Title:
【発明の名称】光電検出器の非線形補正技術
Document Type and Number:
Japanese Patent JPH07501399
Kind Code:
A
Abstract:
A technique that corrects photodetector non-linearity without increasing the noise level in the detector signal. The detector is coupled to a preamplifier characterized by the absence of positive feedback, and the preamplifier signal is communicated to a linear amplifier whose output signal is then digitized. The digitized signal is then transformed according to stored calibration information that is representative of the non-linear characteristic of the photodetector. The transformed digitized value thus exhibits a linear characteristic as a function of the intensity of the light source. A number of embodiments perform the correction in hardware before digitizing the signal.
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Inventors:
Carver Raoul
Application Number:
JP50926093A
Publication Date:
February 09, 1995
Filing Date:
October 21, 1992
Export Citation:
Assignee:
Baiorad Laboratories, Inc.
International Classes:
G01N21/27; H01J40/14; G01J3/45; H01J43/30; H03G11/08; G01J1/08; G01J3/453; (IPC1-7): G01J3/45; H01J40/14; H01J43/30; H03G11/08
Attorney, Agent or Firm:
Hiroo Suzuki