Pointer Pen
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"ABC Products" - Key Chain ~ Pet Laser Toy & Exerciser (5 Exciting Images)
Sale Price: $6.87
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Key chain Laser features 5 exciting laser images ~~ Change lens cap for different images ~~ Uses three LR44 batteries (included) ~~ Great for exercising dogs, cats, fish, birds and lizards as they chase the beam ~~ Has push button off/on switch ~~ Not intended for children under 5 years
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2 in 1 LED Light And Laser Pointer Key Chain
List Price: $6.50
Sale Price: $0.69
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Entertain stray cats, give impromptu presentations, and find your way in the dark with our 2 in 1 Keychain. Press one button: get a bright white LED flashlight. Press the other button: get a bright red laser...
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Acupuncture Pen/ Pointer (SD-21)
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Acupuncture Pen is combining the ancient knowledge of Traditional Chinese medicine with sophisticated electronic circuitry, the Acupuncture Pen Utilizes completely painless, very low frequency stimulation, without piercing the skin...
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Dimple Green Laser Pen Astronomy Grade for Military, Lecturers and Law Enforcement (Black)
List Price: $159.00
Sale Price: $5.75
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Brand new high quality 5mW green laser pointer. We ensure that every high power green laser pointer is hand calibrated and tested to output at least 29.99mw and thus offers the expected stunning power expected of a real constant wave green (532nm) laser pointer, much brighter to look at than a regular red laser pointer and always with a visible green beam...
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10mW Blue Violet Laser Presentation Pointe
List Price: $199.99
Sale Price: $9.29
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Blue lasers are on the cutting edge of consumer laser pointers. This beautiful blue-violet laser is more pleasing to look at than red or green!
Please note, because the human eye is more sensitive to green than to blue, this laser pointer will appear less bright than a similar green one...
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Shocking Car Remote Control Key Chain with LED Light and Laser Pointer
Sale Price: $3.99
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This key chain looks like a real car key. One of the ones where you push the button and the key pops out of the key chain. The only difference is when you push that button it gives and electric shock. So when you give your keys to a friend they'll never expect the button to shock them...
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Ultimate Geek Pen
Sale Price: $9.90
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This high tech gadget has enough bells and whistles to make most geeks drool. Twist the metal tip one way and you get a ballpoint pen, twist it the other way and you get a stylus tip for use with PDAs and games...
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Red Laser Pointer Pen - Cobalt Blue 10PK
Sale Price: $19.95
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BUNDLE PACKAGE OF 10!! Stunning Cobalt Blue laser pointer pen; Smooth twist-locking retractable ballpoint pen; Attractive gold-tone accent band & clip; Durable quality construction; Momentary on/off laser switch; Dimensions (L x W): 5 3/8 x 3/8; Wavelength/Range: 650nm/500 yds; Power:
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Here are some more information for Pointer Pen:
Why Blue Laser Pointers are Much More Expensive Than Green Laser Pointers
One of the most obvious differences between a blue laser pointer and a green laser pointer is price. A 10 mW blue laser pointer cost $700 compared to the price of the equivalent 15mW green laser pointer that cost $100.
It is not just blue laser pointers that are more expensive. Blue laser modules, OEM lasers and lab lasers are also much more expensive than their green counterparts. The reason for such a large price differences are the processes used to generate the laser beam, the components used that the manufacturing volumes.
Beam generation process
Both blue and green laser pointers use a pump diode that gives out infrared 808nm light that is used to pump the same type of crystals. The pumped crystals in turn give out light in the far infrared spectrum. The difference between blue and green lasers is the optical coatings on the pumped crystals and the type of far infrared light produced by these crystals.
The pumped crystals in a green laser pointer have an optical coating that causes the crystals to give out mostly 1064nm infrared light that is frequency doubled by another crystal to green 532nm light. The pumped crystals in a blue laser pointer have a different coating that causes the crystals to give out mostly 946nm infrared light that is also frequency doubled by another crystal to 473nm light.
The components
The process of producing 1064nm light is much more efficient than making 946nm light so blue laser pointers need a large pump diode to produce the same power. The larger pump diode makes blue laser pointers more expensive. The frequency doubling crystals in blue laser pointers are rarer and more expensive than those in green laser pointers.
Manufacturing volumes
Green laser pointers have better visibility than blue laser pointers and have less temperature problems at higher power levels. This means that green lasers are used for a larger number of diverse applications such as astronomy, pointing, burning and signaling and are manufactured in very high volumes. Blue laser pointers on the other hand are much more limited in their application and are manufactured in much lower volumes. Like any product, the lower the volume produced, the more expensive the product is.
Article is courtesy of Dragonlasers - No 1 lasers, laser pointer and green laser online store
About the Author
Frank is from Dragonlasers at http://www.dragonlasers.com
where can i buy a laser pointer pen?
please don't give me internet crap as an answer.
you can get a laser pointer pen at Staples or Office Depot. thats where i have picked up some recently.
Victorinox's £100,000 challenge for secure USB stick
USB flash memory inside Swiss Army knife promises to be 'unhackable' Victorinox, maker of the original Swiss Army knife, today launched its range of Victorinox secure data storage devices in Europe. The Victorinox Secure Pro is a USB flash drive using fingerprint biometric security to authenticate AES256 encryption technology inside.
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