Microscope base illuminator

Details Microscope base illuminator Microscope base illuminator

1989-05-17

1990-09-11

Henry, Jon W.

Illumination

Supported by vehicle structure

Condition responsive

362216, G02B 2106

Patent

active

049559788

ABSTRACT:
A illuminator base for illumination of a microscope specimen from below the specimen includes a fluorescent lamp bulb for generation of illuminating light on a viewing axis. The fluorescent lamp bulb has at least two arms, each having an active volume within a glass wall. The arms are disposed with each active volume generally tangent to the viewing axis. A line intersecting the viewing axis and the axes of lamp arms lies at an acute angle to the viewing axis. Preferably the lamp bulb is u-shape, the angle is about 40.degree. and 50.degree., and light transmitted by the lamp arms along the viewing axis is substantially without shadow.

REFERENCES:
patent: 3634681 (1972-01-01), Johnson et al.
patent: 3933408 (1976-01-01), Reinert
patent: 4598343 (1986-07-01), Sorrell
patent: 4771370 (1988-09-01), Lowe et al.

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