Photometric device of single-lens reflex camera
专利汇可以提供Photometric 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 switch the photometric distribution, by moving vertically a reflective mirror or changing the reflection factor of an electrochemical cell. CONSTITUTION:The luminous flux from a photographic lens is divided partially in beam splitters 3 and 4 by diffraction after passing through a focusing screen 2, and the divided light is measured by a photoelectric detector 6, and the other light transmitted through beam splitters reaches eyes as a finder luminous flux. A relief type reflecting diffraction grating 8 is provided in the center of the beam splitter 3, and a relief type reflecting diffraction grating 10 is provided in the peripheral part of the beam splitter 4. A luminous flux 7-1 transmitted through the focusing screen 2 is reflected and diffracted by the diffraction grating 8 and is incident to the detector 6 as a light 9 while being totally reflected in beam splitters. A luminous flux 7-2, which passes through the focusing screen, from the peripheral part of a picture is reflected and diffracted by the diffraction grating 10 existing a region different from the diffraction grating 8 and goes in the direction opposite to that of the light 9 and is reflected by a reflective mirror 5 and is incident again to the beam splitter from an end face 11 of the beam splitter and is propagated while being totally reflected and is incident to the photoelectric detector 6.，下面是Photometric device of single-lens reflex camera专利的具体信息内容。
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4 可交联主体材料
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10 하이브리드형 디바이스
