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Full company details
CASTECH INC.
MapBldg. 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

High Precision Aspherical Lenses & Acylindrical LensesAspheric 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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