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Patent Searching and Data


Title:
OPTICAL FILTER AND IMAGING DEVICE COMPRISING SAME
Document Type and Number:
WIPO Patent Application WO2015122595
Kind Code:
A1
Abstract:
The present invention provides an optical filter and an imaging device comprising the optical filter, the optical filter comprising: a binder resin; a light absorption layer containing at least two kinds of light absorbents dispersed in the binder resin; and a near-infrared reflection layer, wherein the light absorbents comprise a first light absorbent having maximum absorption in a wavelength range of 680 to 700nm and a second light absorbent having maximum absorption in a wavelength range of 700 to 750nm, and the near-infrared reflection layer has a wavelength, which has a transmittance of 50% with regard to light incident in a direction perpendicular to the optical filter, existing in a range of 680 to 730nm and satisfies equation 1 below: ΔE* ≤ 1.5 (equation 1) wherein ΔE* refers to a color difference between light, which has been incident in a direction perpendicular to the optical filter and has passed through the optical filter, and light, which has been incident at an angle of 30° with regard to the direction perpendicular to the optical filter and has passed through the optical filter.

Inventors:
LAH WOO JOO (KR)
Application Number:
PCT/KR2014/010336
Publication Date:
August 20, 2015
Filing Date:
October 31, 2014
Export Citation:
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Assignee:
LAH WOO JOO (KR)
International Classes:
G03B11/00; G02B5/20
Foreign References:
KR20100137229A2010-12-30
KR20130108186A2013-10-02
JP2008102340A2008-05-01
KR20120078435A2012-07-10
JP2008304531A2008-12-18
Attorney, Agent or Firm:
DANA PATENT LAW FIRM (KR)
특허법인 다나 (KR)
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