Patent ID: 11971307
Assignee: BEIJING RSLASEROPTO-ELECTRONICS TECHNOLOGY CO. LTD
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 6:
7. The device according to claim 5, wherein the housing comprises:
a first sealing groove arranged corresponding to a light inlet of the housing;
a first sealing ring matched with the first sealing groove and arranged on the light inlet;
a first window member matched with the first sealing ring and arranged inside the first sealing groove;
a second sealing groove arranged corresponding to a light outlet of the housing;
a second sealing ring matched with the second sealing groove and arranged on the light outlet; and
a second window member matched with the second sealing ring and arranged inside the second sealing groove; wherein,
the first window member and the second window member are both provided with anti-reflection films thereon, or
a normal of a light entrance surface and/or a normal of a light exit surface of the first window member forms a first included angle with an incident direction of the laser beam, and/or
a normal of a light entrance surface and/or a normal of a light exit surface of the second window member forms a second included angle with an incident direction of the laser beam, and
the first included angle or the second included angle is 5 degrees to 10 degrees.