Patent ID: 8348829
Filing Date: 2013-01-08
Classification: A61B,G02B

Abstract:
1. A scanning endo scope apparatus comprising: a first transmitter that transmits light received at a first incident end to a first emission end, the first transmitter emitting a beam of the light exiting the first emission end; an actuator that moves the first emission end in a direction perpendicular to an emission direction, the beam of the exiting light being emitted from the first emission end in the emission direction; a first light source unit that emits light of a first band toward the first incident end; a first optical filter that is mounted in the optical path of the light emitted from the first emission end, the first optical filter reflecting the light of the first band, the first optical filter transmitting light of a second band, the second band being outside of the first band; a second optical filter that is mounted in the optical path of the light of the first band that is reflected by the first optical filter, the second optical filter transmitting the light of the first band at a transmittance that varies according to a position on a surface of the second optical filter where the light of the first band is incident; a second transmitter that receives the light of the first band, which has passed through the second optical filter, and transmits the received light from a second incident end to a second emission end; a first photo-detector that detects an amount of the light of the first band that is emitted from the second emission end; and a position determiner that determines a position of the first emission end on the basis of the amount of the light of the first band that is detected by the first photo-detector.