High Power Infrared Diode

High Efficiency IR LEDs?

A lot of work has gone into making the blue power LED more efficient so white-light diodes can be more efficient. With white-light LEDs producing more than 200 lm/w (Cree) at power levels of 1W the basic efficiency of the blue LED is over 50%... My question is: does anyone know of an InfraRed LED manufacture that markets a ~1w IR LED that has greater than 10% efficiency?

Veeco, in Plainview, NY maybe? This is the only firm in the field that I even know of, since they are located so close to my home. Just taking a wild guess.

High Power Diode Lasers: Technology and Applications $511.65 This book summarizes a five year research project, as well as subsequent results regarding high power diode laser systems and their application in materials processing. The text explores the entire chain of technology, from the semiconductor technology, through cooling mounting and assembly, beam shaping and system technology, to applications in the processing of such materials as metals and polymers. Includes theoretical models, a range of important parameters and practical tips. Author: Bachmann, Friedrich/ Loosen, Peter/ Poprawe, Reinhart Series Title: Springer Series in Optical Sciences Series Number: 128 Binding Type: Paperback Number of Pages: 560 Publication Date: 2010/11/29 Language: English Dimensions: 9.21 x 6.14 x 1.14 inches

40 Meters Infrared Lighting with 48pcs Infrared LED Lamp $26.09 FeaturesInfrared lightingWith 48 high-power infrared LED lampIrradiation distance of 40 metersDegree angle lighting option 60/30/15Suitable for long-distance infrared illuminationSpecificationInfrared lightingWith 48 high-power infrared LED lampIrradiation distance of 40 metersDegree angle lighting option 60/30/15Suitable for long-distance infrared illumination

Sennheiser SZI1029 Infrared Assistive Listening System $2200 Sennheiser SZI1029 Infrared Assistive Listening System The SZI 1029 is a high powered infrared emitter for wideband or narrow-band signals from an IR modulator. Covers up to 12,500 sq. ft. in single channel mode; 6,250 sq. ft. in 2-channel mode; 8,000 sq. ft. divided by number of channels in multi-channel mode. Features: High powered radiator with a maximum coverage area of 12,500 sq. ft. RF output for connecting additional radiators Automatic on/off function 5/8" and 3/8" threads for mounting 12 independent groups of transmitting diodes and malfunction indicator Greater coverage area Convenient interconnectivity Controlled from a single location Ease of installation Excellent reliability Available in black or white Specifications: Number of transmitting diodes: 144 IR light wavelength: 880 nm Average diode current: 110 mA Average radiating power: 5 W Coverage area: 12,500/6,250 sq. ft. narrow band multi-channel; 8,000 sq.ft/# of channels Sub-carrier frequency range: 30 kHz–6 MHz RF input sensitivity: 50 mV–3 V RF input impedance approx.: 5 kW Threshold voltage for automatic on/off function: 50 mV RF input/output: 2 x BNC sockets Operating voltage: 90–280 V AC (switchable PSU) internal 24 V DC Power consumption: Stand-by/operation 50 mA /1.6 A; 230 V operating voltage 350 mA; 120 V operating voltage 610 mA Recommended cabling: 50 ohms coax (RG58) Dimensions: 9.84" x 7.08" x 3.15" Weight approx.: 4 lbs. Get Your Sennheiser SZI1029 Infrared Assistive Listening System Today!

Nady IR-200/210 Infrared Hearing Assistance Systems $1249.99 Nady IR-200/210 Infrared Hearing Assistance Systems Features: Advanced 2.3/2.8MHz IR transmission eliminates the interference from ballast (fluorescent tube) lighting which was problematic with earlier 95/250KHz IR systems 4000 sq. ft. (370 sq. m) coverage Any number of IR-200 transmitters can easily be daisy-chained together for greater coverage via dual sync in and sync out connectors on each unit Can be wall-mounted or on optional stand for portable temporary setups Transmitter can be used with any number of IR-210 (stereo) or IR-211 (dual/separate channel) receivers High-gain IR LED (light-emitting diode) emitter panel with built-in amplifiers Two Audio Inputs, fully compatible with any audio source such as mixers, radios, VCRs, etc. Two Mic Inputs (for optional voice-overs) LED indicators for Signal On for both Audio In and Mic In inputs Built-in automatic level control (ALC) to eliminate audio peaks and ensure comfortable listening levels 28VDC external powering from supplied AC/DC adapter simplifies installation wiring requirements Headphone receivers feature ultra IR light-sensitive diodes for optimum reception and maximum range; A/B channel select switch (IR-211 only); On/Off power switch with LED indicator; two audio volume controls Uses two AAA batteries Adjustable headband for comfortable fit Get Your Nady IR-200/210 Infrared Hearing Assistance Systems Today!

Nady IR-200/211 Infrared Hearing Assistance Systems $1309.99 Nady IR-200/211 Infrared Hearing Assistance Systems Features: Advanced 2.3/2.8MHz IR transmission eliminates the interference from ballast (fluorescent tube) lighting which was problematic with earlier 95/250KHz IR systems 4000 sq. ft. (370 sq. m) coverage Any number of IR-200 transmitters can easily be daisy-chained together for greater coverage via dual sync in and sync out connectors on each unit Can be wall-mounted or on optional stand for portable temporary setups Transmitter can be used with any number of IR-210 (stereo) or IR-211 (dual/separate channel) receivers High-gain IR LED (light-emitting diode) emitter panel with built-in amplifiers Two Audio Inputs, fully compatible with any audio source such as mixers, radios, VCRs, etc. Two Mic Inputs (for optional voice-overs) LED indicators for Signal On for both Audio In and Mic In inputs Built-in automatic level control (ALC) to eliminate audio peaks and ensure comfortable listening levels 28VDC external powering from supplied AC/DC adapter simplifies installation wiring requirements Headphone receivers feature ultra IR light-sensitive diodes for optimum reception and maximum range; A/B channel select switch (IR-211 only); On/Off power switch with LED indicator; two audio volume controls Uses two AAA batteries Adjustable headband for comfortable fit Get Your Nady IR-200/211 Infrared Hearing Assistance Systems Today!

LightEmitting Diode $68.51 Light emitting diode. Oleg Losev, List of LED failure modes, Organic light emitting diode, Miniature light emitting diode, Solid state lighting, LED lamp, LED power sources, Electrical polarity of LEDs, LED circuit, LED as light sensor Author: Miller, Frederic P./ Vandome, Agnes F./ McBrewster, John Binding Type: Paperback Number of Pages: 74 Publication Date: 2009/10/08 Language: English Dimensions: 5.98 x 9.01 x 0.17 inches

Xantech 791-44 Infrared Repeater $92.99 0.94" Height x 6" Width x 2.25" Depth 1 x DC In 1 x Mini-phone - IR Output 10 12 V DC 791-44 791-44 Infrared Repeater 791-44 Infrared Repeater Jumpers Emitter port jumpers permit high or low power IR outpout High-speed opto-isolator for improved operation Parallel emitter ports drive 10 single or 10 dual emitters Requires either the 781ERGPS or 782ERGPS Power Supply Up to nine 790-00's can be connected to the 791-44 for control of up to 100 devices in a single zone STATUS terminal for connection of Xantech IR Receivers and Keypads that have status indicator LED's Quick connect stereo mini jack for Xantech IR Receivers that use a stereo mini plug Input signal Test-IR: Red LED Infrared Repeater Xantech Xantech Corporation Yes www.xantech.com

Dr Infrared Heater 1500W Dual System Portable Quartz Infrared Heater $189.99 The 2012 model Dr Infrared Heater, newly engineered and designed in the US, is one of the best alternative and most efficient heating sources for you this winter. The Dr Infrared Heater's Advanced Dual Heating System, combining PTC and Quartz Infrared Elements, keeps you warm this winter while saving on heating bills. Equipped with a Dual Heating System and High Velocity Low Noise blower, the Dr Infrared Heater increases the heat distribution and transfer rate and the result is heating your room to a comfortable temperature, fast. Testing shows the Dr Infrared Heater generates 60% more heat than most other heaters in the market. The Dr Infrared Heater is certified by Underwriters Laboratories (UL) USA & Canada, ensuring the highest safety standard . The Dr Infrared Heater is perfectly safe around children and pets and only gets warm to the touch. It does not have exposed heating elements that can cause a fire. The Dr Infrared Heater comes with Energy saving Auto Mode, high and low setting. When the mode is se Selling Unit: Each Type: Infrared Heater Features: Dual Heating System Size/Dimensions: 16" H x 13" W x 14" D Color/Finish: Cherry Power Rating (Watts): 1500 Voltage (Volts): 110V - 3 prong plug BTU Heat Rating (BTU): 5200

High-Power Diode Lasers: Fundamentals, Technology, Applications, With Contributions by Numerous Experts $389.03 No Synopsis Available

Simulation of Ingan Blue Laser Diode $172.06 In this book, the design of InGaN LDs structures including multi quantum wells (MQWs) active region device are described and investigated by integrated system engineering technology computer aided design (ISE TCAD) device simulator. The parameters of the LDs structures are varied and optimized for high performance. This optimization study involves aspects such as thickness of active region, doping, thickness of stopper layer region, thickness of quantum wells and quantum barriers, number of quantum wells and several approaches to improve and achieve high efficiency, low threshold current and high output power of InGaN LDs. The basic LDs structures treated here are FabryPerot type InGaN double heterostructure (DH), separate confinement heterostructure (SCH) and multi quantum wells (MQWs).High performance LD has been obtained by using multi quantum wells incorporated with the optimized parameters. The lowest threshold current, higher external quantum efficiency and characteristic temperature are obtained when the number of InGaN well layers is two, at our laser emission wavelength of 415 nm, which is related to the problem of inhomogeneous carrier. Author: Thahab, Sabah Binding Type: Paperback Number of Pages: 232 Publication Date: 2011/01/31 Language: English Dimensions: 5.98 x 9.00 x 0.53 inches

Smallest USB to IrDA Wireless Infrared Adapter Silver $7.9 Transform into standard infrared data telecom interface through standard USB interfaceSupport Win98/98se/ME/2000/XP Support hot plug, plug and playUSB 1.1 and IrDA complianceSupport Mode: SIR[2.4Kbps 115.2Kbps], MIR[576Kbps 1152Kbps] and FIR[4Mbps]Suppot high speed infrared mode at 4Mbps, no external power source requiredTurn various electrical products into wireless contact, such as PC, PDA, Digital camera, scanner, support all mobile telephone with infrared English user manual includedSize: 165*111*25 mmWeight: 102 g

Kuryakyn Diode Kit $6.76 " This kit is required when installing LED. lights as turn signals on a motorcycle with a single turn signal indicator light If this diode kit is not installed, power will back feed across the indicator light and all turn signals will ff"

StarTech.com USB to Infrared IrDA Adapter $19.99 1 Year 4 Mbps Windows 98 32-bit Windows 98SE 32-bit Windows 2000 32-bit Windows ME 32-bit Windows XP 32-bit Windows Vista 32-bit It offers easy wireless data access from an IrDA capable device (handheld PC/PDA, cell phone, digital camera, printer, etc) to a laptop or a desktop computer Infrared Adapter StarTech.com This USB to Infrared IrDA Adapter delivers a cost-effective solution for file transfers between a USB-capable desktop or laptop computer and an IrDA (Infrared) device._x000D_ The adapter provides data transfer speeds between the IR device and the IR-equipped computer at 115 Kbps (SIR). USB2IR2 uses low power consumption making it a suitable choice for wireless data transfers, file backups and synchronization and more._x000D_ This high quality USB-IrDA adapter is backed by StarTech.com's 1-year warranty and free lifetime technical support. USB USB to Infrared IrDA Adapter USB2IR2 www.startech.com

LifeSmart Power Plus 1000W/1500W Infrared Heater w Remote $176.16 Old Man Winter has arrived! And that means the heat is on. But have no fear--the LifeSmart Power Plus Infrared Heater helps bring warmth and comfort into your home, wherever and whenever you need it. Selective heating. Rather than raising the temperature in your entire house, this portable infrared heater helps to warm each room as needed, with built-in wheels that make it easy to glide from one room to the next. Choose between High (1500W), Low (1000W), and ECOnomy settings with the digital programmable thermostat, and adjust the timer to turn on or off, up to 12 hours in advance. Set it to shut off after you've fallen asleep, on when you wake in the morning--even when you return home from your busy day. How does it work? Unlike traditional fireplaces or space heaters, the Power Plus Infrared Heater uses internal copper plates to emit a radiant heat, which means there are no flames, fuels, or wire coils. Just set the thermostat to the desired temperature, and Power Plus takes care of the rest! Plus, it's cool to the touch, and comes with a convenient remote control to keep you cozy from anywhere in the room. The LifeSmart Power Plus Infrared Heater is a supplemental heater and is not meant to replace your home's heating system or heat an entire floor of a house. Turn up the style dial. Not only does this heater help chase away the chill, its attractive exterior fits right in with your home decor, so you can stay warm and toasty, and no one will be the wiser--except you, of course, for placing this great little heater in your home! From LifeSmart.

Night Detective® IR-K3SUPER 805 nm Super Powerful Infrared illuminator $199 Night Detective is proud to introduce our latest super powerful Infrared illuminators. The ND-IRK3SUPER series comes in three models with different radiation spectrum and power of illumination. Attached to Night Vision devices, these portable units produce amazing results while you remain totally invisible to humans and most animals.Though the spectrum of 805 nm of infrared light can be visible for some animals, using the ND-IRK3SUPER with 860 nm or even 940 nm light can guarantee you that you will be unnoticed to almost all animals and birds.Having much more power than any other infrared illuminators ND-IRK3SUPER essentially transform your night vision device to the next generation and allow you to see objects in complete darkness up to 300 yards.Specifications: Radiation Spectrum (nM): 805Effective range(yards): 250-300 Emitter type: IR diode Illuminator Power (mW): 150-180 Angle of illumination:3° Power Source: 3V (CR123) lithium Dimensions (in): 1.55 x 2.0 x 6.45 Weight (oz): 3.52 Operating temperature: -26°F to 112°F (-40°C to 50°C)

Night Detective® IR-K3SUPER 860 nm Super Powerful Infrared illuminator $199 Night Detective is proud to introduce our latest super powerful Infrared illuminators. The ND-IRK3SUPER series comes in three models with different radiation spectrum and power of illumination. Attached to Night Vision devices, these portable units produce amazing results while you remain totally invisible to humans and most animals.Though the spectrum of 805 nm of infrared light can be visible for some animals, using the ND-IRK3SUPER with 860 nm or even 940 nm light can guarantee you that you will be unnoticed to almost all animals and birds.Having much more power than any other infrared illuminators ND-IRK3SUPER essentially transform your night vision device to the next generation and allow you to see objects in complete darkness up to 300 yards.Specifications: Radiation Spectrum (nM): 860Effective range(yards): 200-250 Emitter type: IR diode Illuminator Power (mW): 90-120Angle of illumination:3° Power Source: 3V (CR123) lithium Dimensions (in): 1.55 x 2.0 x 6.45 Weight (oz): 3.52 Operating temperature: -26°F to 112°F (-40°C to 50°C)

Night Detective® IR-K3SUPER 940 nm Super Powerful Infrared illuminator $199 Night Detective is proud to introduce our latest super powerful Infrared illuminators. The ND-IRK3SUPER series comes in three models with different radiation spectrum and power of illumination. Attached to Night Vision devices, these portable units produce amazing results while you remain totally invisible to humans and most animals.Though the spectrum of 805 nm of infrared light can be visible for some animals, using the ND-IRK3SUPER with 860 nm or even 940 nm light can guarantee you that you will be unnoticed to almost all animals and birds.Having much more power than any other infrared illuminators ND-IRK3SUPER essentially transform your night vision device to the next generation and allow you to see objects in complete darkness up to 300 yards.Specifications: Radiation Spectrum (nM): 940Effective range(yards): 200-250 Emitter type: IR diode Illuminator Power (mW): 90-120Angle of illumination:3° Power Source: 3V (CR123) lithium Dimensions (in): 1.55 x 2.0 x 6.45 Weight (oz): 3.52 Operating temperature: -26°F to 112°F (-40°C to 50°C)

Infrared Day and Night Vision Digital Camera $53.3 1/4" clear sensorPixels:300k pixels resolutionMinimum illumination:0 lux/F1.2(IR LEDs on)Resolution VGA mode(640*480)High speed ARM CPU,advanced DSP processing and software control technologyAdopt Vimicro advanced DSPSupport max 8G TF cardPassive infrared ray(pir) motion-detection tech adoptedSupport hot-swapping,support the random power off video date reliable preservationSupply power:DC 5V,1APower:＜3WSize: 108*50*50 mm

Infrared K6 for Night Vision Devices from Night Detective® $118.95 Night Detective® is proud to introduce our latest super powerful Infrared illuminators. These portable units, attached to Night Vision devices, produce amazing results. Having much more power than the illuminators normally built into generation 1 devices, IR K-3 PRO and IR IK-6 essentially transform First Generation device into Generation 2. Technical Specifications:Radiation Spectrum (nM): 805Effective range(yards): 150-200Emitter type: IR diodeIlluminator Power (mW): 40-75Angle of illumination: 6°Power Source: 3V (CR123) battery (not included)Dimensions: 1.37" x 6.1"Weight: 3.52 oz.Operating temperature: -22°F to 112°°F (-30°C to 50°C)

Infrared K3 Pro Illuminator for Night Vision Devices from Night Detective® $128.95 Night Detective® is proud to introduce our latest super powerful Infrared illuminators. These portable units, attached to Night Vision devices, produce amazing results. Having much more power than the illuminators normally built into generation 1 devices, IR K-3 PRO and IR IK-6 essentially transform First Generation device into Generation 2. Technical Specifications:Radiation Spectrum (nM): 805Effective range(yards): 200-250Emitter type: IR diodeIlluminator Power (mW): 100Angle of illumination: 3°Power Source: 3V (CR123) battery (not included)Dimensions: 1.45" x 6.49"Weight: 4.93 oz.Operating temperature: -22°F to 112°F (-30°C to 50°C)

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laser "IR" 808nm diode high power 1000mW burning fire pencil

How Do Leds Work

LEDs, or light emitting diodes, are an electronic light source. LEDs were first discovered in Russia in the mid 1920's however no commercial use could be found for them until 1962 when they were introduced as a commercially viable electronic component. Early LED's were manufactured from gallium arsenide and produced a low intensity red and infrared light. Now other materials are added to the gallium allowing the creation of shorter light wavelengths and varying colours.

LEDs, like all diodes, are made of very thin layers of semiconductor material, one layer will have an excess of electrons, while the next will have a deficit of electrons. The LED consists of a chip of semiconducting material impregnated with other materials to produce the required colour. current flows easily from the positive of the chip into the negative, but will not flow easily in the opposite direction - cathode or P-type, to the negative side - cathode or N-Type. This is commonly known as a P-N Junction. Charge-carriers, electrons and holes flow into the junction from electrictrodes with differing voltages. When an electron meets a hole, it falls into a lower energy level, and releases energy in the form of a photon

The wavelength, or colour of the light emitted depends on the energy gap or bandgap of the materials used in the manufacture of the P-N Junction. LEDs are all manufactured from direct bandgap materials to produce light in the visible spectrum. Typcial indicator LEDs required very little power to operate, generally between 2V - 4V at no more than 20mW - 7W - 8W LED chips are now being made available to the general illumination market by manufacturers, and it is estimated they will directly replace incandescent lightbulbs within the next 5 years. Higher power and light output poses specific challenges for LED chip manufacturers to create a reliable product for the commercial market.

Today's high power LED's require much larger semiconductor dies for mounting, and also needed specially designed heat sinks to remove the excess heat from the semiconductor. Heat drastically reduces the life expectancy of the diode. LEDs are the most efficient form of lighting available today. LED manufacturer Lumileds in 2002 released a 5W LED chip. In 2003 Cree produced the first commercially available white LED with a luminous efficiency of 65lm/W. In 2008 Nexxus Lighting released the Array range of LED lamps, with a luminous efficiency of 105lm/W, the brightest, most efficient LED available commercially today. By comparison, halogen and incandescent lamps have a luminous efficiency of around 15lm/W, while fluorescent tubes produce 100lm/W. With LED manufacturing technology improving daily, it is easy to see why LEDs will be the lighting source of the future.

About the Author

Mike Brunt is a director of Specialized Lighting Concepts, and New Zealand company that has been at the forefront of fibre Optic, LED and solid state lighting technologies, with 8 years experience in working with and introducing these products to a new marketplace. http://www.specializedlightingconcepts.co.nz mike@specializedlightingconcepts.co.nz