MidOpt Filters are designed to emulate the output of common LEDs. Not only do LEDs emit light over a relatively broad wavelength range compared to lasers, manufacturing tolerances result in center wavelengths that can vary by as much as +/- 10nm. The angle of incident light may also vary greatly. MidOpt Bandpass Filters are intentionally designed to provide a passband that is broad enough to accommodate the entire output of the LED.
MidOpt filters are designed to emulate the output of common LEDs. Not only do LEDs emit light over a relatively broad wavelength range compared to lasers, manufacturing tolerances result in center wavelengths that can vary by as much as +/- 10nm. The angle of incident light may also vary greatly. MidOpt Bandpass Filters are intentionally designed to provide a passband that is broad enough to accommodate the entire output of the LED.
Monochromatic (single color) LED lighting is the most commonly used application-specific illumination. LEDs omit specific wavelengths over a narrow region of the spectrum. MidOpt Filters control the quality and quantity of light entering the vision system. These filters pass only the output of lighting used for inspection, while blocking all unwanted ambient light, sucha as sunlight and overhead lighting.
Testing With Broad Spectrum Lighting & MidOpt Bandpass Filters
Testing the effects of monochromatic LED illumination in a system is easily accomplished by using available broad spectrum light and a MidOpt Filter Kit. When testing, each bandpass filter achieves a similar result as the matching LED wavelength would yield. This aids in determining the appropriate LED wavelength for the application.
Being equipped with a large variety of lighting options can be impractical and expensive. Testing with MidOpt Filters offers significant savings in time and resources when working toward an optimal lighting solution. Once an appropriate wavelength range has been determined, a bandpass filter is then used to complement the chosen lighting and control potential interference from ambient light.
MidOpt Filter Test Kits allows for quick solutions to applications, and an excellent resource for evaluating and improving image quality.