| 摘要 |
PROBLEM TO BE SOLVED: To make a lens member more covered by a case body to cut off a stray light made incident on the lens member. SOLUTION: A lens member 1 is provided on the front face side of a case body 2 for cutting off external light, and an IC3 for range-finding is provided on the backface side thereof. A lens part 1a and its peripheral part 1b of the lend member 1 is molded integrally by a transparent plastic such as an acrylic resin, and a positioning protrusion 1c is projected from an outer circumferential part of the lens member 1. A recess 2c engaged with the positioning protrusion 1c is formed in an outer circumferential part 2c on the front face side of the case body 2. A gate mark 1d in molding is located in the positioning protrusion 1c.
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