DEVICE AND METHOD FOR MEASURING SHARPNESS

• Main Author: ISHIDA HIROAKI
• Format: Patent
• Language: English; Japanese
• Published: 12.01.2016
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

PROBLEM TO BE SOLVED: To provide a sharpness measurement device or the like which is capable of measurement with a short exposure time in which a light quantity loss is small and which is constituted of a simple mechanism not requiring a movement mechanism of an optical comb.SOLUTION: Disclosed is a sharpness measurement device for measuring sharpness of a film. This device includes: irradiation means for irradiating the film with light from a light source via an optical comb; imaging means for imaging the optical comb and the film; and calculation means for calculating the sharpness of the film based on brightness of image data imaged by the imaging means. 【課題】光量ロスが少ない短い露光時間での測定が可能であり、光学櫛の移動機構を必要としない簡易な機構で構成される鮮明度測定装置等を提供する。【解決手段】本発明に係る鮮明度測定装置は、フィルムの鮮明度を測定する鮮明度測定装置であって、光源からの光を、光学櫛を介して前記フィルムに照射する照射手段と、前記光学櫛及び前記フィルムを撮像する撮像手段と、前記撮像手段により撮像した画像データの輝度に基づき前記フィルムの鮮明度を算出する算出手段と、を備えることを特徴とする。【選択図】図１