Midwest Optical Systems Light Balancing
Midwest Optical Systems — Light Balancing Overview
The MidOpt FL550 is used to eliminate the strong greenish color that often results when illuminating with white fluorescent lighting. The FL550 absorbs light in the middle of the visible spectrum, which is where most color cameras have their strongest response, eliminating a greenish cast, resulting in true-to-life color rendition. All MidOpt filters can also be purchased unmounted and in custom dimensions upon request from Machine Vision Direct.
The MidOpt LA080 corrects the ~80 mired color change created by some high color temperature lighting (appearing bluish) including some Xenon and metal halide lamps while eliminating a large portion of the UV spectrum. All MidOpt filters can also be purchased unmounted and in custom dimensions upon request from Machine Vision Direct.
The MidOpt LA120 counteracts the ~120 mired color change created by traditional white LEDs (appearing very bluish in cast) as well as some similar xenon and metal halide lighting, while eliminating a large amount of the UV spectrum. Instead of using warm white LEDs, placing an LA120 filter over the camera lens and using cool white (blueish) LEDs results in the same apparent color, but a light head with higher intensity, longer life, and lower cost. All MidOpt filters can also be purchased unmounted and in custom dimensions upon request from Machine Vision Direct.
The MidOpt LB080 is used to raise lower color temperatures (by 80 mired) by highlighting a higher percentage of the red component of the spectrum – to create more natural looking color. It is sometimes used with fiber optic lighting. All MidOpt filters can also be purchased unmounted and in custom dimensions upon request from Machine Vision Direct.
The MidOpt LB120 is used to raise color temperature by reducing unnatural red tones created by some sodium and mercury lighting. LB120 filters are placed over the camera change and shift the apparent color by 120 mired. All MidOpt filters can also be purchased unmounted and in custom dimensions upon request from Machine Vision Direct.