Optical: systems and elements – Holographic system or element – Using a hologram as an optical element
Reexamination Certificate
2008-04-08
2008-04-08
Lavarias, Arnel (Department: 2872)
Optical: systems and elements
Holographic system or element
Using a hologram as an optical element
C359S019000
Reexamination Certificate
active
11197796
ABSTRACT:
A narrowband, tunable filter with a wide acceptance angle utilizes two holographic filter elements connected in series. The filter blocks light outside of a narrow spectral band of interest, while enabling light to be seen over a wide range of angles incident on the filter.
REFERENCES:
patent: 6069987 (2000-05-01), Sasaki et al.
R. Burzynski, J. F. Weibel, M. K. Casstevens, R. I. Billmers, E. J. Billmers, ‘Holographic wavelength filters based on MEMPLEX Photopolymer’, Proc. SPIE, vol. 4833, pp. 577-583, Jun. 1-6, 2002.
R. I. Billmers, E. J. Billmers, R. Burzynski, J. F. Weibel, L. H. Heverly III, M. K. Casstevens,T. P. Curran, V. M. Contarino, ‘Narrow-band holographic optical filter using thick efficient holographic gratings’, Proc. SPIE, vol. 4659, pp. 156-164, Jan. 21-23, 2002.
R. I. Billmers, E. J. Billmers, M. E. Ludwig, R. Burzynski, J. F. Weibel, M. K. Casstevens, ‘Development of thick volume holographic gratings for narrowband spectral filter applications’, IEEE Conference on Lasers and Electro-optics (IEEE CLEO), vol. 1, May 16-21, 2004.
Billmers Elizabeth J.
Billmers Richard I.
Ludwig Mary E.
Lavarias Arnel
Masters Ted
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