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Location: Main > Optical Lenses > Spherical Plano Concave Lenses > POL-BK7-PCV-U-01270600-R50
Name: DIA12.7xT6mm BK7 Plano-Concave Substrate(R-50mm)
P/N: POL-BK7-PCV-U-01270600-R50
Keywords:Dia12.7xTe6.3mm,BK7,PCV,ROC-50mm,uncoated
Unit Price: S$55.00/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.

Material: BK7 optical glass
Applications: to be more used for substrates of laser cavity mirrors with dielectric coating(high reflection or partial reflection on concave surface, and anti-reflection on back/plano surface at lasing wavelength point or band, at 0-degree AOI
Wavelength Range: 350 - 2000nmm
Design Wavelength: 633nm (n=1.515082), plano-concave
Outer Diameter: 12.7,+0.0/-0.1mm
Edge Thickness: Te=6.0,-0/+0.3mm
Radius of Converture(ROC): -50mm(concave surface) (tolerance within 0.5%)
Focal Focal Length(EFL): EFL (transmission) per calculation only; Reflective focal length: R/2 = -25mm
Surface Quality: Both surface optically polished, per 20/10 scratch and dig
Surface Figure: <lambda/8 @ 633nm over clear aperture(both surfaces)
Centration: <3 arc minutes
Clear Aperture: >90%
Coating: Uncoated on both surfaces
Chamfer: 0.15-0.20mm x 45deg protection

 
 
 
 
 
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