Red High Power Laser Diodes

How will a 100 mW red laser diode module unit that requires "250mA at 3V" work with les than 3V of power?

I am looking to make a red burning laser and want to use rechargable batteries. the laser requires "around 250mA at 3V". What would be my best battery choice. 2 AAA non rechargable, 2 AAA rechargible NiMH batteries, or a single 2V battery? If you can help out with this, thanks.
ps the link to the ebay diode and unit that I would use is (http://cgi.ebay.com/HIGH-POWER-RED-BURNING-LASER-DIODE-100-mW-MODULE-UNIT_W0QQitemZ300253036772QQihZ020QQcategoryZ4661QQssPageNameZWDVWQQrdZ1QQcmdZViewItem#ebayphotohosting)
I meant "single 3 volt" battery

voltage is not power.

Actually, it requires 3 volts plus at least 2 volts for a 8 ohm resistor.
so you need a 5 or 6 volt battery. You may get by with 4.5 volts, and a 6 ohm resistor, but you would run less risk of burning out the laser diode with 6 volts and a 12 ohm resistor.

Very important: Even a reflection from this laser can cause permanent eye damage. That means if the beam hits a shiny piece of metal and reflects out the window and hits a passerby in the eye, they can be blinded. Or you can be blinded.

When these are used in industry they are in a controlled room with no windows, and you are only allowed in if you are wearing the correct protective goggles.

Notice all the warnings and liability messages on that web page?

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The Diodes $93.99 High Quality Content by WIKIPEDIA articles The Diodes were a Canadian punk/new wave band formed in 1976. They released five albums: Diodes (1977), Released (1979), ActionReaction (1980), Survivors (1982), and Time/Damage Live 1978 (2010). One of the first Toronto bands playing that style of music, The Diodes helped foster the scene in the city. Along with manager Ralph Alfonso, The Diodes opened the first Canadian punk nightclub in 1977, called Crash n Burn, where many of the citys punk bands at that time played. The first band to play the club was The Nerves, on a double bill with The Diodes. The club was closed at the end of the summer of 1977 due to complaints by the Liberal Party of Ontario (the principal tenants of the building). Author: Surhone, Lambert M./ Timpledon, Miriam T./ Marseken, Susan F. Binding Type: Paperback Number of Pages: 130 Publication Date: 2010/08/01 Language: English Dimensions: 6.00 x 9.02 x 0.31 inches

500mw red Laser Pointer ,blue Laser Pointer ,Green Laser Pointer 532nm 1x16340 Green Laser green laser pen green laser torch $36.84 532nm 1x16340 red Laser ,blue Laser ,Green Laser ,Green Laser pointer /high power green laser pointer pen/green beam laser

20pcs/lot 100mw 650nm high power red laser pointer pen with star cap/ red laser kaleidoscope+free shipping $156.84 100mw red laser pointer with star cap/ red laser kaleidoscope star pointer wavelenth: 650nm free shipping

Power Grow Comb Hair Laser Treatment with Grooming Kit $20 Stops hair loss and makes hair grow thicker, stronger and healthierSpectacular advance in home hair treatment with laserCombines Laser Photo Therapy that sends nourishing low level laser light energy into y hair with Bio Stimulating Vibration Technology to stimulate circulationStudies show that the combined action of 3 beams of light plus a massage function significantly increases hair strength, improves hair quality and stops hair loss 7 Red 660 Nanometer Energy Diodes stimulate the deepest parts of hair follicles 7 Blue 470 Nanometer Energy Diodes regenerates surface of the hair follicle High precision Laser Beam Window nourishes the root of the hair and helps makes hair follicles thicker With Bio Stimulating Vibration Technology to boost circulation and increase blood flow Powered by 4*AAA battery (Not included) Package included:1x Power grow comb1x Massage comb1x Manicure set1x Brush1x ManualSpecifications:Model: WB/096Input voltage: 6V DV (4xAAA size batteries)Laser wave length: 650nm positive/ negative 5nmLaser class: 4.5mW Class 3R certifiedRed LED wavelength: 660 nm positive. Negative 5nmBlue LED wavelength: 470nm positive/negative 5nmOutput: 420mW without vibration600mW with vibrationWeight: 693gDimension: 340*47*44mm

Green Laser Pointer II $69.99 Okay, just about everyone has a red laser pointer. Heck, we even sell a fine one here at ThinkGeek. But, we're pretty sure you want to be a superior geek - and doing it with a green laser is the way to go. This pointer is significantly brighter (about 50 times) than a red laser pointer and because of its unusual color it is much more noticeable. I mean come on, a 532 nm green laser wavelength is obviously superior to a laughable 650 nm red laser wavelength. And unlike a red laser, the green beam itself can be seen in mid-air in dark conditions, not just the laser beam dot. This allows the green laser pointer to be used for pointing to star constellations (skypointing) and also just generally look cool as hell. The green laser beam dot can be seen at much greater distances than with a red laser pointer. Since green direct injection laser diodes aren't readily available, this pointer is based on the use of Diode Pumped Solid State Frequency Doubled (DPSSFD) laser technology. A high power IR laser diode at 808 nm pumps a tiny block of Nd:YVO4 generating light at 1,064 nm which feeds a KTP intracavity frequency doubler crystal to produce the green beam at 532 nm. Features of this unit include: Very bright green laser at 532 nm wavelength Output power of Range of approximately 9,000 ft (2600 m) in darkness 1.1 mm beam diameter at source Momentary push button switch Solid, heavy duty construction Constant wave output (as opposed to pulse output) Takes 2 "AAA" batteries (not included) Can be used for skypointing, projection on low clouds, signaling, highlighting potential explosives Dimensions: 5.6" x .5" dia 90-day warranty Available in Black or Silver color Interested in quantity discounts or custom logo imprinting? More info here. Warning: Green lasers are very powerful. Pointing at aircraft may land you in jail. Without a Monopoly card to get you back out. Use it wisely.

Light-Emitting Diodes (Hardcover) $186.1 Revised and fully up-dated, the second edition of this graduate textbook offers a comprehensive explanation of the technology and physics of LEDs such as infrared, visible-spectrum, ultraviolet, and white LEDs made from III-V semiconductors. Elementary properties such as electrical and optical characteristics are reviewed, followed by the analysis of advanced device structures. With nine additional chapters, the treatment of LEDs has been vastly expanded, including new material on device packaging, reflectors, UV LEDs, III-V nitride materials, solid-state sources for illumination applications, and junction temperature. Radiative and non-radiative recombination dynamics, methods for improving light extraction, high-efficiency and high-power device designs, white-light emitters with wavelength-converting phosphor materials, optical reflectors, and spontaneous recombination in resonant-cavity structures are discussed in detail. With exercises, solutions, and illustrative examples, this textbook will be of interest to scientists and engineers working on LEDs and graduate students in electrical engineering, applied physics, and materials science.

Green-Red Laser Pointer $59.99 Many people have a red laser pointer and some really cool people have the green laser pointer. But very few people have them both built into a single unit. Being the cutting edge geek that you are, we know you'll choose this dual output beauty. Why would you want to be like everybody else? The first laser pointer that projects a brilliant GREEN beam from one end and also a high-power RED beam. The GREEN beam is just as bright as other green pointers, range up to 2 miles in darkness, wavelength 532 nm. The green laser beam (not just the dot) is visible at night. The RED beam is the most powerful red laser allowed by the FDA, range 4000 ft in darkness. Power output Green Laser Specifications Output Mode - Constant wave Wavelength - 532 nm Batteries: 2 x AAA (included) Beam Dia. at Source - 1 mm Output Variance - 10% after 20 min. Body Color - Silver Beam Divergence - 1.2 mRad Output Power - Switch - Push Button Operating Lifetime - 2000 hours Class - IIIa Range 10,000 ft (3000m) in darkness Red Laser Specifications Wavelength - 650 nm Polarization - Linear (50:1) Batteries: 2 x AAA Beam Dia. at Source - 1 mm Output Variance - 5% after 20 min. Body Color - Silver Beam Divergence - 1.2 mRad Output Power - Switch - Push Button Operating Lifetime - 5000 hours Class - IIIa Range 4,000 ft (1300m) in darkness Dimensions - 6.8 in. long, 0.55 in. dia.

Red and Near Infrared Microcavity LightEmitting Diodes $196.21 Lighting is essential to modern society but it accounts for nearly 20 of the electrical energy usage. Thus efforts to increase the conversion efficiencies of light sources are attracting more and more attention. Potential high efficiency light sources are fluorescent lamps or lightemitting diodes (LEDs). Modern LEDs show internal quantum efficiencies of virtually 100 . However, in the case of standard LEDs most of this light is trapped inside the device because of total internal reflection at the interface semiconductorair. Several methods have been developed in order to increase the extraction efficiency. This can be done either by optimizing the device geometry in order to increase the escape cone or by incorporating a resonant structure in order to force the internal emission into the existing escape cone. The latter approach is called microcavity LED (MCLED) or resonant cavity LED (RCLED) and is presented in detail in this work. Novel concepts to further increase the external quantum efficiency are discussed and experimental results are presented. Author: Joray, Reto Binding Type: Paperback Number of Pages: 268 Publication Date: 2009/05/01 Language: English Dimensions: 9.00 x 6.00 x 0.56 inches

High Performance Red Laser with Battery and Charger (5mw,650nm,Black) $31.79 Color: Red Laser Pointer Function: For Astronomers Output: 5mw Wave Length Range: 532nm-650nm Wave Length: 650nm Shape: Flashlight Shaped Material: Aluminum Alloy Power Supply: 1 x 16340 Operation Voltage(V): 3.6V Working Temperature (degree): 15 #8451;~32 #8451; Dimension(mm): 105 x 22 x 22 Shipping Weight(Kg): 0.086

AU11406 Red Laser with built-in Mount & Rail $49.99 BARSKA’s GLX compact mounted laser sights are designed with an accessory rail mounted conveniently under the laser. The T6 aluminum body allows for the GLX laser sight to provide a strong, stable platform to mount accessories to its integrated military standard picatinny rail. The GLX compact laser sight is extremely versatile in its mounting options. The built-in mount is a weaver standard compact mount with a stabilizing cross bar insert for added support. The compact mount allows secure mounting to the shortest of rails on handguns and rifles. Using newly developed high impact rated 5 mW compact laser diodes BARSKA has developed two compact laser models. This model emits a highly visible red laser beam that produces red 635 nm wavelength light which is highly visible to the human eye. BARSKA has designed the GLX compact laser sight to withstand extremely high impact shock generated by large caliber rifles and hand guns. The GLX laser finds itself equally at home on a rifles picatinny rail forends as it is on a handguns bottom rail. The GLX compact laser has a easy accessible on/off slide switch ideal for hand guns. The slide switch can also be bypassed by adding a cable pressure switch which is securely screwed to the back of the laser. Standard windage and elevation adjustments are accessible externally on the front side and bottom of the laser. Powered by a high capacity CR-123A lithium battery (1pc battery included) the GLX compact laser can emit a high intensity laser beam constantly for accurate targeting.

Chauvet Min Laser Star $99.99 Chauvet Min Laser Star Features: Pint-sized green star and red beam laser projector for use in small parties that need big coverage Independent control of the red and green laser diodes allow for true customization of the effect Covers a huge area and looks great with or without fog Set the color and rotation speeds wirelessly with the included wireless remote control Motor spins in both directions and at variable speeds to create an ever-changing star field Includes 2 different mounting options to fit the style and mood of any event or party Awesome sound-activated and automated programs dance to the beat of the music or run by them selves Complies with FDA / CDRH standards for Class 3R Specifications: Light source: 532nm/50mW green laser diode, 650nm/100mW red laser diode Coverage angle: 100° Power and current: 120V, 60Hz: 5W, <0.1A operating, <0.1A inrush Power and current: 230V, 50Hz: 5W, <0.1A operating, <0.1A inrush AC power: 12VDC 500mA (external power supply: 100-240VAC 50/60Hz) Weight: 0.7lbs (0.3kg) Size: 4.3 x 3.3 x 1.8in (111 x 85 x 45mm) Get Your Chauvet Min Laser Star Today!

Chauvet MiN Laser FX $119.99 Chauvet MiN Laser FX Features: Fun-sized and feature-packed laser with 6 different effects for hours of entertainment Throws thousands of red and green beams into the air and all over the ceilings and walls Independent control of the red and green laser diodes allow for true customization of the effect Covers a huge area and looks great with or without fog Set the color and rotation speeds wirelessly with the included wireless remote control Motor spins in both directions and at variable speeds to create many different looks Includes 2 different mounting options to fit the style and mood of any event or party Awesome sound-activated and automated programs dance to the beat of the music or run by them selves Complies with FDA / CDRH standards for Class 3R Specifications: Light source: 532nm/50mW green laser diode, 650nm/100mW red laser diode Coverage angle: 100° Power and current: 120V, 60Hz: 5W, <0.1A operating, <0.1A Power and current: 230V, 50Hz: 5W, <0.1A operating, <0.1A inrush AC power: 12VDC 500mA (external power supply: 100-240VAC 50/60Hz) Weight: 0.7lbs (0.3kg) Size: 4.3 x 3.3 x 1.8in (111 x 85 x 45mm) Get Your Chauvet MiN Laser FX Today!

High-Performance Tactical Red Laser Sight with Rail Mount (Black) $49.99 Color: Red Laser Pointer Function: For Outdoor Sporting Output: 5mw Wave Length Range: 532nm Wave Length: 532nm Shape: Module Shaped Material: Aluminum Alloy Power Supply: 1x CR123A Lithium Battery (included) Dimension(mm): 11.5 x 4.2 x 2.8 Shipping Weight(Kg): 0.1328

RED LASER SIGHT W/ BUILT-IN MOUNT $49.99 BARSKA’s GLX compact mounted laser sights are designed with an accessory rail mounted conveniently under the laser. The T6 aluminum body allows for the GLX laser sight to provide a strong, stable platform to mount accessories to its integrated military standard picatinny rail. The GLX compact laser sight is extremely versatile in its mounting options. The built-in mount is a weaver standard compact mount with a stabilizing cross bar insert for added support. The compact mount allows secure mounting to the shortest of rails on handguns and rifles. Using newly developed high impact rated 5 mW compact laser diodes, BARSKA has developed two compact laser models. This model emits a highly visible red laser beam that produces red 635 nm wavelength light which is highly visible to the human eye. BARSKA has designed the GLX compact laser sight to withstand extremely high impact shock generated by large caliber rifles and hand guns. The GLX laser finds itself equally at home on a rifles picatinny rail forends as it Specifications: Red Laser w/built-in mount & Rail. Built-in weaver standard compact mount with a stabilizing cross bar insert. Tactical Picatinny mounting rail. Windage and Elevation. Includes Momentary on/off long cable switch and one CR-123A lithium battery. Parts: Backed by BARSKA’s one year laser warranty

Chauvet Min Laser RGX $99.99 Chauvet Min Laser RGX Features: Extremely compact laser effect that projects thousands of multi-colored beams into the air and all over the ceiling and walls Independent control of the red and green laser diodes allow for true customization of the effect Covers a huge area and looks great with or without fog Set the color and rotation speeds wirelessly with the included wireless remote control Motor spins in both directions and at variable speeds to create an ever-changing star field Includes 2 different mounting options to fit the style and mood of any event or party Awesome sound-activated and automated programs dance to the beat of the music or run by them selves Complies with FDA / CDRH standards for Class 3R Specifications: Light source: 532nm/50mW green laser diode, 650nm/100mW red laser diode Coverage angle: 100° Power and current: 120V, 60Hz: 5W, <0.1A operating, <0.1A inrush Power and current: 230V, 50Hz: 5W, <0.1A operating, <0.1A inrush AC power: 12VDC 500mA (external power supply: 100-240VAC 50/60Hz) Weight: 0.7lbs (0.3kg) Size: 4.3 x 3.3 x 1.8in (111 x 85 x 45mm) Get Your Chauvet Min Laser RGX Today!

Free shipping 450nm 1W High power blue laser pointer $179.99 1W High power blue laser pointer 450nm High power blue laser pointer Fire match Waterproof

Red Laser Pointer Pen 5mW 650nm Silver $4 Introductions:This 650nm Red Laser Pointer Pen Start From 10 Units is small and exquisite, portable and with richer applications. Laser pointer is a good guide for your traveling, and a good tool for pointing to the faraway target or stars and sending out the SOS signal, making your travelling funny and interesting. This red laser pointer is also the best gift for friends and families.Features:Extremely bright red laserPower saving, compact and reliablePoint at any desired targets on projection screens, video monitors, and presentation graphicsThis high-quality laser pointer incorporates the latest technology on green laser optics and microelectronicsUse this laser pointer pen to point at any desired targets, project screens, lectures, or video monitors, presentations, museum and tour guides, point to the stars, and inspectionWith a flashlightSpecifications:Laser Color: RedLaser Wavelength: 650nmLaser Output power: 5mWSwitch: BottonPower Supply: 3 x AG3 Button CellsSize: 134(H)*9(D) mm

OXLasers 200mW waterproof high power red laser pointer torch with a focusable lens burn matches in 4 meters free shipping $47.37 200mW Burning waterproof Red laser pointer torch with focusable lens burn mtaches in 4 meters + light cigars Free shipping

Red high powered Senkat diode (16x DVD burner) laser

LaserKey Projection Keyboard with Bluetooth

You don't have to be a sci-fi fan to appreciate the awesomeness of this gadget! The LaserKey projects a fully-functional keyboard onto your desktop in half the space and tons more style than a traditional keyboard.

Use this keyboard with your computer or smart phone to enjoy responsive keys, featherlight typing, portability and Bluetooth functionality everywhere you go.

This Projection Keyboard includes all the standard keys, functions and shortcuts of a regular keyboard, including: full QWERTY keyboard, menu key, and FN key. The LaserKey lets you perform two- and three-key shortcuts like CTRL+S, CTRL+P, CTRL+Enter and everyone's favorite: CTRL+ALT+DEL. You can also press and hold keys, for those times when you need to AAAaaaaa! You can even use switch between keyboard and mouse modes.

Fast typers need a keyboard that can keep up. The LaserKey supports typing speeds of up to 400 characters a minute! The highly responsive keys means your fingers can take a break from beating up that clunker of a keyboard that you used to use. With the LaserKey Projection Keyboard, you can also look forward to no more crying over spilt milk. Or water. Or pizza. Go ahead and type with sticky fingers without worrying about sticky keys.

Worried that a gadget this cool is difficult to set up? We have four words for you: "Plug and play, baby!" Connect the LaserKey projection keyboard to your computer with USB, turn it on, and start typing! It couldn't be simpler.

Once you go LaserKey, you'll never go back(space) on another keyboard again!

This space-age gadget is brought to you at a down-to-earth price by the leader in the best-value, budget-friendly electronics, Chinavasion.

At a Glance...
• The LaserKey projects a fully functional keyboard on your desk or tabletop.
• Compatible with: computers, smart phones, desktop tablets/UMPC, and PDAs/PMPs.
• Responsive, accurate keys.
• Keyboard can perform all standard 2- and 3-key shortcuts.

China Manufacturer Specifications

• Primary Function: Projection Keyboard and Mouse
• Light Source: Red laser diode
• Keyboard layout: 17mm sized QWERTY layout
• Keyboard size: Approx. 240mm*105mm
• Illumination: Visible in incandescent light of 1800 lux or more
• Power source: Internal lithium ion battery
• Compatible Operating Systems:
  - Microsoft Windows Mobile 2003 Pocket PC, Smartphone
  - Microsoft Windows Mobile 5.0 Pocket PC, Smartphone
  - Microsoft Windows Mobile 6.0 Pocket PC, Smartphone
  - Palm OS 5.x
  - RIM OS for Blackberry
  - Microsoft Windows 2000/XP/Vista
  - Symbian OS s60 3rd Edition (for Nokia)
• Certifications: FCC, CE
• Manufacturer Ref: XM869XKHLX
• Catalog Ref: Projection Keyboard, Bluetooth Projection Keyboard, Bluetooth Keyboard,

Product Notes

• Audible "clicks" provide responsiveness while you type
• Keyboard is highly visible, even in a brightly lit office
• Works best on a non-reflective, flat, opaque surface

Package Contents

• LaserKey Projection Keyboard
• English user manual
• AC adapter 100-240V, 50/60Hz
• Carrying case
• USB cable
• CD (includes drivers for Blackberry, Palm, PC, PocketPC, Smartphone, and Symbian, as well as English and Korean user manuals)

FAQ - Frequently Asked Questions

• Is it hard to use? Just like the first time you used a keyboard, you may have to practice a few times to get a feel for the location of the keys. If you already type well on a traditional keyboard (no peck-and-choosing), it should take you about 10 minutes of practice to get up to speed on this keyboard.
• How fast can I type on this keyboard? If you're a speed demon, you will appreciate this keyboard's speed and responsiveness. The LaserKey Projection Keyboard can support about 400 characters per minute.
• Does this projection keyboard work with my language? This keyboard works exactly the same as a regular USB keyboard. If you use a specific input software for your language, this keyboard will function exactly the same as a regular keyboard would. But the keys displayed by the Projection Keyboard do not change languages. They are fixed as the standard English QWERTY keys in the pictures above. You can type Latin characters and additional symbols using the "FN" key, such as: ?, è, ?, ?, ù.
• How do I switch between using the keyboard and the mouse? One key on the projected keyboard allows you to switch between using the keyboard and the mouse functions.
• Can I adjust the volume of the clicks I hear from the projection keyboard? Yes, press (don't hold) the "FN" key and then press "Ins" to increase the volume. Or press "FN" then "Del" to decrease the volume.

• Login for Wholesale Discount Price
• Written by: B.H. (using the LaserKey Projection Keyboard!)

Visit the website: http://www.boutic.power-heberg.com
You will find much more.

Current Reviews:    1 This product was added to our catalog on Wednesday 15 April, 2009.

Reviews for: (LaserKey Projection Keyboard with Bluetooth)

 great item by mark penas on 05/03/2009: this is one of the best product ever i can wait to purchase one!
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