Micro Focus Optics

Micro Focus 13M
Micro Focus 13M
Micro Focus 13M
Micro Focus 13M


Micro focus optics used for focussing the collimated radiation exiting a fiber collimator.
  • Attachment optics for fiber collimators type 60FC-L or 60FC-T with outer diameter Ø 25 mm
  • Focal length f' = 25 mm
  • AR Coating 400 - 700 nm
  • Achromatic correction


The Micro Focus Optics type 13M-M25-01-S is used to generate a small laser spot from the collimated radiation of a fiber collimator.
The size of the spot and its Rayleigh range is determined by the fiber properties and by the focal lengths of the fiber collimator and of the micro focus optics. For single-mode fibers the Gaussian intensity distribution and beam shape are maintained.
It is designed for the fiber collimators series 60FC-L or 60FC-T with an outer diameter Ø 25 mm.

In order to change the working distance of the Micro Focus Optics the lens position of the adjacent collimator has to be readjusted.

Housing material:
As standard, the housing of the Micro Focus Optics is made of nickel silver.
For amagnetic fiber collimators Schäfter+Kirchhoff offers Micro Focus Optics with housings made of titanium.

Technical data


Order Code
Focal length
25 mm
Working distance A
20.9 ± 0.1 mm
AR coating
Wavelength range
400 - 700 nm
Lens type
Doublet optics
Numerical aperture
Clear aperture
Ø 12 mm
Outer diameter
Ø 25 mm
Length B
8 mm
System mount
Ø 19.5 mm
Front fitting
Housing material
Nickel silver / steel
30 g
RoHS compliant

Dimensions (for a complete dimensional drawing please refer to the downloads section)


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Hex key WS 1.5