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Image projection module and image projection device provided with such module

A technology of image projection and reflection device, applied in image communication, parts of color TV, parts of TV system, etc., can solve problems such as harsh requirements, increased complexity, and complex image projection device

Inactive Publication Date: 2003-07-23
VOLVO CONSTR EQUIP KOREA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a shortcoming is that the image projection device realized in these ways is more complicated
This complexity will increase with further miniaturization as the requirements for positioning and fabricating the different components will become more stringent

Method used

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  • Image projection module and image projection device provided with such module
  • Image projection module and image projection device provided with such module
  • Image projection module and image projection device provided with such module

Examples

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Embodiment Construction

[0100] The image projection device 1 schematically shown in FIG. 1( a ) includes an image display system 13 and an illumination system 3 that combine to form an image projection module 2 . The illumination system 3 is equipped with a light source 5 partially surrounded by a parabolic reflector 7 followed by a condenser mirror 9 . The light source can also be surrounded by a spherical reflector. In this case, the condenser can be omitted. The illumination system 3 has an exit window 11 . It is an imaginary plane perpendicular to the optical axis of the image projection device 1, relative to which the position of many components can be determined. The exit window 11 may be located just in front of the display panel 15 as seen from the light source 5 .

[0101] The image display system 13 includes a display panel 15 enclosed between two polarizers 25 and 27 . The image projection device 1 also includes a projection lens system 17 , shown as a single lens for clarity, for proj...

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PUM

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Abstract

The invention relates to an image projection module (1) comprising, in this order, an illumination system (3) and an image display system (13) having at least one display panel (15) for modulating an illumination beam to be supplied by the illumination system (3) with image information. The illumination system (3) comprises an integrator system (19) having an exit surface which is located in an exit plane. First reflecting means (33; 43) are present in the exit plane of the integrator system (19) and the module (1) further comprises second, selectively reflecting means (39). An optical system (31) for at least partly imaging the exit surface via the second reflecting means on the first reflecting means is arranged between the first and the second reflecting means. The invention also relates to an image projection means containing the said module (1).

Description

technical field [0001] The invention relates to an image projection module comprising in turn an illumination system comprising a light source and an integrator system whose exit surface is located in the exit plane, and an image display system having at least A display panel for modulating an illuminating light beam with image information from a light source. [0002] The invention also relates to an image projection device comprising such an image projection module. Background technique [0003] An image projection module of the type mentioned in the opening paragraph can be found per se in US-A 5,098,184. The image projection module described in this patent comprises an illumination system for providing an illumination beam and an image display system having at least one display panel for modulating the beam in accordance with the image information to be projected. In addition to the light source, the reflector behind the light source and the condenser lens, the known l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/13G02B27/00G02B27/18G02B27/28G02F1/1335G02F1/13357
CPCG02F1/133621G02F1/133536G02F1/133526G02F2201/343G02F2001/133543G02F1/13362G02F1/133543G02B27/28
Inventor A·J·S·M·德瓦恩A·W·达门
Owner VOLVO CONSTR EQUIP KOREA
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