Technical Library

• Case Study: Testing Molded Plastic Lenses

• Resolving Questions About MTF

• Resolving Questions About MTF, Part 2

• Revisiting the Hartmann Test

FAQs

Fundamentals

• What is a collimator? How does it work? (PDF 72KB)

• What is an autocollimator? How does it work? (PDF 42KB)

• What is the relationship between DC background level and MTF? (PDF 32KB)

• What is distortion? (PDF 29KB)

• What is 20/20 vision? (PDF 2773KB)

• What is the limiting resolution of a lens? (PDF 23KB)

Product Questions

• What are the options for the X and Y axes? (PDF 3918KB)

• What are the options for the focus axis? (PDF 1122KB)

• What is the repeatability of autofocusing? (PDF 588KB)

• If I test my lens without the prism I intend to use it with, are my results valid? (PDF 112KB)

• Can I set the "black level" on my camera? (PDF 24KB)

• How do I make a custom lens holder? (PDF 1289KB)

• How do I hold very small diameter lenses? (PDF 64KB)

• What is the measurement resolution of the OS1 autocollimator? (PDF 33KB)

• What is the spectral sensitivity of the OpticStudio camera? (PDF 46KB)

• Can I use PixelScope to measure the MTF of a CCD camera or map the sensitive area of a pixel? (PDF 473KB)

• Can I use an OS200 to measure radius of curvature? (PDF 831KB)