Collection: 940nm Bandpass Filter
Lasers operating at a wavelength of 940 nanometers (nm) are situated in the near-infrared (NIR) range of the electromagnetic spectrum. This wavelength is particularlyuseful in various applications, especially in surveillance, medical treatments, and industrial processes.
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Advantages of 940nm Lasers
Invisibility: The primary advantage of 940nm lasers is their invisibility to the naked eye, making them ideal for applications requiring stealth.
Reduced Glare: Compared to 850nm lasers, 940nm lasers produce less visible light, which can be beneficial in sensitive environments.
Effective for Sensitive Equipment: Many security cameras and night vision devices are designed to work well with 940nm light, allowing for effective surveillance without visible illumination. -
Challenges with 940nm
Sensitivity Issues: Some cameras may not be as sensitive to 940nm light compared to longer wavelengths like 850nm, which can limit their effectiveness in certain applications. This can result in reduced range and performance, often by up to 50% compared to 850nm systems.
Limited Range: While 940nm lasers are excellent for covert applications, their effective range is generally shorter than that of 850nm lasers, necessitating careful consideration of the application requirements.