LC-4 Series Refocusing and Collimator Assemblies

Multimode Fiber Optics, Inc.

Our standard Fiber Optic Collimators employ plano-convex lenses positioned at their focal length from the optical fiber tip. The standard collimators use SMA female connectors for ease of coupling to standard 0.22 N.A. fiber optic cables. For light exiting from an optical fiber, collimators expand the beam and decrease the divergence by the ratio of the fiber core diameter to the collimator aperture. Ex. A 100 m core diameter fiber with an N.A. of 0.22 has an output divergence of 12.7. When coupled to an LC-4, its divergence is reduced to 0.100/4.00 x 12.7 0.3 at its center wavelength. Conversely, light entering the collimator will be focused into the fiber.

 

Our UV-Vis and Vis-NIR Refocusing Assemblies are offered for the LC-4, LC-10, and LC-22 series collimators. These single-element cells thread into the collimator, refocusing the beam at a given distance. Standard refocusing assembles are listed above. Other focal lengths and AR coated optics are available on a custom basis. OTHER AVAILABLE OPTIONS: FC, ST and SC connectors, .25" ferrules; Operation with other N.A.s such as 0.12, 0.26, 0.37, and 0.40; AR coated optics for > 98% transmission at peak wavelength.

 

LC-4 Series Collimator Assemblies

These are fixed assemblies with a 4.0 mm aperture within stainless steel housings of 6.35 mm (.25") O.D. x 23.25 mm length. Identify the actual operating wavelength when ordering and the assembly will be factory aligned for that range. Collimator Assemblies include female terminations which mate directly to fiber cables (SMA standard .25", FC, ST, OQ, others available).

Part Number
(click on part # to order)
Price
1.0 M
Range
     
LC-4N-THD* $103  
LC-4U-THD* $182  

*"-THD" designates an internal thread, which is required to mount an LF-4N refocusing assembly.  Use these collimators, if you plan to attach a refocusing assembly to the collimator.

 

Multimode Fiber Optics, Inc.

LF-4 Series Refocusing Assemblies

These are fixed assemblies with a 4.0 mm aperture within stainless steel housings-303 of .25" O.D. x .25" length (excluding threaded section).

Part Number
(click on part # to order)
Price
1.0 M
Focal
Length
Range
       
LF-4N5 $84 5 mm 380-2200 nm (Vis-NIR)
LF-4N10 $84 10 mm 380-2200 nm (Vis-NIR)
LF-4N15 $84 15 mm 380-2200 nm (Vis-NIR)
       
       
LF-4U10 $158 10 mm 170-2400 nm (UV-Vis)
LF-4U15 $158 15 mm 170-2400 nm (UV-Vis)
LF-4U20 $158 20 mm 170-2400 nm (UV-Vis)