F- LENS OPTICAL SYSTEM FOR CO2 LASER MACHINING APPARATUS

PURPOSE: An F- 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- lens optical system for a CO2 laser machining apparatus comprises first to third lense...

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Bibliographic Details
Main Authors KANG, MIN HO, KIM, WOO SOON, KIM, JU HWAN
Format Patent
LanguageEnglish
Korean
Published 18.06.2012
Subjects
CLADDING OR PLATING BY SOLDERING OR WELDING
CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING
MACHINE TOOLS
METAL-WORKING NOT OTHERWISE PROVIDED FOR
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PERFORMING OPERATIONS
PHYSICS
SOLDERING OR UNSOLDERING
TRANSPORTING
WELDING
WORKING BY LASER BEAM
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Summary:PURPOSE: An F- 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- 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- 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- lens optical system is EFL, 0.8<BFL/EFL<0.9.
Bibliography:Application Number: KR20110114859