Mitsubishi Denki Kabushiki Kaisha

Yukio Satou

Junichi Nishimae

Hiroyuki Kawano

Tatsuki Okamoto

Atsuhiro Sono

Tomohiro Sasagawa

Kohei Teramoto

Akira Sekiguchi

Yoshiyuki Goto

Lengths of both sides of each end plane of a light-intensity distribution uniformizing element receiving a light flux and having an F-number of 1 are set to &frac12; of those of a reflecting surface of a reflecting optical-spatial modulator element, position information of uniformed light fluxes output from the light-intensity distribution uniformizing element is Fourier-transformed into diverging angle information indicated by incident light fluxes output from a first group of lenses, a relay deformed diaphragm intercepts an interference component of each incident light flux, which is expected to interfere with an outgoing light flux, to produce asymmetric light fluxes, the asymmetric light fluxes are incident on the reflecting optical-spatial modulator element, a projection lens deformed diaphragm removes stray light from outgoing light fluxes output from the reflecting optical-spatial modulator element, and an image is displayed according to the outgoing light fluxes.

LIGHT CONVERGING OPTICAL SYSTEM FOR CONVERGING LIGHT ONTO A REFLECTING OPTICAL-SPATIAL MODULATOR ELEMENT AND IMAGE DISPLAYING APPARATUS FOR DISPLAYING AN IMAGE FORMED BY LIGHT REFLECTED BY THE REFLECTING OPTICAL-SPATIAL MODULATOR ELEMENT

A digital mirror dence chip has a substrate, micro-mirrors disposed on the substrate, and a glass cover plate disposed over the micro-mirrors. Each micro-mirror is inclined by &plus;10 degrees or &minus;10 degrees with respect to the substrate to be set to an on-state or an off-state. Incident light produced in a lighting source system is totally reflected in a total internal reflection prism and is incident on the micro-mirrors through the glass cover plate. Outgoing light reflected by micro-minors in the on-state passes through a projection lens and is projected onto a screen to form an image on the screen. Also, outgoing light reflected by micro-mirrors in the off-state passes out of the projection lens. The glass cover plate is not parallel to the substrate. Therefore, light specularly reflected by a surface of the glass cover plate passes out of the projection lens.

Image displaying apparatus for displaying an image according to light reflected by an optical spatial modulator element

Growing community of inventors

Tokyo, Japan

Yukio Satou