Film image reader

Abstract

Abstract PURPOSE:To obtain the inexpensive film image reader of simple structure by measuring the quantity of light of a transmission light image on the input surface of an image scanner, calculating and displaying the difference from a target light quantity, and varying the quantity of light manually. CONSTITUTION:A base film 109 is inserted in the optical path of a projector unit 118 and an illumination lamp 110 is turned on. The image processing part 114 of the image scanner 119 reads the quantity of transmitted light by a data sampling circuit and a CPU 15 judges how large the current light quantity is about the target light quantity of the image scanner 119 and indicates the variation quantity of the light quantity on the display device of an operation part 116. A user operates the knob of a variable resistor 112 to set the quantity of light. Thus, the quantity of light is varied manually, so the device is simple and inexpensive.

Inventors

• 👤 Katsuyoshi Maejima
• 👤 前島　克好
• 👤 Masayuki Hirose
• 👤 正幸 広瀬
• 👤 Fumio Mikami
• 👤 文夫 三上
• 👤 Sohei Tanaka
• 👤 壮平 田中
• 👤 Kazuyoshi Takahashi
• 👤 一義 高橋
• 👤 Yoshiaki Takayanagi
• 👤 義章 高柳
• 👤 Koki Kuroda
• 👤 綱紀 黒田

Bibliographic Details