US Patent No. 9,838,655

PROJECTOR AND IMAGE DISPLAYING METHOD


Patent No. 9,838,655
Issue Date December 05, 2017
Title Projector And Image Displaying Method
Inventorship Atsushi Kato, Tokyo (JP)
Assignee NEC DISPLAY SOLUTIONS, LTD, Tokyo (JP)

Claim of US Patent No. 9,838,655

1. A projector comprising:
a light source;
an image forming unit that includes a pixel area which is configured of a plurality of pixels, the plurality of pixels modulating
light that is emitted from the light source based on an input video signal to form an image;

a projection lens that projects the image that is formed by the image forming unit; and
a control unit that controls an image forming operation of the image forming unit,
wherein the control unit forms a frame image by sequentially forming a plurality of images in which a combined pixel which
is configured of a plurality of pixels is used as a pixel unit,

wherein, with respect to temporally continuous two images from among the plurality of images, the control unit forms one image
at a position that is shifted by a distance that corresponds to a pixel pitch of the pixel area in a predetermined direction
relative to the other image, and

wherein the projection lens has a Modulation Transfer Function (MTF) value, the MTF value being less than a predetermined
value relative to a spatial frequency that is determined by a size of the pixel of the pixel area and being equal to or greater
than the predetermined value relative to spatial frequency that is determined by a size of the combined pixel.