In-viewfinder display device of single-lens reflex camera
专利汇可以提供In-viewfinder display device of single-lens reflex camera专利检索，专利查询，专利分析的服务。并且PURPOSE: To obtain an easy-to-see display device by allowing set diaphragm value information which is displayed on the outer periphery of a lens barrel and calculated diaphragm value information on a display device arranged nearby a pentagonal roof prism to be seen at the same lower position in the photographic visual field of a viewfinder.
CONSTITUTION: Display information light M which indicates the diaphragm value set with an diaphragm ring is reflected sidewise near the front-side upper slanting surface 11d of the pentagonal roof prism 11 by a mirror 22 arranged almost in the right-left center. Then, the light is reflected upward by a mirror 21, transmitted through a concave lens 19, and reflected by a mirror 20 toward the pentagonal roof prism 11 to be made incident from the front-side upper slanting surface 11d of the prism 11. Those rays of travel to below an exit surface 11e at the same angle with part of information light L which arrives from a part corresponding to 60a and exits from an ocular 13 through the same path. Consequently, the set diaphragm value is observed in the viewfinder at the same position with the calculated diaphragm value.
COPYRIGHT: (C)1986,JPO&Japio，下面是In-viewfinder display device of single-lens reflex camera专利的具体信息内容。
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