Measuring apparatus with optically conjugate radiation fulcrum a

Details Measuring apparatus with optically conjugate radiation fulcrum a Measuring apparatus with optically conjugate radiation fulcrum a

1993-05-18

1995-08-29

Rosenberger, Richard A.

Optics: measuring and testing

For optical fiber or waveguide inspection

356338, G01N 2100

Patent

active

054465320

ABSTRACT:
A laser beam from a light source having a laser beam emitting portion and a laser output mirror is applied to an irradiation area in a flow cell by an irradiation optical system. Scattered light and fluorescence radiated by particles flowing through the flow cell are detected by a detector. The vicinity of the laser output mirror which is the fulcrum of the fluctuation of the pointing of the laser beam and the irradiation area are made optically substantially conjugate with each other, and even if the pointing of the laser beam fluctuates, measurement can be effected accurately without being affected thereby.

REFERENCES:
patent: 4942586 (1990-07-01), Lai
patent: 4989977 (1991-02-01), North, Jr.
patent: 5036520 (1991-07-01), Bowman et al.
patent: 5048050 (1991-09-01), Komurasaki
patent: 5055265 (1991-10-01), Finlan
patent: 5093838 (1992-03-01), Kubota
patent: 5198369 (1993-03-01), Itoh et al.

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