[특허]System for scanning a surgical laser beam

System for scanning a surgical laser beam 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	A61N-005/02
출원번호	US-0833604 (1992-02-11)
발명자 / 주소	Fountain William D. (Fremont CA) Knopp Carl F. (San Mateo CA)
출원인 / 주소	Phoenix Laser Systems, Inc. (Fremont CA 02)
인용정보	피인용 횟수 : 105 인용 특허 : 0

초록 ▼

In a laser beam delivery system for a surgical laser beam, steering and scanning of the laser beam along the target in transverse (X and Y) directions is accomplished in a mechanically simple and fast-responding manner. Closely adjacent to the objective lens assembly of the delivery system is a pair of prisms, i.e. a Risley prism or Herschel prism, positioned on the axis of the approaching laser beam. The two prisms, closely spaced, are mounted on separate rotating stages whereby they may be individually rotated about the beam axis. When the prisms are co-rotated, circular scans are produced on the target, in diameters depending on the angular phase between the prisms. Counter rotation of the prisms at equal and opposite speeds will produce a diametric line scan on the target. Any desired complex scan pattern can be achieved using combinations of rotations of the two prisms. Axial compactness and proximity to the objective lens assembly assure that virtually all of the angularly emerging beam from the prism pair passes through the objective lens assembly.

대표청구항 ▼

In a laser delivery system including a laser producing a laser beam directed along a path, and optics including an objective lens for delivering the beam toward a target to be operated upon by the laser beam, a beam steering assembly for directing the laser beam through appropriate patterns traced on the target to effect a particular operation on the target as selected, comprising, a pair of adjacent weak prisms positioned serially in the path of the laser beam, rotating stage means including a rotating stage connected to each prism for enabling rotation of each of the prisms, either together or relative to one another, about a common axis generally aligned with the path of the laser beam approaching the prisms, and motor means connected to each rotating stage for individually controlling and varying the rotational position and the direction and speed of rotation of each prism independently, whereby the rotational position and the direction and speed of rotation of each prism may be independently controlled in accordance with a selected location and pattern desired for tracing of the laser beam on a target, including radial traces, non-radial linear traces, circular or elliptical traces and any other combination of translation and/or rotation of the beam across the target.

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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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System for scanning a surgical laser beam 원문보기

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System for scanning a surgical laser beam 원문보기

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