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30 May 2025
Unlock Remote Gas Analysis with art photonics

Unlock remote gas analysis with art photonics' innovative Transflection Fiber Probe. Are you facing challenges with real-time gas measurements in process control or PAT? Our Transflection Fiber Probe is engineered for remote spectroscopy and seamless in-line process control. What is Transflection?This technique effectively doubles the light's journey through your gas sample, which significantly increases detection […]

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Happy International Day of Light! Today, art photonics is proud to shine a light on the incredible versatility of illumination and the advanced technologies that harness its power. We continue to drive progress across various fields with our comprehensive range of specialty optical fibers. Our innovative solutions span an exceptionally wide spectral range - from […]

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art photonics GmbH, a valued member of the Nynomic AG group, is pleased to announce its participation in the upcoming LASER World of PHOTONICS. We cordially invite you and your colleagues to visit our booth at this premier industry event. LASER World of PHOTONICS presents a significant opportunity to explore our latest innovations in fiber […]

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Optical Fibers, Cables & Bundles for Lasers and Spectroscopy Applications in UV to Mid-IR Wavelength Ranges Finding the right optical fiber for your specific UV to Mid-IR application can be a significant challenge. Whether your requirements include flexibility, protection for harsh environments, or reliable IR transmission for CO/CO2 lasers, art photonics offers solutions to meet […]

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art photonics GmbH, founded in Berlin in September 1998, is one of the worldwide leaders in development and production of specialty fiber products for a broad spectrum from 300 nm to 16 µm. Unique technologies of Polycrystalline Mid InfraRed (PIR-) fibers and Metal coated Silica fibers are used for assembly of various spectroscopy probes for medical diagnostics and industrial process control, in volume production of fiber for medical and industrial lasers, for different fiber bundles, etc. Since January 2024 art photonics GmbH is a member of NYNOMIC GROUP.
Member Of:
UV 200-400 nm
Visible
Near IR 750-2500 nm
Mid IR 2.5 - 18 µm

Collimating & Refocusing Objectives for mid Infra-Red Fiber Cables

Categories: , Tag:

Main features:

  • Compatible with SMA- or FC-terminated fiber cables
  • Pupil diameter 15mm or 5 mm
  • Thread build-in in your optical system
  • Non-Magnetic Aluminium Housing
  • Refocusing or Collimating design
  • M24 thread adaptors to SM1, RMS and S-Mount are available on request

Description

MID-IR Focusing and Collimating Objectives are designed to use with Infra-Red fiber optic cables and bundles.
The housing of the lens easily connects to fiber optic cables either with FC/PC or with SMA connectors and enables Z-axis alignment.

Thread adaptors are suitable to mount lens objectives  to Thorlabs optical components with SM1, RMS and S-Mount.

Mid-IR Lenses are available with anti-reflection (AR) coating for two spectral ranges:

  • 3-5µm – for chalcogenide fiber cables
  • 8-12μm – for silver halide fiber cables

Specs

Table of Refocusing Objectives

Code FORO-L-3/5-F10 FORO-L-8/12-F10 FORO-S-3/5-F5 FORO-S-8/12-F5
ZnSe Lens Double-convex Ø 15 Double-convex Ø15 Plano-convex Ø 5 Plano-convex Ø 5
AR Spectral Range 3-5µm 8-12µm 3-5µm 8-12µm
Lens Focal Distance 10 mm 10 mm 5 mm 5 mm
Numerical Aperture 0,35 0,35 0,25 0,25
Outer Diameter 25 mm 25 mm 12 mm 12 mm
Connecting Thread M24x1 M24x1 no no
Length (approx.) 37 mm 37 mm 23 mm 23 mm
Alignment Options Z-axis positioning Z-axis positioning Z-axis positioning Z-axis positioning
SMA Adapter YES YES YES YES
FC/PC Adapter On Request On Request On Request On Request
Housing Aluminium Black anodizing Aluminium Black anodizing Aluminium Magenta anodizing Aluminium Magenta anodizing

Table of Collimating Objectives

Code FOCO-L-3/5-F20 FOCO-L-8/12-F20 FOCO-S-3/5-F5 FOCO-S-8/12-F5
ZnSe Lens Plano-convex Ø 15 Plano-convex Ø15 Plano-convex Ø 5 Plano-convex Ø 5
AR Spectral Range 3-5µm 8-12µm 3-5µm 8-12µm
Lens Focal Distance 20 mm 20 mm 5 mm 5 mm
Numerical Aperture 0,35 0,35 0,4 0,4
Outer Diameter 25 mm 25 mm 14 mm 14 mm
Connecting Thread M24x1 M24x1 no no
Length (approx.) 37 mm 37 mm 23 mm 23 mm
Alignment Options Z-axis positioning Z-axis positioning Z-axis positioning Z-axis positioning
SMA Adapter YES YES YES YES
FC/PC Adapter On Request On Request On Request On Request
Housing Aluminium Black anodizing Aluminium Black anodizing Aluminium Magenta anodizing Aluminium Magenta anodizing

Downloads

Graphs

Transmission Spectra

MID-IR Refocusing Objectives (FORO)

Collimating Objectives for Mid IR-Fiber Cables (FOCO)

Applications

  • Focusing the beam out of the fiber or, used in reverse, into the fiber
  • Collimating the beam out of the fiber or, used in reverse, focusing of collimated beam into the fiber
  • Fiber end/bundle imaging to the detector

Using a lens to collect the radiation into the optical fiber

The area S is limited by the numerical aperture of the optical fiber. The fiber "sees" the radiation exiting from each point within the area S.

The radiation reaching the fiber end is proportional to the angle d1/L, where d1 is the fiber diameter, L is the distance between S and fiber end.

To increase the radiation collected into the fiber, it is necessary to put a lens between S and fiber end, then the signal is proportional to d2/L, where d2 is the lens diameter (d2 > > d1).

Focus distance F and the lens diameter d2 should agree with the numerical aperture of the fiber.

Inquiry

Do you have any questions about this or any other product? Send us an inquiry, and our personnel will answer your question as soon as possible.

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