ElectroniCast LED Lighting Daily Gaggle: ElectroniCast: LED Used in Night Vision Imaging Systems (NVIS)

NVIS Compatible Lighting for Non-Civilian Applications E-mail me for more information about the ElectroniCast forecast of global market consumption of packaged light emitting diodes (LEDs), also known as component-level bulbs, used in Night Vision Imaging System (NVIS) compatible lighting for non-civilian use, such as military, law enforcement, emergency medical services and related applications.

A night vision device (NVD) comprises of an Infrared (IR) image intensifier tube in a rigid casing, commonly used by military forces and other non-civilian sectors; however, night vision technology has become more widely available for civilian use, for example, EVS, or enhanced vision systems are finding their way into private aircraft and vehicles. Infrared light is electromagnetic radiation with a wavelength between 0.7 and 300 micrometers, which equates to a frequency range between approximately 1 and 430 terahertz (THz).

Night vision goggles (NVG) combined with magnification lenses constitutes night vision binoculars. Other types include monocular night vision devices with only one eyepiece, which may be mounted to firearms as night sights. NVG and EVS technologies are becoming standard operating products on helicopter operations to improve safety. Light emitting diodes used in Night Vision Imaging Systems must provide an environment that will not have near infrared (NIR) noise, which would interfere with the nighttime sensitivity of the NVGs. It is important to note that night vision compatibility (NVC) is only achieved when the design of the lighting equipment allows for proper use with and without the NVIS, at night or during the day.

In this study report, we provide a detailed market forecast for LEDs that have night vision compatibility in relationship to night vision imaging systems (NVIS)

NVIS are passive systems, which have a very high sensitivity to radiation in the approximate region of 600nm to 930nm (orange to near infrared). The NVIS work by converting photons from the outside night scene onto a micro-displayed visible image. The NVIS will amplify the nighttime scene approximately 2000 times. To protect the image intensifier assembly, the systems are equipped with an automatic gain control (AGC), which will aperture down the NVIS when exposed to bright lights in the region of approximately 600nm to 930nm. If displays or light sources are not NVIS compatible, the automatic gain control will activate and the NVIS will become proportionally less sensitive to nighttime objects outside of the cockpit.

Solid State The market demands for light emitting diodes (LED) in night vision compatibility (NVC) devices are driven by the following: technological advances, size, weight, and durability in harsh environment (such as military/warfare), lower maintenance and ecological/energy-saving concerns. The term "solid state" refers to the fact that light in an LED is emitted from a solid object, that do not contain moving parts or parts that can break, rupture, shatter, leak or contaminate the environment —a block of semiconductor—rather than from a vacuum or gas tube, as is the case in traditional incandescent light bulbs and fluorescent lamps.

MIL-STD-3009 Interface Standard The Department of Defense (United States) published the MIL-STD-3009 Standard for lighting, aircraft, night vision imaging system compatibility, which specifies the interface and performance requirements for aircraft lighting and display equipment that is intended to be used along with NVIS. This specification defines aircraft interior lighting standards for sources such as cockpit displays and caution / warning lights, for both day and nighttime operating conditions. NVIS filters designed for avionic applications must incorporate NIR attenuation properties, chromaticity, contrast for daylight readability and often EMI/RFI shielding. The MIL-STD-3009 superseded MIL-L-85762A on February 2, 2001. This standard also includes provisions for white light sources and for “leaky green” requirements.

The Use of Filters: NVIS Radiance Properties (NR) The light emitting diodes in a display heavily influence its color, contrast, and NVIS radiance (NR) properties. White, green, and red light emitting diodes with certain spectral emission can be adjusted with filters to produce displays that comply with various NVIS color coordinates and NVIS Radiance (NR) specifications described in MIL-STD-3009. Meeting both color and Night Vision Imaging System (NVIS) Radiance limits can be challenging. Each application is unique and always involves certain constraints, such as space limitations or production methods, that may require a specific approach in order meet compliance.

Filters are ideal for many commercial and military applications, including crew-station displays for aircraft and ground vehicles, as well as portable display systems in personal digital assistants (PDA), palmtops, laptops, etc. Plastic Night Vision Imaging System (NVIS) filters are the ideal method for making virtually any light source compatible with NVIS, NVG, NVD, or any other night-vision apparatus. Plastic filters are extremely durable. Where all-glass filters might fracture, lightweight plastic material survives the most demanding real-world environments.

No Filters Needed: Backlighting Display Using LEDs United States Patent 7525611 (published in 2009; Assignee: Astronautics Corporation of America) provides for a system and method of backlighting a display using LEDs is night vision viewing compatible and requires no filters. The backlight includes an array of LEDs and a controller configured to selectively illuminate the LEDs in the array. The array of LEDs includes orange LEDs that are illuminated during a night vision-viewing mode and may include red LEDs that are illuminated in a non-night vision-viewing mode.

Quantitative Analysis LEDs face the challenge of creating definitive positions in the NVIS illumination market, as competing lighting solutions (technologies) are readily available and accepted. While this does not limit the potential success of LEDs, it does create some challenges. This report provides an independent examination and analysis of the changing market dynamics for LEDs used in selected end-use applications. The LED market forecast data are segmented by the following functions:

· Consumption Value (US$, million)

· Quantity (number/units)

· Average Selling Prices (ASP $, each)

The consumption value is determined by multiplying the number of units by the average selling price. The average selling prices are based on the price of the component-level LED bulbs at the initial factory level. The consumption values are based on the end-user application and the end-user region.

Regional Segmentation The market data are segmented into the following geographic regions, plus a Global summary:

America

United States of America
The Rest of the American Region (ROA)

EMEA (Europe, Middle Eastern countries, plus Africa)

· APAC (Asia Pacific)

LED Level Quantified in the ElectroniCast Study A Light Emitting Diode (LED) is a solid-state semiconductor device that converts electrical energy directly into light. On its most basic level, the semiconductor is comprised of two regions. The p-region contains positive electrical charges while the n-region contains negative electrical charges. When voltage is applied and current begins to flow, the electrons move across the n region into the p region. The process of an electron moving through the p-n junction releases energy. The dispersion of this energy produces photons with visible wavelengths. Below, are four levels (or “food chain”) of LEDs. For the purposes of THIS ElectroniCast study, we quantify and provide a market forecast for “Level 2”

Level 1 - The chip or die

Level 2 - The LED component (component-level bulb)

Level 3 - LED array; may include optics, heat sink and/or power supply

Level 4 - LED luminaire

Market Forecast and Analysis by Application The Night Vision Imaging System LED market is segmented into the following application categories:

· Military

o Aircraft

§ Cockpit / Display Panel / Instrument Lighting