Gaussian beam ray-equivalent modeling and optical design: erratum Robert Herloski, Sidney Marshall, and Ronald Antos

Xerox Corporation, Joseph C. Wilson Center for Technol­ogy, Webster, New York 14580. Received 1 August 1983. 0003-6935/83/203151-01$01.00/0. © Optical Society of America. In both the text and Fig. 6 of Ref. 1, the first element of

the beam expander example was mistakenly identified as a y-direction biconvex cylinder. It should have been identified .as a biconvex spherical lens. Thus the corrections to the text are: (1) the third line in the first paragraph of Sec. III.C on p. 1172 should read: "The first lens is to be a spherical ele­ment, and the second lens is to be an χ -direction cylinder, each lens having a thickness of 6.35 mm and made of BK7 (the index at 632.8 nm is 1.515089)." (2) The last two lines of the first paragraph on p. 1173 should read: "The only hint that was given to the program was that the first lens was specified (and fixed) to be the spherical lens. This was specified knowing that the final solution would put the spherical lens before the χ-cylinder." In addition, Fig. 6 should indicate that the first lens is a spherical lens (with power in both the χ and y directions).

The authors would like to gratefully acknowledge Wai-min Liu of TRW for indicating this discrepancy.

Reference 1. R. Herloski, S. Marshall, and R. Antos, Appl. Opt. 22, 1168

(1983).

15 October 1983 / Vol. 22, No. 20 / APPLIED OPTICS 3151