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Optical arrangement having a concave mirror or concave grating

  • US 4,707,056 A
  • Filed: 12/12/1985
  • Issued: 11/17/1987
  • Est. Priority Date: 12/21/1984
  • Status: Expired due to Fees
First Claim
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1. An optical arrangement comprising:

  • light-receiving means having a receiving surface for receiving reflected light thereon;

    concave reflecting means for reflecting light from an object surface to form an image thereof on said receiving surface; and

    ,a slab waveguide disposed directly adjoining one of said surfaces for correcting any astigmatism associated with said reflecting means.

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