Military & Defense Optics
Reynard Corporation is proud to be a leading supplier of military optics. With over 30 years of experience, superb engineering talent, manufacturing expertise, in-house fabrication capabilities, and state-of-the-art optical design software, we have been called upon time after time to meet critical needs in military applications for precision optical components. Military requirements have challenged us to produce unique thin film solutions, such as:
- The highest performing anti-reflection coatings in the visible through long-wave infrared (LWIR) spectral bands
- To design, manufacture, and test multi-band IR filter coatings
- Utilizing new substrate and coating materials to achieve spectral results never before anticipated
- Combine our knowledge of materials and variable coatings to produce unique variable spectral performance filters in various configurations including linear, circular, arc, etc
New Military infrared sensors are being developed to improve detection and IR jamming of a wide range of military vehicles, such as: fighter aircrafts, UAVs, helicopters, transport aircraft, army vehicles, tanks, artillery, navy ships, warships, submarines and missiles. New Infrared technology can now detect minute details at distances of over 100 meter (one football field). This technology allows helicopters and other aerial vehicles to fly in the darkest of night, while maintaining near-day visibility.
Laser limiters are designed to protect focal plane detectors. Reynard produces two types of laser limiters. The optical power limiter (OPL) protects by wide-band absorption. The OPL responds to input power levels and is not restricted by particular spectral bands. Once input power reaches the activation level, additional power is absorbed and not transmitted to the detector. Reflective limiters are all dielectric in design and protects by reflecting unwanted laser wavelengths back out of the focal plane detector area. Both techniques have advantages and disadvantages. Contact our sales department for a detailed discussion on the tradeoffs.
In the past target discrimination was accomplished by just the human eye. Today discrimination of military targets range from human eye aided devices to fully automatic detection recognition (ATR). These electro optical devices utilize active and passive sensors as well as polarization of light to discriminate manmade objects from the background. This effort is under continuous development to meet the changing conditions in the real world. The military research community is using model-based algorithms to further improve target detection.
Laser Bore Sight:
Lasers are continually becoming smaller, lighter, more durable and are available in many colors. They have been designed to mount on and around rifles and handguns. The laser has even been designed to go inside a bullet that is then inserted into the gun for perfect bore sighting.
EMI/RFE Protected Windows:
Shielded windows protect electronic equipment from EMI/RFE radiation. Protection is accomplished by utilizing fine blackened woven screen material or deposited conductive coatings laminated between polycarbonate or glass plates. Transmission can be up to 95%. The screen material is either blackened copper or stainless steel. The screen mesh will range from 50 to100 screen openings per inch to block from 200 to 1000 MHz. Reynard Corp can add antireflection coatings to improve transmission.
There are two types of remote sensing: passive and active. Passive relies on natural radiation emitted or reflected by an object. The source of radiation is typically from object emissivity. Active sensing relies on signals being sent out and reflected back to the sensor. Information is then analyzed by what signals did not come back (absorption) to signals that were sent. The spectral selectivity is achieved by using Reynard's fixed bandpass filters or our variable bandpass filters.
High Reflecting (HR) Mirrors:
High reflection mirrors are products by multilayer coatings (23 to 60 layers) to achieve greater than 99.5% to 99.95% reflection of over a specific bandwidth. More complex optical coatings can be produced that have high reflection over a specific spectral range while transmitting greater than 95% in a different spectral region. Reynard can provide these mirrors as a standard product or customize them to meet unique applications.
Radiation Hardened Mirrors:
Reynard Corp. has developed radiation hardened reflective coatings for the Missile Defense Agency (MDA). These coatings can be applied to lightweight substrate materials such as Silicon Carbide, Beryllium and Aluminum. X-ray damage testing at Double Eagle, Omega-3, and the National Ignition Facility (NIF) have shown that these coatings will be up to 5 times more durable than protected gold.
Image intensifiers convert low light scenes into enhanced brightness and contrast through amplification of light. Light is gathered through an objective lens and then enters a gallium arsenide photocathode tube for amplification. The traditional viewing color is green due to the single color fluorescence screen; however, progress is being made with new phosphors that will transform the image to black and white.
Infrared imaging utilizing photon detectors typically operate in the SWIR, MWIR, and LWIR spectral bands. Photons from light are gathered through an objective lens which focus the photons to a cooled detector. The materials used for these cameras include ZnS, ZnSe, Germanium, Silicon, AMTIR, and other specialty and exotic materials. Since every photon counts, high-performance anti-reflection coatings are needed on the lenses to increase overall transmission and detection. Once solely a tool for the military for target acquisition, survelillance, and night vision, lower pricing is allowing for systems to move into the commercial and industrial markets.
Laser Range Finding:
The laser rangefinder is a device that uses a narrow laser beam to determine the distance to an object. The common laser rangefinder operates by sending a laser pulse to an object and measuring the time it take to return to the sender (or time of flight). Commercial laser range finders can operate out to 1km which is perfect for sports like golf, hunting and archery. Military rangefinders can operate out to 25km.
Military Target Acquisition:
Military target acquisition refers to detection, identification, and location of a target in sufficient detail to permit the effective deployment of lethal and non-lethal weapons.
Military Tracking Applications:
The military forces have a wide range of equipment and personnel at their disposal. Tracking equipment and personnel can be a challenge. Currently the military is using a number of techniques to accomplish this task such as: barcoded labels for information about materials and their location. GPS systems are utilized for active missions that can track the location of friendly and enemy forces. This information is then transmitted back to commanders.
Surveillance is the act of monitoring the behavior of people in local or remote locations. Markets for this technology include: Marine Surveillance, Military, Law Enforcement, Facility Safety, Search & Rescue, and Facilities Security. Reynard Corporation supplies visible and infrared elements for these systems.