How to Compare Green Laser Pointers
Green laser pointers were once expensive and difficult to find for the average consumer. Now green laser pointers can be bought at hobby shops, electronic stores and even at the corner drugstore. While green laser pointers all share the basics of having a power supply powering a green laser diode, there are differences in construction and use among them. Knowing what to look for when you are comparing green laser pointers can help you to choose the one that will work best for you.
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Instructions
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Check the type of battery being used to power the green laser pointer: "AA" batteries are less expensive and more readily available than "button" batteries.
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See whether the switch turning on the laser is a push button or a sliding switch. A push button gives you more control over turning the laser on and off.
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Verify whether the green laser pointer is using a glass or plastic lens to focus the laser. A plastic lens will go cloudy over time and diffuse and weaken the output of the beam.
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See whether the green laser pointer has an infrared filter to eliminate dangerous IR radiation during use.
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Check the warranty for the green laser pointer to see how long before it can not be returned if it becomes defective.
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Tips & Warnings
Green laser pointers with a power output exceeding <5MW are illegal and dangerous. These should not be purchased or used by the average consumer.
Never aim a laser pointer at a person's face, since the beam can damage his eyes.
