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Super wide angle zoom strobe apparatus and zoom compact camera having zoom strobe device
Super wide angle zoom strobe apparatus and zoom compact camera having zoom strobe device
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机译:超广角变焦闪光灯装置和具有变焦闪光灯装置的变焦紧凑型相机
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摘要
A zoom strobe device suitable for a super wide angle, in which a distance between a reflector, which is provided on the base thereof with a rod-shaped tubular light emitting tube and a Fresnel lens, is varied to vary a flash angle of illumination, wherein the zoom strobe device satisfies the following conditions (1) and (2): ;wherein &phgr; designates the resultant power of the Fresnel lens in an upward/downward direction perpendicular to the length of the rod-shaped light emitting tube, Lw designates the distance between the base of the reflector and an outer surface of the Fresnel lens when the reflector is located closest to the Fresnel lens, and H designates the maximum length of the strobe device in the upward/downward direction.
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