| 摘要 |
PURPOSE:To permit giving a photographer warning by integrally forming an electrochromic element which is successively laminated with a 1st color forming layer, insulating layer and 2nd color forming layer between a pair of transparent electrodes and a patterned metal reflection surface and disposing the electrochromic element to an incident side. CONSTITUTION:The metal reflection surface 25 consisting of aluminum, etc., is formed to the display pattern shape on the transparent electrode 20 on a prescribed lens 19 of a range finder system and further the electrochromic element 26 is formed thereon. The electrochromic element 26 is constituted by laminating the cathode side color forming layer 24 consisting of, for example, tungsten oxide, etc., as the 1st color forming layer, the insulating layer 23 consisting of, for example, zirconium dioxide or the like as a proton donator, and the anode side color forming layer 22 as represented by, for example, iridium oxide as the 2nd color forming layer between the transparent electrodes 20 and 21 in order of the transparent electrode 200, the metal reflection surface 25, the 2nd color forming layer 22, the insulating layer 23, the 1st color forming layer 24 and the transparent electrode 21. Giving the photographer warning is thereby permitted.
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