A head mounted display system

Details A head mounted display system A head mounted display system

G - Physics

02

B

G02B 27/01 (2006.01) G02B 27/00 (2006.01) G02B 5/04 (2006.01) G02B 5/10 (2006.01)

Patent

CA 2160244

A head mounted display system (10) is shown having a single optical el- ement (28). The single optical element (28) has three optical surfaces. An en- trance surface (S1) receives a video im- age directly from a display (26). A re- flective surface (S2) reflects the vieo im- age from the entrance surface (S1) to an exit surface (S3) wherein the user views the video image directly through the exit surface (S3). The three optical surfaces are shaped to generate a virtual image that is magnified, appears at a distance from the user and is substantially free from distortion, astigmatism and chro- matic aberrations. The optical element (28) is adjustably mounted on a frame (12) to accommodate users with different interpupillary distances and to vary the apparent distance between the user and virtual image.

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