Patent ID: 11914151
Assignee: RICOH COMPANY, LTD.
Field: Optics (Instruments)
Classification: CPC G  A | IPC G

Claim 0:
1. An optical device comprising:
a light source configured to irradiate an object with light;
a detector having a photo-sensing surface, the detector configured to receive the light reflected by the object and detect a position of the reflected light on the photo-sensing surface thereof; and
circuitry configured to
output data of a degree of inclination of the object obtained based on the position of the light on the photo-sensing surface of the detector and a prescribed parameter, and
change the prescribed parameter based on the position of the light on the photo-sensing surface of the detector,
wherein the light source includes multiple light emitters,
one of the multiple light emitters is selected to irradiate the object,
the selected one of the multiple light emitters is changed to another one of the multiple light emitters when the light is not incident on the photo-sensing surface of the detector, and
the changing is repeated until the light is incident on the photo-sensing surface of the detector.