Cylindrical Round Fresnel Lens Windows

• Usage: Lighting, Optical
• Type: Rod
• Transmittance: >95%
• Shape: Rod
• Material: Optical Glass
• Lenses Color: Clear
• Model NO.: FW-Glass
• Customized: Customized
• Coating: UV
• Diameter: 1mm-500mm
• Surface Quality: 40/20;60/40
• Coat: Anti-Reflective (Ar) Coatings
• Clear Aperture: >90% of Diameter: >90% of Diameter
• Surface Flatness: 1/4 Lambda
• Transport Package: Electrolytic Capacitor Paper, Foam, Carton
• Specification: customerised
• Trademark: FineWin
• Origin: China

Product Description

Product Description

Cylindrical lens are offered in both plano-concave and plano-convex configurations, they are typically used to focus incoming light to a line, or to change the aspect ratio of an image. Cylinder Lenses are available with positive or negative focal lengths, they are used for the optics, lasers, medical science, electronics, tele-communication and others.

 

Product Parameters

 

Material	N-bk7,H-K9L,Fused Silica,N-SF10,Silicon,CaF2,Sapphire etc.
Length	2~300mm	Centration	<3 arc min
Height	2~300mm	Clear Aperture	>90%
Radius	>1.5mm	Flatness (per 25mm at 632.8nm)	<1.5Lambda(General) <1/4Lambda(High Precision)
Center Thickness	>0.5mm	Irregularity of Fringes	0.2-0.5 Lambda
Focal Length	3~3000mm	Surface Quality(S/D)	60/40,40/20 or better
Size Tolerance(mm)	+/-0.1mm,+/-0.05mm	Chamfer	<0.25mmx45 degree
Center Thichness Tolerance(mm)	+/-0.1mm,+/-0.05mm	Coating	Uncoated,AR,BBAR,Reflective
Focal length Tolerance(mm)	±1%	Design Wavelength	632.8nm