noun
optical character
Technical term used in fields such as OCR (optical character recognition). Refers to characters designed to be read by optical devices.
光学文字認識は、紙の文書をデジタルデータに変換する技術です。
Optical character recognition is a technology that converts paper documents into digital data.
光学文字認識 is the full term for OCR, while 光学文字 refers specifically to the characters themselves.
Compound of 光学 (optics) and 文字 (character), likely a calque from English 'optical character'.