OPTICAL DEVICE, LIDAR DEVICE, AND IMAGE PICKUP DEVICE

摘要

Provided are an optical device, a lidar device, and an image pickup device which are easily applied even when a casing has a waterproof structure or an airtight structure. An optical device is provided with: a casing (1) having a waterproof structure; a light transmission part (3) provided in the casing (1); an air blow port (4) for blowing air onto the light transmission part (3); a flow path (2) for causing the air to flow to the air blow port (4), the flow path being provided to maintain the waterproof structure of the casing (1); an air intake port (1in) through which the air flows into the flow path; a blower part (5) for generating the flow of the air from the air intake port (1in) to the air blow port (4); and an observation unit part (6) housed in the casing (1) to receive light from the outside via the light transmission part (3).