| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a laser radar and a photoreceiver capable of appropriately receiving reflection from a target region through a simple optical filter and achieving miniaturization. <P>SOLUTION: A laser radar comprises: a laser light source 21 to emit laser light; a mirror actuator 24 to scan a target region with the laser light; a light-receiving lens 32 to converge reflection of the laser light from the target region; a concave lens 33 which reduces a size of the reflection converged by the light-receiving lens 32 smaller than the size of the reflection on entering the light-receiving lens 32 and deflects the reflection closer to parallel light; a band-pass filter 34, where the reflection enters after transmitting the concave lens 33, to remove unnecessary light having a wave length range other than the laser light; and a light detection device 35 to receive the reflection having transmitted the band-pass filter 34. <P>COPYRIGHT: (C)2012,JPO&INPIT |
