Ikirahuri kinini gikozwe mu ndorerwamo isesuwe n’intoki

Ikirahuri kinini (loupe) ni indorerwamo ibyimbye iri mu murandasi ufite ikiganza. Gisanzwe gifite intera ya focus ya cm 25, ububasha bwa optique bwa dioptre 4, kandi kigurishwa nka "2×": ububasha bwacyo bwo kunini ni 0.25 m × 4 + 1 = 2 ku jisho rifite aho ribona hafi kuri cm 25. Hano indorerwamo isesurwa ikaba plano-convex mu kirahuri cya crown (indangamwanya yo guhinda urumuri hafi 1.52). Ku ndorerwamo ya plano-convex intera ya focus ni R / (n − 1), bityo intera ya focus ya cm 25 ikenera umuhengeri wa radius hafi cm 13. Indorerwamo ishyirwa mu mpeta y’igiti yakozwe ku musarani ifite ikiganza; ibyo bipimo ni ibyacu.