BK7 Bi-Concave Lenses
 

These lenses are similar to plano-concave lenses and are best used with absolute conjugate ratios 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 

 Part-No. Diameter    Focal Length  Price €
LBV0.5"B/-15 0.5" -15 mm 41 ,--
LBV0.5"B/-25 0.5" -25 mm 40 ,--
LBV0.5"B/-40 0.5" -40 mm 32 ,--
LBV0.5"B/-50 0.5" -50 mm 30 ,--
LBV0.5"B/-75 0.5" -75 mm 30 ,--
LBV0.5"B/-100 0.5" -100 mm 27 ,--
LBV0.5"B/-150 0.5" -150 mm 27 ,--
LBV0.5"B/-200 0.5" -200 mm 27 ,--
LBV0.5"B/-300 0.5" -300 mm 27 ,--
LBV1"B/-25 1" -25 mm 37 ,--
LBV1"B/-40 1" -40 mm 37 ,--
LBV1"B/-50 1" -50 mm 36 ,--
LBV1"B/-75 1" -75 mm 35 ,--
LBV1"B/-100 1" -100 mm 35 ,--
LBV1"B/-150 1" -150 mm 35 ,--
LBV1"B/-200 1" -200 mm 35 ,--
LBV1"B/-300 1" -300 mm 35 ,--
LBV1"B/-500 1" -500 mm 35 ,--
LBV1"B/-1000 1" -1000 mm 35 ,--
LBV2"B/-75 2" -75 mm 97 ,--
LBV2"B/-100 2" -100 mm 85 ,--
LBV2"B/-150 2" -150 mm 81 ,--
LBV2"B/-200 2" -200 mm 76 ,--
LBV2"B/-300 2" -300 mm 73 ,--
LBV2"B/-500 2" -500 mm 73 ,--
LBV2"B/-1000 2" -1000 mm 73 ,--
LBV2"B/-2000 2" -2000 mm 73 ,--
LBV2"B/-3000 2" -3000 mm 73 ,--