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Spherical Display Brightness Enhanced Projection System

A projection system and spherical display technology, applied in the field of optical projection, can solve problems such as the loss of brightness of spherical display, and achieve the effects of eliminating the loss of luminous flux, improving utilization efficiency and enhancing brightness

Active Publication Date: 2016-01-27
WUXI XIKE NETWORK TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention solves the problem of spherical display brightness loss in the existing spherical projection using fisheye lens, and provides a projection system capable of enhancing spherical display brightness

Method used

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  • Spherical Display Brightness Enhanced Projection System
  • Spherical Display Brightness Enhanced Projection System
  • Spherical Display Brightness Enhanced Projection System

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] like figure 1 As shown, it is a schematic diagram of projection of the spherical display brightness enhancement projection system 1 located at the bottom of the spherical screen 2 . The projection lens 17 is located at the center of the bottom of the dome 2 , and the projection range 111 of the projection lens 17 covers the entire dome 2 , and the image is projected onto the dome 2 so that the dome 2 has no projection blind spot. Preferably, the projection light can just cover the entire dome screen 2 , and at this time, the efficiency of using the light source 11 is the highest while obtaining the best viewing effect.

[0025] like figure 2 Shown is a schematic diagram of a spherical display brightness enhancement projection system.

[0026] The spherical display brightness enhancement projection system sequentially includes a light source 11 , a condenser lens 12 , a color wheel 13 , a brightness enhancement device 14 , a relay lens 15 , a DMD 16 , and a projection...

Embodiment 2

[0030] On the basis of Embodiment 1, the brightness enhancement structure of this embodiment is a cylindrical light rod as a uniform light device located between the color wheel 13 of the projector and the imaging device chip, and the cylindrical light rod replaces the original cuboid Shaped light stick.

[0031] like figure 2 Shown is a schematic diagram of a spherical display brightness enhancement projection system.

[0032] The spherical display brightness enhancement projection system sequentially includes a light source 11 , a condenser lens 12 , a color wheel 13 , a brightness enhancement device 14 , a relay lens 15 , a DMD 16 , and a projection lens 17 in the forward direction of light.

[0033] The light source 11 can be tungsten-halogen incandescent lamp, high-intensity gas discharge lamp (short-arc xenon lamp, dysprosium lamp, double-ended metal halide lamp, ultra-high pressure mercury lamp), white LED, RGB color separation LED. The light source 11 forms a circul...

Embodiment 3

[0040] On the basis of Embodiment 2, the cylindrical light rod is set as a light rod with a certain taper, whose front end is slightly smaller in diameter than the rear end along the light advancing direction. For example, the light rod may be a solid frustum light rod or a hollow frustum light rod.

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Abstract

The invention brings forward a projection system capable of enhancing spherical display brightness, relates to the field of optical projection, and particularly relates to a projection system capable of enhancing spherical display brightness, wherein spherical display is formed by projection of a projector on a ball screen. Problems of loss of display brightness in spherical projection adopting a fish-eye lens are solved by the projection system. The main points of the technical scheme of the invention are that: the projection system capable of enhancing spherical display brightness comprises a light source, a light-splitting device and a projection display device. The light source comprises a lamp, a lamp cup and a brightness enhancing structure. The brightness enhancing structure enables the projection display device to display circular light spots. The projection system is mainly applied to ball screen projection.

Description

Technical field: [0001] The invention relates to the field of optical projection, in particular to a projection system capable of enhancing the brightness of a spherical display formed by projecting a projector onto a spherical screen. Background technique: [0002] Existing projectors mainly adopt single-chip DLP technology and three-chip LCD technology, and their projected light spots are all square light spots. In the spherical display system, the dome lens adopts a fisheye lens for projection, and the vertex is the center of the sphere. The image (projection surface) formed by projecting it onto the dome screen is a spherical surface. For each circular section of the spherical surface, only When the circle is the inscribed circle of the square spot, the maximum utilization of the projected light can be achieved, and the part of the square spot outside the inscribed circle is lost in vain because it cannot be the imaging area. In fact, the brightness and pixel All lost. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03B21/20G03B21/00G02B27/09
Inventor 陈龙
Owner WUXI XIKE NETWORK TECH
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