Patent ID: 7477310
Filing Date: 2009-01-13
Classification: G02B,H04N

Abstract:
1. An imaging apparatus for night shooting imaging without an infrared cutoff filter comprising: an optical barrel, a fixed barrel disposed at a rear side portion on an optical axis of said optical barrel, at least one lens barrel being movable along said optical axis with respect to said fixed barrel, a series of lens groups disposed on said optical axis comprised of a first fixed lens group, a movable zoom lens group, a second fixed lens group and a focus lens group arranged in series, an iris disposed between said second fixed lens group and said focus lens group for adjusting an amount of light passing on said optical axis; a solid-state image sensor disposed at a backside portion on the optical axis of said lens barrel for receiving light passed by said iris, and an electro-chromic infrared adjuster provided on said optical axis and interposed between said iris and said focus lens group, said electro-chromic infrared adjuster having a transmiffance to infrared wavelengths electrically controlled to adjust an amount of infrared electromagnetic wave to be transmitted therethrough to said image sensor.