Title:
OPTICAL FILTER, AND IMAGING DEVICE COMPRISING SAME
Document Type and Number:
WIPO Patent Application WO/2015/034217
Kind Code:
A1
Abstract:
The present invention provides an optical filter that comprises an optical absorption layer and a near-infrared reflection layer, the optical absorption layer having an absorption maximum in the wavelength range of 670-720nm, the wavelength at which the light transmittance of the near-infrared reflection layer is 50% being in the range of 690-720nm, and the filter satisfying mathematical formula (1). The present invention also provides an imaging device comprising the optical filter. [Mathematical formula (1)] ΔE*≤1.5. In mathematical formula (1) ΔE* represents the colour difference between light that has entered in the vertical direction of the optical filter and passed through the optical filter, and light that has entered in the direction at an angle of 30° to the vertical direction of the optical filter and passed through the optical filter.
Inventors:
KIM JOO YOUNG (KR)
YANG SEON HO (KR)
CHIN HONG SEOK (KR)
LEE MIN SOO (KR)
YANG SEON HO (KR)
CHIN HONG SEOK (KR)
LEE MIN SOO (KR)
Application Number:
PCT/KR2014/008109
Publication Date:
March 12, 2015
Filing Date:
August 30, 2014
Export Citation:
Assignee:
LMS CO LTD (KR)
International Classes:
G02B5/22; G03B11/00
Foreign References:
| KR20100137229A | 2010-12-30 | |||
| JP2013050593A | 2013-03-14 | |||
| JP2006106570A | 2006-04-20 | |||
| JP2006085196A | 2006-03-30 |
Download PDF: