Self aligning substrate transmittance meter

Details Self aligning substrate transmittance meter Self aligning substrate transmittance meter

1995-07-13

1996-12-24

Gonzalez, Frank

Optics: measuring and testing

For light transmission or absorption

356244, 359903, G01N 2100

Patent

active

055877958

ABSTRACT:
A portable substrate transmittance meter includes a remote transmitter and a remoter receiver for measuring a light transmittance of a substrate that does not have an edge available for sliding a base meter thereover, for example a fixed window on a vehicle. The remote transmitter is releasably attached to one side of the window with a donut shaped magnet resting thereagainst. The remote transmitter includes a light transmitter for emitting a predetermined light signal through a center of the donut shaped magnets and on through the fixed window. The remote receiver is place on the other side of the fixed window opposite the remote transmitter. Donut shaped magnets of the remote receiver cause the remote receiver to attract towards the remote transmitter in proper alignment therewith. A light receiver of the remote receiver receives the transmitted light for effecting a transmittance measurement of the fixed window.

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