| 摘要 |
PROBLEM TO BE SOLVED: To provide: an optical substrate, optical element, and optical element barrel, which together enhances stability of the optical element inside the barrel, the optical element comprising the optical substrate combined with an optical member, made of a material different from that of the optical substrate, on a surface thereof; and an optical device having the optical element barrel.SOLUTION: An optical substrate 2 forms an optical element 1 by being combined with an optical member 3 on a surface 20 thereof, the optical member 3 being made of a material different from that of the optical substrate 2, and has, at least on a portion of an outer peripheral surface 22 thereof, a tapered edge surface that is centripetally tapered from a side of the one surface 20 to be combined with the optical member 3 toward a side of an opposing surface 21.SELECTED DRAWING: Figure 2 |
