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VIRTUAL IMAGE DISPLAY APPARATUS

  • US 20130222896A1
  • Filed: 02/21/2013
  • Published: 08/29/2013
  • Est. Priority Date: 02/24/2012
  • Status: Active Grant
First Claim
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1. A virtual image display apparatus that causes an observer to visually recognize image light and external light at the same time, comprising:

  • an image element that generates image light; and

    a single prism that has three or more non-axisymmetric curved surfaces and forms a part of an optical system, in which an intermediate image is formed therein,wherein when the observer visually recognizes an external scene through a first surface and a third surface among the plurality of surfaces that form the prism, diopter is about 0,wherein the first surface and the third surface form concave surfaces with respect to the observer, andwherein the image light from the image element is totally reflected on the third surface, is totally reflected on the first surface, and is reflected on a second surface and then passes through the first surface to reach the observer.

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