Optical: systems and elements – Lens – Multiple component lenses
Patent
1997-02-18
1998-06-02
Epps, Georgia Y.
Optical: systems and elements
Lens
Multiple component lenses
359722, 359723, G02B 962, G02B 300
Patent
active
057609748
ABSTRACT:
An optical lens system includes a multi-element lens designed to maximize light collection efficiency and transmission but accepting a sufficiently high level of distortion to forego the system from imaging light patterns at each of a set of wavelengths at which the patterns are being emitted from a planar source simultaneously. The system also illustratively includes a cooled CCD camera with a dewar and filter assembly which is movable along the optic axis of the system to specified positions for selecting a particular wavelength at which an image is in focus so that the light pattern (image) at each different wavelength can be captured at a different time. A CCD camera is used to capture the image and the camera controller includes software to reduce the amount of distortion introduced by the lens. The light transmission of the system is essentially double that of prior art systems and is particularly useful for electropheresis applications where data is gathered at discrete wavelengths and is also useful for X-ray applications.
REFERENCES:
patent: 5142557 (1992-08-01), Toker et al.
patent: 5465284 (1995-11-01), Karellas
patent: 5692507 (1997-12-01), Seppi et al.
Epps Georgia Y.
Photometrics Ltd.
Schwartz Jordan M.
Shapiro Herbert M.
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