Beam irradiation device and laser radar system
AssigneeSanyo Electric Co., Ltd.
InventorsYoshiaki Maeno, Masato Yamada
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Abstract
A beam irradiation device is provided with a laser light source which emits laser light, a mirror actuator which causes the laser light to scan a targeted area, and an emission window through which laser light reflected on a mirror of the mirror actuator is transmitted. The emission window is formed with an anti-reflection film for suppressing surface reflection. The anti-reflection film has an angle dependence such that a lower limit of a reflectance is maintained in an incident angle range (0 to 20°) of the laser light at least corresponding to a scanning range of the laser light.
Claims10
A beam irradiation device, comprising:
- a laser light source which emits laser light;
- an actuator which causes the laser light to scan a targeted area;
- and
- an emission window through which the laser light via the actuator is transmitted, wherein
- the emission window is formed with reflection suppressing means for suppressing surface reflection.
A laser radar system, comprising:
- the beam irradiation device;
- and
- a light receiving portion which receives the laser light reflected on the targeted area, wherein
- the beam irradiation device comprises:
- a laser light source which emits laser light;
- an actuator which causes the laser light to scan a targeted area;
- and
- an emission window through which the laser light via the actuator is transmitted, wherein
- the emission window is formed with reflection suppressing means for suppressing surface reflection.
Dependencies are inferred from the claim text.