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Patent Searching and Data


Title:
OPTICAL DEVICE FOR OBSERVING SAMPLES ON A SUPPORT, DESIGNED IN PARTICULAR FOR A CYTOMETER
Document Type and Number:
WIPO Patent Application WO2004034122
Kind Code:
A3
Abstract:
The invention concerns an optical device (12) comprising a front surface located on the side of the sample to be observed and a rear surface oriented towards the means for acquiring (18, 19) an image or a user. It further comprises a combination of four aligned lenses. The lenses are arranged in the following sequence from the front rearwards: a plano-convex lens (28), a convexo-concave lens (30), a plano-concave lens (32) and a biconvex lens (34). The plano-concave (32) and the plano-convex lenses are respectively such that they each have a substantially planar surface and a concave surface or convex surface respectively. The invention is applicable to a cell analyzer.

Inventors:
DELAAGE MICHEL (FR)
DELAAGE PIERRE (FR)
LEQUIME MICHEL (FR)
DECAUDIN JEAN-MICHEL (FR)
Application Number:
PCT/FR2003/002930
Publication Date:
May 27, 2004
Filing Date:
October 06, 2003
Export Citation:
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Assignee:
TROPHOS (FR)
DELAAGE MICHEL (FR)
DELAAGE PIERRE (FR)
LEQUIME MICHEL (FR)
DECAUDIN JEAN-MICHEL (FR)
International Classes:
G02B9/36; G02B9/38; G02B11/22; G02B21/02; G02B7/00; (IPC1-7): G02B21/02; G02B9/36; G02B11/22
Domestic Patent References:
WO2001088593A12001-11-22
Foreign References:
US5532879A1996-07-02
GB1388723A1975-03-26
US4257679A1981-03-24
US4984878A1991-01-15
Other References:
PATENT ABSTRACTS OF JAPAN vol. 018, no. 031 (P - 1677) 18 January 1994 (1994-01-18)
See also references of EP 1576406A2
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