High-speed laser distance measuring device

Abstract

A high-speed laser distance measuring device is described that includes an emitting part and a receiving part. The emitting part can include a polarizer () arranged between a light emitting tube () and a reflective mirror (); the receiving part can further include a polarizing beamsplitter () arranged between the optical filter () and the receiving tube set. The light emitting tube () can emit an outgoing light beam to the polarizer (), and the outgoing light beam can form an outgoing polarized light beam and is transmitted into the reflective mirror (). After being reflected by the reflective mirror () and passing through the transmitting objective lens (), the outgoing polarized light beam can be transmitted onto a target object. After being reflected by the target object, the outgoing polarized light beam can form a reflected polarized light beam, which passes through the receiving objective lens set () and is transmitted to the optical filter (). After being filtered, the reflected polarized light beam is transmitted into the polarizing beamsplitter (), and is split into a first reflected polarized light beam and a second reflected polarized light beam, which are transmitted into the first receiving tube (), and the second receiving tube () respectively. The high-speed laser distance measuring device can identify the light formed by the reflection of an oriented reflective target and a target object, and can adopt different receiving means for receiving them. Simultaneously, it can effectively filter the interference caused by particulate matter in the test environment to the test.