Nec Viewtechnology, Ltd.

Nec Display Solutions, Ltd.

Hiroaki Fukunaga

Kunitaka Furuichi

This optical component adjustment mechanism includes support framefor supporting optical compensator, optical compensator supporthaving first and second rotary salientsprojecting outside from support framein a predetermined axis, holder support framefor rotatably supporting first and second rotary salients, setscrewfor fixing rotation of optical compensator support, and bracket

Optical component adjustment mechanism, liquid crystal display and projection display

An optical unit has a first lens holder holding a first lens and a second lens holder holding a second lens, the first lens holder and the second lens holder being mounted on a common lens base. The first lens holder is movable in the direction of one side of the exit end face of a light tunnel, and the second lens holder is movable in the direction of another side, adjacent to the one side, of the exit end face of a light tunnel. The first lens holder and the second lens holder are independently moved to bring an illuminating light area on a DMD, as an image forming device, into alignment with an image forming area on the DMD. The illuminating light area can thus be accurately positioned in the image forming area on the DMD. The optical unit has a high light utilization efficiency and can easily be operated for positional adjustment of the illuminating light area. The optical unit is incorporated in a projection display apparatus.

Optical unit for projection display apparatus and projection display apparatus

A reflecting mirrorhas a rotation axiswhich is inserted into a bearingof a case. Accordingly, the reflecting mirroris capable of rotating with respect to the caseand only the reflecting mirroris capable of adjusting the set up angle &#x3b1; made with the case. When the set up angle is changed, the reflecting angle of the projected ray on the reflecting mirroris also changed. Therefore, the launching angle of the projected raywith respect to the casecan be adjusted.

Growing community of inventors

Tokyo, Japan

Hiroaki Fukunaga