Virtual image display device

Details Virtual image display device Virtual image display device

G - Physics

02

B

G02B 27/00 (2006.01) G02B 27/01 (2006.01)

Patent

CA 2112682

A head-coupled display device (10) for use in presenting electronically generated visual images to a viewer. The device in- cludes a headpiece (12) worn by a viewer, and an image display screen (20) mounted in the headpiece for presenting electronical- ly 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 converting 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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