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Head-mounted image display apparatus having a prism with an aspherical surface

  • US 5,596,433 A
  • Filed: 04/26/1994
  • Issued: 01/21/1997
  • Est. Priority Date: 04/27/1993
  • Status: Expired due to Term
First Claim
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1. A head-mounted image display apparatus comprising:

  • an image display device for displaying an image, andan ocular optical system for forming an exit pupil to lead said image into an observer'"'"'s eyeball,wherein said ocular optical system includes a prism having a predetermined surface having both reflecting and transmitting functions and being provided at a tilt with respect to an optical axis of light emitted from said image display device,said prism having an aspherical surface on the side thereof which faces said image display device.

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