Old 06-09-2015, 06:35 AM #1
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Default Photo's of the inside of a cheap red laser line barcode scanner

Here's some cheap laser entertainment, a fifteen dollar barcode scanner:



Opened up:







Scanning:



The unit will run off of any USB wall wart power cube too and doesn't require software. Only one problem, the laser beam will time out after a few seconds each time you pull the switch.

Here's a movie:

MOV 19 of 19, IR, LED and Laser Project

Cheap on ebay $15 new: High Quality Black USB Handheld Laser Barcode Bar Code Scan Reader Scanner | eBay



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Divergence to spot size calc: - 1 mRad is about .057 degrees which expands to be very roughly ~10% the diameter of the moon or sun at their distances.

Divergence Calculator: pseudonomen137's JScript mRad Calculator - Measure your lasers beam dia. at 1 foot & then 20'.

Online calc. to determine spot intensity at different mRad's & powers: http://tinyurl.com/divergence-calculator

Laser Power Density Calculator: Laser Power Density Calculator - Ophir

Build a beam expander to reduce divergence: http://tinyurl.com/BeamExpander

University YAG Project The Professor's Homebuilt Lasers Site - YAG Lasers

YAG Power Calc. Laser Peak Power Calculator - Ophir

Angular Size Calculator; use with diode angle of radiation spec. for lens dia. at FL: Angular Size Calculator

RHD's Calc: http://lsrtools.1apps.com/RelativeBr...&useRaleigh=on

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Last edited by Alaskan; 06-11-2015 at 02:51 AM.
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Old 06-09-2015, 05:43 PM #2
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Default Re: Inside a cheap red laser line barcode scanner

ever since I have gotten into this hobby, I always wanted to buy one and take it apart to see what was inside lol cool video dude
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Last edited by APEX1; 06-09-2015 at 05:44 PM.
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Old 06-09-2015, 09:45 PM #3
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Default Re: Inside a cheap red laser line barcode scanner

The swinging mirror assembly is made from plastic with aluminum plated on it which swings back and forth from the interaction of a low frequency oscillator fed magnetic coil pushing and pulling through the EM field against a very small magnet embedded in the plastic arm opposite the mirror on the other side of the pivot point. That's a long sentence explaining how part of it works.
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Attention new brothers of the collimated light!

Newbie advice: Please take the time to first make an introduction in the Welcome section before posting questions.


Divergence to spot size calc: - 1 mRad is about .057 degrees which expands to be very roughly ~10% the diameter of the moon or sun at their distances.

Divergence Calculator: pseudonomen137's JScript mRad Calculator - Measure your lasers beam dia. at 1 foot & then 20'.

Online calc. to determine spot intensity at different mRad's & powers: http://tinyurl.com/divergence-calculator

Laser Power Density Calculator: Laser Power Density Calculator - Ophir

Build a beam expander to reduce divergence: http://tinyurl.com/BeamExpander

University YAG Project The Professor's Homebuilt Lasers Site - YAG Lasers

YAG Power Calc. Laser Peak Power Calculator - Ophir

Angular Size Calculator; use with diode angle of radiation spec. for lens dia. at FL: Angular Size Calculator

RHD's Calc: http://lsrtools.1apps.com/RelativeBr...&useRaleigh=on

High Current Pulse Drivers: https://tinyurl.com/ya7whuk3

Last edited by Alaskan; 06-09-2015 at 09:46 PM.
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Old 06-10-2015, 12:44 AM #4
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Default Re: Inside a cheap red laser line barcode scanner

Quote:
Originally Posted by Alaskan View Post
The swinging mirror assembly is made from plastic with aluminum plated on it which swings back and forth from the interaction of a low frequency oscillator fed magnetic coil pushing and pulling through the EM field against a very small magnet embedded in the plastic arm opposite the mirror on the other side of the pivot point. That's a long sentence explaining how part of it works.
That's some pretty cool stuff right there. You never truly realize how much stuff uses laser tech until you actually stop to think about it. And even then its used in more electronics then one could think of lol
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(2) 2WM140 BUILDS
1.5W CAS!O 501B
2W M462 WICKED LASER REPLICA HOST
1.2W 520 LABBY
500MW 532 PLE-PRO
180MW 532 EBAY OVERKILL


Some of my stuff is for sale check them out here <---link

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Old 06-10-2015, 04:32 AM #5
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Default Re: Inside a cheap red laser line barcode scanner

Measured the output power, it's close to 2.2 milliwatts when the pot which controls the output power is turned all the way up. The second pot towards the front out output side adjusts the amount of sweep for the mirror, adjusted all the way down the swing is reduced to about a 12 inch wide red bar on the wall six feet away.
__________________

Attention new brothers of the collimated light!

Newbie advice: Please take the time to first make an introduction in the Welcome section before posting questions.


Divergence to spot size calc: - 1 mRad is about .057 degrees which expands to be very roughly ~10% the diameter of the moon or sun at their distances.

Divergence Calculator: pseudonomen137's JScript mRad Calculator - Measure your lasers beam dia. at 1 foot & then 20'.

Online calc. to determine spot intensity at different mRad's & powers: http://tinyurl.com/divergence-calculator

Laser Power Density Calculator: Laser Power Density Calculator - Ophir

Build a beam expander to reduce divergence: http://tinyurl.com/BeamExpander

University YAG Project The Professor's Homebuilt Lasers Site - YAG Lasers

YAG Power Calc. Laser Peak Power Calculator - Ophir

Angular Size Calculator; use with diode angle of radiation spec. for lens dia. at FL: Angular Size Calculator

RHD's Calc: http://lsrtools.1apps.com/RelativeBr...&useRaleigh=on

High Current Pulse Drivers: https://tinyurl.com/ya7whuk3
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