CN112630985B - Color separation device and color separation method of black light lens - Google Patents

Color separation device and color separation method of black light lens Download PDF

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CN112630985B
CN112630985B CN202011582320.4A CN202011582320A CN112630985B CN 112630985 B CN112630985 B CN 112630985B CN 202011582320 A CN202011582320 A CN 202011582320A CN 112630985 B CN112630985 B CN 112630985B
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film layer
tio
sio
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prism
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CN112630985A (en
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朱元强
叶沈航
程章彬
方星
廖以旺
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FOCTEK PHOTONICS Inc
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/10—Beam splitting or combining systems
    • G02B27/1006—Beam splitting or combining systems for splitting or combining different wavelengths
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/10—Beam splitting or combining systems
    • G02B27/1006—Beam splitting or combining systems for splitting or combining different wavelengths
    • G02B27/1013—Beam splitting or combining systems for splitting or combining different wavelengths for colour or multispectral image sensors, e.g. splitting an image into monochromatic image components on respective sensors

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Abstract

The invention relates to a color separation device and a color separation method of a black light lens, the color separation device of the black light lens comprises a first prism and a second prism, the first prism and the second prism are right-angle trapezoidal prisms, the outer contour of the first prism comprises a first inclined side surface which is positioned between the other side edges of the first upper bottom surface and the first lower bottom surface and forms an included angle of 53-55 degrees with the first lower bottom surface, the second prism comprises a second inclined side surface which is positioned between the second upper bottom surface and the other side edge of the second lower bottom surface and forms an included angle of 125-.

Description

Color separation device and color separation method of black light lens
Technical Field
The invention relates to a color separation device and a color separation method of a black light lens.
Background
In order to realize full-color image display in black and dark night, the black-light full-color image pickup method includes dividing light entering a lens into visible light and near-infrared light by a light splitting element, receiving the visible light and the near-infrared light by independent sensors respectively, and fully fusing a visible color image and a near-infrared black-and-white image into a clear color image by a processor. If the black light lens adopts the light splitting sheet, double images are generated due to reflection influence of the back surface of the flat sheet, glare is caused by wavelength drift of the light splitting film when the light is incident at a large angle, and the like, so that a color separation device applied to the black light lens needs to be designed.
The 45-degree color separation device of the black-light full-color lens can divide light entering the lens into visible light and near-infrared light parts, then the visible light and the near-infrared light parts are received by independent sensors respectively, and finally, the visible color image and the near-infrared black-and-white image are fully fused into a clear color image through a processor. The 45-degree color separation device divides the incident light into two paths of light which are perpendicular to each other, so that the two sensors are arranged perpendicularly, and the operation is easy. However, the 45-degree prism is affected by the polarization effect of the splitting plane of the prism, and light with partial wavelength is attenuated due to the polarization effect.
Disclosure of Invention
The invention provides a color separation device and a color separation method of a black light lens, wherein the color separation device is applied to the black light lens, can be used for receiving and synthesizing a clear color image by an independent sensor and a processor after light of the black light lens is divided into visible light and near infrared light by the color separation device; and the film layer is less, the preparation is easier and the cost is lower.
The invention is realized by the following technical scheme:
scheme I)
A color separation device of a black light lens comprises a first prism and a second prism, wherein the first prism and the second prism are both right-angle trapezoidal prisms,
the outer contour of the first prism comprises a first upper bottom surface and a first lower bottom surface which are parallel to each other, a first right-angle side surface which is positioned between one side edge of the first upper bottom surface and the first lower bottom surface and is vertical to the first upper bottom surface and the first lower bottom surface, and a first inclined side surface which is positioned between the other side edge of the first upper bottom surface and the first lower bottom surface and has an included angle of 53-55 degrees with the first lower bottom surface are arranged between the first upper bottom surface and the first lower bottom surface,
the second prism comprises a second upper bottom surface and a second lower bottom surface which are parallel to each other, a second right-angle side surface which is positioned between one side edge of the second upper bottom surface and one side edge of the second lower bottom surface and is vertical to the second upper bottom surface and the second lower bottom surface, and a second oblique side surface which is positioned between the other side edge of the second upper bottom surface and the second lower bottom surface and has an included angle of 125-127 degrees with the second lower bottom surface are arranged between the second upper bottom surface and the second lower bottom surface,
the first oblique side surface of the first prism and the second oblique side surface of the second prism are mutually attached in parallel;
the color separation device of the black light lens also comprises a color separation film which is fixedly clamped between the first oblique side surface of the first prism and the second oblique side surface of the second prism,
the color separation film consists of a plurality ofLayer of TiO2Film layer and SiO2The film layer is formed by stacking the film layer in sequence along the direction from the first prism to the second prism, and the color separation film is formed by sequentially stacking the first TiO in sequence along the direction from the first prism to the second prism2Film layer, first SiO2Film layer, second TiO2Film layer, second SiO2Film layer, third TiO2Film layer, third SiO2Film layer, fourth TiO2Film layer, fourth SiO2Film layer, fifth TiO2Film layer, fifth SiO2Film layer, sixth TiO2Film layer, sixth SiO2Film layer, seventh TiO2Film layer, seventh SiO2Film layer, eighth TiO2Film layer, eighth SiO2Film layer, ninth TiO2Film layer, ninth SiO2Film layer, tenth TiO2Film layer, tenth SiO2Film layer, eleventh TiO2Film layer, eleventh SiO2Film layer, twelfth TiO2Film layer and twelfth SiO2A film layer is formed on the surface of the substrate,
the first TiO2The thickness of the film layer is 12-14nm, and the first SiO is2The thickness of the film layer is between 41 and 45nm, and the second TiO2The thickness of the film layer is between 117 and 129nm, and the second SiO is2The thickness of the film layer is between 218 and 241nm, and the third TiO2The thickness of the film layer is between 110-122nm, and the third SiO is2The thickness of the film layer is between 95 and 106nm, and the fourth TiO2The thickness of the film layer is between 129 and 142, and the fourth SiO is2The thickness of the film layer is between 113 and 125nm, and the fifth TiO2The thickness of the film layer is between 223 and 247nm, and the fifth SiO is2The thickness of the film layer is between 111 and 123nm, and the sixth TiO layer2The thickness of the film layer is between 224-248nm, and the sixth SiO is2The thickness of the film layer is between 113 and 125nm, and the seventh TiO2The thickness of the film layer is between 220-243nm, and the seventh SiO layer2The thickness of the film layer is between 104-115nm, and the eighth TiO2The thickness of the film layer is between 194 nm and 215nm, and the eighth SiO2The thickness of the film layer is 93-103nm, and the ninth TiO2The thickness of the film layer is between 185-205nm, and the ninth SiO layer2The thickness of the film layer is 92-102nm, and the tenth TiO layer2The thickness of the film layer is between 178-197nm, and the tenth SiO2Of a film layerThe thickness of the film is 94-104nm, and the eleventh TiO2The thickness of the film layer is between 182 and 201nm, and the eleventh SiO2The thickness of the film layer is 92-102nm, and the twelfth TiO layer2The thickness of the film is 195-215nm, and the twelfth SiO is2The thickness of the film layer is between 102nm and 113 nm.
Further, the first prism and the second prism are both made of glass materials with refractive indexes of 1.49-1.65.
A color separation method is characterized in that natural light enters from a first right-angle side face of a color separation device perpendicular to a black light lens, light with the wavelength range of 450-650nm sequentially passes through a first prism, a color separation film and a second prism along a straight line through a color separation film fixedly clamped between a first oblique side face of the first prism and a second oblique side face of the second prism and then is emitted from the second right-angle side face, and light with the wavelength range of 800-1100nm is reflected on the color separation film and then is emitted along a first lower bottom face of the first prism.
Scheme two)
A color separation device of a black light lens comprises a first prism and a second prism;
the first prism is formed by obliquely cutting off a right-angle part at one right-angle part of a right-angle trapezoidal prism; the outer contour of the first prism comprises a first upper bottom surface and a first lower bottom surface which are parallel to each other, and a first right-angle side surface, a first oblique side surface and a beveling emergent surface are arranged between the first upper bottom surface and the first lower bottom surface; the first right-angle side face is perpendicular to the first upper bottom face and the first lower bottom face, the upper side edge of the first right-angle side face is connected with the first upper bottom face, the lower side edge of the first right-angle side face is connected with one side edge of the inclined-cut emergent face, the other side edge of the inclined-cut emergent face is connected with one side edge of the first lower bottom face, and the included angle between the inclined-cut emergent face and the first lower bottom face is 160-164 degrees; the first inclined side surface is positioned between the other side edge of the first upper bottom surface and the other side edge of the first lower bottom surface, and the included angle between the first inclined side surface and the first lower bottom surface is 53-55 degrees;
the second prism is a right-angle trapezoidal prism; the second prism comprises a second upper bottom surface and a second lower bottom surface which are parallel to each other, a second right-angle side surface which is positioned between one side edge of the second upper bottom surface and one side edge of the second lower bottom surface and is vertical to the second upper bottom surface and the second lower bottom surface, and a second oblique side surface which is positioned between the other side edge of the second upper bottom surface and the second lower bottom surface and has an included angle of 125-127 degrees with the second lower bottom surface are arranged between the second upper bottom surface and the second lower bottom surface,
the first oblique side surface of the first prism and the second oblique side surface of the second prism are mutually attached in parallel;
the color separation device of the black light lens also comprises a color separation film which is fixedly clamped between the first oblique side surface of the first prism and the second oblique side surface of the second prism,
the color separation film is made of multilayer TiO2Film layer and SiO2The film layer is formed by stacking the film layer in sequence along the direction from the first prism to the second prism, and the color separation film is formed by sequentially stacking the first TiO in sequence along the direction from the first prism to the second prism2Film layer, first SiO2Film layer, second TiO2Film layer, second SiO2Film layer, third TiO2Film layer, third SiO2Film layer, fourth TiO2Film layer, fourth SiO2Film layer, fifth TiO2Film layer, fifth SiO2Film layer, sixth TiO2Film layer, sixth SiO2Film layer, seventh TiO2Film layer, seventh SiO2Film layer, eighth TiO2Film layer, eighth SiO2Film layer, ninth TiO2Film layer, ninth SiO2Film layer, tenth TiO2Film layer, tenth SiO2Film layer, eleventh TiO2Film layer, eleventh SiO2Film layer, twelfth TiO2Film layer and twelfth SiO2A film layer is formed on the surface of the substrate,
the first TiO2The thickness of the film layer is 12-14nm, and the first SiO is2The thickness of the film layer is between 41 and 45nm, and the second TiO2The thickness of the film layer is between 117 and 129nm, and the second SiO is2The thickness of the film layer is between 218 and 241nm, and the third TiO2The thickness of the film layer is between 110-122nm, and the third SiO is2The thickness of the film layer is between 95 and 106nm, and the fourth TiO2The thickness of the film layer is between 129 and 142, and the fourth SiO is2Film layerThe thickness of the first TiO layer is between 113 and 125nm, and the fifth TiO layer2The thickness of the film layer is between 223 and 247nm, and the fifth SiO is2The thickness of the film layer is between 111 and 123nm, and the sixth TiO layer2The thickness of the film layer is between 224-248nm, and the sixth SiO is2The thickness of the film layer is between 113 and 125nm, and the seventh TiO2The thickness of the film layer is between 220-243nm, and the seventh SiO layer2The thickness of the film layer is between 104-115nm, and the eighth TiO2The thickness of the film layer is between 194 nm and 215nm, and the eighth SiO2The thickness of the film layer is 93-103nm, and the ninth TiO2The thickness of the film layer is between 185-205nm, and the ninth SiO layer2The thickness of the film layer is 92-102nm, and the tenth TiO layer2The thickness of the film layer is between 178-197nm, and the tenth SiO2The thickness of the film layer is between 94 and 104nm, and the eleventh TiO2The thickness of the film layer is between 182 and 201nm, and the eleventh SiO2The thickness of the film layer is 92-102nm, and the twelfth TiO layer2The thickness of the film is 195-215nm, and the twelfth SiO is2The thickness of the film layer is between 102nm and 113 nm.
Further, the first prism and the second prism are both made of glass materials with refractive indexes of 1.49-1.65.
A color separation method, characterized by: the natural light is made to enter from a first right-angle side surface of the color separation device which is vertical to the black light lens, the light with the wavelength range of 450-fold and 650nm sequentially passes through the first prism, the color separation film and the second prism along a straight line through the color separation film fixedly clamped between the first oblique side surface of the first prism and the second oblique side surface of the second prism and then is emitted from the second right-angle side surface, and the light with the wavelength range of 800-fold and 1100nm is reflected on the color separation film and then is vertically emitted along the emitting surface of the first prism.
Compared with the prior art, the invention has the following beneficial effects:
the invention can realize Tave > 90% @ 450-.
Compared with a 45-degree prism, the invention not only can reduce the polarization effect influence of the prism and ensure higher transmission and reflectivity through the design of a small-angle incident structure and the design of a color separation film with a depolarization effect; and the film layer is less, the preparation is easier and the cost is lower.
The color separation device and the color separation method of the black light lens can collect light rays as much as possible in the visible light and near infrared light wide spectrum, wherein the light rays are within the range of the visible light spectrum of 450-plus-650 and the light rays are within the range of the near infrared spectrum of 800-plus-1100 nm, so that the high-definition full-color imaging effect in the black light environment is realized.
Drawings
FIG. 1 is a graph of the spectral effect of example 1,
figure 2 is a graph of the spectral effect of example 2,
figure 3 is a graph of the spectral effect of example 3,
fig. 4 is a schematic structural diagram of the present invention.
Detailed Description
Scheme I)
A color separation device of a black light lens comprises a first prism 1 and a second prism 2, wherein the first prism 1 and the second prism 2 are both right-angle trapezoidal prisms,
the outer contour of the first prism 1 comprises a first upper bottom surface 1-1 and a first lower bottom surface 1-2 which are parallel to each other, a first right-angle side surface 1-3 which is positioned between one side edges of the first upper bottom surface 1-1 and the first lower bottom surface 1-2 and is vertical to the first upper bottom surface 1-1 and the first lower bottom surface 1-2 and a first inclined side surface 1-4 which is positioned between the other side edges of the first upper bottom surface 1-1 and the first lower bottom surface 1-2 and has an included angle of 53 degrees to 55 degrees with the first lower bottom surface 1-2 are arranged between the first upper bottom surface 1-1 and the first lower bottom surface 1-2,
the second prism 2 comprises a second upper bottom surface 2-1 and a second lower bottom surface 2-2 which are parallel to each other, a second right-angled side surface 2-3 which is positioned between one side edge of the second upper bottom surface 2-1 and the second lower bottom surface 2-2 and is vertical to the second upper bottom surface 2-1 and the second lower bottom surface 2-2 and a second inclined side surface 2-4 which is positioned between the other side edge of the second upper bottom surface 2-1 and the second lower bottom surface 2-2 and has an included angle of 125-127 degrees with the second lower bottom surface 2-2 are arranged between the second upper bottom surface 2-1 and the second lower bottom surface 2-2,
the first oblique side surface 1-4 of the first prism 1 and the second oblique side surface 2-4 of the second prism 2 are mutually attached in parallel;
the color separation device of the black light lens also comprises a color separation film 3 fixedly clamped between a first oblique side surface 1-4 of the first prism 1 and a second oblique side surface 2-4 of the second prism 2,
the color separation film 3 is made of multilayer TiO2Film layer and SiO2The film layer is formed by stacking the film layer along the direction from the first prism 1 to the second prism 2 in turn, and the color separation film 3 is a first TiO film along the direction from the first prism 1 to the second prism 2 in turn2Film layer, first SiO2Film layer, second TiO2Film layer, second SiO2Film layer, third TiO2Film layer, third SiO2Film layer, fourth TiO2Film layer, fourth SiO2Film layer, fifth TiO2Film layer, fifth SiO2Film layer, sixth TiO2Film layer, sixth SiO2Film layer, seventh TiO2Film layer, seventh SiO2Film layer, eighth TiO2Film layer, eighth SiO2Film layer, ninth TiO2Film layer, ninth SiO2Film layer, tenth TiO2Film layer, tenth SiO2Film layer, eleventh TiO2Film layer, eleventh SiO2Film layer, twelfth TiO2Film layer and twelfth SiO2A film layer is formed on the surface of the substrate,
the first TiO2The thickness of the film layer is 12-14nm, and the first SiO is2The thickness of the film layer is between 41 and 45nm, and the second TiO2The thickness of the film layer is between 117 and 129nm, and the second SiO is2The thickness of the film layer is between 218 and 241nm, and the third TiO2The thickness of the film layer is between 110-122nm, and the third SiO is2The thickness of the film layer is between 95 and 106nm, and the fourth TiO2The thickness of the film layer is between 129 and 142, and the fourth SiO is2The thickness of the film layer is between 113 and 125nm, and the fifth TiO2The thickness of the film layer is between 223 and 247nm, and the fifth SiO is2The thickness of the film layer is between 111 and 123nm, and the sixth TiO layer2The thickness of the film layer is between 224-248nm, and the sixth SiO is2The thickness of the film layer is between 113 and 125nm, and the seventh TiO2The thickness of the film is between 220-243nmSeven SiO 22The thickness of the film layer is between 104-115nm, and the eighth TiO2The thickness of the film layer is between 194 nm and 215nm, and the eighth SiO2The thickness of the film layer is 93-103nm, and the ninth TiO2The thickness of the film layer is between 185-205nm, and the ninth SiO layer2The thickness of the film layer is 92-102nm, and the tenth TiO layer2The thickness of the film layer is between 178-197nm, and the tenth SiO2The thickness of the film layer is between 94 and 104nm, and the eleventh TiO2The thickness of the film layer is between 182 and 201nm, and the eleventh SiO2The thickness of the film layer is 92-102nm, and the twelfth TiO layer2The thickness of the film is 195-215nm, and the twelfth SiO is2The thickness of the film layer is between 102nm and 113 nm.
Further, the first prism 1 and the second prism 2 are both made of glass materials with refractive indexes of 1.49-1.65.
A color separation method is characterized in that natural light enters from a first right-angle side face 1-3 of a color separation device perpendicular to a black light lens, light with the wavelength range of 450-650nm sequentially passes through a first prism 1, a color separation film 3 and a second prism 2 along a straight line through a color separation film 3 fixedly clamped between a first inclined side face 1-4 of the first prism 1 and a second inclined side face 2-4 of the second prism 2 and then is emitted from the second right-angle side face 2-3, and light with the wavelength range of 800-1100nm is reflected on the color separation film 3 and then is emitted along a first lower bottom face 1-2 of the first prism 1.
Scheme two
A color separation device of a black light lens comprises a first prism 1 and a second prism 2;
the first prism 1 is formed by obliquely cutting off a right-angle part at one right-angle part of a right-angle trapezoidal prism; the outer contour of the first prism 1 comprises a first upper bottom surface 1-1 and a first lower bottom surface 1-2 which are parallel to each other, and a first right-angle side surface 1-3, a first oblique side surface 1-4 and a beveling emergent surface 1-5 are arranged between the first upper bottom surface 1-1 and the first lower bottom surface 1-2; the first right-angle side face 1-3 is vertical to the first upper bottom face 1-1 and the first lower bottom face 1-2, the upper side edge of the first right-angle side face 1-3 is connected with the first upper bottom face 1-1, the lower side edge of the first right-angle side face 1-3 is connected with one side edge of the inclined-cut emergent face 1-5, the other side edge of the inclined-cut emergent face 1-5 is connected with one side edge of the first lower bottom face 1-2, and the included angle between the inclined-cut emergent face 1-5 and the first lower bottom face 1-2 is 160-164 degrees; the first inclined side face 1-4 is positioned between the other side edges of the first upper bottom face 1-1 and the first lower bottom face 1-2, and the included angle between the first inclined side face 1-4 and the first lower bottom face 1-2 is 53-55 degrees;
the second prism 2 is a right-angle trapezoidal prism; the second prism 2 comprises a second upper bottom surface 2-1 and a second lower bottom surface 2-2 which are parallel to each other, a second right-angled side surface 2-3 which is positioned between one side edge of the second upper bottom surface 2-1 and the second lower bottom surface 2-2 and is vertical to the second upper bottom surface 2-1 and the second lower bottom surface 2-2 and a second inclined side surface 2-4 which is positioned between the other side edge of the second upper bottom surface 2-1 and the second lower bottom surface 2-2 and has an included angle of 125-127 degrees with the second lower bottom surface 2-2 are arranged between the second upper bottom surface 2-1 and the second lower bottom surface 2-2,
the first oblique side surface 1-4 of the first prism 1 and the second oblique side surface 2-4 of the second prism 2 are mutually attached in parallel;
the color separation device of the black light lens also comprises a color separation film 3 fixedly clamped between a first oblique side surface 1-4 of the first prism 1 and a second oblique side surface 2-4 of the second prism 2,
the color separation film 3 is made of multilayer TiO2Film layer and SiO2The film layer is formed by stacking the film layer along the direction from the first prism 1 to the second prism 2 in turn, and the color separation film 3 is a first TiO film along the direction from the first prism 1 to the second prism 2 in turn2Film layer, first SiO2Film layer, second TiO2Film layer, second SiO2Film layer, third TiO2Film layer, third SiO2Film layer, fourth TiO2Film layer, fourth SiO2Film layer, fifth TiO2Film layer, fifth SiO2Film layer, sixth TiO2Film layer, sixth SiO2Film layer, seventh TiO2Film layer, seventh SiO2Film layer, eighth TiO2Film layer, eighth SiO2Film layer, ninth TiO2Film layer, ninth SiO2Film layer, tenth TiO2Film layer, tenth SiO2Film layer, eleventh TiO2Film layer, eleventh SiO2Film layer, firstTwelve TiO 22Film layer and twelfth SiO2A film layer is formed on the surface of the substrate,
the first TiO2The thickness of the film layer is 12-14nm, and the first SiO is2The thickness of the film layer is between 41 and 45nm, and the second TiO2The thickness of the film layer is between 117 and 129nm, and the second SiO is2The thickness of the film layer is between 218 and 241nm, and the third TiO2The thickness of the film layer is between 110-122nm, and the third SiO is2The thickness of the film layer is between 95 and 106nm, and the fourth TiO2The thickness of the film layer is between 129 and 142, and the fourth SiO is2The thickness of the film layer is between 113 and 125nm, and the fifth TiO2The thickness of the film layer is between 223 and 247nm, and the fifth SiO is2The thickness of the film layer is between 111 and 123nm, and the sixth TiO layer2The thickness of the film layer is between 224-248nm, and the sixth SiO is2The thickness of the film layer is between 113 and 125nm, and the seventh TiO2The thickness of the film layer is between 220-243nm, and the seventh SiO layer2The thickness of the film layer is between 104-115nm, and the eighth TiO2The thickness of the film layer is between 194 nm and 215nm, and the eighth SiO2The thickness of the film layer is 93-103nm, and the ninth TiO2The thickness of the film layer is between 185-205nm, and the ninth SiO layer2The thickness of the film layer is 92-102nm, and the tenth TiO layer2The thickness of the film layer is between 178-197nm, and the tenth SiO2The thickness of the film layer is between 94 and 104nm, and the eleventh TiO2The thickness of the film layer is between 182 and 201nm, and the eleventh SiO2The thickness of the film layer is 92-102nm, and the twelfth TiO layer2The thickness of the film is 195-215nm, and the twelfth SiO is2The thickness of the film layer is between 102nm and 113 nm.
Further, the first prism 1 and the second prism 2 are both made of glass materials with refractive indexes of 1.49-1.65.
A color separation method is characterized in that natural light enters from a first right-angle side face 1-3 of a color separation device perpendicular to a black light lens, light with the wavelength range of 450-.
The following embodiments 1 to 3 adopt the scheme of the second scheme, and the scheme of the second scheme) can ensure that the emergent surface keeps normal incidence, and reduce the angle influence.
The thickness of each film layer of examples 1-3 is shown in table 1.
Table 1 thickness of each film layer of examples 1-3
Figure GDA0003177644190000081
Figure GDA0003177644190000091
As shown in FIGS. 1-3, in the embodiments 1-3 of the present invention, under the conditions of an incident angle of 35 ° and a light cone angle of 25 ° -35 °, Tave > 90% @ 450-. Incident light with an incident angle of 36 ° or 37 ° may also be used.
The first prism 1 and the second prism 2 are made of glass materials with refractive indexes of 1.49-1.65. The above examples use glass materials having a refractive index of 1.57, and may use glass materials of 1.49 and 1.65.
The incident light, the transmitted light and the reflected light are shown in FIG. 4, a color separation method, natural light enters from the first right-angle side 1-3 of the color separation device of the black lens, then the light with the wavelength range of 450 and 650nm sequentially passes through the first prism 1, the color separation film 3 and the second prism 2 along a straight line and passes out from the second right-angle side, the light with the wavelength range of 800 and 1100nm is reflected on the color separation film 3 in a mirror surface mode and then vertically exits from the exit surface 1-5 along the first prism 1.
The present invention is not limited to the above-described embodiments, and any modification or replacement according to the principle of the present invention should be within the scope of the present invention.

Claims (6)

1. A color separation device of a black light lens is characterized in that: comprises a first prism (1) and a second prism (2), wherein the first prism (1) and the second prism (2) are both right-angle trapezoidal prisms,
the outer contour of the first prism (1) comprises a first upper bottom surface (1-1) and a first lower bottom surface (1-2) which are parallel to each other, a first right-angle side surface (1-3) which is positioned between one side edges of the first upper bottom surface (1-1) and the first lower bottom surface (1-2) and is vertical to the first upper bottom surface (1-1) and the first lower bottom surface (1-2) and a first oblique side surface (1-4) which is positioned between the other side edges of the first upper bottom surface (1-1) and the first lower bottom surface (1-2) and has an included angle of 53-55 degrees with the first lower bottom surface (1-2) are arranged between the first upper bottom surface (1-1) and the first lower bottom surface (1-2),
the second prism (2) comprises a second upper bottom surface (2-1) and a second lower bottom surface (2-2) which are parallel to each other, a second right-angle side surface (2-3) which is positioned between one side edges of the second upper bottom surface (2-1) and the second lower bottom surface (2-2) and is vertical to the second upper bottom surface (2-1) and the second lower bottom surface (2-2) and a second inclined side surface (2-4) which is positioned between the other side edges of the second upper bottom surface (2-1) and the second lower bottom surface (2-2) and has an included angle of 125-127 degrees with the second lower bottom surface (2-2) are arranged between the second upper bottom surface (2-1) and the second lower bottom surface (2-2),
the first oblique side surface (1-4) of the first prism (1) and the second oblique side surface (2-4) of the second prism (2) are mutually attached in parallel;
the color separation device of the black light lens also comprises a color separation film (3) fixedly clamped between a first inclined side surface (1-4) of the first prism (1) and a second inclined side surface (2-4) of the second prism (2),
the color separation film (3) is made of multilayer TiO2Film layer and SiO2The film layer is formed by stacking the film layer along the direction from the first prism (1) to the second prism (2) in sequence, and the color separation film (3) is first TiO along the direction from the first prism (1) to the second prism (2) in sequence2Film layer, first SiO2Film layer, second TiO2Film layer, second SiO2Film layer, third TiO2Film layer, third SiO2Film layer, fourth TiO2Film layer, fourth SiO2Film layer, fifth TiO2Film layer, fifth SiO2Film layer, sixth TiO2Film layer, sixth SiO2Film layer, seventh TiO2Film layer, seventh SiO2Film layer, eighth TiO2Film layer, eighth SiO2Film layer, ninth TiO2Film layer, ninth SiO2Film layer, tenth TiO2Film layer, tenth SiO2Film layer, eleventh TiO2Film layer, eleventh SiO2Film layer, twelfth TiO2Film layer and twelfth SiO2A film layer is formed on the surface of the substrate,
the first TiO2The thickness of the film layer is 12-14nm, and the first SiO is2The thickness of the film layer is between 41 and 45nm, and the second TiO2The thickness of the film layer is between 117 and 129nm, and the second SiO is2The thickness of the film layer is between 218 and 241nm, and the third TiO2The thickness of the film layer is between 110-122nm, and the third SiO is2The thickness of the film layer is between 95 and 106nm, and the fourth TiO2The thickness of the film layer is between 129 and 142, and the fourth SiO is2The thickness of the film layer is between 113 and 125nm, and the fifth TiO2The thickness of the film layer is between 223 and 247nm, and the fifth SiO is2The thickness of the film layer is between 111 and 123nm, and the sixth TiO layer2The thickness of the film layer is between 224-248nm, and the sixth SiO is2The thickness of the film layer is between 113 and 125nm, and the seventh TiO2The thickness of the film layer is between 220-243nm, and the seventh SiO layer2The thickness of the film layer is between 104-115nm, and the eighth TiO2The thickness of the film layer is between 194 nm and 215nm, and the eighth SiO2The thickness of the film layer is 93-103nm, and the ninth TiO2The thickness of the film layer is between 185-205nm, and the ninth SiO layer2The thickness of the film layer is 92-102nm, and the tenth TiO layer2The thickness of the film layer is between 178-197nm, and the tenth SiO2The thickness of the film layer is between 94 and 104nm, and the eleventh TiO2The thickness of the film layer is between 182 and 201nm, and the eleventh SiO2The thickness of the film layer is 92-102nm, and the twelfth TiO layer2The thickness of the film is 195-215nm, and the twelfth SiO is2The thickness of the film layer is between 102nm and 113 nm.
2. The color separation device of a black light lens according to claim 1, wherein: the first prism (1) and the second prism (2) are both made of glass materials with refractive indexes of 1.49-1.65.
3. A color separation device of a black light lens is characterized in that: comprises a first prism (1) and a second prism (2);
the first prism (1) is formed by obliquely cutting off a right-angle part at one right-angle part of a right-angle trapezoidal prism; the outer contour of the first prism (1) comprises a first upper bottom surface (1-1) and a first lower bottom surface (1-2) which are parallel to each other, and a first right-angle side surface (1-3), a first oblique side surface (1-4) and a beveling emergent surface (1-5) are arranged between the first upper bottom surface (1-1) and the first lower bottom surface (1-2); the first right-angle side face (1-3) is vertical to the first upper bottom face (1-1) and the first lower bottom face (1-2), the upper side edge of the first right-angle side face (1-3) is connected with the first upper bottom face (1-1), the lower side edge of the first right-angle side face (1-3) is connected with one side edge of the inclined-cut emergent face (1-5), the other side edge of the inclined-cut emergent face (1-5) is connected with one side edge of the first lower bottom face (1-2), and the included angle between the inclined-cut emergent face (1-5) and the first lower bottom face (1-2) is 160-164 degrees; the first inclined side surface (1-4) is positioned between the other side edge of the first upper bottom surface (1-1) and the other side edge of the first lower bottom surface (1-2) and forms an included angle of 53-55 degrees with the first lower bottom surface (1-2);
the second prism (2) is a right-angle trapezoidal prism; the second prism (2) comprises a second upper bottom surface (2-1) and a second lower bottom surface (2-2) which are parallel to each other, a second right-angle side surface (2-3) which is positioned between one side edges of the second upper bottom surface (2-1) and the second lower bottom surface (2-2) and is vertical to the second upper bottom surface (2-1) and the second lower bottom surface (2-2) and a second inclined side surface (2-4) which is positioned between the other side edges of the second upper bottom surface (2-1) and the second lower bottom surface (2-2) and has an included angle of 125-127 degrees with the second lower bottom surface (2-2) are arranged between the second upper bottom surface (2-1) and the second lower bottom surface (2-2),
the first oblique side surface (1-4) of the first prism (1) and the second oblique side surface (2-4) of the second prism (2) are mutually attached in parallel;
the color separation device of the black light lens also comprises a color separation film (3) fixedly clamped between a first oblique side surface (1-4) of the first prism (1) and a second oblique side surface (2-4) of the second prism (2),
the color separation film (3) is made of multilayer TiO2Film layer and SiO2The film layer is formed by stacking the film layer along the direction from the first prism (1) to the second prism (2) in sequence, and the color separation film (3) is first TiO along the direction from the first prism (1) to the second prism (2) in sequence2Film layer, first SiO2Film layer, second TiO2Film layer, second SiO2Film layer, third TiO2Film layer, third SiO2Film layer, fourth TiO2Film layer, fourth SiO2Film layer, fifth TiO2Film layer, fifth SiO2Film layer, sixth TiO2Film layer, sixth SiO2Film layer, seventh TiO2Film layer, seventh SiO2Film layer, eighth TiO2Film layer, eighth SiO2Film layer, ninth TiO2Film layer, ninth SiO2Film layer, tenth TiO2Film layer, tenth SiO2Film layer, eleventh TiO2Film layer, eleventh SiO2Film layer, twelfth TiO2Film layer and twelfth SiO2A film layer is formed on the surface of the substrate,
the first TiO2The thickness of the film layer is 12-14nm, and the first SiO is2The thickness of the film layer is between 41 and 45nm, and the second TiO2The thickness of the film layer is between 117 and 129nm, and the second SiO is2The thickness of the film layer is between 218 and 241nm, and the third TiO2The thickness of the film layer is between 110-122nm, and the third SiO is2The thickness of the film layer is between 95 and 106nm, and the fourth TiO2The thickness of the film layer is between 129 and 142, and the fourth SiO is2The thickness of the film layer is between 113 and 125nm, and the fifth TiO2The thickness of the film layer is between 223 and 247nm, and the fifth SiO is2The thickness of the film layer is between 111 and 123nm, and the sixth TiO layer2The thickness of the film layer is between 224-248nm, and the sixth SiO is2The thickness of the film layer is between 113 and 125nm, and the seventh TiO2The thickness of the film layer is between 220-243nm, and the seventh SiO layer2The thickness of the film layer is between 104-115nm, and the eighth TiO2The thickness of the film layer is between 194 nm and 215nm, and the eighth SiO2The thickness of the film layer is 93-103nm, and the ninth TiO2The thickness of the film layer is between 185-205nm, and the ninth SiO layer2The thickness of the film layer is 92-102nmMeta, tenth TiO2The thickness of the film layer is between 178-197nm, and the tenth SiO2The thickness of the film layer is between 94 and 104nm, and the eleventh TiO2The thickness of the film layer is between 182 and 201nm, and the eleventh SiO2The thickness of the film layer is 92-102nm, and the twelfth TiO layer2The thickness of the film is 195-215nm, and the twelfth SiO is2The thickness of the film layer is between 102nm and 113 nm.
4. A color separation device for a black-light lens according to claim 3, wherein: the first prism (1) and the second prism (2) are both made of glass materials with refractive indexes of 1.49-1.65.
5. A color separation method, characterized by: the natural light is made to enter from the first right-angle side surface (1-3) of the color separation device vertical to the black light lens as claimed in claim 1 or 2, the light with the wavelength range of 450-.
6. A color separation method, characterized by: the natural light is made to enter from the first right-angle side (1-3) of the color separation device perpendicular to the black light lens as claimed in claim 3 or 4, the light with the wavelength range of 450-.
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