Virtual image display device

Details Virtual image display device Virtual image display device

1994-12-08

1998-08-25

Hjerpe, Richard

Computer graphics processing and selective visual display system

Image superposition by optical means

Operator body-mounted heads-up display

345 32, 359742, G09G 500, G02B 308

Patent

active

057987394

ABSTRACT:
A head-coupled display device for use in presenting electronically generated visual images to a viewer. The device includes a headpiece worn by a viewer, and an image display screen mounted in the headpiece for presenting electronically generated images. A fresnel lens is positioned adjacent the screen for focusing images from the screen at a selected position for viewing as a virtual image. The lens has a set of concentric converging rings whose surface curvatures act to minimize rectilinear distortion of the virtual images perceived by the viewer over the entire field of view of the image.

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