Fluorescence observing apparatus

Details Fluorescence observing apparatus Fluorescence observing apparatus

2006-05-23

2006-05-23

Robinson, Mark A. (Department: 2872)

Optical: systems and elements

Having significant infrared or ultraviolet property

Multilayer filter or multilayer reflector

C359S368000, C356S417000

Reexamination Certificate

active

07050224

ABSTRACT:
A fluorescence observing apparatus has an excitation filter unit for transmitting only exciting light with particular wavelengths, of illuminating light, and an absorption filter unit for transmitting only fluorescent light produced from a specimen by irradiating the specimen with the exciting light to block the exciting light. In this case, the space between the half-value wavelength on the long-wavelength side of the excitation filter unit and the half-value wavelength on the short-wavelength side of the absorption filter unit is in the range of 6–12 nm, and variations in the half-value wavelengths of the excitation filter unit and the absorption filter unit where humidity is changed from 10% to 95% are within 0.5 nm. Whereby, faint fluorescent light is efficiently taken out and the observation can be made.

REFERENCES:
patent: 5408996 (1995-04-01), Salb
patent: 5710663 (1998-01-01), Kawasaki
patent: 6809859 (2004-10-01), Erdogan et al.
patent: 10-239517 (1998-09-01), None

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