Transmissive display apparatus
First Claim
1. A display apparatus comprising:
- a display device including an imagewise light emitting unit configured to emit imagewise light for displaying an input image as a displayed image, and a display surface member that is disposed in a corresponding manner to the imagewise light emitting unit, that includes a display surface configured to reflect or transmit the input image resulting from emission of the imagewise light by the imagewise light emitting unit, to display the input image as the displayed image, and that is configured to transmit backside ambient light entering from a backside or reflect ambient light entering from a front side;
an observation distance acquiring sensor configured to detect an observation distance between the display surface and an observer who is observing the displayed image on the display surface of the display surface member of the display device;
a display brightness acquiring sensor configured to acquire display brightness of the display device observed by the observer;
an ambient light acquiring sensor configured to detect the ambient light of an environment at the front side from which the observer observes the displayed image on the display surface; and
an image processing unit configured to perform image processing to adjust input spatial frequency characteristics of the input image input to the imagewise light emitting unit based on the display brightness acquired by the display brightness acquiring sensor, the observation distance detected by the observation distance-acquiring sensor, and the ambient light detected by the ambient light-acquiring sensor such that display spatial frequency characteristics of the displayed image as visually recognized under conditions of the display brightness, the observation distance and the ambient light agree with target spatial frequency characteristics serving as a target,wherein the display spatial frequency characteristics represent a relationship between a spectral intensity and a spatial frequency of the displayed image, and the input spatial frequency characteristics represent a relationship between a spectral intensity and a spatial frequency of the input image,wherein the imagewise light emitting unit is a projection unit emitting and projecting imagewise light of the input image onto the display surface of the display surface member of the display device,wherein the display surface member is disposed in a corresponding manner to the projection unit, the display surface member causing projection light of the input image projected by the projection unit to be reflected and displayed on the display surface as the displayed image, and transmitting the backside ambient light entering from the backside,wherein the display device is a projection type display device, andwherein the display brightness acquiring sensor includes a backside ambient light acquiring sensor configured to detect the backside ambient light entering from the backside of the display surface member and a reflection brightness acquiring section configured to acquire reflection brightness, at the display surface, of the projection light of the input image as emitted by the projection unit, the display brightness acquiring sensor obtaining the display brightness of the displayed image on the display surface using transmission brightness of the backside ambient light detected by the backside ambient light acquiring sensor and the reflection brightness of the projection light of the input image.
1 Assignment
0 Petitions
Accused Products
Abstract
A display apparatus comprises a display device including an imagewise light emitting unit that emits imagewise light for displaying an input image, and a display surface member that includes a display surface that displays the input image as a displayed image, and transmits backside ambient light or reflects ambient light; an observation distance detecting section that detects an observation distance between the display surface and an observer; a display brightness acquiring section that acquires display brightness of the display device; an ambient light detecting section that detects the ambient light; and an image processing unit that performs image processing to adjust input spatial frequency characteristics of the input image based on the display brightness, the observation distance, and the ambient light such that display spatial frequency characteristics of the displayed image agree with target spatial frequency characteristics.
-
Citations
17 Claims
-
1. A display apparatus comprising:
-
a display device including an imagewise light emitting unit configured to emit imagewise light for displaying an input image as a displayed image, and a display surface member that is disposed in a corresponding manner to the imagewise light emitting unit, that includes a display surface configured to reflect or transmit the input image resulting from emission of the imagewise light by the imagewise light emitting unit, to display the input image as the displayed image, and that is configured to transmit backside ambient light entering from a backside or reflect ambient light entering from a front side; an observation distance acquiring sensor configured to detect an observation distance between the display surface and an observer who is observing the displayed image on the display surface of the display surface member of the display device; a display brightness acquiring sensor configured to acquire display brightness of the display device observed by the observer; an ambient light acquiring sensor configured to detect the ambient light of an environment at the front side from which the observer observes the displayed image on the display surface; and an image processing unit configured to perform image processing to adjust input spatial frequency characteristics of the input image input to the imagewise light emitting unit based on the display brightness acquired by the display brightness acquiring sensor, the observation distance detected by the observation distance-acquiring sensor, and the ambient light detected by the ambient light-acquiring sensor such that display spatial frequency characteristics of the displayed image as visually recognized under conditions of the display brightness, the observation distance and the ambient light agree with target spatial frequency characteristics serving as a target, wherein the display spatial frequency characteristics represent a relationship between a spectral intensity and a spatial frequency of the displayed image, and the input spatial frequency characteristics represent a relationship between a spectral intensity and a spatial frequency of the input image, wherein the imagewise light emitting unit is a projection unit emitting and projecting imagewise light of the input image onto the display surface of the display surface member of the display device, wherein the display surface member is disposed in a corresponding manner to the projection unit, the display surface member causing projection light of the input image projected by the projection unit to be reflected and displayed on the display surface as the displayed image, and transmitting the backside ambient light entering from the backside, wherein the display device is a projection type display device, and wherein the display brightness acquiring sensor includes a backside ambient light acquiring sensor configured to detect the backside ambient light entering from the backside of the display surface member and a reflection brightness acquiring section configured to acquire reflection brightness, at the display surface, of the projection light of the input image as emitted by the projection unit, the display brightness acquiring sensor obtaining the display brightness of the displayed image on the display surface using transmission brightness of the backside ambient light detected by the backside ambient light acquiring sensor and the reflection brightness of the projection light of the input image. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
-
Specification