Plano Concave Lenses

Plano Concave Lenses

Tower Optical’s plano concave lenses have a negative focal length, diverge collimated incident light, and form only virtual images which are seen through the lens. They are often used to expand light beams or increase focal lengths in existing systems. They are widely used in telescopes, collimators, optical transceivers, magnifiers, radiometers and condensers.

 

 

Specifications

Material : BK7, grade A, fine anneal, or K9 substitute
Design wavelength: 632.8 nm
Diameter tolerance: +0/-0.10 mm
Focal length tolerance: ±1%
Centering: ±3 arc minutes
Clear aperture: 90% of diameter
Surface quality: 60-40 Scratch-Dig
Bevel: 0.25 mm x 45°
Coating: none

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Pricing And Ordering Information

Part No. Number Dia.(mm) EFL (mm) R1 (mm) R2 (mm) CT (mm) ET (mm) BFL (mm) Price each
LNCV001 6 -18 -9.26 2 2.5 -19.32 18
LNCV002 6 -24 -12.35 2 2.37 -25.32 18
LNCV003 12.7 -25 -12.87 3 4.68 -26.98 19
LNCV004 12.7 -30 -15.44 3 4.37 -31.98 19
LNCV005 12.7 -50 -25.73 3.5 4.3 -52.31 19
LNCV006 25.4 -50 -25.7 3.5 6.9 -52.3 22
LNCV007 25.4 -75 -38.6 3.5 5.56 -77.31 22
LNCV008 25.4 -100 -51.46 4 5.59 -102.64 22
LNCV009 50.8 -75 -38.6 3.5 13.04 -77.31 29
LNCV010 50.8 -100 -51.46 4 10.71 -102.64 29
LNCV011 50.8 -150 -77.19 4 8.3 -31.97 29

Please check with Tower for availability. Call us for quantity pricing.

We make custom versions of everything on this site. Send us your drawings or specifications and we will provide a quotation.