Title:
高速対数光検出器
Document Type and Number:
Japanese Patent JP4409764
Kind Code:
B2
Abstract:
According to the present invention, a photomultiplier tube is used with a high-speed feedback mechanism to continuously modulate the gain of the tube in response to the size of the input signal. The gain of the tube and the anode current are independently converted to ideal logarithms. These signals are then subtracted from one another to reconstruct a true logarithmic representation of the optical signal. This log-light-level signal has a higher dynamic range and faster temporal response than has previously been achieved by other methods.
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Inventors:
Ralph Tse Wolf
Application Number:
JP2000528841A
Publication Date:
February 03, 2010
Filing Date:
January 08, 1999
Export Citation:
Assignee:
Ralph Tse Wolf
International Classes:
G01J1/42; G01J1/44; H01J43/02; H01J43/30
Domestic Patent References:
| JP7280646A | ||||
| JP59500018A | ||||
| JP59033201B2 |
Foreign References:
| US0377491 |
Attorney, Agent or Firm:
Masatake Shiga
Tadashi Takahashi
Takashi Watanabe
Masakazu Aoyama
Suzuki Mitsuyoshi
Kazuya Nishi
Yasuhiko Murayama
Shinya Mitsuhiro
Tadashi Takahashi
Takashi Watanabe
Masakazu Aoyama
Suzuki Mitsuyoshi
Kazuya Nishi
Yasuhiko Murayama
Shinya Mitsuhiro