Patent ID: 9568358
Date: 2017-02-14
CPC Classifications: G01C,G01J,G01S

Claim:
1. An optical measurement device comprising: a first light source; an optical element configured to condense a light beam emitted from the first light source and irradiate the light beam onto an object; and a photo detector configured to detect reflected light or scattered light of the light beam from the object, the reflected light or scattered light passing through an imaging system, the light beam being irradiated onto the object, wherein, at least in a first scanning direction, a first optical path length from the first light source to a first conjugate image of the first light source through the optical element is different from a second optical path length from the photo detector to a second conjugate image of the photo detector through the imaging system and, wherein the optical path at a light source side and a photo detector side includes a light converging point having a different position relative to the first light source and the photo detector.