Method and device for obtaining a low-noise optical signal

Details Method and device for obtaining a low-noise optical signal Method and device for obtaining a low-noise optical signal

2007-09-04

2007-09-04

Lauchman, Layla G. (Department: 2877)

Optics: measuring and testing

By dispersed light spectroscopy

With background radiation comparison

C356S306000, C356S319000

Reexamination Certificate

active

10756096

ABSTRACT:
The invention relates to a method and a device for obtaining a low-noise optical signal.According to the method, a luminous beam is injected through two apertures and after detection respectively a basic optical signal (21) and a corrective optical signal (22) are generated. Both optical signals obtained (21, 22) are subtracted, so that a resulting optical signal is generated, forming the low-noise optical signal. The apertures are preferably two slits of a spectroscope, the optical signals being expressible relative to the wavelength.

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