Title:
A radiation generator and a radiography system
Document Type and Number:
Japanese Patent JP6071411
Kind Code:
B2
Abstract:
A radiation generating apparatus includes a radiation generating unit and a diaphragm unit that functions as a projector-collimator configured to simulate a radiation field with a visible-light field. The diaphragm unit includes a light source configured to generate visible light, an optical lens configured to control a state of diffusion of the visible light emitted from the light source, and field-limiting blades. The light source and the optical lens are provided between a radiation emission window and the field-limiting blades. The light source is movable into and retractable from a path of radiation generated by the radiation generating unit.
Inventors:
Yoichi Igarashi
Yoichi Ando
Yasuo Ohashi
Yoichi Ando
Yasuo Ohashi
Application Number:
JP2012233426A
Publication Date:
February 01, 2017
Filing Date:
October 23, 2012
Export Citation:
Assignee:
Canon Inc
International Classes:
G01N23/04; A61B6/08; H05G1/00
Domestic Patent References:
| JP2009240469A | ||||
| JP55051280U | ||||
| JP7148159A | ||||
| JP2004209259A | ||||
| JP2005006971A | ||||
| JP2006204457A |
Foreign References:
| US20070030957 |
Attorney, Agent or Firm:
Keisuke Watanabe
Yoshihiro Yamaguchi
Yoshihiro Yamaguchi