Patent ID: 7557318

Claim:
A light transmitting operating member comprising: a first member having a first transmittance; and a second member having a second transmittance greater than the first transmittance, wherein the first member is provided with an insertion hole into which the second member is inserted, and the second member is provided with an outer circumference surface which faces an inner circumference surface of the insertion hole in a state where the second member is inserted into the insertion hole, wherein at least one of the inner circumference surface of the insertion hole and the outer circumference surface of the second member is provided with a tapered surface which decreases a gap between the inner circumference surface and the outer circumference surface as approaching an exterior surface of the operating member, and wherein at least one of the inner circumference surface of the insertion hole and the outer circumference surface of the second member is provided with a groove at a position closer to the exterior surface of the operating member than the tapered surface, the groove preventing an adhesive agent flowing into between the inner circumference surface and the outer circumference surface from flowing out on the exterior surface of the operating member.