Title:
VISIBILITY CORRECTING NEAR INFRARED CUT FILTER, AND OPTICAL LOW PASS FILTER AND VISIBILITY CORRECTING ELEMENT USING THE SAME
Document Type and Number:
Japanese Patent JP2006195373
Kind Code:
A
Abstract:
To provide a visibility correcting near infrared cut filter which has a sufficient visibility correcting performance and is capable of realizing a thin and low-cost optical low pass filter.
The visibility correcting near infrared cut filter of a coating type is provided. The visibility correcting near infrared cut filter has the maximum transmittance in the region of wavelength 450 to 550 nm, and has such a spectral characteristic as to exhibit transmittance of 80% or less of the maximum value at wavelength 400 nm, transmittance of 90% or less of the maximum value at wavelength 600 nm and transmittance of 80% or less of the maximum value at wavelength 650 nm.
Inventors:
OKADA SEIJIRO
TAKAHASHI TOMIHIRO
TATEWAKI MASAHIRO
TAKAHASHI TOMIHIRO
TATEWAKI MASAHIRO
Application Number:
JP2005009346A
Publication Date:
July 27, 2006
Filing Date:
January 17, 2005
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
G02B5/28; H01L27/14
Attorney, Agent or Firm:
Ikeuchi, Sato & Partners