Infrared Optics Catalogue

Shortwave Infrared (SWIR) wavelength band offers unique imaging advantages over visible and other thermal bands. It is quietly earning a growing place in industrial machine vision for electronic board inspection, material/food sorting, solar cells inspection, quality inspection and in military applications. SWIR lenses are utilized where other detectors or cameras are not sensitive enough for the finite detail recognition

Midwave Infrared (MWIR) achromatic lenses can be used by designers and researchers working in the 3µm to 5µm spectral region. Providing near-diffraction-limited performance, these lenses are suitable for applications in FTIR (Fourier transform infrared) spectroscopy and MWIR thermal imaging, as well as for use with tunable quantum cascade lasers.

Longwave Infrared (LWIR) lens is typically uncooled and therefore, has less sensitivity. It allows the user to see through dust or smoke, which makes them particularly valuable in certain environments and applications. The field of view of a lens depends mainly on the focal length and the detector size.

The need to maintain focus over a wide range of environmental temperature is essential to the system performance, stability and high quality. Athermalized lenses kept it’s performance from changing by means of optical passivity, mechanical activity and mechanical passivity in a large temperature range. It’s configuration will auto-adjust itself when placed at different temperature.

The Infrared Zoom Lens is used to cater to the need for continuous zooming rather than two distinct magnifications.

The component in a lens system initially responsible for collecting light from the source or object and forming an image of it.

Mid-Infrared Borescope Lens is an imaging instrument with customizable requirements for clear inspection of hard-to-access areas, such as boiler tubes, furnace walls, etc. The special environment must be considered in optical and mechanical design, especially the effect of high temperature on the lens. In some cases, customers also require light paths at certain angles in order to view the side wall.

This is known as a Fisheye Lens because the front side of the lens seems like a bulging fisheye. Unlike ordinary lenses, the Fisheye Lenses have short focal lengths and a wide-angle field of view, allowing uniform screen brightness. It is used in various fields like Security Surveillance, Consumer Electronics, Automobiles and Testing Technology because it has steady focus.

Sniperscope Lens lay a targeting reticule over the amplified image at night times. It is also called night vision scope or thermal scope because it uses infrared light or amplifies dim light to detect the target at a distance. It is widely used in devices like binoculars, laser rangefinder, compass, GPS, telescopes and other navigation devices.

Plano-Convex and Plano-Concave lenses are positive and negative focal length lenses respectively and are used to focus a collimated light or to collimate the light. Infrared Lens is made by using specific materials like CaF₂, Ge, Si, ZnSe, ZnS, Chalcogenides, etc. These focusing lenses are used in industrial, life science and defence applications. 

Wavelength Opto-Electronic offers a wide variety of Plano-Convex and Plano-Concave Infrared focusing lens. Customized designs with different substrates, coatings, sizes and thicknesses are available upon request.

Material: CaF₂, Ge, Si, ZnSe, ZnS
Dimension Tolerance: +0/-0.01mm
Thickness Tolerance: ±0.1mm
Surface Quality: 60/40
Clear Aperture: >90%
Centration: <3 arc min
Focal Length Tolerance: ±2%
Coating: Options Available

Infrared Aspheric Lens eliminates spherical aberration, bring down system size or weight, and simplify assembly processing than conventional Spherical lenses. These lenses are widely used in Imaging, Security, and Industrial applications.

Wavelength Opto-Electronic manufactures Aspheric lenses of various materials like Si, Ge, ZnS, ZnSe, Chalcogenides (IRG22, IRG24, etc.) to function in IR region (1.2-12µm).

Material: Si, Ge, ZnS, ZnSe, Chalcogenides
Dimension Tolerance: +0/-0.13mm
Thickness Tolerance: ±0.2mm
Surface Quality: 60/40
Clear Aperture: >90%
Edge Thickness Variation: ≤3 arc min
Aspheric Accuracy: ≤1µm P-V
Focal Length Tolerance: ±2%
Coating: Options Available

Infrared Window is applied to isolate different physical environments while allowing light to pass through. When selecting windows, please consider the material, transmission, scattering, wavefront distortion, parallelism, and resistance to certain environment. We offer all kinds of windows which are made from different materials.

Diameter Tolerance: +0.0, -0.2 mm
Thickness Tolerance: ±0.2mm
Clear Aperture: >80%
Parallelism: <3 arc min
Surface Quality: 40-20 scratch and dig
Flatness: λ /2 @632.8nm per 25mmDia

Bandpass Filter

Infrared Bandpass Filters come in two types, Narrow (up to 250nm bandwidth) and Wide Bandpass (more than 500nm bandwidth). On request, Wavelength Opto-Electronic offers bandpass filters of varying bandwidths, IR wavelengths, coatings, shapes, and sizes to meet the specific needs of the customer. These filters are used in Digital Imaging, Infrared Gas Analysis, Security Systems, High-temperature detection, and in several fields.

Diameter Tolerance: +0/-0.2mm
Clear Aperture: >80%
Thickness: <10mm
CWL Tolerance: ±2nm
FWHM: 10±2nm
Peak Transmission: >45%
Block: <0.1%@200nm-12µm
CWL Shift: <0.02nm/℃

Longpass Filter

Infrared Longpass Filters transmit light higher than the cut-on wavelengths and attenuate the shorter wavelengths. Wavelength Opto-Electronic provides long pass filters of versatile coatings, cut-on wavelengths, sizes, and shapes in the infrared region. Customize infrared Longpass filters are also available. These filters are popularly used in Spectroscopy, Thermography, and Metrology & Device Engineering.

Diameter Tolerance: +0/-0.2mm
Clear Aperture: >80%
Thickness: <10mm
Cut-on Tolerance: ±2nm
Cut-off Tolerance: ±2nm
Peak Transmission: >70-80%
Block: <0.1%
CWL Shift: <0.02nm/℃