Patent Number: 6,683,657

Title: Projection display device and application system of same

Abstract: A projection display device has a large dynamic range in addition to a large-sized screen and high definition. In a projection display device for projecting an image formed by an optical modulator to display the image, an illumination-light amount modulating unit for adjusting an amount of light illuminated to the optical modulator is provided between a light source for illuminating the optical modulator and the optical modulator.

Inventors: Miyawaki; Mamoru (Kanagawa, JP)

Assignee: Canon Kabushiki Kaisha

International Classification: H04N 9/31 (20060101); H04N 5/74 (20060101); H04N 009/30 ()

Expiration Date: 01/27/2021