Title:
受光素子用フィルタおよび受光装置
Document Type and Number:
Japanese Patent JP4359659
Kind Code:
B1
Abstract:
Disclosed is a filter for a light receiving element, which can sufficiently eliminate disturbance due to sunlight and the like out of doors. A filter for a light receiving element according to one embodiment of the present invention is used for a light receiving element which receives signal light having a known spectral distribution. The filter for a light receiving element according to one embodiment of the present invention is configured so that when the energy density of the ambient light in the light receiving element is represented by N1 and the energy density of the signal light in the light receiving element is represented by N2, N1/(N2) 2 is minimized under constraints.
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Inventors:
Yasuaki Inoue
Application Number:
JP2009061857A
Publication Date:
November 04, 2009
Filing Date:
March 13, 2009
Export Citation:
Assignee:
Nalux Co., Ltd.
International Classes:
G02B5/20
Domestic Patent References:
| JP3214195B2 | ||||
| JP3272699B2 |
Attorney, Agent or Firm:
Naoya Fushimi