Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Reexamination Certificate
2005-12-13
2005-12-13
Luu, Thanh X. (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Photocell controls its own optical systems
C359S368000
Reexamination Certificate
active
06974938
ABSTRACT:
The apparatus for automatically focusing an image in a microscope includes onto an object plane includes an optical system configured to form an optical image of a sample plane to be observed, an autofocusing detection system, and a focus correction system. The autofocusing system includes an autofocusing light beam source for generating autofocusing light beams. The autofocusing system further includes a detection system lens for directing autofocusing light beams to an autofocusing detection device, and an autofocusing detection device for determining the amount of displacement of the image of the object plane from a desired focused reference plane. The focusing correction system includes a feedback controller and focus adjusting device for automatically adjusting the distance between an objective lens and the sample plane in order to properly focus the image in the optical system. A related method of automatically focusing an image of an object plane in a microscope is also provided.
REFERENCES:
patent: 3721827 (1973-03-01), Reinheimer
patent: 3816930 (1974-06-01), Edenholm
patent: 4025785 (1977-05-01), Mueller
patent: 4163150 (1979-07-01), Stankewitz
patent: 4186480 (1980-02-01), Binder Kriegelstein et al.
patent: 4311904 (1982-01-01), Okada et al.
patent: 4387975 (1983-06-01), Araki
patent: 4433235 (1984-02-01), Akiyama et al.
patent: 4450547 (1984-05-01), Nakamura et al.
patent: 4595829 (1986-06-01), Neumann et al.
patent: 4600831 (1986-07-01), Hutley
patent: 4600832 (1986-07-01), Grund
patent: 4635887 (1987-01-01), Hall et al.
patent: 4639587 (1987-01-01), Chadwick et al.
patent: 4686360 (1987-08-01), Gorgon
patent: 4711537 (1987-12-01), Schindl et al.
patent: 4803352 (1989-02-01), Bierleutgeb
patent: 4935612 (1990-06-01), Bierleutgeb
patent: 4945220 (1990-07-01), Mallory et al.
patent: 4958920 (1990-09-01), Jorgens et al.
patent: 5081349 (1992-01-01), Iwasaki
patent: 5122648 (1992-06-01), Cohen et al.
patent: 5159383 (1992-10-01), Ishida et al.
patent: 5191393 (1993-03-01), Hignette et al.
patent: 5270527 (1993-12-01), Salzmann
patent: 5270763 (1993-12-01), Ogasawara
patent: 5271592 (1993-12-01), Ludwig
patent: 5359417 (1994-10-01), Muller et al.
patent: 5434703 (1995-07-01), Morizumi
patent: 5483055 (1996-01-01), Thompson et al.
patent: 5483079 (1996-01-01), Yonezawa
patent: 5530237 (1996-06-01), Sato et al.
patent: 5672861 (1997-09-01), Fairley et al.
patent: 5710662 (1998-01-01), Nishida
patent: 5783814 (1998-07-01), Fairley et al.
patent: 5804813 (1998-09-01), Wang et al.
patent: 5805335 (1998-09-01), Fukaya et al.
patent: 5811821 (1998-09-01), Alexander et al.
patent: 5877489 (1999-03-01), Ortyn et al.
patent: 5886813 (1999-03-01), Nagasawa
patent: 5892622 (1999-04-01), Abe
patent: 5925874 (1999-07-01), Liegel et al.
patent: 5995143 (1999-11-01), Price et al.
patent: 6021991 (2000-02-01), Mayama et al.
patent: 6111647 (2000-08-01), Ogura et al.
patent: 6636262 (2003-10-01), Okajima et al.
patent: 6738189 (2004-05-01), Ulrich et al.
patent: 2003/0142396 (2003-07-01), Leblans
patent: 3328821 (1985-02-01), None
patent: 3446727 (1986-07-01), None
patent: 3446727 (1986-07-01), None
patent: 3739223 (1989-06-01), None
patent: 3328821 (1995-02-01), None
patent: 2620537 (1989-03-01), None
patent: 2620537 (1991-07-01), None
patent: 2750221 (1997-12-01), None
patent: 1401179 (1975-07-01), None
patent: 1545437 (1979-05-01), None
patent: 2076176 (1981-11-01), None
patent: 57064712 (1982-04-01), None
patent: 57192909 (1982-11-01), None
patent: 58160907 (1983-09-01), None
patent: 60118814 (1985-06-01), None
patent: 60217322 (1985-10-01), None
patent: 61143709 (1986-07-01), None
patent: WO92/06359 (1992-04-01), None
H Harms and H.M. Aus, “Comparison of Digital Focus Criteria for a TV Microscope System”, Cytometry 5, pp. 236-241 (1984).
F. C.A. Groen, I. T. Young, and G. Ligthart, “A Comparison of Different Focus Functions for Use in Autofocus Algorithms”, Cytometry 6, pp. 81-91 (1985).
L. Firestone, K. Cook, K. Culp, N. Talsania, and K. Preston, Jr., “Comparison of Autofocus Methods for Automated Microscopy”, Cytometry 12, pp. 195-206 (1991).
J.H. Price and D.A. Gough, “Comparison of Phase-Contrast and Fluorescence Digital Autofocus for Scanning Microscopy”, Cytometry 16, pp. 283-297 (1994).
M.A. Kujoory, B.H. Mayall and M.L. Mendelsohn, “Focus-Assit Device for a Flying-Spot Microscope”. IEEE Transactions on Biomedical Engineering, vol. 20(2), pp. 126-132 (1973).
Http://www.ee.washington.edu/conselec/CE/kuhn/edmulti/cdhome.gif, “Memory and Storage”, editors of Time Life Books (1990).
E.T. Johnson and L.J. Goforth, Metaphase Spread Detection and Focus Using Closed Circuit Television, Journal of Histochemistry and Cytochemistry, 22(7), pp. 536-545 (1974).
Leblans Marc Jean Rene
Van Donink Philip Arthur
Tibotec BVBA
Woodcock & Washburn LLP
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