Stepped etalon

Details Stepped etalon Stepped etalon

2005-08-09

2005-08-09

Olsen, Allan (Department: 1763)

Etching a substrate: processes

Forming or treating optical article

C216S041000, C216S067000, C216S080000

Reexamination Certificate

active

06926841

ABSTRACT:
An improved stepped etalon comprises a transparent body having a stepped surface. The lands of the steps are separated by a non-abrupt or softened transition region. This reduces the diffraction of light caused by the step transitions, thereby reducing the dead spot behind the step transition portions where interference prevents accurate measurements of light transmission from being made. Methods for producing a smoothly stepped etalon and for smoothing the step transitions in an abruptly stepped etalon are also disclosed.

REFERENCES:
patent: 5160993 (1992-11-01), Ishikawa et al.
patent: 5289314 (1994-02-01), Siebert
patent: 5293548 (1994-03-01), Siebert
patent: 5784507 (1998-07-01), Holm-Kennedy et al.
patent: 6015976 (2000-01-01), Hatakeyama et al.
L.N. Hadley and D.M. Dennison, “Reflection and Transission Interference Filters”,Journal of the Optical Society of America, vol. 37, Nos. 1-12, 1947, pp. 451-465.
A.F. Turner and O.A. Ullrich, “Continuously Variable Interference Filters,”Journal of the Optical Society of America, vol. 38, Nos. 1-12, 1948, p. 662.

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