Compact optical system and packaging for head mounted display

Details Compact optical system and packaging for head mounted display Compact optical system and packaging for head mounted display

G - Physics

02

B

G02B 27/01 (2006.01) G02B 27/18 (2006.01)

Patent

CA 2349650

A head mounted virtual image display unit is provided which is compact in size and weight, and incorporates a high performance optical system offering a clear see- through capability. A sliding light shield may be incorporated for those instances when see-through capability is not desired. A focus adjustment may be incorporated to permit the focusing of the image, for example, at a distance of approximately 18 inches to infinity. An adjustable headband may be incorporated that adapts to fit the users head. A flexible boom structure may be incorporated to facilitate fine positional adjustment of the optical assembly. A slider and ball joint mechanism may also be incorporated to facilitate positional adjustment of the optical assembly. A built-in microphone may be incorporated to enable speech input by the user. The head mounted virtual image display unit may be used comfortably in conjunction with eye or safety glasses, and provides a useful image to the user without blocking his view of the surrounding environment. The unit is designed to have a pleasing appearance so as to greatly enhance user acceptability.

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