×

Decentering optical system and optical system using the same

  • US 7,113,349 B2
  • Filed: 08/25/2005
  • Issued: 09/26/2006
  • Est. Priority Date: 08/30/2004
  • Status: Expired due to Fees
First Claim
Patent Images

1. A decentering optical system which takes a substantially parallel beam as input light, comprising:

  • a prism having a medium whose refractive index is greater than 1; and

    four optical surfaces disposed at boundary surfaces of the medium so as to be mutually decentering or to slant, wherein;

    the four optical surfaces form;

    a light-incident surface through which the input light enters;

    at least two internal-reflective surfaces which reflect internally the input light entering inside;

    a splitting surface which splits an optical path of the input light reflected by any one of these internal-reflective surfaces, into a transmission optical path and a reflection optical path; and

    a transmitting surface which emits the input light traveling along the reflection optical path towards an exterior; and

    real images are formed along each of the transmission optical path and the reflection optical path.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×