| 摘要 |
PROBLEM TO BE SOLVED: To facilitate positioning between an optical element and a light transmission member in an optical module with parallel light emitted from or being incident on. ! SOLUTION: An optical module includes: an optical element 10; and a light transmission member 20, being a member made of a light transmissive material, which has a fitting part 21 into which a counterpart optical member fits and a lens part 22 which converts light having a first wavelength emitted from the optical element into parallel light or converts parallel light having the first wavelength emitted from the counterpart optical member into convergent light incident on the optical element 10. The light transmission member 20 is formed to be such a shape that, when the light transmission member is irradiated with visible light having a second wavelength lower than the first wavelength, an image-forming plane on which light having the second wavelength transmitted through the lens part 21 images the optical element 10 coinc |
