CCTV Lenses for Machine Vision, FA Industrial, and Video
Security
|
 RMA
Electronics, Inc. sells Cosmicar/Pentax, Fujinon, Kowa, Pelco,
Computar (CBC America, Inc.), Schneider Optics,
Tamron, Senko ADL, and TOYO Optics CCTV lenses at discounts of 25% and higher off
manufacturers' suggested list price. We also offer a variety of accessories for these
lenses.
Click on a particular lens manufacturer to
view their list of products, technical specifications, and
online ordering.
|
|
|
Computar (CBC America, Inc.) offers a wide variety of fixed focal and vari-focal, as well as
manual/motorized zoom lenses. Ideal for
security/surveillance applications. Also offers line of
high quality mega pixel lenses.
|
|
|
|
Fujinon offers a line of high end machine vision lenses, as well as
"broadcast quality" motorized zooms and economical
vari-focals.
|
|
|
|
Kowa Optimed offers wide variety of fixed focal, vari-focal, and motorized
zoom lenses ideal for security/surveillance. Also offers
line of high quality mega pixel and machine vision lenses.
|
|
|
|
Pelco ffers very popular vari-focal lenses ideal for video security,
as well as fixed focal and motorized zooms. Ask about
Pelco's Integrated Optics Packages.
|
|
|
|
Pentax offers full line of fixed focal lenses ideal for machine vision,
medical, and industrial automation with specialty 1"
format. Also offers high end
motorized zooms ideal for surveillance. Formerly sold
under "Cosmicar" brand.
|
|
|
|
Schneider Optics offers very high quality lenses ideal for machine vision and
high end research applications. Manufactures popular series
of visible thru near IR corrected (400-1000nm) lenses.
|
|
|
|
Senko, a Japanese manufacturer of high-quality, low-cost vari-focal
lenses for security. Senko also offers full line of economically priced
mega pixel, machine vision/FA
industrial lenses, as well as motorized zoom lenses.
|
|
|
|
Tamron offers full line of vari-focals ideal for video security, as
well as high quality machine vision line of fixed focal lenses.
|
|
|
Zoom Lens Controllers
|
|
|
|
|
Image Labs hardware and software offers to ability to control
multiple motorized zoom lenses (as well as pan/tilt) on a PC via
RS-232 control.
|
|
|
|
Offers both stand-alone and keyboard type zoom lens controls for
controlling PTZ (pan/tilt/zoom) systems using multiple
protocols.
|
Click on the manufacturer above to view the product line or
call +1 781 749-9700 today to speak with a salesperson who will
find the best lens for your application.
General CCTV Lens Information & Education:
Calculating Lens Focal Length
1) f = v 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
v : vertical multiplier (see table below)
h : horizontal multiplier (see table below)
Table 1
| Camera Format |
1 inch |
2/3 inch |
1/2 inch |
1/3 inch |
1/4 inch |
| v |
9.6 |
6.6 |
4.8 |
3.6 |
2.7 |
| h |
12.8 |
8.8 |
6.4 |
4.8 |
3.6 |
For Example:
To calculate focal length using:
| 1/2 inch camera |
v = 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 35mm lens to achieve a 340mm vertical
f.o.v. from 2500mm object distance with 1/2" format camera. Note:
f.o.v. (V or H) and object distance (D) can be in any units of
measure, provided they are both the same.
|
