*If your magnification is outside of 0.1 to 10, or ratio of WD/FOV is very high or low (0.05 to 20), or your FOV/Sensor size is very high or low, or you have a very short WD (less than 100mm), or have any questions, contact us first!

Focal length calculatorlenses

Solar Eclipse Glasses and Viewers offer ISO and CE-Certified protection against harmful solar radiation and are suitable for direct solar viewing. Durable and reusable plastic glasses are available individually, and cardboard glasses and handheld viewers are available individually or in multipacks of 10, 25, and 100 pieces. The glasses and viewers meet transmission requirements of scale for 12-16 of EN 169/1992 and the ISO 12312-2:2015 standard. Solar Eclipse Glasses and Viewers are ideal for safely viewing solar phenomena such as sunspots, flares, and eclipses while being an excellent choice for education.

WD - Working Distance - distance from the front of the lens FOV - Field of View, width of picture FL - focal length of the lens.

Focal length Calculatortelescope

Please select your shipping country to view the most accurate inventory information, and to determine the correct Edmund Optics sales office for your order.

This focal length to FOV lens calculator is a first order calculator and is very useful for most machine vision applications*.