Full company details
CASTECH INC.
Bldg. No. 9, Zone F
89 Ruanjian Ave.
Fuzhou, Fujian 350003
China
Phone: +86 591 8371 0533
Fax: +86 591 8371 1593
High-Precision Aspherical Lenses & Acylindrical Lenses
Aspheric lenses have its advantages in a range of applications where eliminated spherical aberration or (and) single-element design is required. CASTECH offers CNC precision-polished aspherical and acylindrical lenses, with or without anti-reflection (AR) coatings. Our CNC polished aspheric lenses are iteratively ground and polished by a software supported computer-controlled processing center to provide better controlled surface quality, irregularity, and focal length deviation.
CASTECH employs rigorous verification procedures to guarantee the high performance of each of our aspheric lenses. A Form Talysurf PGI profilometer allows contact measurement in grinding process while Taylor Hobson LuphoScan 260 non-contact 3D optical surface profilometer performs ultra-precision optical surfaces form measurement in polishing process.
Common Specifications:
Material from DUV to IR
Custom dimension and shapes
Diameter from 5 to 200 mm
Clear aperture: Central 90% of diameter
Irregularity : λ/[email protected]
Surface quality: 20-10 S/D
Centration: <3′ Standard and custom coating options available
High laser damage threshold
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