公开(公告)号：US20150339961A1

公开(公告)日：2015-11-26

申请号：US14819763

申请日：2015-08-06

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kenichi KASAZUMI ,  Keiji SUGIYAMA ,  Kakuya YAMAMOTO

IPC: G09G3/02 ,  G02B26/08 ,  G02B5/18 ,  G03H1/22

CPC classification number: G09G3/02 ,  G02B5/1842 ,  G02B26/0808 ,  G02B27/2271 ,  G03H1/2286 ,  G03H1/2294 ,  G03H2222/18 ,  G03H2240/51 ,  G09G3/3611 ,  G09G2320/0233 ,  G09G2320/0626 ,  G09G2320/0646 ,  G09G2360/16

Abstract: An image display apparatus, including: a light source which emits coherent light; a spatial modulation element which diffracts the coherent light by displaying a diffraction grating pattern corresponding to an input image and which displays a virtual image by the diffracted light; and a control unit which calculates a total brightness representing a sum total of brightnesses of all pixels of the input image, and controls at least one of the light source and the spatial modulation element in such a manner that, if the total brightness has decreased, the virtual image is displayed at a lower brightness than a reference virtual image displayed when the input image is used directly.

Abstract translation: 一种图像显示装置，包括：发出相干光的光源; 空间调制元件，其通过显示与输入图像相对应的衍射光栅图案衍射相干光，并且通过衍射光显示虚像; 以及控制单元，其计算表示输入图像的所有像素的亮度的总和的总亮度，并且以这样的方式控制光源和空间调制元件中的至少一个，使得如果总亮度降低， 虚拟图像以比直接使用输入图像时显示的参考虚拟图像低的亮度显示。