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Optical Apparatus and Method for Expanding an Exit Pupil

  • US 20130314789A1
  • Filed: 03/04/2010
  • Published: 11/28/2013
  • Est. Priority Date: 03/04/2010
  • Status: Active Grant
First Claim
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1. An apparatus, comprising:

  • a first optical arrangement configured to couple a first component of a light beam into the apparatus, the first component of the light beam having a wavelength within a first spectral range;

    a second optical arrangement configured to couple a second component of the light beam into the apparatus, the second component of the light beam having a wavelength within a second spectral range, different to the first spectral range;

    a third optical arrangement configured to expand the first component of the light beam in a first dimension to create an expanded first component;

    a fourth optical arrangement configured to expand, in a second dimension, the expanded first component to create a further expanded first component, and configured to output the further expanded first component of the light beam from the apparatus;

    a fifth optical arrangement configured to expand the second component of the light beam in the second dimension to create an expanded second component; and

    a sixth optical arrangement configured to expand, in the first dimension, the expanded second component to create a further expanded second component, and configured to output the further expanded second component from the apparatus.

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