JP5044385B2 - Strobe device - Google Patents

Description

  The present invention comprises a light source, a reflector having an elliptical reflecting surface for reflecting light emitted from the light source, and a convex lens for condensing light from the light source and / or light from the reflector, The present invention relates to a strobe device in which a light source is arranged in the vicinity of a first focal point of an elliptical reflecting surface of a reflector.

  More specifically, the present invention relates to a strobe device that can reduce the incident angle of light incident on the incident surface of a convex lens while reducing the front-rear direction dimension (depth dimension) of the entire strobe device.

  Conventionally, a light source, a reflector having an elliptical reflecting surface for reflecting light emitted from the light source, and a convex lens for condensing the reflected light from the reflector, the elliptical reflecting surface of the reflector is provided. There is known an illumination device in which a light source is arranged in the vicinity of a first focus. As an example of this type of illumination device, for example, there is one described in FIG. 1 of JP-A-5-40223.

  In the illuminating device described in FIG. 1 of JP-A-5-40223, the second focal point of the elliptical reflecting surface of the reflector is disposed on the front side of the light source. Specifically, the second focal point of the elliptical reflecting surface of the reflector is disposed between the light source and the convex lens.

  That is, in the illuminating device described in FIG. 1 of JP-A-5-40223, a part of the light emitted from the light source is reflected by the elliptical reflecting surface of the reflector, and the second focal point of the elliptical reflecting surface. The light is condensed. Next, the light traveling while spreading from the second focal point is condensed by the convex lens and irradiated in the irradiation direction of the illumination device.

  Specifically, in the illumination device described in FIG. 1 of JP-A-5-40223, in order to improve the utilization efficiency of the light emitted from the light source, the elliptical reflection surface of the reflector is provided only on the rear side of the light source. It is also arranged on the front side of the light source.

  By the way, in order to reduce the front-rear direction dimension (depth dimension) of the entire strobe device by applying the illumination device described in FIG. 1 of JP-A-5-40223 to the strobe device, the elliptical reflecting surface of the reflector is reduced. It is conceivable to reduce the distance between the first focus and the second focus.

  However, when the distance between the first focal point and the second focal point of the elliptical reflecting surface of the reflector is reduced, the reflected light from the portion of the elliptical reflecting surface of the reflector that is in front of the light source enters the incident surface of the convex lens. As a result, the incident angle increases, and as a result, the possibility that the reflected light from the front part of the elliptical reflecting surface of the reflector is totally reflected on the incident surface of the convex lens increases.

  In other words, in order to reduce the front-rear direction dimension (depth dimension) of the entire strobe device, if an attempt is made to reduce the distance between the first focal point and the second focal point of the elliptical reflecting surface of the reflector, the light emitted from the light source is reduced. There is a risk that the utilization efficiency may be reduced.

FIG. 1 of JP-A-5-40223

  In view of the above problems, the present invention provides a strobe device that can reduce the incident angle of light incident on the incident surface of a convex lens while reducing the front-rear direction dimension (depth dimension) of the entire strobe device. Objective.

  Specifically, the present invention reduces the front-rear direction dimension (depth dimension) of the entire strobe device and reduces the incident angle of light incident on the incident surface of the convex lens, thereby making it possible to use the light emitted from the light source. It is an object of the present invention to provide a strobe device capable of improving the above.

  Furthermore, according to the present invention, the vertical dimension of the convex lens can be reduced by reducing the incident angle of light incident on the incident surface of the convex lens while reducing the longitudinal dimension (depth dimension) of the entire strobe device. An object of the present invention is to provide a strobe device that can be used.

  According to the first aspect of the present invention, the light source, the first reflector having the elliptical reflecting surface for reflecting the light emitted from the light source, the light from the light source and / or the light from the first reflector are used. A strobe device having a convex lens for condensing and having a light source disposed in the vicinity of the first focal point of the elliptical reflecting surface of the first reflector, wherein at least a part of the elliptical reflecting surface of the first reflector is positioned at the center of the light source The second reflector of the elliptical reflecting surface of the first reflector is arranged behind the light source, and the elliptical reflection of the first reflector advances toward the second focal point behind the light source. A strobe device is provided that includes a second reflector for reflecting light reflected from a surface and making it incident on a convex lens on the front side of the light source.

  According to the second aspect of the present invention, a tubular light source extending in the left-right direction is used as the light source, and light emitted from the light source to the rear side of the light source is returned to the vicinity of the central axis of the tubular light source. The strobe device according to claim 1, wherein a third reflector having a semi-cylindrical reflecting surface is disposed on the rear side of the light source, and the vertical dimension of the third reflector is smaller than the vertical dimension of the convex lens. Provided.

  According to the third aspect of the present invention, the elliptical reflecting surface of the first reflector is configured by sweeping the shape in the vertical section parallel to the front-rear direction in the left-right direction, and the shape in the vertical section parallel to the front-rear direction is set. The strobe according to claim 2, wherein the convex lens is configured by sweeping the shape in the left-right direction, and the second reflector is configured by sweeping the shape in a vertical section parallel to the front-rear direction in the left-right direction. An apparatus is provided.

  According to the fourth aspect of the present invention, the central axis of the tubular light source is emitted by the light emitted from the light source to the front side of the light source and from the light source to the rear side of the light source by the semi-cylindrical reflecting surface of the third reflector. An inner lens is disposed between the light source and the convex lens so that light that is not incident on the ellipsoidal reflecting surface of the first reflector among the light returned to the vicinity of the first reflector is placed between the light source and the convex lens, and in a vertical section parallel to the front-rear direction. The strobe device according to claim 3, wherein an inner lens is configured by sweeping the shape of the lens in the horizontal direction.

  According to the fifth aspect of the present invention, the elliptical reflection of the first reflector is performed by arranging a plurality of substantially spheroidal surfaces obtained by rotating the elliptical arc around the horizontal axis extending in the front-rear direction. A convex lens is formed by arranging a plurality of rotating bodies in the left-right direction, which are formed by rotating a curved line and / or a straight line about a horizontal axis extending in the front-rear direction. 2 is provided.

  According to the invention described in claim 6, the central axis of the tubular light source is emitted by the light emitted from the light source to the front side of the light source and from the light source to the rear side of the light source and by the semi-cylindrical reflecting surface of the third reflector. 6. An inner lens is disposed between the light source and the convex lens for allowing the light that is not incident on the elliptical reflecting surface of the first reflector among the light returned to the vicinity of the first reflector to be incident on the convex lens. A strobe device as described is provided.

  In the strobe device according to the first aspect, the first reflector having the elliptical reflecting surface for reflecting the light emitted from the light source is provided. Specifically, at least a part of the elliptical reflective surface of the first reflector is disposed in front of the center of the light source. A light source is disposed in the vicinity of the first focal point of the elliptical reflecting surface of the first reflector, and a second focal point of the elliptical reflecting surface of the first reflector is disposed behind the light source.

  In the strobe device according to the first aspect, a convex lens for condensing light from the light source and / or light from the first reflector is provided. Further, a second reflector is provided for reflecting the reflected light from the elliptical reflecting surface of the first reflector that travels toward the second focal point on the rear side of the light source, and to enter the convex lens on the front side of the light source.

  Specifically, in the strobe device according to claim 1, light emitted from the light source and reflected by the elliptical reflecting surface of the first reflector travels toward the second focal point behind the light source, and then It is reflected by the second reflector, then enters the convex lens on the front side of the light source, and is then irradiated within the angle of view of the strobe device.

  That is, in the strobe device according to claim 1, the light emitted from the light source and reflected by the elliptical reflecting surface of the first reflector is like the illumination device shown in FIG. 1 of Japanese Patent Laid-Open No. 5-40223. Instead of being directly incident on the convex lens on the front side of the light source, the light is incident on the convex lens on the front side of the light source after being reflected by the second reflector.

  Therefore, according to the strobe device described in claim 1, the illumination device described in FIG. 1 of Japanese Patent Laid-Open No. 5-40223 in which reflected light from the elliptical reflecting surface of the reflector is directly incident on the convex lens on the front side of the light source. The incident angle of light incident on the convex lens can be made smaller.

  That is, according to the strobe device of the first aspect, by reducing the incident angle of the light incident on the convex lens, it is possible to reduce the possibility that the light incident on the convex lens is totally reflected on the incident surface of the convex lens. Thus, the utilization efficiency of the light emitted from the light source can be improved.

  In other words, according to the strobe device of the first aspect, the light source and the convex lens are disposed close to each other, and the front and rear direction dimension (depth dimension) of the entire strobe device is reduced, and the light enters the incident surface of the convex lens. By reducing the incident angle of the light to be used, the utilization efficiency of the light emitted from the light source can be improved.

  Furthermore, according to the strobe device of the first aspect, the light incident on the incident surface of the convex lens while minimizing the longitudinal dimension (depth dimension) of the entire strobe device by arranging the light source and the convex lens close to each other. By reducing the incident angle, the vertical dimension of the convex lens can be reduced.

  In the strobe device according to the second aspect, a tubular light source extending in the left-right direction is used as the light source. In addition, a third reflector having a semi-cylindrical reflecting surface for returning the light emitted from the light source to the rear side of the light source to the vicinity of the central axis of the tubular light source is disposed on the rear side of the light source.

  Specifically, in the strobe device according to claim 2, a part of the light emitted from the light source to the rear side of the light source is returned to the vicinity of the central axis of the tubular light source by the semi-cylindrical reflecting surface of the third reflector. Then, the light is irradiated within the angle of view of the strobe device through the elliptical reflecting surface of the first reflector, the second reflector, and the convex lens.

  Alternatively, in the strobe device according to claim 2, a part of the light emitted from the light source to the rear side of the light source is returned to the vicinity of the central axis of the tubular light source by the semi-cylindrical reflecting surface of the third reflector, Next, the light is irradiated through the convex lens within the angle of view of the strobe device.

  Therefore, according to the strobe device of claim 2, the use efficiency of the light emitted from the light source is improved as compared with the case where the light emitted from the light source to the rear side of the light source is not irradiated within the angle of view of the strobe device. Can be made.

  Furthermore, in the strobe device according to claim 2, the reflecting surface of the third reflector disposed on the rear side of the light source is formed by a semi-cylindrical reflecting surface, and the vertical dimension of the third reflector is larger than the vertical dimension of the convex lens. It is also small. As a result, in the strobe device according to the second aspect, the amount by which the semi-cylindrical reflecting surface of the third reflector protrudes to the rear side of the tubular light source is suppressed to be small. Therefore, according to the strobe device described in claim 2, compared with the strobe device configured like the illumination device described in FIG. 1 of JP-A-5-40223, the strobe device is located behind the light source. The part which protrudes to the side can be made small.

  In the strobe device according to the third aspect, the elliptical reflecting surface of the first reflector is configured by sweeping the shape in the vertical cross section parallel to the front-rear direction in the left-right direction. Further, the convex lens is configured by sweeping the shape in the vertical cross section parallel to the front-rear direction in the left-right direction. Furthermore, the 2nd reflector is comprised by sweeping the shape in the vertical cross section parallel to the front-back direction to the left-right direction. Therefore, according to the strobe device of the third aspect, the elliptical reflecting surface, the convex lens, and the second reflector of the first reflector are configured by sweeping the shape in the vertical cross section parallel to the front-rear direction in the left-right direction. The design of the ellipsoidal reflecting surface, the convex lens, and the second reflector of the first reflector can be facilitated as compared with the case where there is not.

  In the strobe device according to claim 4, the light emitted from the light source to the front side of the light source, and the light emitted from the light source to the rear side of the light source, and the central axis of the tubular light source by the semi-cylindrical reflecting surface of the third reflector. An inner lens is disposed between the light source and the convex lens for allowing the light that has not been incident on the elliptical reflecting surface of the first reflector among the light returned to the vicinity to enter the convex lens. Preferably, part of the light emitted from the light source is condensed near the focal point of the convex lens by the inner lens.

  Specifically, in the strobe device according to claim 4, the light that is not incident on the ellipsoidal reflecting surface of the first reflector among the light emitted from the light source to the front side of the light source passes through the inner lens and the convex lens. Irradiated within the angle of view.

  Therefore, according to the strobe device according to claim 4, the light that does not enter the elliptical reflecting surface of the first reflector among the light emitted from the light source to the front side of the light source is not irradiated within the angle of view of the strobe device. Rather, the utilization efficiency of light emitted from the light source can be improved.

  In the strobe device according to claim 4, a part of the light emitted from the light source to the rear side of the light source is returned to the vicinity of the central axis of the tubular light source by the semi-cylindrical reflecting surface of the third reflector, Next, the light is irradiated within the angle of view of the strobe device through the inner lens and the convex lens.

  Therefore, according to the strobe device according to claim 4, of the light emitted from the light source to the rear side of the light source and returned to the vicinity of the central axis of the tubular light source by the semi-cylindrical reflecting surface of the third reflector, The use efficiency of the light emitted from the light source can be improved as compared with the case where the light that does not enter the elliptical reflecting surface of the first reflector is not irradiated within the angle of view of the strobe device.

  Further, in the strobe device according to the fourth aspect, the inner lens is configured by sweeping the shape in the vertical cross section parallel to the front-rear direction in the left-right direction. Therefore, according to the strobe device of the fourth aspect, it is easier to design the inner lens than when the inner lens is not configured by sweeping the shape in the vertical cross section parallel to the front-rear direction in the left-right direction. can do.

  The elliptical reflecting surface of the first reflector is configured by sweeping the shape in the vertical cross section parallel to the front-rear direction in the left-right direction, and the convex lens is formed by sweeping the shape in the vertical cross-section parallel to the front-rear direction in the left-right direction. When configured, the degree of diffusion in the left-right direction of the light emitted from the light source cannot be controlled by the elliptical reflecting surface and the convex lens of the first reflector.

  In view of this point, in the strobe device according to claim 5, the first reflector is formed by arranging a plurality of substantially spheroidal surfaces obtained by rotating an elliptical arc around a horizontal axis extending in the front-rear direction in the left-right direction. The elliptical reflecting surface is constructed. Furthermore, a convex lens is configured by arranging a plurality of rotating bodies obtained by rotating a curve and / or a straight line around a horizontal axis extending in the front-rear direction in the left-right direction.

  Therefore, according to the strobe device of the fifth aspect, the diffusion degree of the light emitted from the light source in the left-right direction is controlled by the ellipsoidal reflecting surface of the first reflector and the convex lens, and the light from the convex lens is controlled by the strobe device. It can irradiate within the angle of view.

  In the strobe device according to claim 6, light emitted from the light source to the front side of the light source, and emitted from the light source to the rear side of the light source, and the central axis of the tubular light source is reflected by the semi-cylindrical reflecting surface of the third reflector. An inner lens is disposed between the light source and the convex lens for allowing the light that has not been incident on the elliptical reflecting surface of the first reflector among the light returned to the vicinity to enter the convex lens. Preferably, part of the light emitted from the light source is condensed near the focal point of the convex lens by the inner lens.

  Specifically, in the strobe device according to claim 6, the light that is not incident on the elliptical reflecting surface of the first reflector among the light emitted from the light source to the front side of the light source passes through the inner lens and the convex lens. Irradiated within the angle of view.

  Therefore, according to the strobe device according to claim 6, the light that is not incident on the elliptical reflecting surface of the first reflector among the light emitted from the light source to the front side of the light source is not irradiated within the angle of view of the strobe device. Rather, the utilization efficiency of light emitted from the light source can be improved.

  In the strobe device according to claim 6, a part of the light emitted from the light source to the rear side of the light source is returned to the vicinity of the central axis of the tubular light source by the semi-cylindrical reflecting surface of the third reflector, Next, the light is irradiated within the angle of view of the strobe device through the inner lens and the convex lens.

  Therefore, according to the strobe device of the sixth aspect, among the light emitted from the light source to the rear side of the light source and returned to the vicinity of the central axis of the tubular light source by the semi-cylindrical reflecting surface of the third reflector, The use efficiency of the light emitted from the light source can be improved as compared with the case where the light that does not enter the elliptical reflecting surface of the first reflector is not irradiated within the angle of view of the strobe device.

  A first embodiment of the strobe device of the present invention will be described below. FIG. 1 is a diagram showing a strobe device according to the first embodiment. Specifically, FIG. 1A is a vertical sectional view of the strobe device of the first embodiment as viewed from the left side, and FIG. 1B is a vertical sectional view of the strobe device of the first embodiment as viewed from the right side. is there. 2 to 4 are views showing optical paths of light traveling in the vertical section shown in FIG. FIG. 5 is a diagram for explaining the effect of the strobe device of the first embodiment.

  1 to 5, 1 indicates a tubular light source such as a xenon tube extending in the left-right direction of the strobe device, CL indicates a central axis of the tubular light source 1, and 2 indicates a light source 1. FIG. 2 shows a reflector for reflecting light emitted from the projector. FIG. 2a shows a reflector part constituting a part of the reflector 2, and 2a1 shows an elliptical reflecting surface obtained by sweeping the elliptical arc in the vertical section shown in FIG. 1 in the left-right direction of the strobe device, 2af2 indicates the second focal point (specifically, the second focal line) of the elliptical reflecting surface 2a1. 2b shows the reflector part which comprises a part of reflector 2, 2b1 has shown the elliptical reflective surface obtained by sweeping the elliptical arc in the vertical cross section shown in FIG. 1 to the left-right direction of a strobe device, 2bf2 indicates the second focal point (specifically, the second focal line) of the elliptical reflecting surface 2b1.

  In the strobe device of the first embodiment, the light source 1 is disposed in the vicinity of the first focal point (specifically, the first focal line) of the elliptical reflecting surface 2a1 of the reflector unit 2a and the ellipse of the reflector unit 2b. It is disposed in the vicinity of the first focal point (specifically, the first focal line) of the system reflecting surface 2b1.

  Further, in the strobe device of the first embodiment, as shown in FIG. 1, the elliptical reflecting surface 2a1 of the reflector portion 2a is in front of the central axis CL of the tubular light source 1 (the right side of FIG. 1A, FIG. 1 (B) on the left side. Further, the second focal point 2af2 of the elliptical reflecting surface 2a1 of the reflector 2a is disposed behind the light source 1 (left side in FIG. 1A, right side in FIG. 1B). Further, the elliptical reflecting surface 2b1 of the reflector portion 2b is arranged on the front side (the right side in FIG. 1A and the left side in FIG. 1B) of the tubular light source 1 with respect to the central axis CL. Furthermore, the second focal point 2bf2 of the elliptical reflecting surface 2b1 of the reflector 2b is disposed behind the light source 1 (left side in FIG. 1A, right side in FIG. 1B).

  1-5, 2c has shown the reflector part which comprises a part of reflector 2, 2d has shown the reflector part which comprises a part of reflector 2. In FIG. In the strobe device of the first embodiment, as shown in FIG. 1, the reflecting surfaces (the right side surface of FIG. 1A and the left side surface of FIG. 1B) of the reflector portions 2c and 2d are strobe devices. It is comprised by the perpendicular plane orthogonal to the front-back direction (left-right direction of FIG. 1). That is, a line segment in which the reflecting surfaces (the right surface in FIG. 1A and the left surface in FIG. 1B) of the reflector portions 2c and 2d extend vertically in the vertical cross section shown in FIG. It is configured by sweeping the strobe device in the left-right direction. In the strobe device according to the second embodiment, instead, the reflector 2c is positioned such that the upper end of the reflector 2c is located in front of the lower end of the reflector 2c (the right side in FIG. 1A and the left side in FIG. 1B). The reflection surface of the reflector 2d is inclined such that the lower end of the reflector 2d is positioned in front of the upper end of the reflector 2d (the right side in FIG. 1A and the left side in FIG. 1B). It is also possible to incline the surface.

  Further, in FIGS. 1 to 5, reference numeral 2 e denotes a reflector portion that constitutes a part of the reflector 2. 2e1 is a reflector unit for returning light emitted from the light source 1 to the rear side of the light source 1 (the left side in FIG. 1A and the right side in FIG. 1B) to the vicinity of the central axis CL of the tubular light source 1. The semi-cylindrical reflective surface formed in 2e is shown. In the strobe device of the first embodiment, as shown in FIG. 1, the semicylindrical reflection of the reflector portion 2e is such that the semicylindrical reflection surface 2e1 of the reflector portion 2e and the tubular light source 1 are in a substantially coaxial relationship. Surface 2e1 is formed.

  1-5, 2f has shown the right side wall which comprises a part of reflector 2, and 2g has shown the left side wall which comprises a part of reflector 2. FIG. Reference numeral 3 denotes a convex lens for condensing the reflected light from the reflector portions 2c and 2d of the reflector 2, and 3f denotes a focal point (specifically, a focal line) of the convex lens 3. In the strobe device of the first embodiment, the convex lens 3 is configured by sweeping the shape of the convex lens 3 in the vertical section shown in FIG. 1 in the left-right direction of the strobe device. Further, in the strobe device of the first embodiment, as shown in FIG. 1, the convex lens 3 is disposed on the front side of the light source 1 (the right side of FIG. 1A and the left side of FIG. 1B), and the reflector. The vertical dimension of the portion 2e is made smaller than the vertical dimension H3 (see FIG. 5) of the convex lens 3.

  In the strobe device of the first embodiment, the reflector portions 2a, 2b, 2c, 2d, and 2e are integrally formed by, for example, extrusion molding. Further, the right side wall 2f is fixed to the right end surfaces of the reflector portions 2a, 2b, 2c, 2d, and 2e by, for example, screwing or bonding, and the left side wall 2g is fixed to the left end of the reflector portions 2a, 2b, 2c, 2d, and 2e. It is fixed to the surface by, for example, screwing or bonding. Further, for example, the convex lens 3 is fixed to the reflector 2 by sandwiching the convex lens 3 by the side walls 2f and 2g.

  In the strobe device of the first embodiment, the reflector portions 2a, 2b, 2c, 2d, and 2e are integrally formed by, for example, extrusion molding. However, in the strobe device of the third embodiment, instead, the reflector portion. It is also possible to form 2a, 2b, 2c, 2d, and 2e as separate members, and to form the reflector portions 2a, 2b, 2c, 2d, and 2e by any method other than extrusion molding.

  Specifically, in the strobe device of the first embodiment, as shown in FIG. 2 (A), from the light source 1 to the front side (right side of FIG. 2 (A)) and the upper side (upper side of FIG. 2 (A)). ) Is first reflected by the elliptical reflecting surface 2a1 of the reflector 2a. Next, the reflected light from the elliptical reflecting surface 2a1 travels toward the second focal point 2af2 on the rear side (left side in FIG. 2A) from the light source 1, and is reflected by the reflecting surface of the reflector portion 2c. Next, the reflected light from the reflecting surface of the reflector portion 2 c passes through the vicinity of the focal point 3 f of the convex lens 3 and enters the convex lens 3. Next, the light L1 'refracted by the convex lens 3 becomes substantially horizontal light and is irradiated within the angle of view of the strobe device.

  Similarly, in the strobe device of the first embodiment, as shown in FIG. 2A, from the light source 1 to the front side of the light source 1 (right side of FIG. 2A) and above (upper side of FIG. 2A). The light L2 radiated to is first reflected by the elliptical reflecting surface 2a1 of the reflector portion 2a. Next, the reflected light from the elliptical reflecting surface 2a1 travels toward the second focal point 2af2 on the rear side (left side in FIG. 2A) from the light source 1, and is reflected by the reflecting surface of the reflector portion 2c. Next, the reflected light from the reflecting surface of the reflector portion 2 c passes through the vicinity of the focal point 3 f of the convex lens 3 and enters the convex lens 3. Next, the light L2 'refracted by the convex lens 3 becomes substantially horizontal light and is irradiated within the angle of view of the strobe device.

  In the strobe device of the first embodiment, as shown in FIG. 2A, the lights L1 ′ and L2 ′ from the convex lens 3 are both set to be substantially horizontal light. In the strobe device of the embodiment, instead, the light L1 ′ from the convex lens 3 is set to the downward light so that the light L1 ′ from the convex lens 3 is irradiated in the vicinity of the lower edge within the angle of view of the strobe device. Is also possible.

  Further, in the strobe device of the first embodiment, as shown in FIG. 2B, from the light source 1 to the front side (right side of FIG. 2B) and the lower side (lower side of FIG. 2B). ) Is first reflected by the elliptical reflecting surface 2b1 of the reflector 2b. Next, the reflected light from the elliptical reflecting surface 2b1 travels toward the second focal point 2bf2 on the rear side (left side in FIG. 2B) from the light source 1, and is reflected by the reflecting surface of the reflector portion 2d. Next, the reflected light from the reflecting surface of the reflector portion 2 d passes through the vicinity of the focal point 3 f of the convex lens 3 and enters the convex lens 3. Next, the light L3 'refracted by the convex lens 3 becomes substantially horizontal light and is irradiated within the angle of view of the strobe device.

  Similarly, in the strobe device of the first embodiment, as shown in FIG. 2 (B), from the light source 1 to the front side (right side of FIG. 2 (B)) and the lower side (lower side of FIG. 2 (B)). The light L4 radiated to the side) is first reflected by the elliptical reflecting surface 2b1 of the reflector 2b. Next, the reflected light from the elliptical reflecting surface 2b1 travels toward the second focal point 2bf2 on the rear side (left side in FIG. 2B) from the light source 1, and is reflected by the reflecting surface of the reflector portion 2d. Next, the reflected light from the reflecting surface of the reflector portion 2 d passes through the vicinity of the focal point 3 f of the convex lens 3 and enters the convex lens 3. Next, the light L4 'refracted by the convex lens 3 becomes substantially horizontal light and is irradiated within the angle of view of the strobe device.

  In the strobe device of the first embodiment, as shown in FIG. 2B, the light L3 ′ and L4 ′ from the convex lens 3 are both set to be substantially horizontal light. In the strobe device of the embodiment, the light L3 ′ from the convex lens 3 is set to be upward light so that the light L3 ′ from the convex lens 3 is irradiated in the vicinity of the upper edge within the angle of view of the strobe device.

  Further, in the strobe device of the first embodiment, as shown in FIG. 3A, from the light source 1 to the rear side (left side of FIG. 3A) and the lower side (lower side of FIG. 3A). The light L5 ″ emitted to the side) is first reflected by the semicylindrical reflecting surface 2e1 of the reflector portion 2e. Next, the reflected light L5 from the semicylindrical reflecting surface 2e1 is reflected by the tubular light source 1 The light passes through the vicinity of the central axis CL and is reflected by the elliptical reflecting surface 2a1 of the reflector 2a, and then the reflected light from the elliptical reflecting surface 2a1 is behind the light source 1 (left side of FIG. 3A). ) Toward the second focal point 2af2 and is reflected by the reflecting surface of the reflector 2c, and then the reflected light from the reflecting surface of the reflector 2c passes through the vicinity of the focal point 3f of the convex lens 3 to the convex lens 3. Next, the light is refracted by the convex lens 3. Light L5 'which is irradiated to the angle of the flash device turned schematic horizontal light.

  Similarly, in the strobe device of the first embodiment, as shown in FIG. 3 (A), from the light source 1 to the rear side (left side of FIG. 3 (A)) and the lower side (FIG. 3 (A)). The light L6 ″ emitted to the lower side is first reflected by the semicylindrical reflecting surface 2e1 of the reflector portion 2e. Next, the reflected light L6 from the semicylindrical reflecting surface 2e1 is reflected by the tubular light source 1. Is reflected by the elliptical reflecting surface 2a1 of the reflector portion 2a, and the reflected light from the elliptical reflecting surface 2a1 is then behind the light source 1 (see FIG. 3A). The light beam travels toward the second focal point 2af2 on the left side and is reflected by the reflecting surface of the reflector unit 2c, and then the reflected light from the reflecting surface of the reflector unit 2c passes through the vicinity of the focal point 3f of the convex lens 3, Next, it is bent by the convex lens 3. Light L6 'is irradiated in the angle of the flash device turned schematic horizontal light.

  In the strobe device of the first embodiment, as shown in FIG. 3A, the lights L5 ′ and L6 ′ from the convex lens 3 are set so as to be substantially horizontal light. In the strobe device of the embodiment, the light L5 ′ from the convex lens 3 is set to be downward light so that the light L5 ′ from the convex lens 3 is irradiated in the vicinity of the lower edge portion in the angle of view of the strobe device.

  Further, in the strobe device of the first embodiment, as shown in FIG. 3B, from the light source 1 to the rear side (left side of FIG. 3B) and the upper side (upper side of FIG. 3B). Is first reflected by the semicylindrical reflecting surface 2e1 of the reflector 2e. Next, the reflected light L7 from the semicylindrical reflecting surface 2e1 is the central axis of the tubular light source 1 The light passes through the vicinity of CL and is reflected by the elliptical reflecting surface 2b1 of the reflector 2b.Then, the reflected light from the elliptical reflecting surface 2b1 is behind the light source 1 (left side in FIG. 3B). The light travels toward the second focal point 2bf2 and is reflected by the reflecting surface of the reflector 2d, and then the reflected light from the reflecting surface of the reflector 2d passes through the vicinity of the focal point 3f of the convex lens 3 and enters the convex lens 3. Next, refraction by the convex lens 3 Light L7 'which is irradiated to the angle of the flash device turned schematic horizontal light.

  Similarly, in the strobe device of the first embodiment, as shown in FIG. 3B, from the light source 1 to the rear side of the light source 1 (left side of FIG. 3B) and the upper side (upper side of FIG. 3B). ) Is first reflected by the semicylindrical reflecting surface 2e1 of the reflector portion 2e. Next, the reflected light L8 from the semicylindrical reflecting surface 2e1 is reflected in the center of the tubular light source 1. The light passes through the vicinity of the axis CL and is reflected by the elliptical reflecting surface 2b1 of the reflector 2b, and then the reflected light from the elliptical reflecting surface 2b1 is behind the light source 1 (left side of FIG. 3B). Then, the reflected light from the reflecting surface of the reflector 2d passes through the vicinity of the focal point 3f of the convex lens 3 and enters the convex lens 3. Next, bending by the convex lens 3 Light L8 'is irradiated in the angle of the flash device turned schematic horizontal light.

  In the strobe device of the first embodiment, as shown in FIG. 3B, the lights L7 ′ and L8 ′ from the convex lens 3 are set so as to be substantially horizontal light. In the strobe device of the embodiment, the light L7 ′ from the convex lens 3 is set to be upward light so that the light L7 ′ from the convex lens 3 is irradiated in the vicinity of the upper edge within the angle of view of the strobe device.

  Furthermore, in the strobe device of the first embodiment, as shown in FIG. 4A, from the light source 1 to the front side of the light source 1 (right side of FIG. 4A) and above (upper side of FIG. 4A). The emitted light L9 that is not incident on the elliptical reflecting surface 2a1 of the reflector 2a is directly incident on the convex lens 3. Next, the light L9 'refracted by the convex lens 3 becomes downward light and is irradiated near the lower edge portion in the angle of view of the strobe device.

  Further, in the strobe device of the first embodiment, as shown in FIG. 4A, the reflected light L9 from the semi-cylindrical reflecting surface 2e1 of the reflector portion 2e is the front side of the light source 1 (FIG. 4A). ) On the right side) and on the upper side (upper side in FIG. 4A) and which does not enter the elliptical reflecting surface 2a1 of the reflector 2a is incident on the convex lens 3. Next, the light L9 'refracted by the convex lens 3 becomes downward light and is irradiated near the lower edge portion in the angle of view of the strobe device.

  Furthermore, in the strobe device of the first embodiment, as shown in FIG. 4B, the front side of the light source 1 from the light source 1 (the right side of FIG. 4B) and the lower side (the lower side of FIG. 4B). ) And the light L10 that is not incident on the elliptical reflecting surface 2b1 of the reflector 2b is directly incident on the convex lens 3. Next, the light L10 'refracted by the convex lens 3 becomes upward light and is irradiated in the vicinity of the upper edge within the angle of view of the strobe device.

  Further, in the strobe device of the first embodiment, as shown in FIG. 4B, the reflected light L10 from the semi-cylindrical reflecting surface 2e1 of the reflector portion 2e is the front side of the light source 1 (FIG. 4B ) And the lower side (lower side in FIG. 4B), and the light L10 that does not enter the elliptical reflecting surface 2b1 of the reflector 2b is incident on the convex lens 3. Next, the light L10 'refracted by the convex lens 3 becomes upward light and is irradiated in the vicinity of the upper edge within the angle of view of the strobe device.

  That is, in the strobe device of the first embodiment, as shown in FIG. 5, the reflected light from the elliptical reflecting surface 2a1 of the reflector unit 2 is reflected by the reflecting surface of the reflector unit 2c, and the convex lens 3 has an incident angle α. Is incident on. Therefore, according to the strobe device of the first embodiment, the incidence of light incident on the convex lens 3 is larger than the incident angle β when the reflected light from the elliptical reflecting surface 2a1 of the reflector unit 2 is directly incident on the convex lens 3. The angle α (<β) can be reduced. As a result, according to the strobe device of the first embodiment, it is possible to reduce the possibility that the light incident on the convex lens 3 is totally reflected on the incident surface of the convex lens 3, thereby being emitted from the light source 1. Light utilization efficiency can be improved.

  In other words, in the strobe device of the first embodiment, the light source 1 and the convex lens 3 are arranged close to each other to reduce the size of the entire strobe device in the front-rear direction (left-right direction in FIG. 5). However, the use efficiency of light emitted from the light source 1 can be improved by reducing the incident angle α of the light incident on the incident surface of the convex lens 3.

  Furthermore, in the strobe device of the first embodiment, as shown in FIG. 5, the reflected light from the elliptical reflecting surface 2 a 1 of the reflector unit 2 is incident on the convex lens 3 more directly than the incident lens β at the incident angle β. Since the incident angle α (<β) of the light incident on the incident surface can be reduced, according to the strobe device of the first embodiment, the reflected light from the elliptical reflecting surface 2a1 of the reflector unit 2 is incident on the incident angle. The vertical dimension H3 (<H3 ′) of the convex lens 3 can be made smaller than the vertical dimension H3 ′ of the convex lens 3 ′ when it directly enters the convex lens 3 at β.

  In the strobe device of the first embodiment, as shown in FIG. 3, light L5 ″, L6 ″, L7 ″, L8 ″ emitted from the light source 1 to the rear side of the light source 1 (left side in FIG. 3) is emitted. Irradiated within the angle of view of the strobe device. Therefore, according to the strobe device of the first embodiment, the light angles L5 ″, L6 ″, L7 ″, and L8 ″ emitted from the light source 1 to the rear side of the light source 1 (left side in FIG. 3) are the angles of view of the strobe device. The utilization efficiency of the light emitted from the light source 1 can be improved as compared with the case where the light is not irradiated inside.

  Furthermore, in the strobe device of the first embodiment, as shown in FIG. 1, the reflection of the reflector 2e arranged on the rear side of the light source 1 (left side of FIG. 1A, right side of FIG. 1B). The surface is constituted by a semi-cylindrical reflecting surface 2e1, and the vertical dimension of the reflector portion 2e is smaller than the vertical dimension H3 (see FIG. 5) of the convex lens 3. As a result, in the strobe device of the first embodiment, the semi-cylindrical reflecting surface 2e1 of the reflector portion 2e is behind the tubular light source 1 (left side in FIG. 1A, right side in FIG. 1B). The protruding amount is kept small. Therefore, according to the strobe device of the first embodiment, compared to the strobe device configured like the illumination device described in FIG. A portion protruding to the rear side (the left side in FIG. 1A and the right side in FIG. 1B) can be reduced.

  In the strobe device of the first embodiment, the reflecting surfaces of the reflector portions 2c and 2d are constituted by, for example, a single plane, but in the strobe device of the fifth embodiment, instead of the reflector portions 2c and 2d, The reflective surface may be configured by a single curved surface, configured by combining multiple planes, configured by combining multiple curved surfaces, or configured by combining multiple planes and curved surfaces. Is possible. According to the strobe device of the fifth embodiment, the reflected light from the reflecting surfaces of the reflector portions 2c and 2d is slightly shifted from the focal point 3f of the convex lens 3, so that upward light and downward light are transmitted from the convex lens 3 to the strobe device. It can irradiate within the angle of view.

  Hereinafter, a sixth embodiment of the strobe device of the present invention will be described. The strobe device of the sixth embodiment is configured in substantially the same manner as the strobe device of the first embodiment described above, except for the points described below. Therefore, according to the strobe device of the sixth embodiment, effects similar to those of the strobe device of the first embodiment described above can be obtained except for the points described below.

  FIG. 6 is a view showing a strobe device according to the sixth embodiment. Specifically, FIG. 6 (A) is a vertical sectional view of the strobe device of the sixth embodiment as viewed from the left side, and FIGS. 6 (B) and 6 (C) are inside the vertical section shown in FIG. 6 (A). It is the figure which showed the optical path of the light to advance.

  In the strobe device of the first embodiment, as shown in FIG. 1, no inner lens is disposed between the light source 1 and the convex lens 3, but in the strobe device of the sixth embodiment, FIG. As shown, the inner lens 4 is disposed between the light source 1 and the convex lens 3. In the strobe device of the sixth embodiment, the inner lens 4 is configured by sweeping the shape of the inner lens 4 in the vertical cross section shown in FIG. 6A in the left-right direction of the strobe device. Further, for example, the inner lens 4 is fixed to the reflector 2 by sandwiching the inner lens 4 by the side walls 2f and 2g.

  Specifically, in the strobe device of the sixth embodiment, as shown in FIG. 6B, the front side of the light source 1 from the light source 1 (the right side of FIG. 6B) and the upper side (the upper side of FIG. 6B). ) And the light L11 that is not incident on the elliptical reflecting surface 2a1 of the reflector 2a is incident on the inner lens 4. Next, the light refracted by the inner lens 4 passes through the vicinity of the focal point 3 f of the convex lens 3 and enters the convex lens 3. Next, the light L11 'refracted by the convex lens 3 becomes substantially horizontal light and is irradiated within the angle of view of the strobe device.

  Further, in the strobe device of the sixth embodiment, as shown in FIG. 6B, the reflected light L11 from the semi-cylindrical reflecting surface 2e1 of the reflector portion 2e is the front side of the light source 1 (FIG. 6B ) On the right side) and on the upper side (upper side in FIG. 6B), and the light L11 that does not enter the elliptical reflecting surface 2a1 of the reflector 2a enters the inner lens 4. Next, the light refracted by the inner lens 4 passes through the vicinity of the focal point 3 f of the convex lens 3 and enters the convex lens 3. Next, the light L11 'refracted by the convex lens 3 becomes substantially horizontal light and is irradiated within the angle of view of the strobe device.

  Further, in the strobe device of the sixth embodiment, as shown in FIG. 6C, the front side of the light source 1 from the light source 1 (right side of FIG. 6C) and the lower side (lower side of FIG. 6C). ) And the light L12 that is not incident on the elliptical reflecting surface 2b1 of the reflector 2b is incident on the inner lens 4. Next, the light refracted by the inner lens 4 passes through the vicinity of the focal point 3 f of the convex lens 3 and enters the convex lens 3. Next, the light L12 'refracted by the convex lens 3 becomes substantially horizontal light and is irradiated within the angle of view of the strobe device.

  Further, in the strobe device of the sixth embodiment, as shown in FIG. 6C, the reflected light L12 from the semi-cylindrical reflecting surface 2e1 of the reflector portion 2e is the front side of the light source 1 (FIG. 6C ) And the lower side (the lower side in FIG. 6C), and the light L12 that does not enter the elliptical reflecting surface 2b1 of the reflector 2b enters the inner lens 4. Next, the light refracted by the inner lens 4 passes through the vicinity of the focal point 3 f of the convex lens 3 and enters the convex lens 3. Next, the light L12 'refracted by the convex lens 3 becomes substantially horizontal light and is irradiated within the angle of view of the strobe device.

  Hereinafter, a seventh embodiment of the strobe device of the present invention will be described. The strobe device of the seventh embodiment is configured in substantially the same manner as the strobe device of the sixth embodiment described above, except for the points described below. Therefore, according to the strobe device of the seventh embodiment, substantially the same effects as those of the above-described strobe device of the sixth embodiment can be obtained except for the points described below.

  FIG. 7 is a vertical sectional view of the strobe device of the seventh embodiment as viewed from the left side. In the strobe device according to the sixth embodiment, as shown in FIG. 6A, the reflecting surfaces of the reflector portions 2c and 2d (the right side surface in FIG. 6A) are arranged in the front-rear direction of the strobe device (FIG. 6 ( It is constituted by a vertical plane orthogonal to the left-right direction A). That is, the reflecting surface of the reflector portions 2c and 2d (the surface on the right side of FIG. 6A) sweeps the line segment extending in the vertical direction in the vertical section shown in FIG. 6A in the left-right direction of the strobe device. It is configured by letting. On the other hand, in the strobe device of the seventh embodiment, as shown in FIG. 7, the reflection of the reflector 2c is such that the upper end of the reflector 2c is located in front of the lower end of the reflector 2c (the right side in FIG. 7). The reflecting surface of the reflector portion 2d is inclined such that the surface is inclined and the lower end of the reflector portion 2d is positioned in front of the upper end of the reflector portion 2d (the right side in FIG. 7). Therefore, according to the strobe device of the seventh embodiment, among the reflected light from the reflecting surfaces of the reflector portions 2c and 2d, light that collides with the inner lens 4 and does not enter the convex lens 3 can be reduced. it can.

  The eighth embodiment of the strobe device of the present invention will be described below. The strobe device of the eighth embodiment is configured in substantially the same manner as the strobe device of the sixth embodiment described above, except for the points described below. Therefore, according to the strobe device of the eighth embodiment, substantially the same effects as those of the above-described strobe device of the sixth embodiment can be obtained except for the points described below.

  8 to 10 are views showing a strobe device according to an eighth embodiment. Specifically, FIG. 8A is a plan view of the strobe device of the eighth embodiment, and FIG. 8B is a perspective view of connecting members 5a and 5b for connecting the reflector 2, the convex lens 3, and the inner lens 4. FIG. 8 (C) is a left side view of the strobe device of the eighth embodiment viewed through the connecting members 5a and 5b, and FIG. 8 (D). ) Is a perspective view of the strobe device of the eighth embodiment viewed through the connecting members 5a and 5b. 9A is an enlarged vertical sectional view taken along line AA in FIG. 8B, FIG. 9B is an enlarged vertical sectional view taken along line BB in FIG. 8B, and FIG. (C) is an enlarged vertical sectional view along the line CC in FIG. 8 (B). FIG. 10A is a horizontal sectional view taken along the line DD in FIG. 8B, and FIG. 10B is a diagram showing an optical path of light traveling in the horizontal section shown in FIG. .

  In the strobe device of the sixth embodiment, the elliptical reflecting surface 2a1 of the reflector unit 2a is configured by sweeping the elliptical arc in the vertical section shown in FIG. 6A in the left-right direction of the strobe device. In the strobe device according to the eighth embodiment, the horizontal axis (the one-dot chain line in FIG. 9A) extending in the front-rear direction (the left-right direction in FIG. 9A) of the strobe device shown in FIG. The elliptical reflecting surface 2a1-1 of the reflector portion 2a-1 is configured by an approximately rotating ellipsoid obtained by rotating the elliptical arc in the vertical cross section shown in FIG. 9A. Furthermore, in the strobe device according to the eighth embodiment, a horizontal axis (dotted line in FIG. 9B) extending in the front-rear direction (left-right direction in FIG. 9B) of the strobe device shown in FIG. 9B. The elliptical reflecting surface 2a1-2 of the reflector portion 2a-2 is configured by a schematic rotating ellipsoid obtained by rotating the elliptical arc in the vertical cross section shown in FIG. Further, in the strobe device of the eighth embodiment, a horizontal axis (dotted line in FIG. 9C) extending in the front-rear direction (left-right direction in FIG. 9C) of the strobe device shown in FIG. 9C. The elliptical reflecting surface 2a1-3 of the reflector portion 2a-3 is constituted by a substantially rotating ellipsoid obtained by rotating the elliptical arc in the vertical cross section shown in FIG.

  Furthermore, in the strobe device of the sixth embodiment, the elliptical reflecting surface 2b1 of the reflector portion 2b is configured by sweeping the elliptical arc in the vertical section shown in FIG. 6A in the left-right direction of the strobe device. In the strobe device of the eighth embodiment, a horizontal axis line (dashed line in FIG. 9A) extending in the front-rear direction (left-right direction in FIG. 9A) of the strobe device shown in FIG. An elliptical reflecting surface 2b1-1 of the reflector portion 2b-1 is configured by an approximately rotating ellipsoid obtained by rotating an elliptical arc in the vertical cross section shown in FIG. 9A at the center. Furthermore, in the strobe device according to the eighth embodiment, a horizontal axis (dotted line in FIG. 9B) extending in the front-rear direction (left-right direction in FIG. 9B) of the strobe device shown in FIG. 9B. The elliptical reflecting surface 2b1-2 of the reflector portion 2b-2 is configured by an approximately rotating ellipsoid obtained by rotating the elliptical arc in the vertical cross section shown in FIG. Further, in the strobe device of the eighth embodiment, a horizontal axis (dotted line in FIG. 9C) extending in the front-rear direction (left-right direction in FIG. 9C) of the strobe device shown in FIG. 9C. The elliptical reflecting surface 2b1-3 of the reflector portion 2b-3 is configured by an approximately rotating ellipsoid obtained by rotating the elliptical arc in the vertical cross section shown in FIG.

  Specifically, in the strobe device of the eighth embodiment, as shown in FIGS. 8 and 9, the reflector portion 2 a-1 having the elliptical reflection surface 2 a 1-1 and the reflector having the elliptical reflection surface 2 a 1-2. The part 2a-2 and the reflector part 2a-3 having the elliptical reflection surface 2a1-3 are arranged in the left-right direction of the strobe device, and the reflector part 2b-1 having the elliptical reflection surface 2b1-1 and the elliptical reflection A part of the reflector 2 is configured by arranging the reflector 2b-2 having the surface 2b1-2 and the reflector 2b-3 having the elliptical reflecting surface 2b1-3 in the left-right direction of the strobe device. .

  In the strobe device of the sixth embodiment, the convex lens 3 is configured by sweeping the shape of the convex lens 3 in the vertical cross section shown in FIG. 6A in the left-right direction of the strobe device. In the stroboscopic device of the embodiment shown in FIG. 9A, the horizontal axis (the one-dot chain line in FIG. 9A) extending in the front-rear direction (left-right direction in FIG. 9A) of the stroboscopic device shown in FIG. Part of the convex lens 3 is constituted by a rotating body obtained by rotating the shape of the convex lens portion 3-1 in the vertical cross section shown in FIG. Furthermore, in the strobe device according to the eighth embodiment, a horizontal axis (dotted line in FIG. 9B) extending in the front-rear direction (left-right direction in FIG. 9B) of the strobe device shown in FIG. 9B. A part of the convex lens 3 is constituted by a rotating body obtained by rotating the shape of the convex lens portion 3-2 in the vertical cross section shown in FIG. Further, in the strobe device of the eighth embodiment, a horizontal axis (dotted line in FIG. 9C) extending in the front-rear direction (left-right direction in FIG. 9C) of the strobe device shown in FIG. 9C. A part of the convex lens 3 is constituted by a rotating body obtained by rotating the shape of the convex lens portion 3-3 in the vertical cross section shown in FIG.

  Specifically, in the strobe device of the eighth embodiment, as shown in FIGS. 8 and 9, the convex lens unit 3-1 of the general rotating body, the convex lens unit 3-2 of the general rotating body, The convex lens 3 is configured by arranging the convex lens portions 3-3 in the left-right direction of the strobe device.

  Furthermore, in the strobe device of the eighth embodiment, as shown in FIGS. 8 to 10, a part of the direct light from the light source 1 and a part of the reflected light from the semi-cylindrical reflecting surface 2e1 of the reflector 2e are used. An inner lens portion 4-1 for condensing light in the vicinity of the focal point 3f-1 of the convex lens portion 3-1 of the convex lens 3 is provided. Further, in order to collect a part of the direct light from the light source 1 and a part of the reflected light from the semi-cylindrical reflecting surface 2e1 of the reflector part 2e in the vicinity of the focal point 3f-2 of the convex lens part 3-2 of the convex lens 3. Inner lens part 4-2 is provided. Further, a part of the direct light from the light source 1 and a part of the reflected light from the semi-cylindrical reflecting surface 2e1 of the reflector part 2e are condensed in the vicinity of the focal point 3f-3 of the convex lens part 3-3 of the convex lens 3. The inner lens portion 4-3 is provided. Further, the inner lens 4 is configured by arranging the inner lens part 4-1, the inner lens part 4-2, and the inner lens part 4-3 in the left-right direction of the strobe device.

  Specifically, in the strobe device of the eighth embodiment, the optical path of light traveling in the vertical cross section shown in FIG. 9A is as shown in FIG. 2A, FIG. 2B, FIG. This is almost the same as the optical path of light traveling in the vertical section shown in FIGS. 3 (B), 6 (B) and 6 (C). Further, the optical path of light traveling in the vertical section shown in FIG. 9B is shown in FIGS. 2A, 2B, 3A, 3B, 6B, and 6C. This is almost the same as the optical path of the light traveling in the vertical section shown in FIG. In addition, the optical path of light traveling in the vertical cross section shown in FIG. 9C is shown in FIGS. 2A, 2B, 3A, 3B, 6B, and FIG. This is almost the same as the optical path of the light traveling in the vertical section shown in FIG.

  Furthermore, in the strobe device of the eighth embodiment, as shown in FIG. 10B, out of the light traveling in the horizontal section shown in FIG. 10B, the front-rear direction of the strobe device (in FIG. 10B). The light L13 emitted from the light source 1 at an angle with respect to the vertical direction is first reflected by the semi-cylindrical reflecting surface 2e1 of the reflector portion 2e. Next, the reflected light from the semi-cylindrical reflecting surface 2e1 enters the inner lens part 4-1 of the inner lens 4, and is then refracted by the inner lens part 4-1. Next, the light refracted by the inner lens part 4-1 enters the convex lens part 3-1 of the convex lens 3, and then is refracted by the convex lens part 3-1 in the longitudinal direction of the strobe device (in FIG. 10B). The light is irradiated in the angle of view of the strobe device as light L13 ′ substantially parallel to the vertical direction.

  Further, in the strobe device of the eighth embodiment, as shown in FIG. 10B, of the light traveling in the horizontal section shown in FIG. 10B, the front-rear direction of the strobe device (in FIG. 10B). The light L14 emitted from the light source 1 at an angle with respect to the vertical direction is first incident on the inner lens part 4-1 of the inner lens 4 and then refracted by the inner lens part 4-1. . Next, the light refracted by the inner lens part 4-1 enters the convex lens part 3-1 of the convex lens 3, and then is refracted by the convex lens part 3-1 in the longitudinal direction of the strobe device (in FIG. 10B). The light L14 ′ that is substantially parallel to the vertical direction is irradiated within the angle of view of the strobe device.

  Furthermore, in the strobe device of the eighth embodiment, as shown in FIG. 10B, out of the light traveling in the horizontal section shown in FIG. 10B, the front-rear direction of the strobe device (in FIG. 10B). The light L15 emitted from the light source 1 at an angle with respect to the vertical direction is first reflected by the semi-cylindrical reflecting surface 2e1 of the reflector portion 2e. Next, the reflected light from the semi-cylindrical reflecting surface 2e1 enters the inner lens part 4-2 of the inner lens 4, and is then refracted by the inner lens part 4-2. Next, the light refracted by the inner lens part 4-2 is incident on the convex lens part 3-2 of the convex lens 3, and is then refracted by the convex lens part 3-2, in the front-rear direction of the strobe device (in FIG. 10B). The light is irradiated in the field angle of the strobe device as light L15 ′ substantially parallel to the vertical direction.

  Further, in the strobe device of the eighth embodiment, as shown in FIG. 10B, of the light traveling in the horizontal section shown in FIG. 10B, the front-rear direction of the strobe device (in FIG. 10B). The light L16 emitted from the light source 1 at an angle with respect to the vertical direction is first incident on the inner lens part 4-2 of the inner lens 4 and then refracted by the inner lens part 4-2. . Next, the light refracted by the inner lens part 4-2 is incident on the convex lens part 3-2 of the convex lens 3, and is then refracted by the convex lens part 3-2, in the front-rear direction of the strobe device (in FIG. 10B). The light L16 'is substantially parallel to the vertical direction) and is irradiated within the angle of view of the strobe device.

  Furthermore, in the strobe device of the eighth embodiment, as shown in FIG. 10B, out of the light traveling in the horizontal section shown in FIG. 10B, the front-rear direction of the strobe device (in FIG. 10B). The light L17 emitted from the light source 1 at an angle with respect to the vertical direction is first incident on the inner lens portion 4-3 of the inner lens 4 and then refracted by the inner lens portion 4-3. . Next, the light refracted by the inner lens unit 4-3 is incident on the convex lens unit 3-3 of the convex lens 3, and then refracted by the convex lens unit 3-3, so that the light is refracted in the front-rear direction (FIG. 10B). The light L17 'is substantially parallel to the vertical direction) and is irradiated within the angle of view of the strobe device.

  Further, in the strobe device of the eighth embodiment, as shown in FIG. 10B, of the light traveling in the horizontal section shown in FIG. 10B, the front-rear direction of the strobe device (in FIG. 10B). The light L18 emitted from the light source 1 at an angle with respect to the vertical direction is first reflected by the semi-cylindrical reflecting surface 2e1 of the reflector portion 2e. Next, the reflected light from the semi-cylindrical reflecting surface 2e1 enters the inner lens portion 4-3 of the inner lens 4, and is then refracted by the inner lens portion 4-3. Next, the light refracted by the inner lens unit 4-3 is incident on the convex lens unit 3-3 of the convex lens 3, and then refracted by the convex lens unit 3-3, so that the light is refracted in the front-rear direction (FIG. 10B). The light is irradiated in the angle of view of the strobe device as light L18 ′ substantially parallel to the vertical direction.

  That is, according to the strobe device of the eighth embodiment, as shown in FIG. 10B, the degree of diffusion of the light emitted from the light source 1 in the left-right direction is determined by the elliptical reflecting surface 2a1 of the reflector 2a-1. -1, the elliptical reflecting surface 2a1-3 of the reflector part 2a-3, the inner lens parts 4-1, 4-2, 4-3 of the inner lens 4, and the convex lens parts 3-1, 3-2, 3 of the convex lens 3 -3, the light from the convex lens 3 can be irradiated within the angle of view of the strobe device.

  In the ninth embodiment, the first to eighth embodiments described above can be appropriately combined.

  The strobe device of the present invention can be applied to, for example, a camera.

It is the figure which showed the strobe device of 1st Embodiment. It is the figure which showed the optical path of the light which progresses in the vertical cross section shown to FIG. 1 (A). It is the figure which showed the optical path of the light which progresses in the vertical cross section shown to FIG. 1 (A). It is the figure which showed the optical path of the light which progresses in the vertical cross section shown to FIG. 1 (A). It is a figure for demonstrating the effect of the strobe device of 1st Embodiment. It is the figure which showed the flash device of 6th Embodiment. It is the vertical sectional view which looked at the strobe device of a 7th embodiment from the left side. It is the figure which showed the electronic flash apparatus of 8th Embodiment. It is the figure which showed the electronic flash apparatus of 8th Embodiment. It is the figure which showed the electronic flash apparatus of 8th Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Light source CL Center axis 2 Reflector 2a, 2b, 2c, 2d, 2e Reflector part 2f, 2g Side wall 2a1, 2b1, 2e1 Reflecting surface 2af2, 2bf2 2nd focus 3 Convex lens 3f Focus 4 Inner lens

Claims (6)

A light source, a first reflector having an elliptical reflecting surface for reflecting light emitted from the light source, and a convex lens for condensing light from the light source and / or light from the first reflector, In the strobe device in which the light source is disposed in the vicinity of the first focal point of the elliptical reflecting surface of the first reflector,
Arranging at least a part of the elliptical reflecting surface of the first reflector in front of the center of the light source, and arranging the second focal point of the elliptical reflecting surface of the first reflector in the rear side of the light source;
A second reflector is provided for reflecting the reflected light from the elliptical reflecting surface of the first reflector traveling toward the second focal point on the rear side of the light source and for entering the convex lens on the front side of the light source. Strobe device. Using a tubular light source extending in the left-right direction as the light source,
A third reflector having a semi-cylindrical reflecting surface for returning light emitted from the light source to the rear side of the light source to the vicinity of the central axis of the tubular light source is disposed on the rear side of the light source;
The strobe device according to claim 1, wherein the vertical dimension of the third reflector is smaller than the vertical dimension of the convex lens. The elliptical reflecting surface of the first reflector is configured by sweeping the shape in the vertical cross section parallel to the front-rear direction in the left-right direction,
Construct a convex lens by sweeping the shape in the vertical cross section parallel to the front-rear direction in the left-right direction,
The strobe device according to claim 2, wherein the second reflector is configured by sweeping a shape in a vertical cross section parallel to the front-rear direction in the left-right direction. Of the light emitted from the light source to the front side of the light source and the light emitted from the light source to the rear side of the light source and returned to the vicinity of the central axis of the tubular light source by the semi-cylindrical reflecting surface of the third reflector, An inner lens is disposed between the light source and the convex lens so that light that does not enter the elliptical reflecting surface of the reflector is incident on the convex lens.
The strobe device according to claim 3, wherein the inner lens is configured by sweeping a shape in a vertical cross section parallel to the front-rear direction in the left-right direction. The elliptical reflecting surface of the first reflector is configured by arranging a plurality of approximate rotational ellipsoids obtained by rotating an elliptical arc around a horizontal axis extending in the front-rear direction in the left-right direction,
The strobe according to claim 2, wherein a convex lens is formed by arranging a plurality of rotating bodies obtained by rotating a curve and / or a straight line around a horizontal axis extending in the front-rear direction in the left-right direction. apparatus.   Of the light emitted from the light source to the front side of the light source and the light emitted from the light source to the rear side of the light source and returned to the vicinity of the central axis of the tubular light source by the semi-cylindrical reflecting surface of the third reflector, 6. The strobe device according to claim 5, wherein an inner lens for allowing light that does not enter the elliptical reflecting surface of one reflector to enter the convex lens is disposed between the light source and the convex lens.

Images