▎ 摘　　要

NOVELTY - The apparatus has transparent conductive layers which are coupled to an optical surface of an optical lens. A liquid crystal film is separated into a number of portions by the conductive layer, where a transmissive state of each portion with respect to light is configured to change in response to application of a voltage to the transparent layers. The transparent layers are made of a material selected from indium tin oxide, conductive polymers, metallic networks, carbon nanotubes, graphene, nanowire meshes, or ultra-thin metal films. A controller is operable to select the portions. USE - Apparatus for electric iris. ADVANTAGE - The controller selectively applies the voltage to change the transmissive state of portions from the number of portions of the liquid crystal film between transparent and reflective to change an amount of light passing through the optical lens to an image sensor. The apparatus automatically adjusts a level of light reaching an optical lens with an electric iris without motion or vibration to protect image sensors from sudden bright lights or lasers. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) an optical system; and (2) a method for automatically adjusting a level of light reaching an optical lens. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of an apparatus for electric iris. Optical system (200) Optical lens (202) Lens holder (204) Electronically variable iris (206) Sensor (208)