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Patent Searching and Data


Title:
ELECTRONIC COLOR-CHART DEVICE
Document Type and Number:
WIPO Patent Application WO/2014/042140
Kind Code:
A1
Abstract:
This electronic color-chart device is provided with a plurality of LEDs having different peak wavelengths and uses said LEDs to display a color chart consisting of an image that serves as a color reference. If the emission-intensity distribution of each LED is normalized such that the maximum intensity is 1, the LEDs include the following: a plurality of first LEDs that have a peak separation of at most 50 nm and include an LED that has a full width at half maximum intensity of at most 40 nm; and a second LED that has an emission intensity of at least 0.4 at a wavelength of 555 nm and has a full width at half maximum intensity of more than 40 nm.

Inventors:
TOMIZAWA KAZUNARI
SHIMODAIRA YOSHIFUMI (JP)
Application Number:
PCT/JP2013/074341
Publication Date:
March 20, 2014
Filing Date:
September 10, 2013
Export Citation:
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Assignee:
SHARP KK (JP)
UNIV SHIZUOKA NAT UNIV CORP (JP)
International Classes:
G01J3/52; H05B44/00
Domestic Patent References:
WO2006119750A22006-11-16
Foreign References:
JP2002199231A2002-07-12
JP2009088374A2009-04-23
Attorney, Agent or Firm:
SANO SHIZUO (JP)
Shizuo Sano (JP)
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