Scanning camera-free defocusing measurement collimator

US11630317B2 · kind B2 · utility

Assignee

• Shenzhen General Core Optoelectronics Co., Ltd. · CN

Inventors

• Zhongfei Chen · Longbeilingcun, CN
• Minglin He · Longbeilingcun, CN
• Shuaitian Jiang · Longbeilingcun, CN
• Jianzhi Song · Longbeilingcun, CN
• Deyu Li · Hong Kong, CN

Key dates

• Filing date: Oct 13, 2022
• Grant date: Apr 18, 2023
• Expiry date: Oct 13, 2042

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B13/003
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A collimator includes a front lens sleeve, a clamping groove disposed on the front lens sleeve, a linking sleeve fastened on the clamping groove, a snapping groove disposed on the linking sleeve distal the front lens sleeve, a connection sleeve slidably connected to the snapping groove, a constraint sleeve disposed on the snapping groove, and a limit groove disposed on an inner surface of the constraint sleeve. The components cooperate with each other. The test chart is tilted relative to the optical axis of the lens and makes the test chart distributed at different distances along the axis. When using the camera to shoot the collimator, the clarity of different components reflects the relative focus position of the camera so as to detect the vehicle mounted camera.