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Polarizing apparatus employing an optical element inclined at brewster's angle

  • US 4,746,201 A
  • Filed: 01/16/1978
  • Issued: 05/24/1988
  • Est. Priority Date: 03/06/1967
  • Status: Expired due to Term
First Claim
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1. In combination:

  • a source of unpolarized light rays;

    means for directing certain of said unpolarized light rays to multiply traverse a predetermined path;

    an optical element having a first surface; and

    means for mounting said optical element to intersect said unpolarized light rays with a line perpendicular to said first surface inclined to said path substantially at Brewster'"'"'s angle thereby passing one polarization of said light rays and reflecting some of the light rays of the other polarization upon each traversal of said predetermined path.

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