The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 19, 2008
Filed:
Mar. 21, 2005
Yuichi Masaki, Kawasaki, JP;
Yutaka Akino, Isehara, JP;
Yuichi Masaki, Kawasaki, JP;
Yutaka Akino, Isehara, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An evaluation apparatus which evaluates a sample having a porous layer. The apparatus includes a light source which irradiates the sample with light, an imaging spectrometer which spectroscopically measures light reflected by the sample and senses an image, a first calculator which obtains amplitude information on an amplitude of a spectral reflectance of the sample based on the image sensed by the imaging spectrometer, a memory which holds in advance relationship information representing a relationship between amplitude information of spectral reflectance of a member having a porous layer and an absorption coefficient of the porous layer of the member, and a second calculator which obtains an absorption coefficient of the sample based on the amplitude information obtained by the first calculator and the relationship information held in the memory.