Patent ID: 9039210
Filing Date: 2015-05-26
Classification: F41G,G01S,G02B,G03B

Abstract:
1. A variable length light shield for an electro-optical sensor within a nose cone, comprising: a base; a telescopic shade having a first portion supported by the base and a second portion slideable relative to the first portion; a ring rotatably supported about the base; a guide tube having a first end disposed proximate the ring and a second end extending away from the ring about a side of the telescopic shade; an extension spring having a first end supported by the guide tube and a second end supported by the second portion of the telescopic shade; and a cable extending through the guide tube and the extension spring, the cable having a first end coupled to the ring and a second end coupled to the second portion of the telescopic shade, wherein the extension spring is configured to exert a force on the second portion to extend the second portion away from the first portion, and wherein rotation of the ring causes movement of the second portion relative to the first portion.