This standard applies to immersion and dry biological microscopes (hereinafter referred to as microscopes) that use eyepieces with a mechanical barrel length of 160 mm and a parfocal distance of 10 mm as specified in JIS B 7118 (eyepieces for microscopes). ). However, this does not apply to those using objective lenses with an infinite optical barrel length, inverted biological microscopes, and those with special structures.
JIS B 7132:1998 history
2009JIS B 7132-1:2009 Microscopes -- Imaging distances related to mechanical reference planes -- Part 1: Tube length 160 mm