Integrated imaging and ranging lidar receiver

Details Integrated imaging and ranging lidar receiver Integrated imaging and ranging lidar receiver

1992-02-05

1993-03-30

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

356 5, H01J 3150

Patent

active

051986574

ABSTRACT:
An integrated LIDAR receiver includes a single detection element to provide both imaging and ranging functions. The single detection element includes an opaque photocathode, a microchannel plate (MCP) electron multiplier, and a phosphor coated anode covered with a metalized layer. The metalized layer on the phosphor anode allows electrons striking the anode to be detected as a prompt electrical current and used as a first output signal to provide ranging information. Visible light (photons) is also output from the anode in response to electrons striking the phosphor in the anode, and is used to provide an intensified image of a scene. The visible light may thereafter be detected by an imaging sensor, such as a CCD camera. The phosphor anode is biased at ground potential. A transimpedance amplifier is coupled to the metalized layer on the phosphor anode and, with the anode being at ground potential, operates with a virtual null input.

REFERENCES:
patent: 4603250 (1986-07-01), Contini et al.
patent: 4727427 (1988-02-01), Kline
patent: 4935616 (1990-06-01), Scott
patent: 5029009 (1991-07-01), Ulich et al.
patent: 5049730 (1991-09-01), Loveland

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