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image display device

An image display device, image projection technology, applied in image communication, projection device, static indicator and other directions, to achieve the effect of improving the safety of use

Active Publication Date: 2020-06-05
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Patent Document 1 discloses a technique by which it is possible to solve a safety problem in that, with regard to a projector including a laser light source, the eyes of a user or an image observer are exposed to projected light with high luminance (for example, Patent Document 1 paragraph [0055] of figure 2 Wait)

Method used

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Embodiment approach

[0176] The present technology is not limited to the above-described embodiments, and various other embodiments can be implemented.

[0177] For example, Figure 9 is a schematic diagram showing another example of a hazard notification image. It should be noted that the image display device is assumed to be equipped with any distance sensor capable of measuring the distance from the emission surface.

[0178] In this example, the distance to the screen on which the image is projected is calculated. Based on this distance, screen 820 is displayed in hazard notification image 800 . Furthermore, in the danger notification image 800 , a scale 821 including the distance to the screen 800 is displayed. This display enables the user to sense the arrangement relationship from the projector 822 to the screen, the reference distance x, the positional relationship between the warning-required area 825 and the safety area 826 , and the like.

[0179] Also, in this example, an obstacle ...

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Abstract

According to an embodiment of the present technology, an image display device is equipped with an image display unit, a calculator, and a notification section. The image display unit includes an emission surface, and displays an image by emitting light from the emission surface. The calculator calculates a reference distance from the emission surface, the reference distance serving as a determination standard of the influence of the emission light emitted from the image projection portion. The notification section notifies information on the influence of emitted light based on the calculated reference distance.

Description

technical field [0001] The present technology relates to an image display device such as a projector. Background technique [0002] Conventionally, image display devices such as projectors have been widely used. For example, light from a light source is modulated by a light modulator such as a liquid crystal device, and the modulated light is projected on a screen or the like so that an image is displayed. A reflective liquid crystal display device, a transmissive liquid crystal device, a DMD (Digital Micromirror Device), etc. are used as the light modulator. [0003] As projectors for presentations or digital movies, more and more products recently use solid-state light sources such as LEDs (Light Emitting Diodes) and LDs (Laser Diodes) instead of conventional mercury vapor lamps, xenon lamps, etc. as light sources. Increasing brightness is relatively easy for solid-state light sources such as LEDs and LDs. Solid state light sources are long-lasting, which results in les...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/74G03B21/14G09G3/20G09G5/00
CPCG03B21/2086G09G3/001G09G3/346G09G2330/021H04N9/3194G09G3/002G09G2354/00
Inventor 三桥正示
Owner SONY CORP