Light measurement apparatus

Details Light measurement apparatus Light measurement apparatus

G - Physics

01

N

G01N 21/15 (2006.01) G01J 3/02 (2006.01) G01N 21/25 (2006.01) G01N 21/78 (2006.01) G02B 7/20 (2006.01)

Patent

CA 2138040

The invention provides light measurement apparatus comprising an elongate member (1), said elongate member having at one end thereof light-emitting means (6) and light-detecting means (7), at least the end of said elongate member provided with said light-emitting means (6) and said light-detecting means (7) being surrounded by a resiliently biassed sheath (8) whereby in use when said elongate member (1) is applied to a surface to take a reading said sheath (8) defines a light-tight enclosure.

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