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Location: Main > Optical Lenses > Spherical Plano Concave Lenses > POL-BK7-PCV-A-25.4-50
Name: D25.4mm BK7 Plano-Concave Lens f-50mm(400-750nm)
P/N: POL-BK7-PCV-A-25.4-50
Keywords:Dia25.4mm,BK7,PCV,EFL-50mm,AR@400-750nm
Unit Price: S$80.00/pc
Available: In stock
Request: Add to Request List
Introduction:
If the lens is plano-concave, a collimated beam of light passing through the lens is diverged (spread); the plano-concave lens is thus called a negative or diverging lens. The beam after passing through the lens appears to be emanating from a particular point on the axis in front of the lens; the distance from this point to the lens is also known as the focal length, although it is negative with respect to the focal length of a converging lens.

BK7 Optical Glass Lenses, Plano-Concave Design
Diameter 1-inch, AR coated at 400-750nm

Substrate Material:
BK7 optical glass
Wavelength Range:
350nm - 2.0um
Design Wavelength:
633nm (n=1.515082), plano-concave
Outer Diameter:
25.4,+0.0/-0.1mm
Surface Radius of Curvature -25.8mm (+/-1%)
Centre Thickness 1.9mm (+/-0.1mm)
Edge Thickness 5.1mm (+/-0.1mm)
Focal Length:
-50mm (+/-1%)
Scratch/Dig:
40/20
Centration:
<=3 arc min
Clear Aperture:
>90%
Coating:
AR/AR coated at 400-750nm,double surface, R<0.5% max