F-&thgr; LENS OPTICAL SYSTEM FOR CO2 LASER MACHINING APPARATUS

이산화탄소 레이저 가공장치용 에프세타 렌즈계

Abstract

PURPOSE: An F-θ lens optical system for a CO2 laser machining apparatus is provided to simultaneously process a plurality of processing points of a work piece, thereby improving work efficiency. CONSTITUTION: An F-θ lens optical system for a CO2 laser machining apparatus comprises first to third lenses(10,20,30) successively arranged from an optical source. The first lens is formed with a convex surface(R1) and a concave surface(R2) and has a positive refractive index. The second lens is formed with a concave surface(R3) and a concave surface(R4) and has a negative refractive index. The third lens is formed with a convex surface(R5) and a convex surface(R6) and has a positive refractive index. When the optical full length of the F-θ lens optical system is T and the post focal length is BFL, 1.3<BFL/T<1.4. When the effective focal length of the F-θ lens optical system is EFL, 0.8<BFL/EFL<0.9.
본 발명에 따른 레이저 가공장치용 F-θ렌즈계는, 레이저광을 발생하는 광원과 피가공물 사이에 F-θ렌즈계를 구비하여 피가공물을 처리하는 가공장치에 있어서, 상기 F-θ렌즈계는, 광원측에서 차례로, 일측은 볼록면이고 타측은 오목면으로 이루어지며 포지티브 굴절력을 갖는 제1 렌즈와; 일측은 오목면이고 타측은 오목면으로 이루어지며 네가티브 굴절력을 갖는 제2 렌즈와; 일측은 볼록면이고 타측은 볼록면으로 이루어지며 포지티브 굴절력을 갖는 제3 렌즈를 포함한다.

Claims

Description

Topics

Download Full PDF Version (Non-Commercial Use)

Patent Citations (2)

    Publication numberPublication dateAssigneeTitle
    KR-20010030071-AApril 16, 2001오카야마 노리오, 스미토모덴키고교가부시키가이샤fΘ LENS
    KR-20070005928-AJanuary 10, 2007올림푸스 가부시키가이샤, 하마마츠 포토닉스 가부시키가이샤Laser processing apparatus

NO-Patent Citations (0)

    Title

Cited By (0)

    Publication numberPublication dateAssigneeTitle