JKN Electronics, Inc. sells the complete line of Computar, Kowa, Fujinon, Cosmicar-Pentax, Senko ADL, Schneider Optics and Tamron C-Mount and CS-Mount CCTV camera lenses at discounts of 25% and higher off manufacturers' suggested list prices. We also offer a variety of accessories for these lenses. Click on a lens manufacturer's logo below to view their list of products, technical specifications and for online ordering.

Has a wide variety of fixed focal, vari-focal, zoom, pinhole and motorized lenses ideal for security and surveillance applications. Computar also has a line of high quality MegaPixel lenses ideal for scientific and machine vision applications.

Has a wide range of superior quality lenses for CCTV and machine vision applications. Products include fixed focal length, vari-focal, zoom lenses (manual and motorized), lenses for 3 CCD color cameras, MegaPixel and new 5 MegaPixel machine vision lenses. Fujinon also has a new line of ultra high resolution wide angle fisheye 5 MegaPixel lenses.

Has a large variety of fixed focal length and zoom lenses (manual and motorized) which are ideal for security and surveillance applications. Kowa also has a family of high quality MegaPixel lenses ideal for scientific and machine vision applications. New offerings include a full line of 1/2" format MegaPixel lenses for 3-CCD cameras as well as several new 1" format ultra high resolution 2 MegaPixel lenses.

Full line manufacturer of fixed focal length lenses ideal for machine vision, medical and industrial automation applications. Pentax also has a line of motorized zoom lenses ideal for surveillance applications. Pentax lenses were formerly sold under the "Cosmicar" brand.

Senko ADL is a manufacturer of high quality yet economical CCTV lenses for machine vision and security. Senko product highlights include Megapixel fixed focal (including new 1" format F0.95) and high performance IR (day/night) vari-focal lenses.

Schneider Optics manufactures superior quality, high resolution C-mount lenses with robust mechanical construction for critical machine vision applications. Most Schneider Optics lenses are designed with color correction and broad band coating to work well over the entire light range from 400-1000 nm (visible to near IR spectrum). Products include 2/3", 1" and 1.3" format fixed focal length lenses, manual and motorized iris lenses, 1/3" format 3 CCD color camera lenses, and telecentric lenses.

Tamron offers a wide range of 1/3", 1/2", 1/1.8", and 2/3" format mono-focal, vari-focal and zoom CS and C-Mount lenses for CCTV and machine vision applications. Specialty products include high resolution mono-focal lenses for machine vision, a super high resolution 3-MegaPixel lens for machine vision, a new IR series of fixed and vari-focal lenses and several new MegaPixel vari-focal lenses. Photographic type lenses in Nikon F-Mount and Pentax K-Mount are also available. They can be used with C-Mount adapters on large imager format MegaPixel digital cameras.

Calculating Lens Focal Length

1) F = vm x (D/V)   or   2) F = h x (D/H)

F: Focal length of lens
V : Vertical field of view
H : Horizontal field of view
D : Distance from Lens to Object
vm: Vertical multiplier (see table below)
hm : Horizontal multiplier (see table below)

For Example:

To calculate focal length using:

1/2 inch CCD camera	vm = 4.8
Vertical field of view	V = 340 mm
Distance from lens to object	D = 2500 mm

Substitute these data to formula  #1 above:

F = 4.8 x (2500/340) = approx. 35 mm 

Therefore, specify a 35 mm lens to achieve a 340 mm vertical field of view from 2500 mm object distance with a 1/2" format CCD camera.

Note: field of view (V or H) and object distance (D) can be in any units of measure, provided they are both the same.

Prices and specifications subject to change without notice. All other trademarks are held by their respective owners.