BK7 Bi-Convex Lenses

 

These symmetrical lenses also possess positive focal lengths and produce real images of distinct objects. However theses lenses minimize the spherical aberrations for nearly symmetrical positions of the conjugate points with respect to the lens. For exactly symmetrical imaging with a 1:1 magnification not only the spherical aberration is minimized, but also coma and distortion are completely eliminated. As a rule of thumb the bi-convex lenses are best used for magnifications between 1/5 and 5.

 

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Material:    BK7
Focal Length:    +/- 2 %
Design Wavelength:    546,1 nm
Diameter Tolerance:    +0/- 0.2 mm
Centering:    < 5 min. of arc
Wavefront Distortion:    λ/10
Clear Aperture:    90 % of diameter
Surface Quality:    S/D 10-5
Antireflection Coating:    on request
Lens mounted in cell:    on request

 

Other dimensions and focal lengths on request: list of radii  

Prices on request

Part-No. Diameter    Focal Length
LBX0.5"B/25 0.5" 25 mm
LBX0.5"B/40 0.5" 40 mm
LBX0.5"B/50 0.5" 50 mm
LBX0.5"B/60 0.5" 60 mm
LBX0.5"B/75 0.5" 75 mm
LBX0.5"B/100 0.5" 100 mm
LBX0.5"B/125 0.5" 125 mm
LBX0.5"B/150 0.5" 150 mm
LBX0.5"B/200 0.5" 200 mm
LBX0.5"B/250 0.5" 250 mm
LBX0.5"B/300 0.5" 300 mm
LBX0.5"B/400 0.5" 400 mm
LBX0.5"B/500 0.5" 500 mm
LBX1"B/25 1" 25 mm
LBX1"B/40 1" 40 mm
LBX1"B/50 1" 50 mm
LBX1"B/60 1" 60 mm
LBX1"B/75 1" 75 mm
LBX1"B/100 1" 100 mm
LBX1"B/150 1" 150 mm
LBX1"B/200 1" 200 mm
LBX1"B/250 1" 250 mm
LBX1"B/300 1" 300 mm
LBX1"B/500 1" 500 mm
LBX1"B/700 1" 700 mm
LBX1"B/1000 1" 1000 mm
LBX2"B/75 2" 75 mm
LBX2"B/100 2" 100 mm
LBX2"B/150 2" 150 mm
LBX2"B/200 2" 200 mm
LBX2"B/300 2" 300 mm
LBX2"B/400 2" 400 mm
LBX2"B/500 2" 500 mm
LBX2"B/750 2" 750 mm
LBX2"B/1000 2" 1000 mm