Changchun Hengyi Optics Co., Ltd could manufacture various spheric Lenses, such as BK7 plano-convex lenses,BK7 Bi-convex lenses, BK7 Plano-Concave Lenses, BK7 Bi-Concave Lenses, BK7 Meniscus Lenses,Achromatic Doublets,  Air-Spaced Achromatic Doublets, Fused Silica Plano-Convex Lenses, etc.

BK7 Plano-Convex Lenses

Material: BK7grade A, fine annealed
Focal Length (f'): ±2%
Diameter (F): -0.10mm
Center Thickness (Tc): ±0.1mm
Centration: 3 arc minutes
Fringes: 1~5
Irregularity of Fringes: 0.1~0.5
Surface Quality: 20-10 scratch-dig
Coating: MgF2AR coated
Clear Aperture: 90% F

BK7 Bi-Convex Lenses

Material: BK7 grade A, fine annealed   
Focal Length (f'): ±2%
Diameter (F): -0.10mm
Center Thickness (Tc): ±0.1mm
Centration: 3 arc minutes
Fringes: 1~5
Irregularity of Fringes: 0.1~0.5
Surface Quality:20-10 scratch-dig
Coating: MgF2AR coated
Clear Aperture: 90% F

BK7 Plano-Concave Lenses

Material: BK7 grade A, fine annealed
Focal Length (f'): ±2%
Diameter (F): -0.10mm
Center Thickness (Tc): ±0.1mm
Centration: 3 arc minutes
Fringes: 1~5
Irregularity of Fringes: 0.1~0.5
Surface Quality:20-10 scratch-dig
Coating: MgF2 AR coated
Clear Aperture: 90% F

BK7 Bi-Concave Lenses

Material: BK7 grade A, fine annealed
Focal Length (f'): ±2%
Diameter (F): -0.10mm
Center Thickness (Tc): ±0.1mm
Centration: 3 arc minutes
Fringes: 1~5
Irregularity of Fringes: 0.1~0.5
Surface Quality: 20-10 scratch-dig
Coating: MgF2 AR coated
Clear Aperture: 90% F

 
BK7 Meniscus Lenses

Material: BK7 grade A, fine annealed
Focal Length (f'): ±2%
Diameter (F): -0.10mm
Center Thickness (Tc): ±0.1mm
Centration: 3 arc minutes
Fringes: 1~5
Irregularity of Fringes: 0.1~0.5
Surface Quality: 20-10 scratch-dig
Coating: MgF2 AR coated
Clear Aperture: 90% F