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MWIR camera detectors use Indium Antimonide (InSb), Lead Selenide (PbSb), or Mercury Cadmium Telluride (HgCdTe) to sense thermal emissions.

Industrial objectives are primarily used in industrial microscopes that are powerful tools of inspecting materials, component structures, sub-assemblies, assemblies, and finished products for quality controls. Biological objectives are primarily used in biological microscopes that are scientific instruments for research and diagnostics of biological specimens in research institutes, universities, and hospitals. Metallurgical objectives are primarily used in metallurgical microscopes to examine objects with shiny, or metal, or other opaque surfaces for scientific research and industrial applications. Mechanical tube length is another critical factor, as it determines the distance between the objective lens and the eyepiece, affecting the overall magnification and image quality.

The significant difference with short-wave infrared cameras (SWIR cameras) is that they capture light reflected or absorbed by an object. In contrast, MWIR and LWIR cameras detect heat emitted by the object (or animal).

Shanghai Optics design and manufacture various standard microscope objectives and also custom microscope objectives for meeting customers’ specific needs. With various types of advanced in-house manufacturing and testing equipment, we can produce both prototypes and large quantities of precision microscope objectives in an economic and fast way.

Ophir ZoomLens

Emitted heat strikes the microbolometer, usually made of vanadium oxide (Vox) or amorphous silicon (a-Si). The surface heats up (electrons become excited), and the camera measures the change in surface resistance in each pixel of the surface to create an image.

Shanghai Optics’ super apochromatic microscope objectives are designed for the most demanding research applications. Super apochromatic microscope objectives offer exceptional apochromatic correction and deliver diffraction-limited performance in the visible region. These objectives are designed for use in different immersion media such as air/dry, water or oil.

For precision imaging and scientific research, high-quality objectives are needed to produce high-resolution images with low distortion and high contrast. The intermediate image is the image formed by the objective lens before it reaches the eyepiece or camera, and it should be clear and well-resolved for accurate analysis.  The refractive index of the medium between the objective and object is critical in determining the working numerical aperture and also the resolution of a microscope objective. Objective numerical aperture can be dramatically increased by designing the objective to be used with an immersion medium, such as oil and water.

Ophir SWIRlens

There are “cooled” versions of LWIR cameras used in research or medical applications that provide images with much greater detail. However, the cameras must get cooled to 77K or -321 degrees Fahrenheit, which requires specialized equipment and parts and can be prohibitively expensive. Most LWIR cameras are the “uncooled” type, which provides adequately detailed images for detecting the presence of people, animals, or vehicles.

Visible light exists along a very narrow portion of the electromagnetic spectrum. Energy gets measured in wavelengths extending from gamma rays with a wavelength of 10-15 micrometers all the way up to radio waves with wavelengths up to one millimeter. Visible light exists within the range of 0.4 to 0.7 micrometers.

SWIRlens

It turns out that Superman’s X-ray vision isn’t entirely a fantasy: some cameras can “see” what’s inside a plastic bottle or detect bruising on a piece of fruit that isn’t visible to the naked eye. These specially designed cameras use materials sensitive to radiation emitted or reflected in specific wavelengths within the infrared spectrum, but various types are available. Learn the differences between SWIR, MWIR, and LWIR cameras.

Ophirlens

Microscope Objective lenses is the most important part of a microscope and plays a central role in imaging an object onto the human eye or an image sensor for discerning the object’s detail. Microscope objectives are ideal for a range of science research, industrial, and general lab applications. Microscope objectives are typically composed of multiple lens elements and located closest to the object. Microscope objectives include infinite conjugate (infinite corrected) and finite conjugate, and these lenses are available in a range of magnifications from 2X to 200X.

Thermal cameralens

With more than 55 years of optical design and manufacturing experience in precision lenses, Shanghai Optics is highly qualified to help engineers, researchers, scientists and microscope manufacturers with microscopy and imaging challenges. Our optical engineering consultants can help design custom microscope objectives that meet your needs, and our production team can manufacture the lenses with high quality in very efficient and economic manners.

Shanghai Optics offers many types of pre-engineered objectives including plan achromatic objectives, plan fluorite objectives, plan apochromatic objectives, and super apochromatic objectives for a wide range of applications. In many cases, custom microscope objectives are the best option for special applications.

To address special custom needs such as  high N.A. or long working distance or special coatings, Shanghai Optics make cost-effective solutions available to customers.

MWIR cameras can operate in various climates, including those with high humidity, making them particularly well-suited to marine and coastal environments. Additionally, because they are typically smaller and lighter than LWIR cameras with similar optics, MWIR cameras are the obvious choice in applications with size, weight, and power (SWaP) requirements, such as airborne operations.

Though the specific steps vary depending on the type of the objective needed, microscope objectives are generally produced using the following process:

We provide first article inspection and follow ISO 9001 standards to ensure the lenses meet or beyond your expectations for performance. If you want to bring the advantages of high-quality microscope lenses to your project or workplace, request a free quote from S.O. today.

SWIR technology relies on Indium Allium Arsenide (InGaAs), Germanium (Ge), or Indium Gallium Germanium Phosphide (InGaAsP) to detect light reflected in wavelengths that silicon will not absorb.

Infrared lenses

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Wildlife researchers may use LWIRs to track or record wildlife populations and movements, while military and government organizations may use them for security and defense purposes.

Agriculture, electronics manufacturers, counterfeit currency detectors, and solar cell inspectors use SWIR cameras for quality control and to identify fraudulently printed paper money. They can also help art curators detect fakes or discover an artist’s original plan for a painting in drawings beneath the paint’s surface.

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Shanghai Optics’ apochromatic microscope objectives provide better corrections for both spherical and chromatic aberrations in a flat field of focus and have a high transmission from the visible to the near-infrared region.  These objectives are designed for use in different immersion media such as air/dry, water or oil.

Microscope objectives are widely used in all sorts of applications including medical, scientific research, and industrial fields.

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Home and building inspectors may also use LWIR cameras to locate areas with poor insulation or water damage. They can also detect damaged electronic parts that aren’t emitting the heat level they would if they were operating correctly.

While linear line scan InGaAs sensors are generally available, it may surprise you to learn that area scan InGaAs sensors are governed by International Treaty and Arms Regulations (“ITAR”), which the United States government administers. This means that imports and exports of these devices are strictly regulated, and although they may be available for commercial purposes, the use of some types of SWIR lenses may require licensure.

SWIR cameras can “see” defects in fruits and vegetables, capture images of the night sky, or create artistic nighttime cityscape images. The pictures these cameras produce look a lot like regular black-and-white photographs. These cameras can “see” through fog, clouds, and hazy air pollution to create clear images.

Objective lenses provide the base magnifications and can be divided into many types based on lens configurations, optical aberration corrections, and applications. Most important specifications are marked on the barrel of the objective, so either students or researchers can easily identify the properties of an objective and determine the working conditions for proper use.

Whether you use an SWIR, MWIR, or LWIR camera depends largely on why you need to use it. They all do some things better than others. If you’re inspecting agriculture products, paper money, or works of art, SWIR might be the best choice. MWIR cameras are essential safety equipment for manufacturers and industries that use hazardous gasses or for gas utilities to detect hidden gas leaks.

Although the “band gap” between wavelengths in the LWIR range of eight to 14 micrometers can be very small, which would ordinarily make an instrument seeking emissions in this range susceptible to “thermal noise,” the materials used to detect heat in these cameras thwart that noise. LWIR cameras use microbolometers to detect heat.

LWIR cameralens

Long-wave infrared cameras and technology get used in actual military operations. These cameras detect thermal emissions from people, animals, and vehicles when they emit heat at higher temperatures than the surrounding atmosphere.

At Axiom Optics, our mission is to supply scientists, researchers, medical and pharmaceutical professionals, and companies with high-quality optical equipment that best serves their needs. Browse our collections and contact us with any questions about which equipment will best suit your operation, research, or project.

Mid-wave infrared cameras excel at long-range surveillance applications. MWIR cameras have revolutionized airport perimeter security, vessel traffic monitoring, and critical infrastructure protection.

Sometimes budget and time restraint can hinder the chance to utilize complete custom optics in your project. Selecting a pre-engineered lens or modifying a pre-engineered lens to fit your specific requirements can be a good solution. Shanghai Optics (S.O) offers a wide selection of pre-engineered microscope objectives including industrial objectives, biological objectives, and metallurgical objectives at all different magnifications.

Shanghai Optics provides custom microscope objective lenses for researchers and OEMs who require a solution that is beyond the capability of off-the-shelf microscope objective lenses. Custom objectives are designed to meet the performance needs at specific imaging conditions such as thicker/thinner cover glass, large working distance, etc. Utilizing advanced optical design software and world-class manufacturing techniques, Shanghai Optics designs and manufactures microscope objectives to meet customers’ specific needs in efficient and economical ways. Major microscope manufacturers offer a wide range of objective designs to cater to various applications and requirements in different fields. Construction techniques and materials used to manufacture objectives have greatly improved, leading to better performance and durability. Top-quality glasses with high refractive index and low dispersion are used for reducing chromatic and other aberrations such as coma, astigmatism, geometrical distortion, field curvature, and spherical aberration. Individual internal single element lenses are precisely engineered and assembled to enhance the overall quality and performance of the objectives.

OphirMWIRlenses

There are many types of microscope objectives for covering a wide variety of applications. The most basic and least expensive objectives, like you might find in a school science classroom, are achromatic objectives. Apochromatic objectives, on the other hand, provide a professional-grade level for aberration correction and feature comparatively high resolution. Most microscopes are equipped with multiple objectives with different magnifications, so specimens or samples can be examined with sufficient resolution. For example, high numerical aperture (NA) is crucial for high-resolution imaging as it determines the amount of light entering the objective lens. The refractive index of the medium between the objective and object is critical in determining the working numerical aperture and also the resolution of a microscope objective. Objective numerical aperture can be dramatically increased by designing the objective to be used with an immersion medium, such as oil and water.

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Edmund Scientific Corporation, based in Barrington, New Jersey, was founded in 1942 as a retailer of surplus optical parts like lenses.

Cameras made especially to detect these wavelengths include SWIR, MWIR, or LWIR cameras. The differences between SWIR, MWIR, and LWIR cameras revolve around what they’re made of and how they get used.

These cameras are also less susceptible to atmospheric conditions. To be detected by passive infrared cameras, infrared radiation must travel through the atmosphere to the detector. The range of detection can be limited by absorption, scattering, and refraction due to water vapor or CO2 in the atmosphere. This affects long-wave infrared light more severely than mid-wave radiation.

Middle-wave infrared cameras detect thermal radiation (heat) emitted at three to five microns (millimeters). They don’t work well through dust, smoke, air pollution, or fog, but they help detect gas leaks that the naked eye can’t see.

Room 609, 6/F, Global Gateway Tower, No.63 Wing Hong Street, Cheung Sha Wan, Kowloon, Hong Kong +852-54993705 info@shanghai-optics.com

T-mount to C-mount lens adapter. This has the standard 1-inch x 32TPI C-mount threads on the inside, and M42x0.75 T-thread on the outside.

MWIR cameras may require integrated cooling capabilities to reduce “noise” created by ambient heat emitted by objects or people adjacent to machinery or objects getting measured.

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While standard InGaAs cameras are typically sensitive from 0.9 to 1.7 µm, there are now cameras on the market with extended range. For example, Sony recently developed their SenSWIR technology by making sensors with high sensitivity from 0.4 to 1.7 µm, thus covering both visible, near-infrared, and SWIR wavelengths. This has many applications, especially for hyperspectral imaging. There are even range extenders now available for SWIRs that can take these cameras up to 2.2 µm, enabling other applications involving lasers at those wavelengths.

Thus, because MWIR radiation travels more easily through the atmosphere, MWIR cameras provide the longest detection ranges, seeing about 2.5 times farther than long-wave infrared (LWIR) cameras. Consequently, MWIR cameras can detect humans, vehicles, and objects even if they are many miles away.

Drone-mounted MWIR cameras get sent to detect toxic gas leaks that aren’t visible or to check on machinery that uses hazardous gasses. Because they work better indoors where solar radiation doesn’t interfere with their thermal detection, MWIR cameras detect passenger body temperatures in airports and get used for other types of indoor surveillance. The hotter an object (person or animal) gets, the brighter it will appear to the MWIR camera.

LWIR cameras are less sensitive to thermal “noise” in the environment and thus are useful outdoors. They can “see” through foliage to detect heat emissions from enemy fighters, dangerous predators, or hidden vehicles. They can also detect roadway hazards in very dark conditions helping to avoid collisions with animals or vehicle damage by unexpected potholes or washed-out areas.

Infrared cameras detect light or heat at wavelengths ranging from 0.7 to 2.5 micrometers (short-wave infrared light), three to five micrometers (middle-wave infrared light), or long-wave infrared light (eight to 14 micrometers).

Photographers use light to make art, while scientists, from medical researchers to wildlife biologists, use it to make discoveries. Meanwhile, military and surveillance cameras use light and heat to detect and remediate threats.

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