A SWIR lens, or short wave infrared lens, is optimized for light in the 0.9 – 1.7μm
wavelength range. At Shanghai Optics we manufacture high quality SWIR lenses for surveillance, quality control, inspection and anti-counterfeiting imaging. Since ambient star light and background nightglow are natural providers of SWIR light, short wave infrared imagery is especially suited to night vision applications.
Our lenses feature the latest advancements in SWIR technology, and operate with less than 2 percent distortion. They have been designed to match InGaAs FPA formats, and are used in applications including solar cell testing, outdoor night vision imaging (for security applications), fruit surface scratches detection, silicone imaging, biomedical imaging, etc.
If a lens optimized for visible light is used in the SWIR range you will encounter high optical aberrations and the resulting images will have lower resolution. You can, however, use our SWIR short wave infrared lenses with visible light without degradation. We produce custom SWIR lenses for imaging applications that requires good quality images in visible, near infrared, and shortwave infrared spectral range. These lenses are specifically designed for installation into camera systems where they can generate high contrast images in various weather conditions including fog, dust, dawn, or night.
Colors that seem identical in the visible range can be differentiated easily using SWIR imaging. To the naked eye—or to a visible light camera—an apple may appear to be entirely red and perfect. SWIR imagery will produce an image that shows, in high contrast, any flaws, bruises, or soft spots.
The ability to see invisible colors isn’t the only benefit of SWIR imaging. Materials that would otherwise obscure images (water, vapor, fog, and silicon, for instance) are transparent to SWIR. This leads to applications in quality control (SWIR imagery can see through some packaging to the item within) as well as to outdoor surveillance (pictures taken in fog are just as clear as pictures taken on a bright sunny day). SWIR lenses are ideal for machine vision when you need to see what you simply can’t see with the naked eye.
High transmission, high spatial resolution and very low distortion are a hallmark of our SWIR lenses. They operate with very low levels of scattered and stray light, and perform with full-spectrum aberration correction. A high-precision focus locking mechanism will enable you to produce high resolution, fully focused images. Our in-stock options include an ultra-broadband antireflection coating, and other coatings are available upon request.
12.5 mm, 17 mm and 25 mm lenses are available off the shelf. These C-mount fixed focal length lenses are optimized for outstanding spectral resolution and high performance; for instance, the TV distortion of our 12.5 mm lens is no more than 1.58 percent. The minimum focus distance for our 25 mm and 12.5 mm lens is 0.3 m.
Click through to find detailed spec sheets, and contact us for current prices and product availability.
But you are not limited to our in-stock options. We have been producing high quality optics for 55 years, and there is little we don’t know. We’d love to put this extensive experience to work for you. Don’t have a complete design? Need a high resolution SWIR lens? No problem! Our pre-engineered lenses allow our customers the option to choose from a variety of preliminary designs based on what suits their application best. Just tell us your application requirements (dimensions, wavelength range, etc.) and our team of expert engineers will optimize our preliminary designs to meet your exact needs. This will save you the hassle of fully designing a product from scratch and help reduce or eliminate design fees!