Singapore Optics shop retail laser optics & fiber optical components covering the entire spectrum from UV to FIR.
 
 

       HomeProductsNewsLinksContact
  Products Fast Search
  
Optical Substrates
Optical Crystals Ceramics
Optical Windows Shadow Masks
Optical Lenses
Spherical Plano Convex Lenses
Spherical Plano Concave Lenses
Spherical Bi Convex Lenses
Spherical Bi Concave Lenses
Cylindrical Lens Meniscus Lens
Aspheric Lens Powell Lens Axicon Le
Achromatic Lenses
Ball Lens Half Ball Lens
Optical Mirrors
Optical Prisms
Optical Filters
Optical Beamsplitters
Optical Waveplates
Optical Polarizers
Optical Etalons
Quartz Glasswares Alumina Tube
Optomechanics
Fiber Passive Components
Fiber Optical Attenuators
Fiber Amplifiers
Fiber Frequency Shifter
Fiber Optics Tooling Packaging
Lasers Systems Accessories
Light Sources
Imaging Components
Photodetectors
Photomask Reticle
Optical Power Meters
Optical Modulators Drivers
Instrument Accessories
Optical Grating
Hotline:    +65-6316-6370
                  +65-6316-2142
Email:      sales@optics.sg
photonik@singnet.com.sg

Location of SG Optics Shop
Search on Google Maps

Location: Main > Optical Lenses > Spherical Plano Concave Lenses > POL-BK7-PCV-A-25.4-250
Name: D25.4mm BK7 Plano-Concave Lens f-250mm(400-750nm)
P/N: POL-BK7-PCV-A-25.4-250
Keywords:Dia25.4mm,BK7,PCV,EFL-250mm,DAR@400-750nm
Unit Price: S$75.00/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:  25.4mm (+0.0/-0.1mm)
 Surface Radius of Curvature  -128.8mm (+/-1%)
 Centre Thickness  2.2mm (+/-0.1mm)
 Edge Thickness  2.8mm (+/-0.1mm)
 Effective Focal Length(EFL):  -250mm (+/-1%)
 Scratch/Dig:  40/20
 Centration:  <3 arc minutes
 Surface Accuracy: <lambda/4 @ 633nm over clear aperture 
 Edge Thickness: Te=2.7,+/-0.1mm 
 Clear Aperture:  >90%
 Coating:  AR coated at 400-750nm(R<0.5% max),both surfaces (0-deg AOI designed)
 
 
 
 
 
SingaporeForum Copyright @ Singapore Optics Shop, 2006-2013 Back to Top