Precision Molded Infrared Aspheric Lenses

Precision Molded Infrared Aspheric Lenses GH Optics

Precision Molded Infrared Aspheric Lenses GH Optics view 2

AMS item number: SW11896

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Focal Length 0.91-5.95 mm; Numerical Aperture 0.56-0.86; Design Wavelength 4-9,5 µm; Outer Lens... more

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Product information "Precision Molded Infrared Aspheric Lenses"

Focal Length 0.91-5.95 mm; Numerical Aperture 0.56-0.86; Design Wavelength 4-9,5 µm; Outer Lens Diameter 3.000-8.000 mm; Working Distance 0.66-5.00 mm

GH Optics’ series of infrared lenses are aspheric optics, precision molded in IR glass, designed for use in the short-wave, mid-wave, and long-wave infrared (SWIR, MWIR, LWIR) bands. Typical applications are collimating or focusing (laser) beams, but also coupling quantum cascade lasers (QCL).

With their large numerical apertures, these precision molded infrared aspheric lenses provide optimum collection of light for infrared lasers (short wave (SWIR), mid wave (MWIR) and long wave (LWIR) types), as well as quantum cascade lasers (QCL).

Two types of chalcogenide glass are available:

GH6, made from As₄₀Se₆₀ material, is most popular and widely used. This material is comparable to infrared glass of other leading brands in the market, features high transmission, is Ge free and RoHS compliant and can be molded, grinded and polished.
GH2, made from Ge₂₈Sb₁₂Se₆₀ material, is especially suitable for collimating lenses, gas testing and coupling of quantum cascade lasers (QCL). This material also is comparable to infrared glass of other leading brands in the market, featuring high transmission and RoHS compliance. Lenses made from this material can be molded, grinded and polished and are suitable for high-temperature applications.

Lens Series	Glass Type	Glass Material	Refractive Index @10 µm	Abbe Number @10 µm	CTE	dn/dT	RoHS Compliance
L2	GH2	Ge₂₈Sb₁₂Se₆₀	26.044	93.63	142×10^-7/°C	70.4×10^-6/°C	yes
L6	GH6	As₄₀Se₆₀	27.775	137.71	209×10^-7/°C	31.3×10^-6/°C	yes

Our series of molded infrared aspheric lenses can be coated with a range of AR (anti reflection) coatings, including two standard AR coatings (RA, RB) featuring average reflectance values of <1.0% or even <0.5% for wavelength ranges of 3 µm to 5 µm or 8 µm to 12 µm respectively. Other customized coatings like HD (High Density) or SWB (Short Wave Blocking) are available on request.

Lens Code	Outer Diameter (OD)	Effective Focal Length (EFL)	Numerical Aperture (NA)	Clear Aperture (CA)	Working Distance (WD)	Design Wavelength (DW)
L20990	3.000 mm	0.91 mm	0.86	2.50 mm	0.66 mm	4.2 µm
L21990	5.500 mm	1.87 mm	0.85	4.00 mm	0.72 mm	9.5 µm
L23070	6.500 mm	3.00 mm	0.71	5.00 mm	2.35 mm	8 µm
L24060	6.500 mm	4.00 mm	0.56	5.00 mm	3.05 mm	4.0 µm
L26060	8.000 mm	5.95 mm	0.56	7.60 mm	5.00 mm	4 µm

Key Features:

GH6 or GH2 Chalcogenide Glass
Diffraction Limited
Precision Molding
Effective Focal Length: 0.91 mm to 5.95 mm
Numerical Aperture: 0.56 to 0.86
Design Wavelength: 4 µm to 9,5 µm
Outer Lens Diameter: 3.000 mm to 8.000 mm
Working Distance: 0.66 mm to 5.00 mm

Applications: Collimating Lenses; Focusing; Gas Testing; Coupling of Quantum Cascade Lasers (QCL); High-Temperature Applications; And Many More

Product Group:

Precision Molded Infrared Aspheric Lenses

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Precision Molded Infrared Aspheric Lenses GH Optics Datasheet Glass Types Overview GH Optics Coating Curves Overview GH Optics Precision Molded Aspheric Lenses Glass Types GH Optics Datasheet

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Mounted Precision Molded Aspheric Lenses