WO2017006710A1 - Élément guide de lumière, élément d'émission de lumière et procédé d'émission de lumière - Google Patents

Élément guide de lumière, élément d'émission de lumière et procédé d'émission de lumière Download PDF

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Publication number
WO2017006710A1
WO2017006710A1 PCT/JP2016/067579 JP2016067579W WO2017006710A1 WO 2017006710 A1 WO2017006710 A1 WO 2017006710A1 JP 2016067579 W JP2016067579 W JP 2016067579W WO 2017006710 A1 WO2017006710 A1 WO 2017006710A1
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WIPO (PCT)
Prior art keywords
light
angle
slope
optical axis
gas
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PCT/JP2016/067579
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English (en)
Japanese (ja)
Inventor
雄司 興
金市 森田
Original Assignee
国立大学法人九州大学
ウシオ電機株式会社
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Application filed by 国立大学法人九州大学, ウシオ電機株式会社 filed Critical 国立大学法人九州大学
Publication of WO2017006710A1 publication Critical patent/WO2017006710A1/fr

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/01—Arrangements or apparatus for facilitating the optical investigation
    • G01N21/03—Cuvette constructions
    • G01N21/05—Flow-through cuvettes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
    • G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
    • G01N21/64—Fluorescence; Phosphorescence
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/42—Coupling light guides with opto-electronic elements

Definitions

  • the present invention relates to a light guide member, a light lead-out member, and a light lead-out method, and more particularly to a plate-like light guide member and the like mainly made of a silicone resin, including a light lead-out portion for leading light to the outside.
  • ⁇ TAS micro total analysis system
  • the microchip is a reaction area in which a reagent is disposed in the flow path 10 also called a microchannel provided in the microchip, an area having various functions such as a fluid control element (micro pump, micro valve, micro mixer, filter, sensor)
  • a fluid control element micro pump, micro valve, micro mixer, filter, sensor
  • the above-described microchip typically has a structure in which a pair of microchip substrates are bonded to face each other, and a fine flow path 10 (for example, 10 to several hundred ⁇ m in width) is formed on the surface of at least one of the above microchip substrates. And a depth of about 10 to several hundred ⁇ m).
  • a fine flow path 10 for example, 10 to several hundred ⁇ m in width
  • microchips Typical applications of microchips are analysis in the fields of genetic analysis, clinical diagnosis, chemistry such as drug screening, biochemistry, pharmacy, medicine, and veterinary medicine, or synthesis of compounds and environmental measurement.
  • a microchip it is possible to carry out various chemical operations such as solution mixing, reaction, separation, purification, detection and the like. Then, by incorporating the microchip into the analysis device, the reaction or the like performed in the microchip is detected by the analysis device.
  • a microchip is used as a fluorescence sensor, as an analysis device, for example, a light source composed of a laser or the like that emits monochromatic light, and fluorescence emitted from a sample in a microchip flow path to which light from the light source is irradiated And the like. That is, various analyzes are carried out by incorporating the microchip into an analyzer dedicated to the content of analysis.
  • An example of the above-mentioned analytical instrument is a light analyzer proposed by the inventors (Patent Document 1).
  • FIG. 1 shows an example of the configuration of the light analysis device 101 described above.
  • the light analysis device 101 has a display 103 and a control unit for controlling an image displayed on the display 103 and an arithmetic function, a so-called tablet terminal 105, and a microchip 111 having a light introducing unit 107 and a light deriving unit 109. It consists of In the light analysis device 101, the light introducing unit 107 of the microchip 111 is disposed at a predetermined position on the display 103.
  • the control unit causes a portion on the display 103 corresponding to the light introducing unit 107 to emit light.
  • the light emitted from the light introducing unit 107 and guided to the inside of the microchip 111 is emitted to the fluid containing the sample introduced into the flow path 113 of the microchip 111. Then, light (for example, fluorescence) emitted from the fluid containing the light-irradiated specimen is led out from the light lead-out portion 109 of the microchip.
  • the light guided to the outside is received by, for example, the camera of the tablet terminal 105, and based on the received light information, the tablet terminal 105 performs arithmetic processing in accordance with a predetermined analysis program.
  • LOT Labo on Tablet
  • the microchip 111 in which light is introduced into the interior of the light derived from the microchip is usually made of a silicone resin such as PDMS, which has good light transmittance.
  • a silicone resin such as PDMS
  • the shape of the microchip 111 for analysis in LOT is a plate, and at least the lower surface side of the surface of the microchip 111 in close contact with the LOT surface is a horizontal surface.
  • the lower surface side of the surface of the microchip 111 described above is referred to as “lower surface 112”.
  • the light guide path 115 for guiding the light irradiated to the flow path 113 or the sample (specimen) in the flow path 113 is a sample injection unit 117 which communicates with the flow path 113 It extends in a direction parallel to the lower surface of the microchip 111 except for the sample discharge part 118, the light introduction part 107 for introducing light into the light guide path 115, and the light extraction part 109 for emitting light from the light guide path 115 to the outside. Configured as.
  • the light introduced into the light introducing portion 107 of the microchip 111 described above is introduced from a predetermined incident angle direction with respect to the lower surface of the microchip 111.
  • the introduced light is introduced from a direction perpendicular to the lower surface 112. (See Figure 2 (a)). Arrows in FIG. 2 indicate the traveling direction of light.
  • the light derived from the light lead-out portion 109 1 of the microchip 111 is also derived for the lower side surface of the microchip 111 from a predetermined output angle direction.
  • the derivation light is derived in a direction perpendicular to the lower surface 112 (FIG. 2 See (a)).
  • the position of the light lead-out portion 109 of the microchip 111 corresponds to the position of the light incident portion of the camera 119 of the tablet terminal 105
  • light is drawn from the lower surface 112 of the microchip 111.
  • the light guiding device 121 such as an optical fiber.
  • the light path can be made the shortest distance.
  • the light guide inside the microchip is horizontal (in the direction parallel to the lower surface of the microchip, ie, the direction in which the light guide extends).
  • the microchip 111 is provided with a total reflection surface on which the light traveling inside the microchip 111 in the horizontal direction is totally reflected at an angle of 45 degrees (hereinafter referred to as “Structure 1”).
  • Structure 1 a total reflection surface on which the light traveling inside the microchip 111 in the horizontal direction is totally reflected at an angle of 45 degrees
  • a hole is formed in the microchip 111 for causing the above-mentioned traveling light to be critically reflected at an angle of 45 degrees (hereinafter referred to as [Structure 2]).
  • the structural example of said [structure 1] [structure 2] is demonstrated concretely.
  • the structures such as the structure 1 and the structure 2 illustrated below with reference to FIGS. 3 and 4 are structures that are not known at the time of filing of the present application.
  • the light guide path of the microchip 121 is made of a reflection plate 125 made of a material such as metal inclined 45 degrees with respect to the optical axis 123 of the light traveling in the horizontal direction. It is embedded in the part 127 and has a 45 ° total reflection surface.
  • an inclined surface inclined 45 degrees with respect to the optical axis 123 of the light traveling through the light guide path 122 is provided in the light lead-out portion 127 of the microchip, and a metal material is deposited on this inclined surface May be According to the structure of the structure 1 shown in FIG. 3, it is possible to fold the light traveling in the horizontal direction 90 degrees through the light guide path 122 inside the microchip 121, which is incident on the inclined reflector 125 as described above. .
  • FIG. 2 The structural example of the structure 2 is shown in FIG.
  • the structure 2 when light traveling in the horizontal direction in the light guide 130 inside the microchip 129 is incident, the light guide hole has an inclined surface for performing critical reflection of this light at 45 degrees.
  • the light source 131 is provided in the light lead-out portion 133 of the microchip 129.
  • the refractive index of the silicone resin constituting the microchip 129 is larger than the refractive index of the atmosphere.
  • atmosphere is provided in the light guide hole 131 of the microchip 129 which consists of silicone resin using this characteristic.
  • the angle of the slope 135 is set such that the incident angle when the light traveling in the horizontal direction is incident on the slope 135 is such a critical angle that the slope 135 performs a critical reflection of 45 degrees with respect to the optical axis 136.
  • the light traveling in the horizontal direction in the light guide 130 inside the microchip 129 is folded back by 90 degrees by this slope.
  • the refractive index of the silicone resin needs to be 1.45 or more in order to fold the light traveling in the horizontal direction by 90 degrees by using the critical reflection condition.
  • polydimethylsiloxane can not be used as a silicone resin.
  • the PDMS is a material capable of forming a microstructure by imprinting, and can be transferred to a submicron structure. In addition, it is colorless and transparent, has small absorption in the visible light range, and hardly shows any autofluorescence. Furthermore, they are also used, for example, in microchips for light detection used in the field of biotechnology, because they do not adversely affect cells and tissues with biocompatible materials.
  • silicone resin materials having a refractive index of 1.45 or more which have the same characteristics as PDMS, and they are expensive.
  • phenyl rubber manufactured by Shin-Etsu Silicone Co., Ltd .: KER-6000
  • KER-6000 which is an LED sealing material
  • a methyl group of a silicone resin is obtained by substituting a methyl group of a silicone resin with a phenyl group, and has a refractive index of about 1.50.
  • the addition of a phenyl group is expensive.
  • the present invention uses a silicone resin having a refractive index of less than 1.45, such as PDMS, which is mainly expensive, and is capable of folding incident light 90 degrees by critical reflection, etc. Intended to provide.
  • a first aspect of the present invention is a plate-like light guide member mainly comprising a silicone resin, comprising a light lead-out portion for guiding light to the outside, wherein the first gas light path is filled with a light path.
  • a first inclined surface forming an end of the first gas optical path portion at a first angle with respect to the first optical axis which is an optical axis of the first gas optical path portion, and a first inclined surface with respect to the first optical axis And a second slope inclined by a second angle, wherein the first angle travels the first optical axis and reaches the second slope among the first refracted light refracted by the first slope
  • the second angle is an angle at which light which is critically reflected by the second slope among the first refracted light reaching the second slope is present.
  • a second aspect of the present invention is the light guide member according to the first aspect, further comprising a second gas optical path portion whose optical path is filled with a gas, separately from the first gas optical path portion, A second slope forms an end of the second gas optical path portion, and the second angle travels a second optical axis which is an optical axis of the second gas optical path portion and is refracted by the second slope
  • the refracted light is an angle at which the light reaching the first slope exists, and the first angle is a light that is critically reflected on the first slope among the second refracted light reaching the first slope It is an existing angle.
  • a third aspect of the present invention is the light guide member according to the second aspect, wherein a light path between the first slope and the second slope is filled with PDMS, and the light path is made with respect to the first optical axis.
  • the angle ⁇ (0 ° ⁇ ⁇ ⁇ 90 °) formed by the first slope and the angle ⁇ (0 ° ⁇ ⁇ ⁇ 90 °) formed by the second slope with respect to the second optical axis are 51.0. ° ⁇ ⁇ ⁇ 55.55 ° and 51.0 ° ⁇ ⁇ ⁇ 55.55 °.
  • a fourth aspect of the present invention is the light guide member according to the third aspect, wherein 51.17 ° ⁇ ⁇ ⁇ 52.5 ° and 51.17 ° ⁇ ⁇ ⁇ 52.5 °. .
  • a fifth aspect of the present invention is the light guide member according to the third or fourth aspect, wherein the first optical axis and the second optical axis are parallel or coincide with each other, and a value of ⁇ It is equal to the value of ⁇ .
  • a sixth aspect of the present invention is the light guide member according to any one of the second to fifth aspects, wherein the first gas optical path portion, the first sloped surface, the second gas optical path portion, and the second sloped surface.
  • the (2n-1) gas optical path, the (2n-1) slope, the 2n gas optical path and the 2n slope are further provided for natural numbers n of 2 or more .
  • a seventh aspect of the present invention is a light lead-out member for guiding incident light to the outside, comprising a shape of a pyramid or a three-dimensional shape obtained by cutting a part of a pyramid, wherein the three-dimensional shape includes a side surface and a bottom surface
  • the solid shape is filled with PDMS, and the elevation angle of the side with respect to the bottom is 51.0 ° or more and 55.55 ° or less
  • An eighth aspect of the present invention is a light lead-out method using a plate-like light guide member mainly made of silicone resin, wherein the light guide member is a first gas light path whose light path is filled with gas.
  • a first inclined surface forming an end of the first gas optical path portion at a first angle with respect to the first optical axis which is an optical axis of the first gas optical path portion, and a first inclined surface with respect to the first optical axis And a second slope inclined by a second angle, wherein the first angle travels the first optical axis and reaches the second slope among the first refracted light refracted by the first slope And the second angle is an angle at which light which is critically reflected by the second slope among the first refracted light reaching the second slope is present with respect to the first slope
  • a light extraction method including an incidence step of causing light to enter along the first optical axis.
  • the incident light is refracted by the first slope and then reflected by the second slope, the condition of critical reflection is relaxed. For this reason, it becomes easy to lead out outside the light which travels in the optical axis direction inside the light guide member of the plate-like body.
  • the traveling direction of the light traveling in the two directions inside the light guide member of the plate-like member is changed without increasing the number of members as compared with the first aspect. It is possible to derive
  • an inexpensive PDMS is used as a constituent material of the light guide member to effectively function the refracting surface and the critical reflecting surface, or the traveling direction of the reflected light is the optical axis It is easy to make the direction close to 90.degree.
  • FIG. 5 shows the angle between the traveling direction of the light emitted from the image plane 137 and the optical axis 136 when the refractive index of the silicone resin which is the material of the microchip 129 in FIG. Is a diagram showing the relationship between the angle “) and the possibility of critical reflection on the slope 135.
  • FIG. 5A in the case of the viewing angle of ⁇ 2 degrees, the light is folded 90 degrees by critical reflection.
  • a viewing angle of ⁇ 3 degrees as shown in FIG. 5B, part of the light is not critically reflected and is separated from the silicone resin to the outside.
  • the viewing angle is I can not get enough.
  • the refractive index of the silicone resin is 1.5, the allowable viewing angle is ⁇ 4 degrees. That is, when the light is folded 90 degrees by using the critical reflection action as described above, the view angle can not be obtained sufficiently large, so that the light emitted from the sample in the microchip 129 may not necessarily be detected sufficiently. I will.
  • the fourth aspect of the present invention it is possible to provide a light guide member having a large viewing angle of, for example, ⁇ 9 degrees. Therefore, the amount of light to be derived is increased as compared with the case of using a light guide member with a narrow viewing angle, and it becomes easy, for example, to take a bright and clear image by an external camera. In addition, it is possible to reflect light incident along the optical axis almost at right angles. Further, it is easy to achieve both of effectively functioning the refracting surface and the critical reflecting surface and making the traveling direction of the reflected light close to 90 ° with respect to the optical axis.
  • the structure of the light lead-out portion is simple and the symmetry is high, and the production of the light lead-out portion is facilitated.
  • FIG. 6 is a diagram showing an example of the configuration of a light lead-out unit according to the first embodiment.
  • FIG. 7 is a diagram showing the relationship between the viewing angle and the possibility of critical reflection in Example 1.
  • FIG. It is a figure which shows the relationship between elevation angle and the advancing direction of reflected light. It is a figure which shows the concept which derives the light from 2 directions using the light derivation
  • FIG. It is a figure which illustrates the light derivation
  • FIG. 6 A configuration example of the light lead-out unit (an example of the “light lead-out unit” in the claims of the present application) according to the present embodiment is shown in FIG.
  • a microchip 3 an example of “light guiding member” in the claims of the present application) of a plate-like body mainly made of silicone resin is installed on the tablet terminal 1.
  • the tablet terminal 1 has a camera 5.
  • the microchip 3 includes a light guide 7, an image surface 9, and a light lead-out portion 11 (an example of a “light lead-out portion” in the claims of the present application).
  • the light lead-out portion 11 includes the gas light path portion 13 (an example of the “first gas light path portion” in the claims of the present application), the light guide hole 15, and the light lead-out member 17 (an example of the “light lead-out member” in the claims of the present application)
  • the light guide member 17 includes a surface A (an example of a “first slope” in the claims of the present application) and a surface B (an example of a “second slope” in the claims of the present application).
  • the optical axis of the light guide 7 and the optical axis 19 of the gas optical path unit 13 coincide with each other.
  • the angle formed by the surface A with the optical axis 19 is an angle ⁇ (an example of the “first angle” in the claims of the present application), and the angle formed by the surface B with the optical axis 19 is the angle ⁇ (a second disclosed in the claims of the present application (An example of “angle”) (0 ° ⁇ ⁇ ⁇ 90 °, 0 ° ⁇ ⁇ ⁇ 90 °).
  • a critical reflection surface (surface B) having an interface between the refracting surface (surface A in FIG. 6) having an interface with the air and the air is provided. That is, the light traveling horizontally in the light guide path of the silicone resin (the direction of the optical axis 19 is the horizontal direction) is once in the atmosphere (gas optical path portion) by utilizing the difference in refractive index between the atmosphere and the silicone resin. 13) and the introduced light is again introduced from the surface A into the silicone resin (light outlet member 17).
  • the refraction direction of the incident light on the refracting surface A is refracted in the vertically downward direction by adjusting the angle of the light traveling through the light guiding path of the silicone resin on the surface A with respect to the optical axis.
  • the traveling direction of light incident on the critical reflection surface (surface B) is not in the horizontal direction, and the critical reflection surface (surface B) The critical reflection condition at is relaxed. Therefore, according to this configuration, it is possible to use a silicone resin whose refractive index is less than 1.45. For example, even if PDMS resin having a refractive index of about 1.41 is used as the silicone resin forming the microchip, the light traveling in the horizontal direction of the microchip light guide path can be folded 90 degrees.
  • the maximum value of the critical reflection angle of light incident on the surface A along the optical axis at the surface B is 55.55 °.
  • the minimum value of the angle at which light which is critically reflected at right angles to the optical axis in the plane B is 51.20 °.
  • the maximum value of the critical reflection angle of light incident on the surface A along the optical axis at the surface B is 55, based on the law of refraction and the law of reflection. It will be .46 °.
  • the minimum value of the angle at which light which is critically reflected at right angles to the optical axis on the surface B is 51.17 °.
  • the elevation angle is preferably 51.17 ° or more and 55.55 ° or less.
  • FIG. 8 is a diagram showing the relationship between the elevation angle and the traveling direction of the reflected light, and the elevation angle is (a) 50.5 °, (b) 51.0 °, (c) 51.5 °, (d) 52 It is a figure which shows the advancing direction of the reflected light in the case of 0 degree, (e) 52.5 degrees, and (f) 53.0 degrees.
  • the elevation angle was changed by 0.5 ° in the range of 50.5 ° to 53 °.
  • the angle before entering the refracting surface of the incident light was changed in 1 ° steps in the range of ⁇ 13 ° with respect to the optical axis direction.
  • the elevation angle when the elevation angle is 50.5 °, the angle of the traveling direction of the reflected light with respect to the optical axis is clearly smaller than 90 °. Also, when the incident light had angles of + 13 ° and + 12 °, it did not reflect critically. Referring to FIG. 8 (b), when the elevation angle is 51.0 °, the traveling direction of the reflected light makes an angle smaller than 90 ° with respect to the optical axis. In addition, when the incident light had angles of + 13 °, + 12 ° and + 11 °, no critical reflection occurred. Referring to FIG. 8C, when the elevation angle is 51.5 °, the traveling direction of the reflected light makes an angle close to 90 ° with the optical axis.
  • the elevation angle be 51.0 ° or more and 52.5 ° or less from the viewpoint that the traveling direction of the reflected light is a direction close to 90 ° with respect to the optical axis.
  • the elevation angle is It is more preferable that the angle is 51.0 ° or more and 55.55 ° or less. Furthermore, in order for the refracting surface (surface A) and the critical reflecting surface (surface B) to function effectively and the traveling direction of the reflected light is a direction close to 90 ° with respect to the optical axis, the elevation angle is 51 It is more preferable that the angle is not less than 17 ° and not more than 52.5 °.
  • the structure of the light guide member 17 according to the first embodiment is improved, and a light guide member capable of guiding light in a plurality of directions will be described.
  • the elevation angles of the refracting surface (surface A) and the critical reflecting surface (surface B) are equal in FIG. 6, the light traveling in the horizontal direction through the gas optical path 13 inside the microchip 3 (optical axis is horizontal) Is incident from the side of surface B, the surface B of FIG. 6 functions as a refracting surface, and the surface A functions as a critical reflecting surface. Therefore, it is possible to fold the light incident from the side of the surface B in the horizontal direction by 90 degrees as well.
  • FIG. 9 (a) it is a microchip made of PDMS resin, and the light guiding portion has two slopes having an interface with the atmosphere as the first slope 21 (the “first slope in the claims of the present invention And the second slope 23 (an example of the “second slope” in the claims of the present application), and the elevation angle ⁇ of the first slope 21 (an example of the “first angle” in the claims of the present application) and the second slope
  • the elevation angle ⁇ is set to 51.5 °, and the first slope 21 and the second slope 23 intersect.
  • the first light is an optical axis in the first gas optical path portion from the first image plane 9 1 is a light path of light incident on the first inclined surface 21 (an example of “first gas optical path portion” in the present claims) axis (the application examples of the "first optical axis” in the claims), "the second gas in the second gas optical path portion (the claims from the second image plane 9 2 is a light path of light incident on the second slope
  • the second optical axis (an example of the “second optical axis” in the claims of the present application), which is an optical axis in the “optical path portion”, coincides with the second optical axis.
  • elevation ⁇ the second inclined surface of the first refracted light 27 is refracted by the first inclined surface 21 from the image plane 9 1 proceeds the first optical axis (an example of "first refracted light” in the present claims) The angle at which light reaching 23 is present.
  • the elevation angle ⁇ is an angle at which the light which is critically reflected by the second slope 23 out of the first refracted light 27 reaching the second slope 23 is present.
  • the elevation angle ⁇ is first in the second refracted light 33 refracted by the second inclined surface 23 from the image plane 9 2 proceeds the second optical axis (an example of "second refracted light” in the present claims) It is an angle at which light reaching the slope 21 is present.
  • the elevation angle ⁇ is an angle at which the light that is critically reflected by the first slope 21 out of the second refracted light 33 that reaches the first slope 21 is present.
  • the first refracted light 27 of the first incident light 25 (first optical axis 19 1 : horizontal direction) incident from the horizontal direction to the first slope 21 through the atmosphere is critically reflected by the second slope 23. It becomes the first reflected light 29 folded back 90 degrees.
  • the second refracted light 33 of the second incident light 31 (second optical axis 19 2 : horizontal direction) in which the light traveling in the horizontal direction through the atmosphere enters the second inclined surface 23 is the first inclined surface 21.
  • the critical reflection results in the first reflected light 35 folded back 90 degrees.
  • each detection light for example, fluorescence
  • the first image plane 9 1 it is possible to carry out (an example of the "light derivation method" in the present claims) image 39 1 and the optical derivation method for obtaining both an image 39 2 from the second image plane 9 2 from.
  • two pairs of gas optical path sections and slopes have the same elevation angle (51.5 degrees), and refracted light of the light from the horizontal direction incident on one surface is critically reflected by the other surface. If provided and the structure of the light lead-out portion is a structure having four inclined surfaces, light from four directions can be projected onto the camera, as shown in FIG.
  • a pair of gas optical path portions and slopes having the same elevation angle (51.5 degrees) (the (2n-1) gas optical path portion, the (2n-1) slope, the 2n n gas optical path portion in the claims)
  • the structure of the light lead-out member 41 of FIG. 10 it is possible to obtain images 45 1 to 45 4 from the direction facing the slopes 43 1 to 43 4 .
  • the structure of the light leading member 47 in FIG. 11 it is possible to obtain an image 51 1-51 8 from a direction facing the inclined surface 49 1-49 8.
  • the three-dimensional shape having 2n side surfaces may be a cone (an example of the “shape of a cone” in the claims of the present application) as illustrated in FIG. 10, or a cone as illustrated in FIG. It may be a solid whose part including the apex is cut off from the body (an example of “a solid shape whose part of a cone is cut off” in the claims of this application).
  • a plurality of measurement lights are guided to one camera with a simple structure without adopting a complex optical system used in the panoramic imaging device described in Patent Document 2. It becomes possible to implement the light derivation method (an example of the “light derivation method” in the claims of the present application).
  • the first optical axis and the second optical axis may be parallel without being coincident with each other.

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Abstract

L'invention concerne un élément guide de lumière et similaire, dans lequel une résine de silicone, telle que polydiméthylsiloxane (PDMS) et similaire, dont le coût est peu élevé et dont l'indice de réfraction est inférieur à 1,45 est utilisée en tant que matériau constituant principal, et lequel permet qu'un rayon incident soit renvoyé à 90 degrés par réflexion critique. Plus spécifiquement, cet élément guide optique de lumière est constitué principalement d'une résine de silicone, est sous forme de plaque et comporte une partie d'émission de lumière destinée à émettre la lumière vers l'extérieur. Cet élément guide optique comporte en outre: une première partie de chemin optique dans laquelle un chemin optique est rempli de gaz; une première surface inclinée, laquelle surface est inclinée selon un premier angle par rapport à un premier axe optique, lequel est l'axe optique de la première partie de chemin optique et lequel forme l'extrémité de cette première partie de chemin optique; une deuxième surface inclinée, laquelle surface est inclinée selon un deuxième angle par rapport au premier axe optique. Le premier angle est un angle dans lequel une lumière réfléchie a parcouru un trajet le long du premier axe optique et a été réfléchie par la première surface inclinée, cette lumière contenant une lumière qui a atteint la deuxième surface. Le deuxième angle est un angle dans lequel la première lumière réfléchie qui atteint la seconde surface inclinée contient une lumière soumise à réflexion critique par la deuxième surface inclinée.
PCT/JP2016/067579 2015-07-03 2016-06-13 Élément guide de lumière, élément d'émission de lumière et procédé d'émission de lumière WO2017006710A1 (fr)

Applications Claiming Priority (2)

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JP2015-134802 2015-07-03
JP2015134802A JP6507891B2 (ja) 2015-07-03 2015-07-03 導光部材、光導出部材及び光導出方法

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WO2017006710A1 true WO2017006710A1 (fr) 2017-01-12

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