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Home » Products » Spherical Lens

Spherical Lens

Spherical Lens is available in spherical shape to focus beam as well as expansion. As the lens doesn't focus parallel rays to a common point, its "focus" depends on the distance from the centre of the lens. This phenomenon of "focus shift" helps focusing the image with the diaphragm that is wide open. It is widely used in different applications; hence it should be selected carefully. It should be chosen on the basis of f/number, conjugate ratio, lens material, transmission, etc. In addition, wave front distortion, types of coating and scattered light also keep in mind.
This precision lenses is developed from high-quality optical materials for high transmittance. It is designed with careful considerations to ensure to provide the fine shape to the lenses and shapes. It is available with high surface exactness and surface quality. It is used as shaving mirrors, reflectors in the headlights of vehicles, street light bulbs, search lights, etc.

Features of Spherical Lens:
  • High quality anti-reflection coatings are available
  • Designed to suit a range of wavelengths from UV, visible, NIR, and MIR
  • Available with positive focal length in best-form shape
  • Damage proof design with fine cut and shape
Plano convex lens
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Plano convex lens
12
  • Material:Optical glass, Fused silica, CaF2, Si, Ge, etc.
  • Diameter:1-500mm
  • Diameter Tolerance:+0/-0.05mm
  • Clear aperture:> 90% of diameter
  • Thickness Tolerance:+/-0.05mm
  • Radius:2 - 50000mm
  • Radius Tolerance:+/-0.1%
  • Centration:30 arc seconds
  • Surface Quality:20-10 scratch and dig
  • Power:0.5 fringe
  • Irregularity:0.2 fringe
  • Coating:with or without AR coating
  • Bevel:Protective bevel 
Plano concave lens
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Plano concave lens
13
  • Material: BK7, FS, UVFS, CaF2, ZnSe, Si, Ge
  • Diameter Tolerance: +0/-0.1 mm
  • Thickness Tolerance: ±0.1 mm
  • Clear Aperture: >90%
  • Focal length Tolerance: ±3%
  • Design Wavelength: 632.8 nm
  • Surface Quality: 40-20 S-D
  • Surface Figure: <λ/4 @ 632.8 nm
  • Centration Error: <3 arcmin
  • Protective Chamfers: <0.25 mm x 45°
Double convex lens
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Double convex lens
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  • Material:BK7, FS, UVFS, CaF2, ZnSe, Si, Ge
  • Diameter tolerance:+0.0/-0.1 mm
  • Thickness Tolerance:±0.1 mm
  • Clear Aperture:>90%
  • Focal Length Tolerance:±3 %
  • Design Wavelength: 632.8 nm
  • Surface Quality:40-20 S-D
  • Surface Figure:<λ/4 @ 632.8 nm
  • Centration Error:<3 arcmin
  • Protective Chamfers:<0.25 mm x 45°
  • Coatings: Available on request

Double concave lens
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Double concave lens
15
  • Material:BK7, FS, UVFS, CaF2, ZnSe, Si, Ge
  • Diameter Tolerance:+0.0/-0.1 mm
  • Thickness Tolerance:±0.1 mm
  • Clear Aperture:>90%
  • Focal Length Tolerance: ±3 %
  • Design Wavelength: 632.8 nm
  • Surface Quality:40-20 S-D
  • Surface figure:<λ/4 @ 632.8 nm
  • Centration Error:<3 arcmin
  • Protective Chamfers:<0.25 mm x 45°
  • Coatings: Available on request
Positive Meniscus Lens
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Positive Meniscus Lens
01
  • Material :BK7, FS, UVFS, CaF2, ZnSe
  • Diameter Tolerance :0/-0.1 mm
  • Thickness Tolerance :±0.5 mm
  • Clear Aperture:>90%
  • ROC Tolerance:±1 %
  • Design Wavelength:    632.8 nm
  • Surface Quality:40-20 S-D
  • Surface Figure :<λ/4 @ 632.8 nm
  • Centration Error:<3 arcmin
  • Protective Chamfers:<0.25 mm x 45°
  • Coatings: According to requirement
Negative Meniscus Lens
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Negative Meniscus Lens
02
  • Back vertex power ±0.06D (≤4D)  
  • (=/back FL):0.12D (>4D)
  • Diameter: +0, -0.25mm (25mm)
  • ±1mm (60/65mm)
  • Material Used:K7,B270,SF11,UV Silica,Sapphire,LEBG,Float Glass,Acrylic
Achromatic lens
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Achromatic lens
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  • Material:Crown Glass And Flint Glass
  • Diameter:2-200mm
  • Diameter Tolerance:+0/-0.05mm
  • Clear Aperture:90% Of Diameter
  • Thickness Tolerance:+/-0.05mm
  • Radius:>2mm
  • Radius Tolerance:+/-0.1%
  • Centration:3 Minutes
  • Surface Quality:40-20 Scratch And Dig
  • Power:0.5 Fringe
  • Irregularity:0.2 Fringe
  • Coating:With Ar Coating On Outside Surfaces
  • Bevel:Protective Bevel