Different from a simple green laser pointer only used for temporary dot positioning work, on consideration of its long operating time lasted green light source and green reference dot projection in machine vision inspection work fields, it has become a major trend for engineers and professionals to apply a high brightness device of a TTL modulation adjustable focus 515nm green laser diode module. It gets constant power source supply and special use of thermal emitting system inside a high duration metal housing tube. When it gets proper use of a TTL high speed modulation power source supply, it is able to make continuous green light and green reference dot projection onto a lot of working surfaces constantly and conveniently.
Usually the special use of TTL modulation has just made 515nm green laser diode module different from a formally used DC power source. It is not only able to make continuous green light emission, but also gets special use of on/off switch. High speed switching response perfectly matches camera exposure timing, eliminating overexposure and motion blur. Pulsed operation reduces heat generation and optical degradation, extending the module's lifespan. Besides the adoption of a qualified 515nm wavelength semiconductor laser diode, this green dot laser also gets special use of a metal heat sink cooling system inside a durable anodized aluminum alloy housing tube. It achieves superior nice heat dissipation and increasing stability green light source generation in long term use, without any light decay, dim or blur.
Cooperated with a qualified glass coated lens and adjustable focus optic lens, owing to its low laser beam divergence, this TTL modulation adjustable focus 515nm green laser diode module enables high sensitivity green light emission, and highly clear contrast green reference dot projection on surfaces such as metal, reflective plastic, and light-colored workpieces, making it less likely to be overwhelmed by ambient light compared to red light. When green laser dot is concentrated and fine, resulting in minimal coordinate positioning errors. This ensures data accuracy for vision-based measurement and position correction, making it suitable for micron-level precision inspection.
Available with wide range output power of 5mW to 50mW and higher power up to 100mW to 200mW, being made with built-in APC, ACC driving circuit board, TTL modulation 515nm green laser diode module keeps work with constant green light and green reference dot projection, and long serving lifetime of more than 8,000 hours. It uses timing logic to emit light only during the image capture instantly, significantly reducing interference from overhead workshop lighting and natural light, thereby simplifying image processing. When green alignment laser makes easy mounting on camera brackets or assembly line frames, it is facilitating the retrofitting of both new and existing vision systems. Highly clear and precise green reference line is getting wide use for multiple fields, including camera synchronization and calibration, work piece position offset detection, dimensional reference positioning and measurement, and 3D vision assisted ranging etc.
link source: https://www.berlinlasers.com/ttl-modulation-adjustable-focus-515nm-green-laser-diode-module