Retroreflective systems for remote readout

Details Retroreflective systems for remote readout Retroreflective systems for remote readout

1997-02-25

1998-10-13

Font, Frank G.

Optics: measuring and testing

Of light reflection

356448, 374161, G01N 2155, G01K 1100

Patent

active

058220747

ABSTRACT:
A sensing device for sensing an environmental factor. The device includes a retroreflective layer disposed in a parallel, facing relationship with a sensing layer. The sensing layer has an initial optical absorption capacity for (i) sensing a presence of an environmental factor, (ii) experiencing a change in optical absorption capacity responsive to said environmental factor, and (iii) transmitting and attenuating light. A first portion of the sensing layer is sealed off from exposure to the environment while a second portion remains exposed to the environment such that, when the environmental factor is present, the first portion of the sensing layer is prevented from experiencing a change in optical absorption capacity responsive to said environmental factor. Well-collimated light beams are passed through the sensing layer and are reflected back from the retroreflective layer for processing. When the environmental factor is present, the beams which pass through the second portion are attenuated responsive to an increase in optical absorption capacity and are compared with the non-attenuated beams passing through the first portion to calculate the presence and quantity of the environmental factor.

REFERENCES:
patent: 3575515 (1971-04-01), Fertig
patent: 3992096 (1976-11-01), Oliveira
patent: 4085314 (1978-04-01), Schultz et al.
patent: 4099886 (1978-07-01), Oliveira
patent: 4491923 (1985-01-01), Look
patent: 5260556 (1993-11-01), Lake et al.
patent: 5444230 (1995-08-01), Baldwin et al.
patent: 5477219 (1995-12-01), Zarembo et al.
patent: 5683180 (1997-11-01), De Lyon et al.

Affiliated with

Also associated with

Rating

Retroreflective systems for remote readout does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Retroreflective systems for remote readout, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Retroreflective systems for remote readout will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-318742