What is ISO 14490 ‑ 9 - Test methods for field curvature about?
ISO 14490 ‑ 9 is the ninth part of the ISO 14490 series that discusses optics and photonics.
ISO 14490 ‑ 9 specifies the test method for the determination of the deviation from a flat image surface, i.e., the sagittal and tangential field curvature of telescopic systems and observation...
BS ISO 14490-9:2019 history
2019BS ISO 14490-9:2019 Optics and photonics. Test methods for telescopic systems - Test methods for field curvature