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Page 4 - Aspherical

Traditionally lens surfaces have been sections of a sphere. For many applications this leaves spherical aberration as the dominant defect of any image so created.   Aspheric lenses are used to correct these image defects.  One solution to this is to have one or both surfaces, departing from the spherical shape. ...

Specifications

Diameter: 3.00 mm
Material: H-ZLaF52
Effective Focal Length: 2.00 mm
Numerical Aperture (NA): 0.50
Wavelength Range: 400-700nm
Data Sheet
Traditionally lens surfaces have been sections of a sphere. For many applications this leaves spherical aberration as the dominant defect of any image so created.   Aspheric lenses are used to correct these image defects.  One solution to this is to have one or both surfaces, departing from the spherical shape. ...

Specifications

Diameter: 6.33 mm
Material: Borosilicate
Effective Focal Length: 4.02 mm
Numerical Aperture (NA): 0.60
Wavelength Range: 300-2000nm
Data Sheet
Traditionally lens surfaces have been sections of a sphere. For many applications this leaves spherical aberration as the dominant defect of any image so created.   Aspheric lenses are used to correct these image defects.  One solution to this is to have one or both surfaces, departing from the spherical shape. ...

Specifications

Diameter: 6.33 mm
Material: H-ZLaF52
Effective Focal Length: 3.10 mm
Numerical Aperture (NA): 0.68
Wavelength Range: 400-700nm
Data Sheet
Traditionally lens surfaces have been sections of a sphere. For many applications this leaves spherical aberration as the dominant defect of any image so created.   Aspheric lenses are used to correct these image defects.  One solution to this is to have one or both surfaces, departing from the spherical shape. ...

Specifications

Diameter: 7.20 mm
Material: H-LAK54
Effective Focal Length: 9.64 mm
Numerical Aperture (NA): 0.30
Wavelength Range: 350-2000nm
Data Sheet
Traditionally lens surfaces have been sections of a sphere. For many applications this leaves spherical aberration as the dominant defect of any image so created.   Aspheric lenses are used to correct these image defects.  One solution to this is to have one or both surfaces, departing from the spherical shape. ...

Specifications

Diameter: 6.51 mm
Material: H-LAK54
Effective Focal Length: 7.50 mm
Numerical Aperture (NA): 0.30
Wavelength Range: 350-2000nm
Data Sheet
Traditionally lens surfaces have been sections of a sphere. For many applications this leaves spherical aberration as the dominant defect of any image so created.   Aspheric lenses are used to correct these image defects.  One solution to this is to have one or both surfaces, departing from the spherical shape. ...

Specifications

Diameter: 6.00 mm
Material: H-LAK54
Effective Focal Length: 4.60 mm
Numerical Aperture (NA): 0.53
Wavelength Range: 350-2000nm
Data Sheet
Traditionally lens surfaces have been sections of a sphere. For many applications this leaves spherical aberration as the dominant defect of any image so created.   Aspheric lenses are used to correct these image defects.  One solution to this is to have one or both surfaces, departing from the spherical shape. ...

Specifications

Diameter: 4.50 mm
Material: N-BK7
Effective Focal Length: 3.30 mm
Numerical Aperture (NA): 0.47
Wavelength Range: 350-1100nm
...
Data Sheet
Asphperical lenses have different radius of curvature from surface center to edge, so aspherical lenses can eliminate spherical aberrations as well as the error which other spherical lenses can not eliminate, promote spotlight accuracy rate. At the same time, an aspherical lens has a simple construction, an aspherical lens can ...

Specifications

Diameter: 400 mm
Material: FS
Effective Focal Length: 1000 mm
Numerical Aperture (NA): >90%
Wavelength Range: 100-1200nm
Data Sheet