Title:
【発明の名称】原稿走査用光学装置
Document Type and Number:
Japanese Patent JP2527328
Kind Code:
B2
Abstract:
An optical device provided with a document illuminating means, for use in an electrostatic copying machine or the like. The document illuminating means (10) has an illuminating lamp (12), a main reflecting means (14) partly surrounding the illuminating lamp (12), and a subsidiary reflecting means (16) disposed opposite to the illuminating lamp (12) and the main reflecting means (14). The difference between a first quantity (L1) of light illuminating a document via a first illuminating light path (28) ranging from one side to the document (8) without reflection by the subsidiary reflecting means (16) and a second quantity (L2) of light illuminating the document (8) via a second illuminating light path (30) ranging from the other side to the document with reflection by the subsidiary illuminating means (16) is adjusted to not more than 15% of the sum (L1 + L2) of the first and second quantities.
Inventors:
Takehiro Minami
Application Number:
JP10205087A
Publication Date:
August 21, 1996
Filing Date:
April 27, 1987
Export Citation:
Assignee:
Mita Industry Co., Ltd.
International Classes:
G03B27/50; G03B27/54; G03G15/04; (IPC1-7): G03B27/54
Domestic Patent References:
| JP60150546U | ||||
| JP6146541U |
Attorney, Agent or Firm:
Naozumi Ono (1 person outside)