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What are laser diodes?
What are laser diodes?
Every Aegis laser product begins with a visible semiconductor laser diode which is rated according to its wavelength and output power. Laser diodes require additional components and a collimated lens to produce a visible dot.

The technical definition of collimation is the process and devices required to produce a beam of light particle in which the paths of all the particles are parallel. In non-technical terms, collimation is necessary because light is emitted from the laser diode in a square plane and a configuration without direction (scattered). A precise, collimated lens is installed in the front of the laser diode and part of the circuitry is designed to provide proper collimation.

Laser beam range
Laser beam range tests are conducted by most laser product manufacturers under controlled conditions, and the best results are included in their specifications. For example, indoor range tests are typically conducted in a completely darkened area.
Aegis indoor range tests are performed in a dark air conditioned facility that is 3,610 feet (1,100 meters) long. In this environment, the average laser beam ranges for 650nM and 635nM standard Models are 1486 feet (453 meters) and 2822 feet (860 meters), respectively. Outdoor tests are performed in direct sunlight, with average laser beam ranges for 650nM and 635nM standard Models of 144 feet (44 meters) and 217 feet (66 meters), respectively. The laser beam ranges presented throughout this web site and in all Aegis promotional materials are understated...
When one laser product has a greater range than another, the beam projected by the first product is obviously brighter and more powerful. Since a laser dot cannot be normally be seen at distances over 1,000 feet (305 meters), most people do not appreciate the significance of range as it relates to their application. For example, the dot produced by most 670nM and 660nM laser products are not visible in brightly lit environments, under halogen lighting, direct sunlight, or on front or rear panel projection screens. This is an important specification to review before purchasing a laser product, and why all Aegis Laser products are either 650nM or 635nM.