[특허]Optical radar system

[미국특허] Optical radar system 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G01C-003/08
출원번호	US-0791580 (1985-10-25)
발명자 / 주소	Preikschat Fritz K. (16020 Lake Hills Blvd. Bellevue WA 98008) Preikschat Ekhard (9048 NE. 41st St. Bellevue WA 98004)
인용정보	피인용 횟수 : 22 인용 특허 : 19

초록 ▼

An optical radar system comprising a transmitter (20), a receiver (22), a signal processor (200) and means (202, 206) for conveying a return signal from the receiver to the signal processor. The transmitter comprises a laser diode (50), an avalanche transistor (52), a capacitor (56) and a trigger generator (58). The laser diode, avalanche transistor and capacitor are arranged so as to minimize the combined effects of self-inductance and stray capacitance, thereby enhancing the speed and power of the optical pulses. The receiver comprises a reverse biased photodiode capacitively coupled to a dual gate GaAsFET. The transmitter and reciever are connected to the signal processor via coaxial cable (206) and cable amplifiers (202). The cable amplifiers are selected to compensate for the high frequency attenuation of the coaxial cable, such that the combined cable/cable amplifier transmission system has an essentially flat frequency response up to 1000 MHz.

대표청구항 ▼

A transmitter for an optical radar system, comprising: a metallic heat sink; a laser diode mounted to the heat sink in direct heat transfer thermal relationship thereto, the laser diode having first and second terminals and having its first terminal electrically connected to the heat sink; a capacitor positioned adjacent the heat sink, the capacitor comprising a first plate having direct mechanical and electrical connection to the heat sink and a second plate spaced from the first plate; an avalanche transistor having its collector connected to the second plate and its emitter connected to the second terminal of the laser diode; means for providing a trigger signal to the base of the avalanche transistor; and means for charging the second plate, the direct mechanical and electrical connection of the capacitor to the heat sink minimizing self-inductive impedance and stray capacitance when the capacitor discharges through the laser diode.

이 특허에 인용된 특허 (19) 인용/피인용 타임라인 분석

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Fowler Richard L. (Royal Oak MI) Robin Gary I. (Oak Park MI), Transmitter-receiver system.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] Optical radar system 원문보기