WO2011074185A1 - ストロボ装置、及び撮像装置 - Google Patents
ストロボ装置、及び撮像装置 Download PDFInfo
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- WO2011074185A1 WO2011074185A1 PCT/JP2010/006822 JP2010006822W WO2011074185A1 WO 2011074185 A1 WO2011074185 A1 WO 2011074185A1 JP 2010006822 W JP2010006822 W JP 2010006822W WO 2011074185 A1 WO2011074185 A1 WO 2011074185A1
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- WIPO (PCT)
- Prior art keywords
- discharge tube
- total reflection
- incident
- light
- strobe device
- Prior art date
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B15/00—Special procedures for taking photographs; Apparatus therefor
- G03B15/02—Illuminating scene
- G03B15/03—Combinations of cameras with lighting apparatus; Flash units
- G03B15/05—Combinations of cameras with electronic flash apparatus; Electronic flash units
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B15/00—Special procedures for taking photographs; Apparatus therefor
- G03B15/02—Illuminating scene
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B2215/00—Special procedures for taking photographs; Apparatus therefor
- G03B2215/05—Combinations of cameras with electronic flash units
- G03B2215/0582—Reflectors
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B2215/00—Special procedures for taking photographs; Apparatus therefor
- G03B2215/05—Combinations of cameras with electronic flash units
- G03B2215/0589—Diffusors, filters or refraction means
- G03B2215/0592—Diffusors, filters or refraction means installed in front of light emitter
Definitions
- the present invention provides a discharge tube in which a reflection film is formed on the outer peripheral surface of a glass bulb and a light transmission part made of a non-reflection film is formed on the front side, and light emitted from the light transmission part of the discharge tube.
- the present invention relates to a strobe device including an optical member for irradiating an irradiation target such as a subject, and an imaging device including the same.
- a strobe device used for taking a picture or taking a movie an apparatus equipped with a reflector that reflects light emitted from a discharge tube to an irradiation target side has been widely used.
- the reflector needs to have a large opening in order to collect the light emitted in all directions from the center of the discharge tube (glass bulb) (light emitted from the entire circumference of the discharge tube) within the irradiation range.
- the light emitted from the discharge tube is reflected by a reflector
- the light emitted from the discharge tube to the side opposite to the irradiation target (front) side is transmitted through a glass bulb or reflector having a refractive index larger than that of air. Since reflection is repeated a plurality of times, the amount of light is reduced each time.
- a strobe device has been proposed in which the light collection efficiency is improved by providing an optical member such as a light guide in addition to the reflector. Since this type of strobe device condenses light whose light amount has been reduced by reflection by a reflector with an optical member having a different refractive index, the light amount may be further reduced (see, for example, Patent Document 1).
- a strobe device includes a discharge tube in which a light transmission portion formed of a non-reflecting region of a reflective film is formed on the front surface side of the outer peripheral surface of the bulb.
- the inventor in order to collect the divergent light emitted from the light transmission part of the discharge tube having the above-described configuration and increase the luminous efficiency, the light transmission part of the discharge tube and the reflection inside the optical member It was found that the positional relationship between the curved surface and the center of the discharge tube (the axis of the glass bulb) is important.
- a strobe device is a discharge tube in which a reflection film is formed on the outer peripheral surface of a cylindrical glass bulb and a light transmission portion made of a non-reflection film formation region is formed on the front side of the outer peripheral surface of the glass bulb.
- an optical member disposed in front of the light transmission part, the optical member being formed to face the light transmission part in front of the light transmission part of the discharge tube, and transmitting light
- a pair of second incident surfaces that allow the complementary light beam obliquely radiated forward from the light transmission part of the discharge tube to be incident on the outer side of the second incident surface and spaced forward in a direction perpendicular to the axis of the discharge tube
- the complementary beam from the second entrance surface is A pair of total reflection surfaces that are totally reflected and an exit surface that is formed in front of the first incident surface and that emits a principal ray and a complementary ray to the outside.
- Each of the pair of total reflection surfaces is on the discharge tube side.
- the two tangents to each curved surface extending from the starting point on the discharge tube side of each curved surface are the rear side from the center of the discharge tube and the glass bulb. It is formed so as to intersect on the front side of the outer peripheral surface.
- the principal ray emitted forward from the light transmission part of the discharge tube passes through the first incident surface and the emission surface and is emitted forward. That is, the principal ray transmitted through the light transmission part has a zero or small angle with respect to the optical axis of the strobe device, so that even if it passes through the first transmission part and the exit surface in front of the light transmission part, it is large.
- the irradiation range on the front side is irradiated without spreading.
- the complementary light beam emitted obliquely forward from the light transmission part of the discharge tube has a larger angle with respect to the optical axis of the strobe device than the main light beam. It is incident on a certain second incident surface. Then, the complementary light beam incident on each second incident surface passes through the second incident surface and is guided onto the total reflection surface.
- the complementary light beam is refracted by incidence on the second incident surface and is guided to the total reflection surface at a larger angle with respect to the optical axis of the strobe device than when emitted from the light transmission part of the discharge tube.
- the direction is changed to the optical axis side of the strobe device by reflection on the reflecting surface.
- the strobe device having the above-described configuration is configured such that each total reflection surface is a curved surface that increases the distance from each other toward the front from the discharge tube side, and each start point on the discharge tube side of each curved surface is a contact point. Two tangents to the curved surface are formed so as to intersect the rear side of the center of the discharge tube and the front side of the outer peripheral surface of the glass bulb.
- the complemented light beam is in a state of rising as the reflection position is closer to the discharge tube side (starting point side of the curved surface) (a state of approaching parallel to the optical axis of the strobe device).
- the strobe device having the above-described configuration can efficiently emit the chief ray and the complementary ray within the irradiation range ahead without emitting light from the discharge tube in a manner other than the irradiation range.
- FIG. 1 is a schematic perspective view of a strobe device according to an embodiment of the present invention.
- FIG. 2 is a schematic perspective view of a light emitting unit in the strobe device according to the embodiment of the present invention.
- FIG. 3 is a schematic cross-sectional view of a light emitting unit in the strobe device according to the embodiment of the present invention.
- FIG. 4A is a schematic cross-sectional view of a light emitting unit according to the first example for explaining a difference in optical path between the light emitting unit of the first example of the present invention and the light emitting unit of the comparative example.
- FIG. 1 is a schematic perspective view of a strobe device according to an embodiment of the present invention.
- FIG. 2 is a schematic perspective view of a light emitting unit in the strobe device according to the embodiment of the present invention.
- FIG. 3 is a schematic cross-sectional view of a light emitting unit in the strobe device according to the embodiment of the present invention.
- FIG. 4B is a schematic cross-sectional view of the light emitting unit according to the first comparative example for explaining the difference in optical path between the light emitting unit of the first embodiment of the present invention and the light emitting unit of the comparative example.
- FIG. 4C is a schematic cross-sectional view of the light emitting unit according to the second comparative example for explaining the difference in optical path between the light emitting unit of the first embodiment of the present invention and the light emitting unit of the comparative example.
- FIG. 5A is a graph showing the light distribution of the light emitting unit according to the first example for explaining the difference in light distribution between the light emitting unit of the first example of the present invention and the light emitting unit of the comparative example.
- FIG. 5B is a graph showing the light distribution of the light emitting unit according to the first comparative example for explaining the difference in light distribution between the light emitting unit of the first example of the present invention and the light emitting unit of the comparative example.
- FIG. 5C is a graph showing the light distribution of the light emitting unit according to the second comparative example for explaining the difference in light distribution between the light emitting unit of the first example of the present invention and the light emitting unit of the comparative example.
- FIG. 6A is a schematic cross-sectional view of a light emitting unit according to the second example for explaining a difference in optical path between the light emitting unit of the second example of the present invention and the light emitting unit of the comparative example.
- FIG. 6B is a schematic cross-sectional view of the light emitting unit according to the third comparative example for explaining the difference in the optical path between the light emitting unit of the second embodiment of the present invention and the light emitting unit of the comparative example.
- FIG. 6C is a schematic cross-sectional view of a light emitting unit according to a fourth comparative example for explaining the difference in optical path between the light emitting unit of the second embodiment of the present invention and the light emitting unit of the comparative example.
- FIG. 7A is a graph showing the light distribution of the light emitting unit according to the second example for explaining the difference in light distribution between the light emitting unit of the second example of the present invention and the light emitting unit of the comparative example.
- FIG. 7B is a graph showing the light distribution of the light emitting unit according to the third comparative example for explaining the difference in light distribution between the light emitting unit of the second embodiment of the present invention and the light emitting unit of the comparative example.
- FIG. 7C is a graph showing the light distribution of the light emitting unit according to the fourth comparative example for explaining the difference in light distribution between the light emitting unit of the second embodiment of the present invention and the light emitting unit of the comparative example.
- FIG. 8 is a front view of an embodiment of an imaging apparatus equipped with the strobe device according to the embodiment of the present invention.
- FIG. 9 is a diagram showing an external configuration of another embodiment of an imaging apparatus equipped with the strobe device according to the embodiment of the present invention.
- the strobe device is provided in an imaging device (not shown) such as a digital camera, an analog camera, or a video camera.
- the strobe device includes a light emitting unit 2 that emits light to be irradiated toward an irradiation target such as a subject, and a holding unit 3 that holds the light emitting unit 2.
- the light emitting unit 2 includes a reflective film 5 formed on the outer peripheral surface of the cylindrical glass bulb 4 and a region where no reflective film 5 is formed on the front side of the outer peripheral surface of the glass bulb 4.
- the discharge tube 7 in which the light transmissive part 6 is formed and the optical member 8 disposed in front of the light transmissive part 6 are provided.
- the discharge tube 7 is a so-called flash discharge tube, and electrode terminals 9a and 9b are sealed at both ends of a cylindrical glass bulb 4 as shown in FIG.
- the reflection film 5 and the light transmission part 6 are formed as described above, and the reflection film 5 corresponds to the light emitting region of the discharge tube 7 and the shaft of the glass bulb 4.
- the light transmitting portion 6 is formed to extend in the axis C direction of the glass bulb 4 corresponding to the light emitting region of the discharge tube 7.
- the reflective film 5 is formed by metal vapor deposition, and as shown in FIG. 3, a range of 240 ° to 270 ° in the circumferential direction of the glass bulb 4 around the axis C of the glass bulb 4. Formed. Accordingly, in the discharge tube 7 according to the present embodiment, the light transmission portion 6, which is a portion where the reflective film 5 is not formed on the outer peripheral surface of the glass bulb 4, is centered on the axis C of the glass bulb 4. 4 is formed in a range of 90 ° to 120 ° in the circumferential direction. Therefore, the light transmission part 6 is formed in a rectangular region that is long in the direction in which the axis C of the glass bulb 4 extends.
- the optical member 8 is formed so as to face the entire region of the light transmission part 6 of the discharge tube 7. Therefore, the optical member 8 according to the present embodiment is formed to have a longitudinal direction in one direction corresponding to the light transmitting portion 6 having a longitudinal direction in the axial center C direction of the glass bulb 4.
- the optical member 8 makes light from the discharge tube 7 incident, reflects the incident light inside and emits it to the outside, and is made of a transparent material having light transmittance. That is, the optical member 8 can be formed of transparent glass or resin. In the present embodiment, the optical member 8 is formed of a transparent acrylic resin in order to achieve both optical performance and ease of molding.
- the optical member 8 includes a first incident surface 10, a pair of second incident surfaces 11a and 11b, a pair of total reflection surfaces 12a and 12b, and an exit surface 13.
- the first incident surface 10 is formed in front of the light transmission part 6 of the discharge tube 7 so as to face the light transmission part 6, and allows the principal ray BM emitted from the light transmission part 6 to enter the front.
- the pair of second incident surfaces 11a and 11b are formed to extend from the discharge tube 7 side to the first incident surface 10 side with an interval in a direction orthogonal to the axis C of the discharge tube 7 (glass bulb 4).
- a complementary light beam BS emitted obliquely forward from the light transmission part 6 of the discharge tube 7 is made incident.
- the pair of total reflection surfaces 12a and 12b are formed so as to extend forward and outward from the second incident surfaces 11a and 11b with an interval in a direction orthogonal to the axis C of the discharge tube 7.
- the complementary rays BS from the surfaces 11a and 11b are totally reflected forward.
- the exit surface 13 is formed in front of the first entrance surface 10, and emits the principal ray BM and the complementary ray BS to the outside.
- the first incident surface 10 is formed of a curved surface projecting toward the discharge tube 7 side. That is, the first incident surface 10 is curved from one end edge to the other end in a direction orthogonal to the axis C of the discharge tube 7 so as to protrude toward the opposite side to the exit surface 13 side. It is composed of curved surfaces.
- the curvature of the first incident surface 10 is determined according to the irradiation range of light on the irradiation target such as a subject.
- the optical axis BL is set on an imaginary line passing through the center (axial center) C of the discharge tube 7 and the center of the light transmission part 6 in the circumferential direction of the glass bulb 4.
- the first incident surface 10 is formed so that the optical axis BL passes through the center in the direction orthogonal to the axis C of the discharge tube 7 (glass bulb 4).
- each of the pair of second incident surfaces 11 a and 11 b is set on the discharge tube 7 side, and the end point is connected to the edge of the first incident surface 10. That is, each of the second incident surfaces 11a and 11b has a starting point located in the vicinity of both edges (boundary with the reflecting film 5) of the light transmitting portion 6 in the circumferential direction of the glass bulb 4, and extends forward from the starting point.
- the end point is connected to each edge of the first incident surface 10 (both end edges in a direction orthogonal to the axis C of the discharge tube 7).
- the pair of second incident surfaces 11a and 11b are arranged symmetrically with respect to the optical axis BL.
- each of the second incident surfaces 11a and 11b is formed so that the end point side is inclined closer to the optical axis BL than the start point side. That is, the second incident surfaces 11 a and 11 b are set such that the start point is outside the end point (the position away from the optical axis BL) in the direction orthogonal to the axis C of the discharge tube 7.
- the 1st incident surface 10 and a pair of 2nd incident surfaces 11a and 11b have demarcated the groove-shaped recessed part.
- Each of the pair of total reflection surfaces 12a and 12b is configured by curved surfaces that increase the distance from each other toward the front from the discharge tube 7 side, and contacts the starting point SP on the discharge tube 7 side of each of the curved surfaces 12a and 12b.
- the two tangents TLa and TLb to the curved surfaces 12a and 12b are formed so as to intersect with each other on the rear side from the center C of the discharge tube 7 and on the front side from the outer peripheral surface of the glass bulb 4.
- each of the pair of total reflection surfaces 12a and 12b is configured by a curved surface that protrudes outward, and is a tangent line TLa and TLb that touches the start point SP of itself (curved surface).
- the tangents TLa and TLb extending from their own starting point SP on the side are behind the axial center C of the glass bulb 4 (on the side opposite to the front side with the light transmitting portion 6) and from the outer peripheral surface of the glass bulb 4 Is also formed to intersect on the front side.
- the pair of total reflection surfaces 12a and 12b are the main light beam BM that the complementary light beam BS reflected on the end point EP side passes through the vicinity of the edge of the first incident surface 10 on the other total reflection surface 12a and 12b side. It is formed to be parallel or substantially parallel.
- the exit surface 13 is the frontmost portion of the strobe device 1 (light emitting unit 2), and is formed to face the first entrance surface 10.
- a Fresnel groove is formed on the exit surface 13 in order to improve optical characteristics.
- the exit surface 13 is formed between the end points EP and EP of the pair of total reflection surfaces 12a and 12b in consideration of the mounting state (attachment state) and the like with respect to the imaging device, or ahead of the end points EP of the total reflection surfaces 12a and 12b. Or formed on the side.
- the optical member 8 considers attachment to the imaging device, and sets the fitting margin 14 for the opening formed in the frame (not shown) of the imaging device to the end points of the exit surface 13 and the total reflection surfaces 12a and 12b.
- the exit surface 13 is formed in front of the end point EP of the total reflection surfaces 12a and 12b so as to be formed between the EP and the EP. Since the optical member 8 is integrally formed as a whole, as described above, even if the fitting allowance 14 is provided, it is integrated with other portions (solid portions between the pair of total reflection surfaces 12a and 12b). (Continuous). Therefore, since the surface which reflects light is not formed between the fitting margin 14 and another part, the optical path of the light from another part is not changed.
- the holding unit 3 is configured to hold the discharge tube 7 and hold the optical member 8 in contact with the discharge tube 7.
- maintenance part 3 is fixed on the board
- the strobe device 1 is as described above. As shown in FIG. 3, when the discharge tube 7 is caused to emit light, the principal ray BM transmitted through the light transmitting portion 6 is emitted from the first incident surface 10 and the emission surface. The light is ejected forward through the surface 13 as it is. That is, since the principal ray BM transmitted through the light transmission unit 6 has an angle with respect to the optical axis BL of the strobe device 1 that is zero or small, the first transmission unit and the exit surface 13 in front of the light transmission unit 6 are used. Even if the light passes through, the front (irradiation range) is irradiated without spreading greatly.
- the complementary light beam BS emitted obliquely forward from the light transmission part 6 has a larger angle with respect to the optical axis BL of the strobe device 1 than the principal light beam BM, and therefore does not enter the first incident surface 10. It will inject into the 2nd incident surfaces 11a and 11b in the both sides. Then, the complementary light beam BS incident on the second incident surfaces 11a and 11b passes through the second incident surfaces 11a and 11b and is guided onto the total reflection surfaces 12a and 12b.
- the complementary light beam BS is refracted by incidence on the second incident surfaces 11a and 11b, and the angle of the complementary light beam BS with respect to the optical axis BL of the strobe device 1 is larger than that emitted from the light transmission part 6 of the discharge tube 7.
- the direction is changed to the optical axis BL side of the strobe device 1 due to reflection on the total reflection surfaces 12a and 12b.
- the total reflection surfaces 12a and 12b are configured by curved surfaces that increase the distance from each other toward the front from the discharge tube 7 side, and are located on the discharge tube 7 side of each curved surface.
- Two tangents TLa and TLb with respect to each curved surface having the starting point SP as a contact point are formed so as to intersect on the rear side of the center C of the discharge tube 7 and on the front side of the outer peripheral surface of the glass bulb 4. For this reason, the complementary light beam BS that has passed through the second incident surfaces 11a and 11b and is reflected by the total reflection surfaces 12a and 12b rises as the reflection position becomes closer to the discharge tube 7 (starting point SP side of the curved surface). In a state of approaching parallel to the optical axis BL of the device 1.
- the strobe device 1 efficiently emits the principal ray BM and the complementary ray BS into the irradiation range ahead, without randomly emitting the light from the discharge tube 7 outside the irradiation range. Can be made.
- the total reflection surfaces 12a and 12b allow the complementary light beam BS reflected on the end point EP side to pass through the vicinity of the edge of the first incident surface 10 on the other total reflection surface 12a and 12b side. Therefore, the complementary light beam BS is emitted into the region where the main light beam BM exists. Thereby, the whole light (primary light BM and complementary light BS) emitted from the discharge tube 7 is efficiently irradiated to the irradiation range.
- the strobe device 1 according to the present embodiment can exhibit an excellent effect that the light emitted from the discharge tube 7 can be efficiently irradiated within the irradiation range. Further, since the strobe device 1 according to the present embodiment is formed with the total reflection surfaces 12a and 12b having the above-described configuration, the gap between the pair of total reflection surfaces 12a and 12b can be reduced to the minimum necessary, and light emission Miniaturization of the whole part 2 can be achieved.
- the imaging device equipped with the strobe device 1 according to the present embodiment can efficiently irradiate the light emitted from the discharge tube 7 within the irradiation range, and thus can perform photography and video shooting well. Such an excellent effect can be achieved.
- Example 1 The inventor has confirmed the performance of the strobe device of the present invention, and has confirmed that it exhibits excellent performance.
- the strobe device 1 according to the first example of the present invention is the same as that described in the above embodiment, and the outer diameter of the glass bulb 4 is 1.3 mm as the discharge tube 7.
- the inner diameter of the glass bulb 4 is set to 0.85 mm, and the reflective film 5 is formed in a range of 250 ° around the axis C of the glass bulb 4 (the light transmitting portion 6 is the axis of the glass bulb 4).
- a flash discharge tube formed in a range of 110 ° with the center C as the center was employed.
- the optical member 8 is made of acrylic resin (refractive index of about 1.49 with respect to the d line).
- the irradiation angle of the strobe device 1 according to the first example was set to a range of 27 ° on both sides with respect to the optical axis BL (all range 54 °: equivalent to 28 mm in terms of a 35 mm plate lens).
- each of the pair of total reflection surfaces 12a and 12b is configured by curved surfaces that increase the distance from each other toward the front from the discharge tube 7 side, and the starting point of each curved surface on the discharge tube 7 side. Two tangents (not shown) with respect to each curved surface extending from the SP intersect with each other on the rear side of the center C of the discharge tube 7 and on the front side of the outer peripheral surface of the glass bulb 4.
- the strobe device 1 according to the first comparative example to be compared with the first embodiment employs the same discharge tube 7 as the first embodiment as shown in FIG.
- the conditions of the incident surface 10 and the second incident surfaces 11a and 11b are set to be the same as those in the first embodiment.
- Each of the pair of total reflection surfaces 12a and 12b is configured by curved surfaces that increase the distance from each other toward the front from the discharge tube 7 side, and is in contact with the starting point SP on the discharge tube 7 side of each curved surface. Are formed such that two tangent lines (not shown) intersect with the front side of the center C of the discharge tube 7.
- the strobe device 1 according to the second comparative example to be compared with the first embodiment employs the same discharge tube 7 as that of the first embodiment as shown in FIG. 10 and the conditions of the second incident surfaces 11a and 11b are set to be the same as those in the first embodiment.
- Each of the pair of total reflection surfaces 12a and 12b is configured by curved surfaces that increase the distance from each other toward the front from the discharge tube 7 side, and is in contact with the starting point SP on the discharge tube 7 side of each curved surface.
- Two tangent lines (not shown) are formed so as to intersect behind the outer peripheral surface of the glass bulb 4.
- the discharge tube 7 of each strobe device 1 of the first example, the first comparative example, and the second comparative example was caused to emit light under the same conditions.
- the principal ray BM (indicated by a broken line in the figure) incident on the first incident surface 10 by the refractive index of the optical member 8 is relative to the optical axis BL.
- the light beam passes through the optical member 8 and exits from the exit surface 13 as a light beam having a slightly smaller angle
- the light beam becomes a light beam having a slightly larger angle with respect to the optical axis BL due to the difference in refractive index. Is irradiated.
- the complementary light beam BS incident near the edge of the first incident surface 10 is about 27 ° with respect to the optical axis BL, and the irradiation angle of the strobe device 1 is 54 °.
- each total reflection surface 12a, 12b is curved surfaces that protrude outward, the direction of the tangent to the total reflection surfaces 12a and 12b is different at any point from the start point SP to the end point EP.
- the tangent line on the starting point SP on the discharge tube 7 side of each total reflection surface 12a, 12b intersects behind the axis C of the discharge tube 7 and ahead of the outer peripheral surface of the glass bulb 4 of the discharge tube 7. Thus, total reflection surfaces 12a and 12b are formed.
- the shape of the total reflection surfaces 12a and 12b in the vicinity of the start point SP on the start point SP side has a curvature / shape that reflects the complementary light rays from the second incident surfaces 11a and 11b in a direction substantially parallel to the optical axis. It has a reflective surface.
- the complementary light beam (shown by a two-dot chain line in the figure) reflected near the start point SP of the total reflection surfaces 12a and 12b is reflected so as to be substantially parallel to the optical axis BL. It becomes a light beam irradiated to the central region.
- the complementary light beam BS reflected in the region (reflection surface) between the start point SP and the end point EP of the total reflection surfaces 12a and 12b is reflected so as to intersect the optical axis BL, and is reflected as it approaches the end point EP side.
- the complementary light beam BS is parallel or substantially parallel to the principal light beam BM that has passed through the vicinity of the edge of the first incident surface 10 on the other side of the other total reflection surfaces 12a and 12b.
- the strobe device 1 can collect the main light beam BM and the complementary light beam BS within the irradiation range, and emit a high amount of light in a wide range within the irradiation range.
- the strobe device 1 has a peripheral portion (optical axis) when the light quantity in the central region of the irradiation range (around 10 ° on both sides with respect to the optical axis BL) is 100%.
- the light intensity drop from the central portion can be suppressed to about 15%, that is, about 0.3 EV, and it was confirmed that substantially uniform light distribution is possible.
- the intersection of two tangent lines that contact the starting point SP on the discharge tube 7 side of each total reflection surface 12a, 12b is the discharge tube. Since the total reflection surfaces 12a and 12b are formed so as to be located on the front side from the center C of FIG. 7, the angle of the tangent to the optical axis BL increases. That is, the total reflection surfaces 12a and 12b of the strobe device 1 according to the first comparative example are curves opened with respect to the optical axis BL on the start point SP side.
- the curvatures of the total reflection surfaces 12a and 12b must be increased, and the curve near the start point SP is also completely curved.
- the interval between the reflecting surfaces 12a and 12b must be set to be within the irradiation angle.
- the total reflection surfaces 12a and 12b are formed with curved surfaces having a larger curvature than the strobe device 1 of the first embodiment, and the end points of the total reflection surfaces 12a and 12b. EP is large and located in front.
- the strobe device 1 of the first comparative example is also in a mode (a mode in which the exit surface 13 is formed between the end points of the total reflection surfaces 12a and 12b) in which the fitting allowance 14 in the above embodiment is omitted. Regardless, the entire optical member 8 is enlarged.
- the complementary light beam BS is an optical member. 8 is reflected in the outward direction.
- the complementary light beam BS reflected near the start point SP of the total reflection surfaces 12a and 12b is reflected again on the end point EP side of the total reflection surfaces 12a and 12b.
- the complementary light beam BS is finally irradiated onto the irradiation range, but the light quantity of the complementary light beam BS is reduced by repeating the reflection at the total reflection surfaces 12a and 12b a plurality of times.
- reflection on the total reflection surfaces 12a and 12b is repeated between the start point SP and the end point EP of the total reflection surfaces 12a and 12b, and the light amount of the complementary light beam BS is increased. It will decline.
- the strobe device 1 by repeating reflection on the total reflection surfaces 12a and 12b, it becomes difficult for many complementary light beams BS to enter the optical path through which the main light beam BM passes, and the total reflection surfaces 12a and 12b.
- the complementary light beam BS reflected near the end point EP is emitted to the center side (optical axis BL side).
- the complementary light beam BS reflected in the vicinity of the end point EP of the total reflection surfaces 12a and 12b gathers at the center of the irradiation range, while many other complementary light beams BS are irradiated to areas outside the irradiation range.
- the complementary light beams BS reflected near the end point EP of the total reflection surfaces 12a and 12b are gathered in the irradiation range irradiated with the principal light beam BM. It was confirmed that the amount of light only in the central part increased, and uniform light distribution within the irradiation range was not possible.
- the strobe device 1 according to the second comparative example as shown in FIG. 4C, two tangent lines extending from the start point SP on the discharge tube 7 side of each total reflection surface 12 a, 12 b are from the outer peripheral surface of the glass bulb 4. Since the total reflection surfaces 12a and 12b are formed so as to intersect at the rear, the angle of the tangent to the optical axis BL is reduced, and the vicinity of the start point SP of the total reflection surfaces 12a and 12b is raised. As a result, in the strobe device 1 of the second comparative example, the distance between the pair of total reflection surfaces 12a and 12b becomes too narrow, and the incident angle of the complementary light beam BS from the discharge tube 7 becomes unnecessarily small.
- the strobe device 1 according to the second comparative example although the complementary light beam BS reflected by the total reflection surfaces 12a and 12b passes through the optical path of the principal light beam BM, the strobe device 1 is largely inclined toward the optical axis BL side. As a result, the strobe device 1 according to the second comparative example has fewer components reflected substantially parallel to the optical axis BL than the strobe device 1 of the first embodiment, and the complement emitted from the exit surface 13 is complementary.
- the light beam BS crosses the optical axis BL before reaching the subject (at a position close to the exit surface 13).
- the complementary rays BS gather around the central portion of the irradiation range irradiated with the principal ray BM, and as shown in FIG. 5C, at the central portion of the irradiation range. It was confirmed that the amount of light was reduced and uniform light distribution within the irradiation range was not possible.
- the strobe device 1 according to the first example of the present invention can exhibit performance superior to that of the strobe device 1 according to the first comparative example and the second comparative example.
- Example 2 The inventor also confirmed the performance of the strobe device 1 with a wide irradiation angle.
- the strobe device 1 according to the second example of the present invention has been described in the above embodiment as shown in FIG. 6A, and the discharge tube 7 has a glass bulb 4 having an outer diameter of 1.3 mm.
- the inner diameter of the glass bulb 4 is set to 0.85 mm, and the reflective film 5 is formed in a range of 250 ° around the axis C of the glass bulb 4 (the light transmitting portion 6 is the axis of the glass bulb 4).
- a flash discharge tube formed in a range of 110 ° with the center C as the center was employed.
- the optical member 8 is made of acrylic resin (refractive index of about 1.49 at the d-line).
- the irradiation angle of the strobe device 1 according to the second example was set to a range of 30 ° on both sides with respect to the optical axis BL (total range 60 °: equivalent to 24 mm in terms of a 35 mm plate lens).
- the radius of curvature of the first incident surface 10 was set to 5 mm. Moreover, since it is necessary to consider the refractive index of the optical member 8 in order to set the irradiation angle to 60 °, the inclination angles of the second incident surfaces 11a and 11b are set to 3 ° with respect to the optical axis BL.
- each of the pair of total reflection surfaces 12a and 12b is configured by curved surfaces that increase the distance from each other toward the front from the discharge tube 7 side, and the starting point of each curved surface on the discharge tube 7 side.
- Two tangents (not shown) with respect to each curved surface extending from the SP intersect with each other on the rear side of the center C of the discharge tube 7 and on the front side of the outer peripheral surface of the glass bulb 4.
- the strobe device 1 according to the third comparative example to be compared with the second embodiment employs the same discharge tube 7 as that of the second embodiment, and the first embodiment.
- the conditions of the incident surface 10 and the second incident surfaces 11a and 11b are set to be the same as in the second embodiment.
- Each of the pair of total reflection surfaces 12a and 12b is configured by curved surfaces that increase the distance from each other toward the front from the discharge tube 7 side, and for each curved surface extending from the starting point SP on the discharge tube 7 side of each curved surface.
- Two tangent lines (not shown) are formed so as to intersect with the front side of the center C of the discharge tube 7.
- the strobe device 1 according to the fourth comparative example to be compared with the second embodiment employs the same discharge tube 7 as that of the second embodiment, and the first incident surface. 10 and the conditions of the second incident surfaces 11a and 11b are set to be the same as those in the second embodiment.
- Each of the pair of total reflection surfaces 12a and 12b is configured by curved surfaces that increase the distance from each other toward the front from the discharge tube 7 side, and for each curved surface extending from the starting point SP on the discharge tube 7 side of each curved surface. Two tangents (not shown) are formed so as to intersect behind the outer peripheral surface of the glass bulb 4.
- the strobe device 1 according to the second example is shown in FIG. 6A.
- the principal ray BM (indicated by a broken line in the figure) incident on the first incident surface 10 due to the refractive index of the optical member 8 passes through the optical member 8 as a light beam having a slightly smaller angle with respect to the optical axis BL.
- the light exits from the exit surface 13 it is irradiated again to the outside (irradiation range) as a light beam having a slightly larger angle with respect to the optical axis BL due to the difference in refractive index.
- the complementary light beam BS incident near the edge of the first incident surface 10 is about 30 ° with respect to the optical axis BL, and the irradiation angle of the strobe device 1 is 60 °.
- the total reflection surfaces 12a and 12b are curved surfaces that protrude outward, the direction of the tangent to the total reflection surfaces 12a and 12b is different at any point from the start point SP to the end point EP. Tangent lines on the starting point SP on the discharge tube 7 side of the total reflection surfaces 12a and 12b intersect on the rear side of the axis C of the discharge tube 7 and on the front side of the outer peripheral surface of the glass bulb 4 of the discharge tube 7. Thus, the total reflection surfaces 12a and 12b are formed.
- the shape of the total reflection surfaces 12a, 12b in the vicinity of the start point SP on the start point SP side is such that the complementary light rays from the second incident surfaces 11a, 11b are reflected in a direction substantially parallel to the optical axis.
- a reflective surface with a shape is such that the shape of the total reflection surfaces 12a, 12b in the vicinity of the start point SP on the start point SP side.
- the complementary light beam (shown by a two-dot chain line in the figure) reflected near the start point SP of the total reflection surfaces 12a and 12b is reflected so as to be substantially parallel to the optical axis BL. It becomes a light beam irradiated to the central region.
- the complementary light beam BS reflected in the region (reflection surface) between the start point SP and the end point EP of the total reflection surfaces 12a and 12b is reflected so as to intersect the optical axis BL, and is reflected as it approaches the end point EP side.
- the complementary light beam BS is parallel or substantially parallel to the principal light beam BM that has passed through the vicinity of the edge of the first incident surface 10 on the other side of the other total reflection surfaces 12a and 12b.
- the strobe device 1 can collect the main light beam BM and the complementary light beam BS within the irradiation range and irradiate with a high amount of light in a wide range within the irradiation range.
- the strobe device 1 has a peripheral portion (optical axis) when the light quantity in the central region of the irradiation range (near 10 ° on both sides with respect to the optical axis BL) is 100%.
- the light amount decrease from the central portion can be suppressed to about 20%, that is, about ⁇ 0.3 EV, and it was confirmed that substantially uniform light distribution was possible.
- the intersection P between two tangent lines extending from the starting point SP on the discharge tube 7 side of each total reflection surface 12a, 12b is the discharge. Since the total reflection surfaces 12a and 12b are formed so as to be located in front of the center C of the tube 7, the angle of the tangent to the optical axis BL is increased. That is, the total reflection surfaces 12a and 12b of the strobe device 1 according to the third comparative example are curves opened with respect to the optical axis BL on the start point SP side.
- the curvatures of the total reflection surfaces 12a and 12b must be increased, and the curve near the start point SP is also completely curved.
- the interval between the reflecting surfaces 12a and 12b must be set to be within the irradiation angle.
- the total reflection surfaces 12a and 12b are formed with curved surfaces having a larger curvature than the strobe device 1 of the second embodiment, and the end points of the total reflection surfaces 12a and 12b. EP is large and located in front.
- the strobe device 1 of the first comparative example is also in a mode (a mode in which the exit surface 13 is formed between the end points of the total reflection surfaces 12a and 12b) in which the fitting allowance 14 in the above embodiment is omitted. Regardless, the entire optical member 8 is enlarged.
- the complementary light beam BS becomes an optical member. 8 is reflected in the outward direction. Therefore, the complementary ray BS reflected near the start point SP of the total reflection surfaces 12a and 12b is reflected again on the end point EP side of the total reflection surfaces 12a and 12b. As a result, the complementary light beam BS is finally irradiated onto the irradiation range, but the light quantity of the complementary light beam BS is reduced by repeating the reflection at the total reflection surfaces 12a and 12b a plurality of times.
- reflection on the total reflection surfaces 12a and 12b is repeated between the start point SP and the end point EP of the total reflection surfaces 12a and 12b, and the amount of the complementary light beam BS is reduced. It will decline.
- the strobe device 1 by repeating reflection on the total reflection surfaces 12a and 12b, it becomes difficult for many complementary light beams BS to enter the optical path through which the main light beam BM passes, and the total reflection surfaces 12a and 12b.
- the complementary light beam BS reflected near the end point EP is emitted to the center side (optical axis BL side).
- the complementary light beam BS reflected in the vicinity of the end point EP of the total reflection surfaces 12a and 12b gathers at the center of the irradiation range, while many other complementary light beams BS are irradiated to areas outside the irradiation range.
- the complementary light beams BS reflected in the vicinity of the end point EP of the total reflection surfaces 12a and 12b are collected in the irradiation range irradiated with the principal light beam BM. It was confirmed that the amount of light only in the central part increased, and uniform light distribution within the irradiation range was not possible.
- two tangent lines extending from the start point SP on the discharge tube 7 side of each total reflection surface 12 a, 12 b are from the outer peripheral surface of the glass bulb 4. Are formed so as to intersect at the rear, the angle of the tangent to the optical axis BL is reduced, and the vicinity of the start point SP of the total reflection surfaces 12a and 12b is raised. As a result, in the strobe device 1 of the fourth comparative example, the distance between the pair of total reflection surfaces 12a and 12b becomes too narrow, and the incident angle of the complementary light beam BS from the discharge tube 7 becomes smaller than necessary.
- the strobe device 1 although the complementary light beam BS reflected by the total reflection surfaces 12a and 12b passes through the optical path of the principal light beam BM, the strobe device 1 is greatly inclined toward the optical axis BL side.
- the strobe device 1 according to the fourth comparative example was emitted from the exit surface 13 as a result of fewer components reflected substantially parallel to the optical axis BL than the strobe device 1 of the second embodiment.
- the complementary light beam BS reaches the subject (at a position close to the exit surface 13), it intersects the optical axis BL.
- the complementary light beam BS gathers around the central portion of the irradiation range irradiated with the principal light beam BM, and the central portion of the irradiation range. It was confirmed that the amount of light was reduced and uniform light distribution within the irradiation range was not possible.
- the strobe device 1 according to the second embodiment of the present invention can exhibit performance superior to that of the strobe device 1 according to the third comparative example and the fourth comparative example. That is, it was confirmed that the strobe device 1 according to the present invention can exhibit excellent performance even when the irradiation range is wide.
- FIG. 8 shows a front view of a digital camera as an embodiment of the imaging device 17.
- the imaging device 17 includes an imaging device body 18, an imaging lens 19, a shooting start button 20, and a strobe device 1 mounted on the imaging device body 18.
- a shooting start button 20 disposed on the imaging device main body 18 is pressed, a predetermined amount of flash is emitted from the flash device 1 toward a subject (not shown), and at the same time, the imaging device 19 is applied to the imaging device.
- a subject image with high brightness is captured.
- the imaging device 17 of the present invention can efficiently irradiate the range in which flash light is desired to be emitted, so that a high-quality subject image can be captured.
- FIG. 9 shows an external configuration of a camera-equipped mobile phone as another embodiment of the imaging device 17.
- the imaging device 17 further includes a camera button 21 for switching the camera-equipped mobile phone to the camera mode, and an LCD display unit 22 for displaying and confirming a subject to be photographed.
- the imaging lens 19 and the strobe device 1 are installed on the back side of the LCD display unit 22, and shooting is started when a shooting start button 20 having a function for selecting and selecting various menus is pressed.
- the strobe device according to the present invention can be easily miniaturized, and can be used by being mounted on a mobile device such as a camera-equipped mobile phone.
- the strobe device and the imaging device according to the present invention are not limited to the above-described embodiments and examples, and can be appropriately changed without departing from the gist of the present invention.
- the present invention is not limited to this, and the strobe device 1 is configured separately from the imaging device and attached to the imaging device as necessary. Of course, it can be used. Further, in the above-described embodiment, the description has been made with respect to an imaging apparatus such as a digital camera, an analog camera, and a video camera.
- the Fresnel groove is provided on the exit surface 13 of the optical member 8.
- the present invention is not limited to this, and the exit surface 13 may be formed in a flat shape according to the performance of the strobe device 1.
- a groove may be formed.
- the exit surface 13 of the optical member 8 is formed in front of the end point EP of the total reflection surfaces 12a and 12b.
- the present invention is not limited to this. If it can maintain in the state arrange
- the complementary light beam BS reflected on the end point EP side of the total reflection surfaces 12a and 12b passes through the vicinity of the edge of the first incident surface 10 on the other total reflection surface 12a and 12b side.
- the total reflection surfaces 12a and 12b are formed so as to be parallel or substantially parallel to each other.
- the present invention is not limited to this.
- the complementary light beam BS reflected on the end point EP side of the total reflection surfaces 12a and 12b may be formed so as to be parallel or substantially parallel to the optical axis BL of the strobe device 1.
- the optical member 8 is formed of an acrylic resin.
- the optical member 8 is not limited to this, and may be formed of other resins that can transmit light in consideration of the refractive index of light. It may be made of glass.
- the strobe device and the imaging device according to the present invention have an effect that the light emitted from the discharge tube can be efficiently irradiated within the irradiation range. Therefore, the discharge tube in which a reflection film is formed on the outer peripheral surface of the glass bulb, and the discharge The present invention is useful as a strobe device including an optical member disposed in front of a tube or an imaging device including the strobe device.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Stroboscope Apparatuses (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
Description
発明者は、本発明のストロボ装置の性能を確認したところ、優れた性能を発揮することを確認できた。具体的には、図4Aに示す如く、本発明の第一実施例に係るストロボ装置1は、上記実施形態で説明したもので、放電管7として、ガラスバルブ4の外径が1.3mmに設定されるとともに、ガラスバルブ4の内径が0.85mmに設定され、反射膜5がガラスバルブ4の軸心Cを中心にして250°の範囲で形成(光透過部6がガラスバルブ4の軸心Cを中心にして110°の範囲で形成)された閃光放電管を採用した。そして、光学部材8は、アクリル樹脂製のもの(d線に対する屈折率1.49程度)を採用した。そして、第一実施例に係るストロボ装置1の照射角度は、光軸BLに対して両側27°の範囲(全範囲54°:35mm版レンズに換算して、28mm相当)に設定した。
また、発明者は、照射角度を広角にしたストロボ装置1についても性能を確認した。具体的には、本発明の第二実施例に係るストロボ装置1は、図6Aに示す如く、上記実施形態で説明したもので、放電管7として、ガラスバルブ4の外径が1.3mmに設定されるとともに、ガラスバルブ4の内径が0.85mmに設定され、反射膜5がガラスバルブ4の軸心Cを中心にして250°の範囲で形成(光透過部6がガラスバルブ4の軸心Cを中心にして110°の範囲で形成)された閃光放電管を採用した。そして、光学部材8は、アクリル樹脂製のもの(d線における屈折率1.49程度)を採用した。そして、第二実施例に係るストロボ装置1の照射角度は、光軸BLに対して両側30°の範囲(全範囲60°:35mm版レンズに換算して、24mm相当)に設定した。
2 発光部
3 保持部
4 ガラスバルブ
5 反射膜
6 光透過部
7 放電管
8 光学部材
9a,9b 電極端子
10 第一入射面
11a,11b 第二入射面
12a,12b 全反射面
13 射出面
14 嵌合代
15 接続金具
16 基板
17 撮像装置
18 撮像装置本体
19 撮像レンズ
20 撮影開始ボタン
21 カメラボタン
22 LCD表示部
BL 光軸
BM 主光線
BS 補完光線
C 軸心(中心)
SP 始点
EP 終点
P 交点
TLa,TLb 接線
Claims (3)
- 円筒状のガラスバルブの外周面に反射膜が形成されるとともに前記ガラスバルブの外周面の前面側に反射膜の非形成領域からなる光透過部が形成された放電管と、前記光透過部の前方に配置される光学部材とを備えたストロボ装置であって、前記光学部材は、前記放電管の前記光透過部の前方で前記光透過部と対向するように形成され、前記光透過部から前方に向けて放射された主光線を入射させる第一入射面と、前記放電管の軸心と直交する方向に間隔をあけて前記放電管側から前記第一入射面側に延びるように形成され、前記放電管の前記光透過部から斜め前方に放射した補完光線を入射させる一対の第二入射面と、前記放電管の軸心と直交する方向に間隔をあけて前記第二入射面よりも外側で前方に向けて延びるように形成され、前記第二入射面からの補完光線を前方に全反射させる一対の全反射面と、前記第一入射面の前方に形成され、主光線と補完光線を外部に射出させる射出面とを有し、一対の前記全反射面のそれぞれは、前記放電管側から前方に向かうにつれて互いの間隔を拡大させる曲面で構成されるとともに、各曲面の前記放電管側にある始点を接点とする各曲面に対する二つの接線の交点が、前記放電管の中心より後方側で且つ前記ガラスバルブの外周面よりも前方側になるように形成されているストロボ装置。
- 各前記全反射面は、終点側で反射した補完光線が、相手方の前記全反射面側にある前記第一入射面の端縁近傍を通過した主光線と平行又は略平行になるように形成されている請求項1に記載のストロボ装置。
- 請求項1又は2に記載のストロボ装置を備えている撮像装置。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/510,074 US8517561B2 (en) | 2009-12-16 | 2010-11-16 | Strobe device and imaging device |
EP10837222.8A EP2515165A4 (en) | 2009-12-16 | 2010-11-22 | STROBOSCOPE DEVICE AND PICTURE DEVICE |
CN201080056622.6A CN102656512B (zh) | 2009-12-16 | 2010-11-22 | 闪光灯装置及摄像装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2009-284702 | 2009-12-16 | ||
JP2009284702A JP5454119B2 (ja) | 2009-12-16 | 2009-12-16 | ストロボ装置、及び撮像装置 |
Publications (1)
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WO2011074185A1 true WO2011074185A1 (ja) | 2011-06-23 |
Family
ID=44166960
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Application Number | Title | Priority Date | Filing Date |
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PCT/JP2010/006822 WO2011074185A1 (ja) | 2009-12-16 | 2010-11-22 | ストロボ装置、及び撮像装置 |
Country Status (6)
Country | Link |
---|---|
US (1) | US8517561B2 (ja) |
EP (1) | EP2515165A4 (ja) |
JP (1) | JP5454119B2 (ja) |
KR (1) | KR20120094494A (ja) |
CN (1) | CN102656512B (ja) |
WO (1) | WO2011074185A1 (ja) |
Cited By (1)
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CN103775967A (zh) * | 2012-10-23 | 2014-05-07 | 欧司朗股份有限公司 | 透镜以及led改型灯 |
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US9109775B2 (en) * | 2011-12-16 | 2015-08-18 | Fortress Iron, Lp | Accent lighting system for decks, patios and indoor/outdoor spaces |
DE102013105105B3 (de) * | 2013-05-17 | 2014-11-06 | Sick Ag | 3D-Kamera mit mindestens einer Beleuchtungsvorrichtung |
CN104214685A (zh) * | 2013-05-29 | 2014-12-17 | 海洋王(东莞)照明科技有限公司 | Led导航灯及其配光透镜 |
US11388804B2 (en) * | 2018-09-13 | 2022-07-12 | Signify Holding B.V. | Dynamic sparkling lighting device |
KR102303322B1 (ko) | 2019-12-13 | 2021-09-24 | 고려대학교 세종산학협력단 | 약산성 및 중성 pH 범위의 실리카 합성 펩타이드 |
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-
2010
- 2010-11-16 US US13/510,074 patent/US8517561B2/en not_active Expired - Fee Related
- 2010-11-22 WO PCT/JP2010/006822 patent/WO2011074185A1/ja active Application Filing
- 2010-11-22 CN CN201080056622.6A patent/CN102656512B/zh not_active Expired - Fee Related
- 2010-11-22 KR KR1020127015461A patent/KR20120094494A/ko not_active Application Discontinuation
- 2010-11-22 EP EP10837222.8A patent/EP2515165A4/en not_active Withdrawn
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Also Published As
Publication number | Publication date |
---|---|
CN102656512B (zh) | 2015-05-13 |
US8517561B2 (en) | 2013-08-27 |
EP2515165A4 (en) | 2013-08-28 |
CN102656512A (zh) | 2012-09-05 |
EP2515165A1 (en) | 2012-10-24 |
JP5454119B2 (ja) | 2014-03-26 |
US20120257372A1 (en) | 2012-10-11 |
KR20120094494A (ko) | 2012-08-24 |
JP2011128240A (ja) | 2011-06-30 |
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