) such as first central plane such as grade (110) and second, the equal in length on the base of the length on the base of C grade central plane (120) and first inclined-plane (132), the length on the base of first bottom surface (112) equates with the length sum on the base of the fourth class central plane (121) and the second right angle face (131), first prism (11), second prism (12) and prism (13) are made by optical material, each workplace of described prism all is a polished surface, first inclined-plane (132) and C grade central plane (120) gummed, first bottom surface (112) and the second right angle face (131) and fourth class central plane (121) gummed, on the cemented surface of first inclined-plane (132) and C grade central plane (120), reflect red and green glow are arranged, see through first filter coating (14) of blue light, on the cemented surface of first bottom surface (112) and the second right angle face (131) and fourth class central plane (121), reflect red is arranged, see through second filter coating (15) of green glow and blue light, first filter coating (14) and second filter coating (15) are the depolarization filter coating, two base angles of the bottom surface of described combined prism all are 60 °, two waists equate with upper base, going to the bottom is 2 times of upper base, the ruddiness plane of incidence is first central plane such as grade (110), the green glow plane of incidence is second bottom surface (122), the blue light plane of incidence is the first right angle face (130), and exit facet is second central plane such as grade (111).
4, tricolor light isosceles trapezoid color-recombination combined prism according to claim 3 is characterized in that, the key technical indexes of this combined prism: the bottom surface waist is long to be 10mm; The bottom surface upper base is 10mm; Go to the bottom and be 20mm in the bottom surface; The prism incline is 17.8mm; The centre wavelength of 50% transmitance correspondence of first filter coating (14) is 500nm ± 3nm; The centre wavelength of 50% transmitance correspondence of second filter coating (15) is 585nm ± 3nm.
5, a kind of tricolor light isosceles trapezoid color-recombination combined prism, it is characterized in that: this combined prism is by first prism (11), second prism (12), prism (13), first filter coating (14) and second filter coating (15) are formed, the bottom surface is an isosceles trapezoid, the prism of straightedge column, first prism (11) is that the bottom surface is the straightedge mirror of isosceles triangle, the base angle of described isosceles triangle is 30 °, first prism (11) contains first central plane such as grade (110), second central plane such as grade (111) and first bottom surface (112), second prism (12) is that the bottom surface is the straightedge mirror of isosceles triangle, the base angle of described isosceles triangle is 30 °, second prism (12) contains C grade central plane (120), fourth class central plane (121) and second bottom surface (122), prism (13) is that the bottom surface is the straightedge mirror of right-angle triangle, a base angle of described right-angle triangle is 30 °, prism (13) contains the first right angle face (130), the second right angle face (131) and first inclined-plane (132), first prism (11), the incline of second prism (12) and prism (13) equates, the length on the base of second bottom surface (122) is 2 times of length on the base of central planes (111) such as first central plane such as grade (110) and second, the equal in length on the base of the length on the base of C grade central plane (120) and first inclined-plane (132), the length on the base of first bottom surface (112) equates with the length sum on the base of the fourth class central plane (121) and the second right angle face (131), first prism (11), second prism (12) and prism (13) are made by optical material, each workplace of described prism all is a polished surface, first inclined-plane (132) and C grade central plane (120) gummed, first bottom surface (112) and the second right angle face (131) and fourth class central plane (121) gummed, on the cemented surface of first inclined-plane (132) and C grade central plane (120), reflect red is arranged, see through first filter coating (14) of green glow and blue light, on the cemented surface of first bottom surface (112) and the second right angle face (131) and fourth class central plane (121), reflect blue is arranged, see through second filter coating (15) of green glow and ruddiness, first filter coating (14) and second filter coating (15) are the depolarization filter coating, two base angles of the bottom surface of described combined prism all are 60 °, two waists equate with upper base, going to the bottom is 2 times of upper base, the blue light plane of incidence is first central plane such as grade (110), the ruddiness plane of incidence is second bottom surface (122), the green glow plane of incidence is the first right angle face (130), and exit facet is second central plane such as grade (111).
6, tricolor light isosceles trapezoid color-recombination combined prism according to claim 5 is characterized in that, the key technical indexes of this combined prism: the bottom surface waist is long to be 10mm; The bottom surface upper base is 10mm; Go to the bottom and be 20mm in the bottom surface; The prism incline is 17.8mm; The centre wavelength of 50% transmitance correspondence of first filter coating (14) is 585nm ± 3nm; The centre wavelength of 50% transmitance correspondence of second filter coating (15) is 500nm ± 3nm.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101968574B (en) * | 2009-07-28 | 2012-05-09 | 福建华科光电有限公司 | Polarization conversion color-combination prism |
| CN201568808U (en) * | 2009-07-31 | 2010-09-01 | 深圳市光峰光电技术有限公司 | Efficient light-composition stage lighting device |
| CN101718913B (en) * | 2009-12-08 | 2011-07-27 | 福建华科光电有限公司 | Polarization conversion color-combination prism combination |
| CN102096195B (en) * | 2010-12-06 | 2012-09-12 | 西安华科光电有限公司 | Three-dimensionally spectroscopic combined pentaprism |
| WO2015030133A1 (en) * | 2013-08-29 | 2015-03-05 | 富士フイルム株式会社 | Color separation optical assembly and image capture device |
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| JPH1166926A (en) * | 1997-08-22 | 1999-03-09 | Minolta Co Ltd | Lighting system and projecting optical device |
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