WO2016120973A1 - Light source device, and lighting equipment and automotive lamp using same - Google Patents

Light source device, and lighting equipment and automotive lamp using same Download PDF

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Publication number
WO2016120973A1
WO2016120973A1 PCT/JP2015/052039 JP2015052039W WO2016120973A1 WO 2016120973 A1 WO2016120973 A1 WO 2016120973A1 JP 2015052039 W JP2015052039 W JP 2015052039W WO 2016120973 A1 WO2016120973 A1 WO 2016120973A1
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WO
WIPO (PCT)
Prior art keywords
light
light source
texture
source device
different
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PCT/JP2015/052039
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French (fr)
Japanese (ja)
Inventor
杉山 寿紀
啓之 梶川
勝博 岸上
平田 浩二
Original Assignee
日立マクセル株式会社
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Priority to PCT/JP2015/052039 priority Critical patent/WO2016120973A1/en
Publication of WO2016120973A1 publication Critical patent/WO2016120973A1/en

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/10Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/13Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
    • F21S43/16Light sources where the light is generated by photoluminescent material spaced from a primary light generating element
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S2/00Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/10Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/13Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
    • F21S43/14Light emitting diodes [LED]
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235Light guides
    • F21S43/236Light guides characterised by the shape of the light guide
    • F21S43/239Light guides characterised by the shape of the light guide plate-shaped

Definitions

  • the present invention relates to a light source device that can be used as a linear or planar light source, and in particular, a light source device that can be suitably used as a lighting fixture (ceiling light) attached to a ceiling, and further as a vehicular lamp in a moving body such as an automobile.
  • a lighting fixture ceiling light
  • vehicular lamp in a moving body such as an automobile.
  • a light source device such as a vehicular lamp
  • light from a solid light source is incident on a light guide made of a transparent member, and the light is scattered by the uneven shape formed on the surface of the light guide.
  • a configuration for extracting light is known.
  • Patent Documents 1 and 2 by making the uneven shape formed on the light guide into a fine pattern, the light and dark patterns caused by the individual patterns are made invisible, and the appearance and appearance of the light source device are improved. ing.
  • the appearance of the light source device on the limited evaluation criteria is improved by making the configuration in which the bright and dark patterns caused by the individual fine patterns are not visible, the light emission distribution becomes planar and expanded. Appearance improvements in the evaluation criteria are limited.
  • an object of the present invention is to provide a light source device that can be manufactured at a low cost, has a high taste, and has a high-class feeling, and a lighting fixture and a vehicle lamp using the light source device.
  • the present invention is a light source device including a solid light source and a light guide that emits light emitted from the solid light source to the outside, wherein the light guide includes at least a first surface that emits light and a first surface.
  • the first surface and the second surface have a periodic first texture and a second texture with different pitches formed on the first surface and the second surface, respectively.
  • the moiré pattern is generated in the light emitted from the first surface of the light guide by the interference between the light density produced by the first texture and the light density produced by the second texture.
  • the present invention it is possible to provide an excellent light source device that can be manufactured at a low cost and can be applied to high-quality lighting fixtures and vehicular lamps.
  • FIG. 1 is a cross-sectional configuration diagram illustrating a light source device 10 according to Embodiment 1.
  • FIG. 1 is a perspective view of a light guide body 11 according to Embodiment 1.
  • FIG. The figure which shows the detailed shape of the texture 15.
  • FIG. The figure which shows the detailed shape of the texture 16.
  • FIG. The perspective view which shows the structure of the solid light source 80.
  • FIG. FIG. 3 is a diagram for explaining a mechanism of moiré pattern generation in the first embodiment.
  • FIG. 6 is a cross-sectional configuration diagram illustrating a light source device 20 according to a second embodiment.
  • FIG. 6 is a perspective view of a light guide body 21 according to a second embodiment.
  • FIG. 10 is a diagram illustrating a schematic shape and a moire pattern of textures 35 and 36 according to the third embodiment.
  • FIG. 10 is a diagram illustrating a schematic shape and a moire pattern of textures 45 and 46 according to the fourth embodiment.
  • FIG. 10 is a perspective view illustrating an appearance of a ceiling light 50 according to a fifth embodiment.
  • FIG. 3 is a perspective cross-sectional view showing the structure of a planar light guide 51. The figure which shows the example of the outline shape of the texture used for the planar light guide.
  • FIG. 1 is a cross-sectional configuration diagram showing a first embodiment of a light source device according to the present invention.
  • the light source device 10 propagates the light generated from the solid light source 80 to the light guide 11 and emits the light from the light emitting unit 13 to the outside (upward in the drawing).
  • a light emitting side (upper surface side) of the light emitting unit 13 is denoted by 13a, and a substantially parallel facing surface (lower surface side) is denoted by 13b.
  • the solid light source 80 is mounted on the substrate 60, and is fixed to the support body 61 by the fixtures 63 and 64 and screws 65 and 66 together with the light guide 11.
  • a reflective film 62 is formed on the surface of the support 61 that faces the light emitting portion 13.
  • the reflective film 62 may be formed on the facing surface 13 b of the light emitting unit 13.
  • FIG. 2A and 2B are perspective views of the light guide 11 constituting the light source device 10, wherein FIG. 2A is a view seen from the light emitting side 13a, and FIG. 2B is a view seen from the facing surface side 13b.
  • the light guide 11 made of a transparent material has an introduction light part 12 that introduces light from the solid light source 80 and a light emitting part 13 that emits light to the outside.
  • the light emitting unit 13 is a rod having a square cross section, thereby realizing a light source device that emits light in a linear shape.
  • the introduction light portion 12 is formed with a substantially frustoconical concave groove as the light receiving portion 14 into which the fixed light source 80 is fitted.
  • the textures 15 and 16 interfere with each other in the shades of light generated by the respective textures, and a moiré pattern is generated in the outgoing light emitted from the light emitting unit 13.
  • FIG. 3 is a diagram showing the schematic shapes (B) and (C) and the moire pattern (A) of the textures 15 and 16 formed on the light emitting unit 13.
  • 4 shows the detailed shape of the texture 15
  • FIG. 5 shows the detailed shape of the texture 16 (both are a perspective view (A) and a sectional view (B)).
  • the detailed shape is a prism concave shape having a depth D 1 and angles ⁇ 1 and ⁇ 2 .
  • the depth D 1 is 0.03 to 0.1 mm, and has a shape that gradually increases from the introduction light portion 12 toward the end portion. With this configuration, the light emission intensity from the light emitting unit 13 is made uniform at the position in the propagation direction.
  • the angle ⁇ 1 is preferably 20 to 45 degrees, and ⁇ 2 is preferably 45 to 70 degrees.
  • the surface facing 13b of the light emitting portion 13 are formed at a pitch P 1 of the groove which is bent at the central portion as a texture 16.
  • the detailed shape is such that the central portion is shifted by P 1/2 with respect to the groove end portion, and the cross section has a prism concave shape with depth D 2 and angles ⁇ 3 and ⁇ 4 .
  • the depth D 2 is a 0.03 ⁇ 0.1 mm, and progressively deeper becomes shaped towards the end of the introduction the optical unit 12. With this configuration, the light emission intensity from the light emitting unit 13 is made uniform at the position in the propagation direction.
  • the angle ⁇ 3 is preferably 50 to 70 degrees, and ⁇ 4 is preferably 20 to 45 degrees.
  • FIG. 6 is a perspective view showing the configuration of the solid light source 80.
  • an LED chip 81 which is a light-emitting element, is mounted on a substrate 60, and a resin cap 83 that improves the light emission distribution characteristics of the LED light source is formed on the outside thereof.
  • a phosphor layer 82 that absorbs light from the LED chip 81 and emits fluorescence may be formed outside the LED chip 81 for the purpose of changing the emission spectrum characteristics of the solid light source 80 as necessary.
  • FIG. 7 is a diagram for explaining the mechanism of moiré pattern generation in this embodiment.
  • (A) and (B) show a moire pattern
  • (C) shows a ray diagram in the light guide.
  • the light from the solid light source 80 enters the light emitting unit 13 of the light guide 11 from the left side and propagates through the light emitting unit 13 while being reflected by the upper and lower wall surfaces of the light emitting unit 13 a plurality of times. A part of the light is diffracted by the textures 15 and 16, and the incident angle of the light beam becomes less than the critical angle with respect to the light emitting unit wall surface and is emitted to the outside of the light emitting unit 13.
  • the light beam emitted from the facing surface 13 b is reflected by the reflective film 62 of the support 61 and returns into the light emitting unit 13.
  • the angle of the texture 16 on the facing surface 13b side shown in FIG. 5 is set to ⁇ 3 > ⁇ 4 and ⁇ 3 ⁇ 50 degrees, so that the light reflected by the texture 16 (shown by a broken line) Becomes the outgoing light 91 toward the left side of the light emitting unit 13 with a high probability, and the light reflected by the portion other than the texture 16 (shown by a solid line) is an outgoing light 92 toward the right side of the light emitting unit 13 with a high probability. It was confirmed that
  • the light 91 emitted to the left from the light emitting unit 13 is reflected by the texture 16 of the opposing surface 13b and then passes through the texture 15 of the emission surface 13a or between them, as shown in FIG.
  • the contrast of the moire pattern 17a resulting from the textures 15 and 16 is increased.
  • the relationship between the pitches P 0 and P 1 of the textures 15 and 16 is P 0 > P 1 .
  • the observer (95 in the figure) approaches the light emitting unit 13 from the left side of the light emitting unit 13, the texture 16 farther from the observer 95 appears to move to the left side relative to the texture 15, and therefore a moire pattern.
  • 17a moves in the direction of the arrow shown in FIG. Therefore, the direction of the arrow seen in the moire pattern 17a matches the moving direction of the moire pattern 17a.
  • the moire pattern 17a moves greatly only by slightly shifting the relative position of the observer 95 with respect to the light emitting unit 13. Specifically, the moire pattern 17a moves by one period only when the relative positions of the textures 15 and 16 are shifted by one pitch of the texture.
  • the texture 16 closer to the observer 96 appears to move to the right side relative to the texture 15.
  • the moire pattern 17b moves in the direction of the arrow shown in FIG. Accordingly, the direction of the arrow visible in the moire pattern 17b and the moving direction of the moire pattern 17b are reversed.
  • the contrast of the moire pattern 17b that can be observed from the right side is small.
  • the values of the pitches P 0 and P 1 of the textures 15 and 16 are preferably 2 mm or less because it is preferable that the individual textures are difficult to distinguish. However, if the pitches P 0 and P 1 are too small, it is difficult to ensure the texture processing accuracy and the processing cost increases.
  • the relationship between the pitches P 0 and P 1 of the textures 15 and 16 is P 0 ⁇ P 1 , more preferably (19/20) P 1 ⁇ P 0 ⁇ (79/80) P 1. Also good. Thereby, the moving direction of the moire pattern with respect to the line-of-sight movement can be reversed.
  • the magnitude relationship between P 0 and P 1 may be appropriately determined according to the groove shape of the textures 15 and 16 and the moving direction of the target moire pattern.
  • the configuration of the first embodiment it is possible to control the moving direction of the high-contrast moire pattern included in the emitted light in a specific direction with respect to the movement of the observer, and a high added-value light source device can be realized. Since this light source device can control the direction of movement of the light emission pattern to a specific direction, it is effective to apply to, for example, a direction indicator lamp for a vehicle whose light source color is yellow.
  • FIG. 8 is a cross-sectional configuration diagram showing a second embodiment of the light source device according to the present invention.
  • the light source device 20 propagates the light generated from the two solid light sources 80a and 80b disposed at both ends of the light guide 21 to the light guide 21 and emits the light from the light emitting unit 23 to the outside (upward in the drawing). is there.
  • the light emitting side of the light emitting unit 23 is indicated by 23a, and the opposite surface is indicated by 23b.
  • the two solid light sources 80a and 80b are mounted on the substrates 70a and 70b, respectively, and are fixed to the support 71 together with the light guide 21 by fixtures 73a and 73b and screws 75a and 75b.
  • a reflective film 72 is formed on the surface of the support 71 facing the light emitting portion 23.
  • the reflective film 72 may be formed on the facing surface 23 b of the light emitting unit 23.
  • FIG. 9A and 9B are perspective views of the light guide 21 that constitutes the light source device 20, in which FIG. 9A is a view seen from the light emitting side 23a, and FIG. 9B is a view seen from the facing surface side 23b.
  • the light guide 21 made of a transparent material has introduction light portions 22a and 22b that introduce light from the solid light sources 80a and 80b at both ends, and a light emitting portion 23 that emits light to the outside at the center.
  • the light emitting unit 23 is a rod having a square cross section, thereby realizing a light source that emits light in a linear shape.
  • the introduction light portions 22a and 22b are formed with substantially frustoconical concave grooves as light receiving portions 24a and 24b for fitting the fixed light sources 80a and 80b.
  • a texture 25 having a substantially prism concave shape and a period of pitch P 0 is formed on the light emitting side 23 a of the light emitting portion 23, and a substantially prism concave shape having a pitch P on the facing surface 23 b of the light emitting portion 23.
  • a texture 26 having a period of 1 is formed. Due to the textures 25 and 26, the outgoing light emitted from the light emitting unit 23 is interfered to generate a moire pattern.
  • FIG. 10 is a diagram showing a schematic shape (B), (C) and a moire pattern (A) of the textures 25, 26 formed on the light emitting unit 23. Further, FIG. 11 shows a detailed shape of the texture 25, and FIG. 12 shows a detailed shape of the texture 26 (both are a perspective view (A) and a sectional view (B)).
  • the detailed shape is a prism concave shape having a depth D 1 and angles ⁇ 1 and ⁇ 2 .
  • the depth D 1 is 0.03 to 0.1 mm, and the angles ⁇ 1 and ⁇ 2 are set to ⁇ 1 ⁇ 2, and each angle is preferably 30 to 60 degrees.
  • a groove bent at the central portion is formed as the texture 26 on the opposite surface side 23b of the light emitting portion 23.
  • the pitch is on the left side of the central portion in the propagation direction. Is P 1 (texture 26a), and the right side is P 2 (texture 26b).
  • the detailed shape of the bent groove is such that the center portion is cysted with respect to the end portion by a half of the respective pitches P 1 and P 2 .
  • the cross section of the groove is a prism concave shape with a depth D 2 and angles ⁇ 3 and ⁇ 4 , the depth D 2 is 0.03 to 0.1 mm, and the angles ⁇ 3 and ⁇ 4 are ⁇ 3 ⁇ 4 Each angle is preferably 30 to 60 degrees.
  • the relationship between the pitch P 0 of the texture 25 and the pitches P 1 and P 2 of the texture 26 is P 1 ⁇ P 0 ⁇ P 2 , more preferably (14/15) P 0 ⁇ P 1 ⁇ (59/60) P 0. And (14/13) P 0 ⁇ P 2 ⁇ (51/50) P 0 .
  • the values of the pitches P 0 , P 1 , P 2 of the textures 25 and 26 are preferably 2 mm or less because it is preferable that the individual textures are difficult to distinguish. However, if the pitches P 0 , P 1 , and P 2 are too small, it becomes difficult to ensure the texture processing accuracy and the processing cost increases.
  • FIG. 13 is a diagram for explaining the mechanism of moiré pattern generation in this embodiment.
  • (A) and (B) show a moire pattern
  • (C) shows a ray diagram in the light guide.
  • the light from the solid light source 80a is incident on the light emitting unit 23 of the light guide 21 and the light from the solid light source 80b is incident from the right side.
  • (C) only the light rays entering from the left side are shown, but the light rays entering from the right side are also almost symmetrical.
  • These incident light beams propagate through the light emitting unit 23 while being reflected by the upper and lower wall surfaces of the light emitting unit 23 a plurality of times. A part of the light is diffracted by the textures 25 and 26, and the incident angle of the light beam becomes a critical angle or less with respect to the light emitting unit wall surface and is emitted to the outside of the light emitting unit 23.
  • the light beam emitted from the facing surface 23 b is reflected by the reflective film 72 of the support 71 and returns into the light emitting unit 23.
  • the light (shown by a broken line) reflected by the texture 26 provided on the facing surface 23 b of the light emitting unit 23 is emitted with a probability substantially equal to the left and right direction of the light emitting unit 23.
  • light reflected by a portion other than the texture 26 (shown by a solid line) is also emitted with a substantially equal probability in the left-right direction of the light emitting unit 23.
  • the intensity of the emitted light 93 emitted to the left of the light emitting unit 23 and the intensity of the emitted light 94 emitted to the right become substantially equal.
  • the contrast of the moire pattern 27a observed from the left observer 95 and the moire pattern 27b observed from the right observer 96 with respect to the light emitting unit 23. are equal.
  • the relationship between the pitches P 0 , P 1 , and P 2 of the textures 25 and 26 is P 1 ⁇ P 0 ⁇ P 2 .
  • the texture 26 farther from the observer 95 appears to move to the left relative to the texture 25.
  • the moire pattern 27a is centered as shown in FIG. 13 (A) by switching the magnitude relationship of the pitches P 1 and P 2 of the texture 26 with respect to the pitch P 0 of the texture 25 at a substantially intermediate portion of the light emitting unit 23. Looks like it springs from.
  • the moire pattern 27a moves greatly only by slightly shifting the relative position of the observer 95 with respect to the light emitting unit 23. Specifically, the moire pattern 27a moves by one period only when the relative positions of the textures 25 and 26 are shifted by one pitch of the texture.
  • the configuration of the second embodiment it is possible to realize a light source device capable of observing a change in the moire pattern over a wide range with respect to slight movement of the observer.
  • the observer can be alerted, and therefore, for example, the light source color is red, and application to a vehicle brake lamp or the like is effective.
  • FIG. 14 shows, as a third embodiment of the light source device according to the present invention, the schematic shapes (B) and (C) and the moire pattern (A) of the textures 35 and 36 formed on the light emitting portion 33 of the light guide 31.
  • FIG. The overall configuration of the light source device 30 and the light guide 31 is the same as that of the light source device 10 or 20 and the light guide 11 or 21 described above.
  • linear grooves are formed at the pitch P 0 as the texture 35 on the light emitting side 33a.
  • the facing side 33b as contrast (C), as a texture 36, are formed by dividing the linear grooves of pitch P 1 3 one region 36a, 36b, to 36c. The position of the groove in each region is shifted by (1/3) P 1.
  • the relationship between the pitches P 0 and P 1 of the textures 35 and 36 is P 1 ⁇ P 0 , more preferably (19/20) P 0 ⁇ P 1 ⁇ (79/80) P 0 .
  • P 1 ⁇ P 0 more preferably (19/20) P 0 ⁇ P 1 ⁇ (79/80) P 0 .
  • the moiré pattern 37 moves greatly only when the relative position of the observer with respect to the light emitting portion is slightly shifted. Specifically, the moire pattern 37 moves by one period in the three-divided region only by shifting the relative positions of the textures 35 and 36 by one pitch of the texture.
  • the relationship between the pitches P 0 and P 1 of the textures 35 and 36 is P 1 > P 0 , more preferably (19/20) P 1 ⁇ P 0 ⁇ (79/80) P 1. Also good. Thereby, the moving direction of the moire pattern with respect to the line-of-sight movement can be reversed.
  • a moire pattern is variously changed with slight movement of an observer, and a high-quality light source device can be realized.
  • This light source device can be effectively applied to, for example, indoor and outdoor lighting fixtures and interior lighting lamps.
  • FIG. 15 shows schematic shapes (B), (C) and moire patterns (A) of the textures 45, 46 formed on the light emitting portion 43 of the light guide 41 as a fourth embodiment of the light source device according to the invention.
  • FIG. The overall configuration of the light source device 40 and the light guide 41 is the same as that of the light source device 10 or 20 and the light guide 11 or 21 described above.
  • linear grooves are formed at the pitch P 0 as the texture 45 on the light emitting side 43a.
  • the opposing side 43b as the other hand (C) is as a texture 46, to form a curved groove at a pitch P 1.
  • the curved groove is a cubic curve shape having a center position in the width direction (vertical direction) of the light emitting portion 43 as a starting point or a quadratic curve shape whose polarity is reversed at the center portion. respectively ⁇ (1/2) is only P 1 cysts in the longitudinal direction (lateral direction) Te.
  • the relationship between the pitches P 0 and P 1 of the textures 45 and 46 is P 1 ⁇ P 0 , more preferably (19/20) P 0 ⁇ P 1 ⁇ (79/80) P 0 .
  • the formation width of the texture 46 on the facing surface side 43b is narrower than the formation width of the texture 45 on the light emission side 43a.
  • the moiré pattern 47 moves greatly only when the relative position of the observer with respect to the light emitting portion is slightly shifted. Further, since the moire pattern 47 looks like a cylindrical side as shown in FIG. 15A, the light emitting portion looks like a pseudo three-dimensional shape.
  • a moire pattern that appears in a pseudo three-dimensional shape with respect to slight movement of an observer appears, and a light source device with a sense of depth can be realized.
  • This light source device can be effectively applied to, for example, indoor and outdoor lighting fixtures and interior lighting lamps.
  • a linear light source device having a linear light guide has been described, but in this embodiment, a planar light source device (planar lighting fixture) having a planar light guide is described. To do.
  • FIG. 16 is a perspective view showing an appearance of a ceiling light 50 as a planar lighting fixture.
  • the ceiling light 50 includes a disk-shaped light guide 51 that generates illumination light, a cover 57 that supports the light guide 51, a solid light source, a substrate, a reflector installed on the back surface of the light guide, and the like (all of them). (Not shown) and is attached to the ceiling or wall surface.
  • a plurality of textures 55 are formed on the surface of the light guide 51.
  • FIG. 17A and 17B are perspective sectional views showing the structure of the planar light guide 51.
  • FIG. 17A is a view of the light guide 51 viewed from the back side (ceiling side), and FIG. It is the figure seen from the side (back side).
  • the disk-shaped light guide 51 includes an annular light introducing portion 52 and a planar light emitting portion 53.
  • a plurality of concave light receiving parts 54 are installed on the circumference, and a plurality of solid light sources (not shown) are fitted therein.
  • the shape of the solid light source is the same as that shown in FIG.
  • a plurality of textures 55 are formed on the light emitting side of the light emitting portion 53, and a texture 56 is formed on the back side facing it.
  • the shapes (groove shapes) of the textures 55 and 56 the shape of each texture shown in the above embodiment is appropriately selected and adopted.
  • FIG. 18 is a diagram showing an example of the contour shape of the texture used for the planar light guide.
  • (A) is the outline shape of the texture 55 used for the output side of the light guide 51 shown in FIGS. 16 and 17.
  • the contour shape can be various other patterns, such as a radial geometric pattern as shown in (B), a petal pattern as shown in (C), or a character or logo pattern as shown in (D).
  • the moire pattern of the illumination light changes greatly with a slight change in the viewing angle. Therefore, even if there is no flashing mechanism, the viewer can be alerted and can be effectively applied not only to highly-intended indoor lighting but also as a logo mark display or indicator lamp.

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  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Planar Illumination Modules (AREA)

Abstract

This light source device (10) is provided with an a solid-state light source (80) and a light guide (11) which externally emits light emitted from the solid-state light source. The light guide (11) comprises at least a first surface (13a) which emits light and a second surface (13b) which is opposite to and approximately parallel with the first surface, and a periodic first texture (15) and second texture (16), each having a different pitch, are formed on the first surface (13a) and the second surface (13b). The light and dark pattern of light generated by the first texture (15) and the light and dark pattern of light generated by the second texture (16) interfere to produce a moiré pattern (17) in the light emitted from the first surface (13a) of the light guide (11).

Description

光源装置及びそれを利用した照明器具と車両用灯具LIGHT SOURCE DEVICE AND LIGHTING EQUIPMENT USING THE SAME AND VEHICLE LIGHT
 本発明は、線状もしくは面状の光源として利用可能な光源装置に関し、特に、天井に取り付ける照明器具(シーリングライト)、更には自動車等の移動体における車両用灯具として好適に利用可能な光源装置に関する。 The present invention relates to a light source device that can be used as a linear or planar light source, and in particular, a light source device that can be suitably used as a lighting fixture (ceiling light) attached to a ceiling, and further as a vehicular lamp in a moving body such as an automobile. About.
 車両用灯具などの光源装置として、固体光源からの光を透明部材からなる導光体に入射させ、前記光を導光体表面に形成された凹凸形状により散乱させることにより、導光体からの光を取り出す構成が知られている。例えば、特許文献1、2では、導光体に形成する凹凸形状を微細なパターンにすることにより、個々のパターンに起因する明暗模様を見えなくし、光源装置の見た目の質感や見栄えの向上を図っている。 As a light source device such as a vehicular lamp, light from a solid light source is incident on a light guide made of a transparent member, and the light is scattered by the uneven shape formed on the surface of the light guide. A configuration for extracting light is known. For example, in Patent Documents 1 and 2, by making the uneven shape formed on the light guide into a fine pattern, the light and dark patterns caused by the individual patterns are made invisible, and the appearance and appearance of the light source device are improved. ing.
特開2014-29819号公報JP 2014-29819 A 特開2013-143307号公報JP 2013-143307 A
 しかしならが、個々の微細パターンに起因する明暗模様が見えない構成にすることにより、限定した評価基準上での光源装置の見栄えは向上するが、発光分布が平面的になってしまい、拡張した評価基準における見栄え向上は制限される。 However, although the appearance of the light source device on the limited evaluation criteria is improved by making the configuration in which the bright and dark patterns caused by the individual fine patterns are not visible, the light emission distribution becomes planar and expanded. Appearance improvements in the evaluation criteria are limited.
 また、近年においては、従来製品との差別化を図るため、発光分布が平面的ではなく、より趣向性が高く高級感がある発光特性を有する照明器具や灯具が要求されている。 In recent years, in order to differentiate from conventional products, there is a demand for lighting fixtures and lamps that have a light emission characteristic that is not flat and has a more attractive and high-quality light emission distribution.
 本発明の目的は、上述した課題に鑑み、低コストで製造可能、かつ趣向性が高く高級感のある光源装置、及びこれを利用した照明器具や車両用灯具を提供することにある。 In view of the above-described problems, an object of the present invention is to provide a light source device that can be manufactured at a low cost, has a high taste, and has a high-class feeling, and a lighting fixture and a vehicle lamp using the light source device.
 本発明は、固体光源と、固体光源から出射された光を外部に出射する導光体とを備えた光源装置であって、導光体は、少なくとも光を出射する第1の面および第1の面に対向して略平行な第2の面を有し、第1の面および第2の面には、それぞれピッチの異なる周期状の第1のテクスチャーおよび第2のテクスチャーが形成されており、第1のテクスチャーにより生じる光の濃淡と第2のテクスチャーにより生じる光の濃淡の干渉により、導光体の第1の面から出射する光にモアレ模様を発生させる構成とする。 The present invention is a light source device including a solid light source and a light guide that emits light emitted from the solid light source to the outside, wherein the light guide includes at least a first surface that emits light and a first surface. The first surface and the second surface have a periodic first texture and a second texture with different pitches formed on the first surface and the second surface, respectively. The moiré pattern is generated in the light emitted from the first surface of the light guide by the interference between the light density produced by the first texture and the light density produced by the second texture.
 本発明によれば、低コストで製造可能、かつ高級感のある照明器具や車両用灯具に適用可能な優れた光源装置を提供できる。 According to the present invention, it is possible to provide an excellent light source device that can be manufactured at a low cost and can be applied to high-quality lighting fixtures and vehicular lamps.
実施例1に係る光源装置10を示す断面構成図。1 is a cross-sectional configuration diagram illustrating a light source device 10 according to Embodiment 1. FIG. 実施例1に係る導光体11の斜視図。1 is a perspective view of a light guide body 11 according to Embodiment 1. FIG. テクスチャー15,16の概略形状とモアレパターンを示す図。The figure which shows the schematic shape and the moire pattern of the textures 15 and 16. FIG. テクスチャー15の詳細形状を示す図。The figure which shows the detailed shape of the texture 15. FIG. テクスチャー16の詳細形状を示す図。The figure which shows the detailed shape of the texture 16. FIG. 固体光源80の構成を示す斜視図。The perspective view which shows the structure of the solid light source 80. FIG. 実施例1におけるモアレ模様発生のメカニズムを説明する図。FIG. 3 is a diagram for explaining a mechanism of moiré pattern generation in the first embodiment. 実施例2に係る光源装置20を示す断面構成図。FIG. 6 is a cross-sectional configuration diagram illustrating a light source device 20 according to a second embodiment. 実施例2に係る導光体21の斜視図。FIG. 6 is a perspective view of a light guide body 21 according to a second embodiment. テクスチャー25,26の概略形状とモアレパターンを示す図。The figure which shows the schematic shape and the moire pattern of the texture 25,26. テクスチャー25の詳細形状を示す図。The figure which shows the detailed shape of the texture 25. FIG. テクスチャー26の詳細形状を示す図。The figure which shows the detailed shape of the texture 26. FIG. 実施例2におけるモアレ模様発生のメカニズムを説明する図。FIG. 6 is a diagram for explaining a mechanism of moire pattern generation in the second embodiment. 実施例3に係るテクスチャー35,36の概略形状とモアレパターンを示す図。FIG. 10 is a diagram illustrating a schematic shape and a moire pattern of textures 35 and 36 according to the third embodiment. 実施例4に係るテクスチャー45,46の概略形状とモアレパターンを示す図。FIG. 10 is a diagram illustrating a schematic shape and a moire pattern of textures 45 and 46 according to the fourth embodiment. 実施例5に係るシーリングライト50の外観を示す斜視図。FIG. 10 is a perspective view illustrating an appearance of a ceiling light 50 according to a fifth embodiment. 面状導光体51の構造を示す斜視断面図。FIG. 3 is a perspective cross-sectional view showing the structure of a planar light guide 51. 面状導光体51に用いるテクスチャーの輪郭形状の例を示す図。The figure which shows the example of the outline shape of the texture used for the planar light guide.
 以下、本発明の実施の形態について、図面を参照しながら詳細に説明する。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
 図1は、本発明に係る光源装置の第1の実施例を示す断面構成図である。光源装置10は、固体光源80から発生された光を導光体11に伝搬させ、発光部13から外部(図面上方向)に出射させるものである。発光部13の光出射側(上面側)を13a、これに対向して略平行な対向面(下面側)を13bで示す。固体光源80は基板60に搭載され、導光体11とともに、固定具63,64やネジ65,66によって支持体61に固定されている。支持体61の発光部13に対向する面には反射膜62を形成している。なお、反射膜62は発光部13の対向面13bに形成しても良い。 FIG. 1 is a cross-sectional configuration diagram showing a first embodiment of a light source device according to the present invention. The light source device 10 propagates the light generated from the solid light source 80 to the light guide 11 and emits the light from the light emitting unit 13 to the outside (upward in the drawing). A light emitting side (upper surface side) of the light emitting unit 13 is denoted by 13a, and a substantially parallel facing surface (lower surface side) is denoted by 13b. The solid light source 80 is mounted on the substrate 60, and is fixed to the support body 61 by the fixtures 63 and 64 and screws 65 and 66 together with the light guide 11. A reflective film 62 is formed on the surface of the support 61 that faces the light emitting portion 13. The reflective film 62 may be formed on the facing surface 13 b of the light emitting unit 13.
 図2は、光源装置10を構成する導光体11の斜視図であり、(A)は光出射側13aから見た図、(B)は対向面側13bから見た図である。透明材料からなる導光体11は、固体光源80からの光を導入する導入光部12と、外部に光を出射する発光部13を有する。発光部13は断面が四角形の棒状とすることで、線状に発光する光源装置を実現する。導入光部12には固定光源80を嵌合する受光部14として、略円錐台形状の凹溝を形成している。 2A and 2B are perspective views of the light guide 11 constituting the light source device 10, wherein FIG. 2A is a view seen from the light emitting side 13a, and FIG. 2B is a view seen from the facing surface side 13b. The light guide 11 made of a transparent material has an introduction light part 12 that introduces light from the solid light source 80 and a light emitting part 13 that emits light to the outside. The light emitting unit 13 is a rod having a square cross section, thereby realizing a light source device that emits light in a linear shape. The introduction light portion 12 is formed with a substantially frustoconical concave groove as the light receiving portion 14 into which the fixed light source 80 is fitted.
 発光部13の光出射側13aには、後述するように、略プリズム凹形状でピッチPの周期となるテクスチャー15を形成し、発光部13の対向面13bにも略プリズム凹形状でピッチPの周期となるテクスチャー16を形成している。これらのテクスチャー15,16により、それぞれのテクスチャーにより生じる光の濃淡が干渉し合い、発光部13から出射される出射光にはモアレ模様が発生する。 The light emission side 13a of the light emitting portion 13, as described below, to form a texture 15 which is a period of the pitch P 0 in a substantially prism concave shape, the pitch P in a substantially prism concave shape to the facing surface 13b of the light emitting portion 13 A texture 16 having a period of 1 is formed. The textures 15 and 16 interfere with each other in the shades of light generated by the respective textures, and a moiré pattern is generated in the outgoing light emitted from the light emitting unit 13.
 図3は、発光部13に形成するテクスチャー15,16の概略形状(B),(C)とモアレパターン(A)を示す図である。さらに図4にはテクスチャー15の詳細形状を、図5にはテクスチャー16の詳細形状を示す(いずれも、斜視図(A)と断面図(B))。 FIG. 3 is a diagram showing the schematic shapes (B) and (C) and the moire pattern (A) of the textures 15 and 16 formed on the light emitting unit 13. 4 shows the detailed shape of the texture 15 and FIG. 5 shows the detailed shape of the texture 16 (both are a perspective view (A) and a sectional view (B)).
 図3(B)のように、発光部13の光出射側13aには、テクスチャー15として直線状の溝をピッチPで形成している。その詳細形状は、図4に示すように、深さD、角度θ,θのプリズム凹形状としている。深さDは、0.03~0.1mmで、導入光部12から端部に向け徐々に深くなる形状とする。この構成により、発光部13からの発光強度が伝搬方向位置で均一化される。また角度θは20~45度、θは45~70度が好ましい。 As shown in FIG. 3B, linear grooves are formed as the texture 15 at the pitch P 0 on the light emitting side 13 a of the light emitting unit 13. As shown in FIG. 4, the detailed shape is a prism concave shape having a depth D 1 and angles θ 1 and θ 2 . The depth D 1 is 0.03 to 0.1 mm, and has a shape that gradually increases from the introduction light portion 12 toward the end portion. With this configuration, the light emission intensity from the light emitting unit 13 is made uniform at the position in the propagation direction. The angle θ 1 is preferably 20 to 45 degrees, and θ 2 is preferably 45 to 70 degrees.
 図3(C)のように、発光部13の対向面側13bには、テクスチャー16として中央部で屈曲した溝をピッチPで形成している。その詳細形状は、図5に示すように、前記中央部が溝端部に対してP/2だけシフトさせ、断面は深さD、角度θ,θのプリズム凹形状としている。深さDは、0.03~0.1mmで、導入光部12から端部に向け徐々に深くなる形状とする。この構成により、発光部13からの発光強度が伝搬方向位置で均一化される。また角度θは50~70度、θは20~45度が好ましい。 As in FIG. 3 (C), the surface facing 13b of the light emitting portion 13, are formed at a pitch P 1 of the groove which is bent at the central portion as a texture 16. As shown in FIG. 5, the detailed shape is such that the central portion is shifted by P 1/2 with respect to the groove end portion, and the cross section has a prism concave shape with depth D 2 and angles θ 3 and θ 4 . The depth D 2 is a 0.03 ~ 0.1 mm, and progressively deeper becomes shaped towards the end of the introduction the optical unit 12. With this configuration, the light emission intensity from the light emitting unit 13 is made uniform at the position in the propagation direction. The angle θ 3 is preferably 50 to 70 degrees, and θ 4 is preferably 20 to 45 degrees.
 テクスチャー15のピッチPとテクスチャー16のピッチPの関係は、P>P、より好ましくは(19/20)P≦P≦(79/80)Pとする。これにより両者のテクスチャー間で干渉が生じて、図3(A)に示すようなモアレ模様17が生じる。 Relation pitch P 1 of the pitch P 0 and texture 16 texture 15, and P 0> P 1, and more preferably (19/20) P 0 ≦ P 1 ≦ (79/80) P 0. As a result, interference occurs between the two textures, and a moire pattern 17 as shown in FIG.
 図6は、固体光源80の構成を示す斜視図である。固体光源80は、発光素子であるLEDチップ81が基板60にマウントされており、その外側にLED光源の発光分布特性を改善する樹脂キャップ83が形成されている。なお、必要に応じて固体光源80の発光スペクトル特性を変化させる目的で、LEDチップ81からの光を吸収し蛍光を発する蛍光体層82をLEDチップ81の外側に形成しても良い。 FIG. 6 is a perspective view showing the configuration of the solid light source 80. In the solid-state light source 80, an LED chip 81, which is a light-emitting element, is mounted on a substrate 60, and a resin cap 83 that improves the light emission distribution characteristics of the LED light source is formed on the outside thereof. Note that a phosphor layer 82 that absorbs light from the LED chip 81 and emits fluorescence may be formed outside the LED chip 81 for the purpose of changing the emission spectrum characteristics of the solid light source 80 as necessary.
 図7は、本実施例におけるモアレ模様発生のメカニズムを説明する図である。(A)(B)はモアレ模様を、(C)は導光体内の光線図を示す。 FIG. 7 is a diagram for explaining the mechanism of moiré pattern generation in this embodiment. (A) and (B) show a moire pattern, and (C) shows a ray diagram in the light guide.
 導光体11の発光部13には、左側から固体光源80からの光が入射し、発光部13の上下の壁面で複数回反射しながら発光部13内を伝搬する。このうち一部の光は、テクスチャー15,16により回折され、発光部壁面に対して、光線の入射角度が臨界角以下になり、発光部13の外に出射する。なお、対向面13bから出射した光線は、支持体61の反射膜62で反射し、発光部13内に戻る。 The light from the solid light source 80 enters the light emitting unit 13 of the light guide 11 from the left side and propagates through the light emitting unit 13 while being reflected by the upper and lower wall surfaces of the light emitting unit 13 a plurality of times. A part of the light is diffracted by the textures 15 and 16, and the incident angle of the light beam becomes less than the critical angle with respect to the light emitting unit wall surface and is emitted to the outside of the light emitting unit 13. The light beam emitted from the facing surface 13 b is reflected by the reflective film 62 of the support 61 and returns into the light emitting unit 13.
 光線追跡シミュレーションの結果、図5に示した対向面13b側のテクスチャー16の角度をθ>θ、かつθ≧50度とすることにより、テクスチャー16による反射された光(破線で示す)は、高い確率で発光部13の左側へ向う出射光91となり、また、前記テクスチャー16以外の部分で反射された光(実線で示す)は、高い確率で発光部13の右側へ向う出射光92となることが確認された。 As a result of the ray tracing simulation, the angle of the texture 16 on the facing surface 13b side shown in FIG. 5 is set to θ 3 > θ 4 and θ 3 ≧ 50 degrees, so that the light reflected by the texture 16 (shown by a broken line) Becomes the outgoing light 91 toward the left side of the light emitting unit 13 with a high probability, and the light reflected by the portion other than the texture 16 (shown by a solid line) is an outgoing light 92 toward the right side of the light emitting unit 13 with a high probability. It was confirmed that
 すなわち、発光部13から左側に出射する光91は、対向面13bのテクスチャー16で反射され、その後出射面13aのテクスチャー15あるいはその間を透過するもので、図7(A)で示すように、それぞれのテクスチャー15,16に起因するモアレ模様17aのコントラストは増大されたものとなる。 That is, the light 91 emitted to the left from the light emitting unit 13 is reflected by the texture 16 of the opposing surface 13b and then passes through the texture 15 of the emission surface 13a or between them, as shown in FIG. The contrast of the moire pattern 17a resulting from the textures 15 and 16 is increased.
 一方、発光部13から右側に出射する光92は、対向面13bのテクスチャー16で反射された光ではないため、図7(B)で示すように、それぞれのテクスチャー15,16に起因するモアレ模様17bのコントラストは小さいものとなる。 On the other hand, since the light 92 emitted to the right side from the light emitting unit 13 is not the light reflected by the texture 16 of the facing surface 13b, as shown in FIG. 7B, the moire pattern resulting from the respective textures 15 and 16 The contrast of 17b is small.
 ここで、テクスチャー15,16のピッチP,Pの関係はP>Pとしている。観察者(図中95)が発光部13の左側より発光部13に接近する場合は、観察者95により遠いテクスチャー16は、テクスチャー15に対して相対的に左側に移動して見えるので、モアレ模様17aは図7(A)に示した矢印方向すなわち左方向に移動する。従って、モアレ模様17aに見える矢印の方向と、モアレ模様17aの移動方向は一致する。 Here, the relationship between the pitches P 0 and P 1 of the textures 15 and 16 is P 0 > P 1 . When the observer (95 in the figure) approaches the light emitting unit 13 from the left side of the light emitting unit 13, the texture 16 farther from the observer 95 appears to move to the left side relative to the texture 15, and therefore a moire pattern. 17a moves in the direction of the arrow shown in FIG. Therefore, the direction of the arrow seen in the moire pattern 17a matches the moving direction of the moire pattern 17a.
 また、観察者95の発光部13に対する相対位置がわずかにずれるだけで、モアレ模様17aは大きく移動する。具体的には、テクスチャー15,16の相対位置がテクスチャーの1ピッチずれるだけで、モアレ模様17aは1周期分移動する。 Further, the moire pattern 17a moves greatly only by slightly shifting the relative position of the observer 95 with respect to the light emitting unit 13. Specifically, the moire pattern 17a moves by one period only when the relative positions of the textures 15 and 16 are shifted by one pitch of the texture.
 一方、観察者(図中96)が発光部13の右側より発光部13に接近する場合は、観察者96により近いテクスチャー16は、テクスチャー15に対して相対的に右側に移動して見えるので、モアレ模様17bは図7(B)に示した矢印方向すなわち右方向に移動する。従って、モアレ模様17bに見える矢印の方向と、モアレ模様17bの移動方向は逆転する。ただし、前記したように、右側から観察できるモアレ模様17bのコントラストは小さい。 On the other hand, when the observer (96 in the figure) approaches the light emitting unit 13 from the right side of the light emitting unit 13, the texture 16 closer to the observer 96 appears to move to the right side relative to the texture 15. The moire pattern 17b moves in the direction of the arrow shown in FIG. Accordingly, the direction of the arrow visible in the moire pattern 17b and the moving direction of the moire pattern 17b are reversed. However, as described above, the contrast of the moire pattern 17b that can be observed from the right side is small.
 テクスチャー15,16のピッチP,Pの値は、個々のテクスチャー自体は判別しにくいことが好ましいので、2mm以下とすることが望ましい。ただし、それぞれのピッチP,Pが小さくなりすぎると、テクスチャー加工精度確保が困難になるとともに加工費が増大するので、0.1mm以上とするのが望ましい。 The values of the pitches P 0 and P 1 of the textures 15 and 16 are preferably 2 mm or less because it is preferable that the individual textures are difficult to distinguish. However, if the pitches P 0 and P 1 are too small, it is difficult to ensure the texture processing accuracy and the processing cost increases.
 なお、テクスチャー15,16のピッチP,Pの関係を、前記とは逆にP<P、より好ましくは(19/20)P≦P≦(79/80)Pとしても良い。これにより、視線移動に対するモアレ模様の移動方向を反転することができる。P,P、の大小関係は、テクスチャー15、16の溝形状、および目的とするモアレ模様の移動方向により適宜決定すればよい。 Note that the relationship between the pitches P 0 and P 1 of the textures 15 and 16 is P 0 <P 1 , more preferably (19/20) P 1 ≦ P 0 ≦ (79/80) P 1. Also good. Thereby, the moving direction of the moire pattern with respect to the line-of-sight movement can be reversed. The magnitude relationship between P 0 and P 1 may be appropriately determined according to the groove shape of the textures 15 and 16 and the moving direction of the target moire pattern.
 実施例1の構成によれば、観察者の移動に対して、出射光に含まれるコントラストの高いモアレ模様の移動方向を特定方向に制御でき、高付加価値の光源装置が実現できる。この光源装置では発光模様の移動方向を特定方向に制御できることから、例えば光源色を黄色とした車両用の方向指示灯具などへの適用が有効である。 According to the configuration of the first embodiment, it is possible to control the moving direction of the high-contrast moire pattern included in the emitted light in a specific direction with respect to the movement of the observer, and a high added-value light source device can be realized. Since this light source device can control the direction of movement of the light emission pattern to a specific direction, it is effective to apply to, for example, a direction indicator lamp for a vehicle whose light source color is yellow.
 図8は、本発明に係る光源装置の第2の実施例を示す断面構成図である。光源装置20は、導光体21の両端に配置した2つの固体光源80a,80bから発生された光を導光体21に伝搬させ、発光部23から外部(図面上方向)に出射させるものである。発光部23の光出射側を23a、これの対向面を23bで示す。2つの固体光源80a,80bはそれぞれ基板70a,70bに搭載され、導光体21とともに、固定具73a,73bやネジ75a,75bによって支持体71に固定されている。支持体71の発光部23に対向する面には反射膜72を形成している。なお、反射膜72は発光部23の対向面23bに形成しても良い。 FIG. 8 is a cross-sectional configuration diagram showing a second embodiment of the light source device according to the present invention. The light source device 20 propagates the light generated from the two solid light sources 80a and 80b disposed at both ends of the light guide 21 to the light guide 21 and emits the light from the light emitting unit 23 to the outside (upward in the drawing). is there. The light emitting side of the light emitting unit 23 is indicated by 23a, and the opposite surface is indicated by 23b. The two solid light sources 80a and 80b are mounted on the substrates 70a and 70b, respectively, and are fixed to the support 71 together with the light guide 21 by fixtures 73a and 73b and screws 75a and 75b. A reflective film 72 is formed on the surface of the support 71 facing the light emitting portion 23. The reflective film 72 may be formed on the facing surface 23 b of the light emitting unit 23.
 図9は、光源装置20を構成する導光体21の斜視図であり、(A)は光出射側23aから見た図、(B)は対向面側23bから見た図である。透明材料からなる導光体21は、その両端に固体光源80a,80bからの光を導入する導入光部22a,22bを有し、中央部に外部に光を出射する発光部23を有する。発光部23は断面が四角形の棒状とすることで、線状に発光する光源を実現する。導入光部22a,22bには固定光源80a,80bを嵌合する受光部24a,24bとして、略円錐台形状の凹溝を形成している。 9A and 9B are perspective views of the light guide 21 that constitutes the light source device 20, in which FIG. 9A is a view seen from the light emitting side 23a, and FIG. 9B is a view seen from the facing surface side 23b. The light guide 21 made of a transparent material has introduction light portions 22a and 22b that introduce light from the solid light sources 80a and 80b at both ends, and a light emitting portion 23 that emits light to the outside at the center. The light emitting unit 23 is a rod having a square cross section, thereby realizing a light source that emits light in a linear shape. The introduction light portions 22a and 22b are formed with substantially frustoconical concave grooves as light receiving portions 24a and 24b for fitting the fixed light sources 80a and 80b.
 発光部23の光出射側23aには、後述するように、略プリズム凹形状でピッチPの周期となるテクスチャー25を形成し、発光部23の対向面23bにも略プリズム凹形状でピッチPの周期となるテクスチャー26を形成している。これらのテクスチャー25,26により、発光部23から出射される出射光は干渉されてモアレ模様が発生する。 As will be described later, a texture 25 having a substantially prism concave shape and a period of pitch P 0 is formed on the light emitting side 23 a of the light emitting portion 23, and a substantially prism concave shape having a pitch P on the facing surface 23 b of the light emitting portion 23. A texture 26 having a period of 1 is formed. Due to the textures 25 and 26, the outgoing light emitted from the light emitting unit 23 is interfered to generate a moire pattern.
 図10は、発光部23に形成するテクスチャー25,26の概略形状(B),(C)とモアレパターン(A)を示す図である。さらに図11にはテクスチャー25の詳細形状を、図12にはテクスチャー26の詳細形状を示す(いずれも、斜視図(A)と断面図(B))。 FIG. 10 is a diagram showing a schematic shape (B), (C) and a moire pattern (A) of the textures 25, 26 formed on the light emitting unit 23. Further, FIG. 11 shows a detailed shape of the texture 25, and FIG. 12 shows a detailed shape of the texture 26 (both are a perspective view (A) and a sectional view (B)).
 図10(B)のように、発光部23の光出射側23aには、テクスチャー25として直線状の溝をピッチPで形成している。その詳細形状は、図11に示すように、深さD、角度θ,θのプリズム凹形状としている。深さDは0.03~0.1mmで、また角度θ,θ、は、θ≒θとし、各々の角度は、30~60度が好ましい。 As shown in FIG. 10B, a straight groove is formed at the pitch P 0 as the texture 25 on the light emitting side 23 a of the light emitting portion 23. As shown in FIG. 11, the detailed shape is a prism concave shape having a depth D 1 and angles θ 1 and θ 2 . The depth D 1 is 0.03 to 0.1 mm, and the angles θ 1 and θ 2 are set to θ 1 ≈θ 2, and each angle is preferably 30 to 60 degrees.
 図10(C)のように、発光部23の対向面側23bには、テクスチャー26として中央部で屈曲した溝を形成しているが、そのピッチは、伝搬方向の中央部を境にして左側がP(テクスチャー26a)、右側がP(テクスチャー26b)となっている。その詳細形状は、図12に示すように、屈曲した溝は中央部が端部に対して、それぞれのピッチP1、の1/2だけシストした形状になっている。溝の断面は深さD、角度θ,θのプリズム凹形状であり、深さDは0.03~0.1mm、角度θ,θ、はθ≒θとし、各々の角度は、30~60度が好ましい。 As shown in FIG. 10C, a groove bent at the central portion is formed as the texture 26 on the opposite surface side 23b of the light emitting portion 23. The pitch is on the left side of the central portion in the propagation direction. Is P 1 (texture 26a), and the right side is P 2 (texture 26b). As shown in FIG. 12, the detailed shape of the bent groove is such that the center portion is cysted with respect to the end portion by a half of the respective pitches P 1 and P 2 . The cross section of the groove is a prism concave shape with a depth D 2 and angles θ 3 and θ 4 , the depth D 2 is 0.03 to 0.1 mm, and the angles θ 3 and θ 4 are θ 3 ≈θ 4 Each angle is preferably 30 to 60 degrees.
 テクスチャー25のピッチPとテクスチャー26のピッチP,Pを異ならせることで、両者のテクスチャー間で干渉が生じ、図10(A)に示すようなモアレ模様27が生じる。テクスチャー25のピッチPとテクスチャー26のピッチPおよびPの関係は、P<P<P、より好ましくは(14/15)P≦P≦(59/60)P、かつ(14/13)P≦P≦(51/50)Pとなっている。 By making the pitch P 0 of the texture 25 different from the pitches P 1 and P 2 of the texture 26, interference occurs between the textures, and a moire pattern 27 as shown in FIG. 10A is generated. The relationship between the pitch P 0 of the texture 25 and the pitches P 1 and P 2 of the texture 26 is P 1 <P 0 <P 2 , more preferably (14/15) P 0 ≦ P 1 ≦ (59/60) P 0. And (14/13) P 0 ≦ P 2 ≦ (51/50) P 0 .
 またテクスチャー25,26のピッチP,P,Pの値は、個々のテクスチャー自体は判別しにくいことが好ましいので、2mm以下とすることが望ましい。ただし、それぞれのピッチP,P,Pが小さくなりすぎると、テクスチャー加工精度確保が困難になるとともに加工費が増大するので、0.1mm以上とするのが望ましい。 In addition, the values of the pitches P 0 , P 1 , P 2 of the textures 25 and 26 are preferably 2 mm or less because it is preferable that the individual textures are difficult to distinguish. However, if the pitches P 0 , P 1 , and P 2 are too small, it becomes difficult to ensure the texture processing accuracy and the processing cost increases.
 図13は、本実施例におけるモアレ模様発生のメカニズムを説明する図である。(A)(B)はモアレ模様を、(C)は導光体内の光線図を示す。 FIG. 13 is a diagram for explaining the mechanism of moiré pattern generation in this embodiment. (A) and (B) show a moire pattern, and (C) shows a ray diagram in the light guide.
 導光体21の発光部23には、左側から固体光源80aからの光が、また右側から固体光源80bからの光が入射する。(C)では、左側から入射する光線のみを示しているが、右側から入射する光線もこれとほぼ対称になる。これらの入射光線は、発光部23の上下の壁面で複数回反射しながら発光部23内を伝搬する。このうち一部の光は、テクスチャー25,26により回折され、発光部壁面に対して光線の入射角度が臨界角以下になり、発光部23の外に出射する。なお、対向面23bから出射した光線は、支持体71の反射膜72で反射し、発光部23内に戻る。 The light from the solid light source 80a is incident on the light emitting unit 23 of the light guide 21 and the light from the solid light source 80b is incident from the right side. In (C), only the light rays entering from the left side are shown, but the light rays entering from the right side are also almost symmetrical. These incident light beams propagate through the light emitting unit 23 while being reflected by the upper and lower wall surfaces of the light emitting unit 23 a plurality of times. A part of the light is diffracted by the textures 25 and 26, and the incident angle of the light beam becomes a critical angle or less with respect to the light emitting unit wall surface and is emitted to the outside of the light emitting unit 23. The light beam emitted from the facing surface 23 b is reflected by the reflective film 72 of the support 71 and returns into the light emitting unit 23.
 光線追跡シミュレーションの結果、図12に示した対向面23b側のテクスチャー26の角度をθ≒θ=30~60度とすること、および左右の固体光源80a,80bから光が合成されることにより、発光部23の対向面23bに設けられたテクスチャー26により反射された光(破線で示す)は、発光部23の左右方向に略等しい確率で出射する。また、テクスチャー26以外の部分で反射された光(実線で示す)も、発光部23の左右方向に略等しい確率で出射する。その結果、発光部23の左方向に出射する出射光93と右方向に出射する出射光94の強度は略等しくなる。 As a result of the ray tracing simulation, the angle of the texture 26 on the facing surface 23b side shown in FIG. 12 is set to θ 3 ≈θ 4 = 30 to 60 degrees, and light is synthesized from the left and right solid light sources 80a and 80b. Thus, the light (shown by a broken line) reflected by the texture 26 provided on the facing surface 23 b of the light emitting unit 23 is emitted with a probability substantially equal to the left and right direction of the light emitting unit 23. In addition, light reflected by a portion other than the texture 26 (shown by a solid line) is also emitted with a substantially equal probability in the left-right direction of the light emitting unit 23. As a result, the intensity of the emitted light 93 emitted to the left of the light emitting unit 23 and the intensity of the emitted light 94 emitted to the right become substantially equal.
 従って、図13(A)(B)で示されるように、発光部23に対して左側の観察者95から観察されるモアレ模様27a、および右側の観察者96から観察されるモアレ模様27bのコントラストは等しくなる。 Accordingly, as shown in FIGS. 13A and 13B, the contrast of the moire pattern 27a observed from the left observer 95 and the moire pattern 27b observed from the right observer 96 with respect to the light emitting unit 23. Are equal.
 ここで、テクスチャー25,26のピッチP,P,Pの関係はP<P<Pとしている。観察者95が発光部23の左側より発光部23に接近する場合は、観察者95により遠いテクスチャー26は、テクスチャー25に対して相対的に左側に移動して見える。そのとき、発光部23の略中間部で、テクスチャー25のピッチPに対するテクスチャー26のピッチP,Pの大小関係が切り替わることにより、モアレ模様27aは図13(A)に示すように中央から湧き出すように見える。 Here, the relationship between the pitches P 0 , P 1 , and P 2 of the textures 25 and 26 is P 1 <P 0 <P 2 . When the observer 95 approaches the light emitting unit 23 from the left side of the light emitting unit 23, the texture 26 farther from the observer 95 appears to move to the left relative to the texture 25. At that time, the moire pattern 27a is centered as shown in FIG. 13 (A) by switching the magnitude relationship of the pitches P 1 and P 2 of the texture 26 with respect to the pitch P 0 of the texture 25 at a substantially intermediate portion of the light emitting unit 23. Looks like it springs from.
 また、観察者95の発光部23に対する相対位置がわずかにずれるだけで、モアレ模様27aは大きく移動する。具体的には、テクスチャー25,26の相対位置がテクスチャーの1ピッチずれるだけで、モアレ模様27aは1周期分移動する。 Further, the moire pattern 27a moves greatly only by slightly shifting the relative position of the observer 95 with respect to the light emitting unit 23. Specifically, the moire pattern 27a moves by one period only when the relative positions of the textures 25 and 26 are shifted by one pitch of the texture.
 一方、観察者96が発光部23の右側より発光部23に接近する場合は、観察者96により近いテクスチャー26は、テクスチャー15に対して相対的に右側に移動して見えるので、モアレ模様27bは図13(B)に示すように中央に吸い込まれるように見える。 On the other hand, when the observer 96 approaches the light emitting unit 23 from the right side of the light emitting unit 23, the texture 26 closer to the observer 96 appears to move to the right side relative to the texture 15. As shown in FIG. 13B, it appears to be sucked into the center.
 実施例2の構成によれば、観察者のわずかな移動に対して、広範囲にわたりモアレ模様の変化が観察される光源装置が実現できる。この光源装置では観察者に注意喚起を促すことができることから、例えば光源色を赤色とし、車両用のブレーキランプなどへの適用が有効である。 According to the configuration of the second embodiment, it is possible to realize a light source device capable of observing a change in the moire pattern over a wide range with respect to slight movement of the observer. In this light source device, the observer can be alerted, and therefore, for example, the light source color is red, and application to a vehicle brake lamp or the like is effective.
 図14は、本発明に係る光源装置の第3の実施例として、導光体31の発光部33に形成するテクスチャー35,36の概略形状(B),(C)とモアレパターン(A)を示す図である。なお光源装置30と導光体31の全体構成は、前記した光源装置10または20、導光体11または21と同様である。 FIG. 14 shows, as a third embodiment of the light source device according to the present invention, the schematic shapes (B) and (C) and the moire pattern (A) of the textures 35 and 36 formed on the light emitting portion 33 of the light guide 31. FIG. The overall configuration of the light source device 30 and the light guide 31 is the same as that of the light source device 10 or 20 and the light guide 11 or 21 described above.
 (B)のように光出射側33aには、テクスチャー35として直線状の溝をピッチPで形成している。一方(C)のように対向面側33bには、テクスチャー36として、ピッチPの直線状の溝を3つの領域36a,36b,36cに分割して形成している。各領域における溝の位置は(1/3)Pだけずれている。 As shown in (B), linear grooves are formed at the pitch P 0 as the texture 35 on the light emitting side 33a. The facing side 33b as contrast (C), as a texture 36, are formed by dividing the linear grooves of pitch P 1 3 one region 36a, 36b, to 36c. The position of the groove in each region is shifted by (1/3) P 1.
 テクスチャー35,36のピッチP,Pの関係はP<P、より好ましくは(19/20)P≦P≦(79/80)Pになっている。このような形状とすることで、両者のテクスチャー間で干渉が生じ、図14(A)に示すようなモアレ模様37が生じる。 The relationship between the pitches P 0 and P 1 of the textures 35 and 36 is P 1 <P 0 , more preferably (19/20) P 0 ≦ P 1 ≦ (79/80) P 0 . By setting it as such a shape, interference arises between both textures and the moire pattern 37 as shown to FIG. 14 (A) arises.
 観察者の発光部に対する相対位置がわずかにずれるだけで、モアレ模様37は大きく移動する。具体的には、テクスチャー35,36の相対位置がテクスチャーの1ピッチずれるだけで、3分割された領域でモアレ模様37は1周期分移動する。 The moiré pattern 37 moves greatly only when the relative position of the observer with respect to the light emitting portion is slightly shifted. Specifically, the moire pattern 37 moves by one period in the three-divided region only by shifting the relative positions of the textures 35 and 36 by one pitch of the texture.
 なお、テクスチャー35,36のピッチP,Pの関係を、前記とは逆にP>P、より好ましくは(19/20)P≦P≦(79/80)Pとしても良い。これにより、視線移動に対するモアレ模様の移動方向を反転することができる。 Note that the relationship between the pitches P 0 and P 1 of the textures 35 and 36 is P 1 > P 0 , more preferably (19/20) P 1 ≦ P 0 ≦ (79/80) P 1. Also good. Thereby, the moving direction of the moire pattern with respect to the line-of-sight movement can be reversed.
 実施例3の構成によれば、観察者のわずかな移動に対してモアレ模様が多彩に変化し、高級感のある光源装置が実現できる。この光源装置は、例えば屋内外の照明器具や車内照明用灯具に有効に適用できる。 According to the configuration of the third embodiment, a moire pattern is variously changed with slight movement of an observer, and a high-quality light source device can be realized. This light source device can be effectively applied to, for example, indoor and outdoor lighting fixtures and interior lighting lamps.
 図15は、本発明に係る光源装置の第4の実施例として、導光体41の発光部43に形成するテクスチャー45,46の概略形状(B),(C)とモアレパターン(A)を示す図である。なお光源装置40と導光体41の全体構成は、前記した光源装置10または20、導光体11または21と同様である。 FIG. 15 shows schematic shapes (B), (C) and moire patterns (A) of the textures 45, 46 formed on the light emitting portion 43 of the light guide 41 as a fourth embodiment of the light source device according to the invention. FIG. The overall configuration of the light source device 40 and the light guide 41 is the same as that of the light source device 10 or 20 and the light guide 11 or 21 described above.
 (B)のように光出射側43aには、テクスチャー45として直線状の溝をピッチPで形成している。一方(C)のように対向面側43bには、テクスチャー46として、曲線状の溝をピッチPで形成している。この曲線状の溝は、発光部43の幅方向(上下方向)中央位置が原点となる3次曲線形状もしくは中央部で極性が反転する2次曲線形状とし、上下端部では、中央位置に対して長手方向(左右方向)にそれぞれ±(1/2)Pだけシストさせている。 As shown in (B), linear grooves are formed at the pitch P 0 as the texture 45 on the light emitting side 43a. The opposing side 43b as the other hand (C) is as a texture 46, to form a curved groove at a pitch P 1. The curved groove is a cubic curve shape having a center position in the width direction (vertical direction) of the light emitting portion 43 as a starting point or a quadratic curve shape whose polarity is reversed at the center portion. respectively ± (1/2) is only P 1 cysts in the longitudinal direction (lateral direction) Te.
 テクスチャー45,46のピッチP,Pの関係はP<P、より好ましくは(19/20)P≦P≦(79/80)Pになっている。なお、対向面側43bでのテクスチャー46の形成幅は、光出射側43aでのテクスチャー45の形成幅よりも狭くしている。このような形状とすることで、両者のテクスチャー間で干渉が生じ、図15(A)に示すようなモアレ模様47が生じる。 The relationship between the pitches P 0 and P 1 of the textures 45 and 46 is P 1 <P 0 , more preferably (19/20) P 0 ≦ P 1 ≦ (79/80) P 0 . The formation width of the texture 46 on the facing surface side 43b is narrower than the formation width of the texture 45 on the light emission side 43a. By setting it as such a shape, interference arises between both textures and the moire pattern 47 as shown to FIG. 15 (A) arises.
 観察者の発光部に対する相対位置がわずかにずれるだけで、モアレ模様47は大きく移動する。また、モアレ模様47は図15(A)のように円筒側面のように見えることから、発光部は疑似的に立体形状に見える。 The moiré pattern 47 moves greatly only when the relative position of the observer with respect to the light emitting portion is slightly shifted. Further, since the moire pattern 47 looks like a cylindrical side as shown in FIG. 15A, the light emitting portion looks like a pseudo three-dimensional shape.
 実施例3の構成によれば、観察者のわずかな移動に対して疑似的に立体状に見えるモアレ模様が発現し、奥行き感のある光源装置が実現できる。この光源装置は、例えば屋内外の照明器具や車内照明用灯具に有効に適用できる。 According to the configuration of the third embodiment, a moire pattern that appears in a pseudo three-dimensional shape with respect to slight movement of an observer appears, and a light source device with a sense of depth can be realized. This light source device can be effectively applied to, for example, indoor and outdoor lighting fixtures and interior lighting lamps.
 前記した実施例では、線状の導光体を有する線状の光源装置について説明したが、本実施例では、面状の導光体を有する面状の光源装置(面状照明器具)について説明する。 In the above-described embodiment, a linear light source device having a linear light guide has been described, but in this embodiment, a planar light source device (planar lighting fixture) having a planar light guide is described. To do.
 図16は、面状照明器具としてシーリングライト50の外観を示す斜視図である。シーリングライト50は、照明光を発生する円板状の導光体51およびこれを支持するカバー57と、その内部に固体光源、基板、導光体の裏面に設置される反射体など(いずれも図示せず)から構成され、天井面あるいは壁面に取り付ける。導光体51の表面には、複数のテクスチャー55を形成している。 FIG. 16 is a perspective view showing an appearance of a ceiling light 50 as a planar lighting fixture. The ceiling light 50 includes a disk-shaped light guide 51 that generates illumination light, a cover 57 that supports the light guide 51, a solid light source, a substrate, a reflector installed on the back surface of the light guide, and the like (all of them). (Not shown) and is attached to the ceiling or wall surface. A plurality of textures 55 are formed on the surface of the light guide 51.
 図17は、面状導光体51の構造を示す斜視断面図で、(A)は導光体51を裏面側(天井側)から見た図、(B)は導光体51を光出射側(裏面側)から見た図である。 17A and 17B are perspective sectional views showing the structure of the planar light guide 51. FIG. 17A is a view of the light guide 51 viewed from the back side (ceiling side), and FIG. It is the figure seen from the side (back side).
 円板状の導光体51は、環状の光導入部52および平面状の発光部53からなる。光導入部52には、円周上に複数の凹形状の受光部54が設置され、そこに複数の固体光源(図示せず)が嵌合される。固体光源の形状は、図6に示した形状と同様である。 The disk-shaped light guide 51 includes an annular light introducing portion 52 and a planar light emitting portion 53. In the light introduction part 52, a plurality of concave light receiving parts 54 are installed on the circumference, and a plurality of solid light sources (not shown) are fitted therein. The shape of the solid light source is the same as that shown in FIG.
 また、発光部53の光出射側には複数のテクスチャー55が、それと対向する裏面側にはテクスチャー56が形成されている。テクスチャー55,56の形状(溝形状)は、前記実施例で示した各テクスチャーの形状を適宜選択して採用する。 Also, a plurality of textures 55 are formed on the light emitting side of the light emitting portion 53, and a texture 56 is formed on the back side facing it. As the shapes (groove shapes) of the textures 55 and 56, the shape of each texture shown in the above embodiment is appropriately selected and adopted.
 図18は、面状導光体に用いるテクスチャーの輪郭形状の例を示す図である。(A)は、図16および図17に示した導光体51の出射側に用いたテクスチャー55の輪郭形状である。輪郭形状はこれ以外の様々な模様が可能であり、(B)のような放射状幾何学模様、(C)のような花びら模様、(D)のような文字あるいはロゴ模様などが可能である。これらのテクスチャーを有する光源装置は、視野角のわずかな変化で、照明光のモアレ模様が大きく変化する。よって、点滅する機構がなくても、観察者に対する注意喚起が行え、趣向性の高い屋内照明ばかりでなく、ロゴマーク表示や表示灯として有効に適用できる。 FIG. 18 is a diagram showing an example of the contour shape of the texture used for the planar light guide. (A) is the outline shape of the texture 55 used for the output side of the light guide 51 shown in FIGS. 16 and 17. The contour shape can be various other patterns, such as a radial geometric pattern as shown in (B), a petal pattern as shown in (C), or a character or logo pattern as shown in (D). In the light source device having these textures, the moire pattern of the illumination light changes greatly with a slight change in the viewing angle. Therefore, even if there is no flashing mechanism, the viewer can be alerted and can be effectively applied not only to highly-intended indoor lighting but also as a logo mark display or indicator lamp.
 10,20…光源装置、
 11,21…導光体、
 12,22…光導入部、
 13,23…発光部、
 14,24…受光部、
 15,16,25,26,35,36,45,46,55,56…テクスチャー、
 17,27,37,47…モアレ模様、
 50…シーリングライト、
 60,70…基板、
 61,71…支持体、
 80…固体光源。
10, 20 ... light source device,
11, 21 ... light guide,
12, 22 ... light introduction part,
13, 23 ... light emitting part,
14, 24... Light receiving part,
15, 16, 25, 26, 35, 36, 45, 46, 55, 56 ... texture,
17, 27, 37, 47 ... Moire pattern,
50 ... Ceiling light,
60, 70 ... substrate,
61, 71 ... support,
80: Solid light source.

Claims (10)

  1.  固体光源と、該固体光源から出射された光を外部に出射する導光体とを備えた光源装置であって、
     前記導光体は、少なくとも光を出射する第1の面および該第1の面に対向して略平行な第2の面を有し、
     前記第1の面および前記第2の面には、それぞれピッチの異なる周期状の第1のテクスチャーおよび第2のテクスチャーが形成されており、
     前記第1のテクスチャーにより生じる光の濃淡と前記第2のテクスチャーにより生じる光の濃淡の干渉により、前記導光体の前記第1の面から出射する光にモアレ模様を発生させることを特徴とする光源装置。
    A light source device comprising a solid light source and a light guide that emits light emitted from the solid light source to the outside,
    The light guide has at least a first surface for emitting light and a second surface substantially parallel to the first surface,
    Periodic first texture and second texture having different pitches are formed on the first surface and the second surface, respectively.
    A moiré pattern is generated in the light emitted from the first surface of the light guide due to interference between light density produced by the first texture and light density produced by the second texture. Light source device.
  2.  請求項1に記載した光源装置において、
     前記導光体に対する視線位置を移動させるとき、前記第1のテクスチャーと前記第2のテクスチャーの相対位置が変わることにより前記モアレ模様が移動することを特徴とする光源装置。
    The light source device according to claim 1,
    The light source device according to claim 1, wherein when the line-of-sight position with respect to the light guide is moved, the moire pattern is moved by changing a relative position between the first texture and the second texture.
  3.  請求項2に記載した光源装置において、
     前記視線位置の移動方向が異なるとき、前記第1のテクスチャーに対する前記第2のテクスチャーの相対位置が変わる方向が異なることにより、前記モアレ模様の移動方向が異なるとともに、前記第2のテクスチャーにより回折される光の方位角と回折されない光の方位角が異なることにより、視線の方向により前記モアレ模様のコントラストが異なることを特徴とする光源装置。
    The light source device according to claim 2,
    When the direction of movement of the line-of-sight position is different, the direction of change of the relative position of the second texture with respect to the first texture is different, so that the direction of movement of the moire pattern is different and is diffracted by the second texture. The light source apparatus is characterized in that the moiré pattern has a different contrast depending on the direction of the line of sight because the azimuth angle of the diffracted light and the azimuth angle of the undiffracted light are different.
  4.  請求項2に記載した光源装置において、
     前記視線位置の移動方向が異なるとき、前記第1のテクスチャーに対する前記第2のテクスチャーの相対位置が変わる方向が異なることにより、前記モアレ模様の移動方向が異なるとともに、前記導光体の位置により前記モアレ模様の移動方向が異なることを特徴とする光源装置。
    The light source device according to claim 2,
    When the direction of movement of the line-of-sight position is different, the direction of change of the relative position of the second texture with respect to the first texture is different, the direction of movement of the moire pattern is different, and the position of the light guide A light source device characterized in that the moving direction of the moire pattern is different.
  5.  請求項4に記載した光源装置において、
     前記第1のテクスチャーと第2のテクスチャーのピッチの大小関係が前記導光体の位置により切り替わることにより、前記導光体の位置に対応して前記モアレ模様の移動方向が異なることを特徴とする光源装置。
    The light source device according to claim 4,
    The moving direction of the moire pattern differs depending on the position of the light guide when the magnitude relationship between the pitches of the first texture and the second texture is switched depending on the position of the light guide. Light source device.
  6.  請求項1~5の何れか1項に記載した光源装置において、
     前記導光体上に形成された前記テクスチャーのピッチは、0.1mm以上かつ2mm以下あることを特徴とする光源装置。
    The light source device according to any one of claims 1 to 5,
    The light source device according to claim 1, wherein a pitch of the texture formed on the light guide is 0.1 mm or more and 2 mm or less.
  7.  請求項2に記載された光源装置を、車両の少なくとも正面、側面、後面、室内のいずれかにに取り付けたことを特徴とする車両用灯具。 A vehicle lamp characterized in that the light source device according to claim 2 is attached to at least one of a front surface, a side surface, a rear surface, and a room of the vehicle.
  8.  請求項3に記載された光源装置を、前記固体光源の色を黄色とし、車両用方向指示用として取り付けたことを特徴とする車両用灯具。 4. A vehicular lamp comprising the light source device according to claim 3, wherein the solid-state light source has a yellow color and is attached for vehicle direction indication.
  9.  請求項4に記載された光源装置を、前記固体光源の色を赤色とし、車両用ストップランプとして取り付けたことを特徴とする車両用灯具。 5. A vehicular lamp, wherein the light source device according to claim 4 is mounted as a vehicular stop lamp with the solid light source having a red color.
  10.  請求項1~6の何れか1項に記載した光源装置を光源とし、天井面あるいは壁面あるいは屋外に取り付けたことを特徴とする照明器具。 A lighting fixture characterized in that the light source device according to any one of claims 1 to 6 is used as a light source and is mounted on a ceiling surface, a wall surface or outdoors.
PCT/JP2015/052039 2015-01-26 2015-01-26 Light source device, and lighting equipment and automotive lamp using same WO2016120973A1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022207726A1 (en) * 2021-03-30 2022-10-06 Marelli Automotive Lighting France Light device for a motor vehicle capable of creating an optical effect known as moiré

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010146818A (en) * 2008-12-17 2010-07-01 Koito Mfg Co Ltd Lighting fixture for vehicle
JP2013062110A (en) * 2011-09-13 2013-04-04 Koito Mfg Co Ltd Vehicular lamp
JP2015015077A (en) * 2013-07-03 2015-01-22 パナソニックIpマネジメント株式会社 Lighting apparatus, lamp, and vehicle

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010146818A (en) * 2008-12-17 2010-07-01 Koito Mfg Co Ltd Lighting fixture for vehicle
JP2013062110A (en) * 2011-09-13 2013-04-04 Koito Mfg Co Ltd Vehicular lamp
JP2015015077A (en) * 2013-07-03 2015-01-22 パナソニックIpマネジメント株式会社 Lighting apparatus, lamp, and vehicle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022207726A1 (en) * 2021-03-30 2022-10-06 Marelli Automotive Lighting France Light device for a motor vehicle capable of creating an optical effect known as moiré
FR3121500A1 (en) * 2021-03-30 2022-10-07 Marelli Automotive Lighting France Luminous device for a motor vehicle capable of creating an optical effect known as moiré.

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