LUMINEQ displays at line of sight for Night Vision Technology

July 1, 2020

Like many mission-critical operations, law enforcement tactical operations often take place at night. Night Vision technologies have many uses in a variety of law enforcement operations including aviation applications. For example, it can be used to find people in the dark or for pilots operating an aircraft or helicopter. It’s also helpful for navigation and surveillance during the night when it is dark. Night Vision can also be used for hunting purposes and watching animals after dark. Adding a display to optical devices enables the user to make informed decisions based on the digital information displayed,

Night Vision technology is mainly used in goggles and headsets. These are usually worn on the heads of tactical officers and attached with a head harness or helmet mount.

Augmented reality (AR) in optical devices is achieved by overlaying digital information to the line of sight. The AR is enabled with a display overlay on the Night Vision goggles lens system showing mission-critical information, such as heading, speed, attitude, location and distance to the target. This digital information is crucial for making an informed decision.

An image intensifier Night Vision device is an optical device that takes available light and intensifies it. Incoming light strikes a photocathode plate inside the image intensifier tube, then the photons are magnified and transmitted through a vacuum tube where they strike a micro-channel plate that causes the image to illuminate a picture in the same pattern as the light striking the photocathode.

Image intensifier amplifies existing light. This makes images easier to see. Even on the darkest nights, tiny bits of light are present. Some of this light may be infrared light that humans can’t see. Night Vision goggles using image intensifier technology collect all the available light. Collecting all light in Night Vision application is crucial in order to get the best possible image of surroundings.

Night Vision devices are used in several applications, including:

  • Surveillance
  • Law Enforcement
  • Military
  • Coast Guard
  • Hunting
  • Sports

Competing technologies

Currently there is no other rugged display technology that is placed straight to the optical path of optical devices. Competing technologies like OLED and LCD displays are placed outside of the optical path, needing complex and delicate optics to project the image to the line of sight. Typically, these technologies and the beam splitters and prisms used introduce light scattering and glare within the optical path that weakens the displayed image, hence the critical information displayed.

competing_NVIS_tech-infographic-2020-750x500Visualization of competing display technology in Night Vision devices

The materials used in OLEDs and LCDs are affected by the environment, they're sensitive to moisture, sunlight, heat and cold. These are important features of a display in Night Vision devices, especially for mission critical operations, which can take place in extreme weather conditions. OLED and LCD displays also require additional space within the image intensifier tube, which is not always possible since the tube is already optimized to be a certain size.

OLEDs and LCDs are ideal for consumer devices like mobile phones, as consumers are likely to change these regularly. OLED displays are not the ideal fit for mission critical applications, where the lifetime of the display can be a critical driver.

LUMINEQ display Technology for Night Vision Devices

LUMINEQ innovated last year a Technology Demonstator for Optical devices, engineered to demonstrate and help manufacturers evaluate the unique capabilities of LUMINEQ transparent displays for Optical devices.

Compared to transparent OLED (TOLED) and other display technologies, the performance of our displays is on a different level with a glass-like transparency of 90%. One can always see through the lens system, even if you’re running low on battery or the display is not in use. Additionally the ruggedness and capability to go down to very low brightness makes LUMINEQ display technology a perfect fit for night-vision devices like goggles and optical/observation devices using image intensifier tubes.

The main benefit of the LUMINEQ technology for Night-Vision applications is that the display is actually placed in the line-of-sight. And more importantly the uniform display glass can be placed to the line of sight covering the whole optical path meaning that light pollution, glare or light scattering can be minimized, and hence achieve the best possible night vision image. This also enables the user to focus on their mission and get the critical information for an informed decisions.

Transparent display in the line of sightLUMINEQ technology for Night Vision devices

The color used in Night Vision devices is usually green. The LUMINEQ yellow is perfect color for these kind of applications, since yellow provides a good contrast with the green background. Another benefit with our technology is that it does not require a lot of space from the optical path, the intensifier tubes and goggles are already extremely small and compact and do not have extra space for additional optics.

LUMINEQ technology for Night Vision devices main benefits:

  • Display brightness can be set very low and adjusted to match light enhancement sensor
  • Optical uniformity achieved with one unified TASEL glass on the optical path
  • LUMINEQ yellow color contrast perfectly with green and white colors of the night-vision device
  • Uniquely high transparency, fully customizable and the most durable display on the market
  • Space saving compared to Prims type solutions
  • Digital information in the line of sight to make an informed decision

LUMINEQ displays are inorganic, solid state displays made for robust environments. They endure drastic temperatures, humidity, shock, and vibrations. The operating temperature is from -100°C to 105°C and the temperature doesn’t affect the lifetime or response time. The displays need neither heater nor cooler. 

All LUMINEQ displays are fully customizable, do not hesitate to contact us if you wish to get more information about our Optical products.

#Transparent displays #Optics #Mission-critical

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