Refractive projecting unit possessing light filter

A technology of projection device and filter film, applied in projection devices, optics, optical components, etc., can solve problems such as difficult to identify information, blurred images, poor display quality, etc.

Inactive Publication Date: 2005-01-26
吕兴增 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the real image projected in this way will be directly interfered by external light
In particular, the incident sunlight during the day often causes insufficient contrast of the image projected by the head-up display device, and the generation of white fog-like images makes it difficult for users to recognize the informati

Method used

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  • Refractive projecting unit possessing light filter
  • Refractive projecting unit possessing light filter
  • Refractive projecting unit possessing light filter

Examples

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Embodiment Construction

[0036] In the refraction projection device of the present invention, the filter film is preferably interposed between the two refractor mirror groups and the display unit; the refraction projection device of the present invention preferably also includes a light source for providing light for display unit; the display unit of the refraction projection device of the present invention is preferably integrated with the light source; the display unit is not limited, preferably a vacuum fluorescent display (VFD); the function of the refracting mirror group is not limited, soft Preferably, it has the functions of concentrating light and magnifying images; the refracting lens group preferably has at least one convex lens, and the refracting lens group is used to deflect the light of the display unit and simultaneously enlarge the light passing through the refracting lens group. Image; the refracting mirror group is preferably two single-convex lenses, and the curvature of the two sing...

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PUM

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Abstract

A refraction projection apparatus with filtering film comprises a display unit; a refractor set to polarizedly refract the passing or reflected light from the display unit; a filtering film close to the refractor set; a virtual image forming set to reflect or refract the light source through the refractor set and form reflection light into a virtual image; the refractor set is located between the display unit and virtual image forming set; the refractor set is at an angle Y with the display unit, which is more than zero and less than ninety degrees.

Description

technical field [0001] The invention relates to a refraction projection device, especially a refraction projection device suitable for transportation vehicles. Background technique [0002] The head up display (head up display) projects important driving information at a position close to the eyes looking forward, so that the driver of a traffic vehicle (such as a car) does not need to look down at the dashboard and ignore the traffic ahead during driving. situation, reducing the possibility of accidents. It has been widely used in automobiles and aircrafts. [0003] The known head-up display device is placed in the space above the dashboard of the car, and is projected onto the windshield of the vehicle to form a real image. However, the real image projected in this way will be directly interfered by external light. In particular, the incident sunlight during the day often causes insufficient contrast of the image projected by the head-up display device, and also include...

Claims

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Application Information

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IPC IPC(8): G02B27/02G03B21/00
Inventor 吕兴增胡锦标
Owner 吕兴增
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