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Title:
X-RAY FILTER AND X-RAY FILTER APPARATUS
Document Type and Number:
Japanese Patent JP2012063191
Kind Code:
A
Abstract:

To provide an x-ray filter capable of suppressing reduction in the intensity of filtered x-rays and capable of reducing x-rays with energy higher and lower than the energy of a target x-ray.

The x-ray filter composed of a periodical structure film divides an x-ray made incident on the periodical structure film at a fixed angle into an energy region A reflected by total reflection of the periodical structure film, an energy region B reflected by Bragg reflection corresponding to the structure period of the periodical structure film and a transmission energy region located between the energy region A and the energy region B to transmit the x-ray. The x-ray filter selects and obtains an x-ray transmitted through the transmission energy region out of incident x-rays.


Inventors:
KUBO WATARU
MIYATA HIROKATSU
Application Number:
JP2010206382A
Publication Date:
March 29, 2012
Filing Date:
September 15, 2010
Export Citation:
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Assignee:
CANON KK
International Classes:
G21K3/00; G21K1/00; G21K1/06
Attorney, Agent or Firm:
Takuma Abe
Sogo Kuroiwa