OPTICAL MATERIAL AND USES THEREOF
First Claim
Patent Images
1. An optical material comprising:
- a phosphor which has an excitation wavelength in a range from 220 nm to 500 nm, a fluorescence wavelength in a range from 380 nm to 650 nm, a maximum excitation wavelength in a range from 350 nm to 400 nm, and a maximum fluorescence wavelength in a range from 400 nm to 500 nm; and
an ultraviolet light absorber,wherein a transmittance of the optical material measured at a thickness of 2 mm satisfies the following features (1) to (3);
(1) The light transmittance at a wavelength of 440 nm is 80% or higher,(2) The light transmittance at a wavelength of 420 nm is 70% or lower, and(3) The light transmittance at a wavelength of 410 nm is 5% or lower.
1 Assignment
0 Petitions
Accused Products
Abstract
An optical material of the present invention includes: a phosphor which has an excitation wavelength in a range from 220 nm to 500 nm, a fluorescence wavelength in a range from 380 nm to 650 nm, a maximum excitation wavelength in a range from 350 nm to 400 nm, and a maximum fluorescence wavelength in a range from 400 nm to 500 nm; and an ultraviolet light absorber, and the light transmittance thereof measured at a thickness of 2 mm satisfies the following features (1) to (3):
- (1) The light transmittance at a wavelength of 440 nm is 80% or higher.
- (2) The light transmittance at a wavelength of 420 nm is 70% or lower.
- (3) The light transmittance at a wavelength of 410 nm is 5% or lower.
16 Citations
23 Claims
-
1. An optical material comprising:
-
a phosphor which has an excitation wavelength in a range from 220 nm to 500 nm, a fluorescence wavelength in a range from 380 nm to 650 nm, a maximum excitation wavelength in a range from 350 nm to 400 nm, and a maximum fluorescence wavelength in a range from 400 nm to 500 nm; and an ultraviolet light absorber, wherein a transmittance of the optical material measured at a thickness of 2 mm satisfies the following features (1) to (3); (1) The light transmittance at a wavelength of 440 nm is 80% or higher, (2) The light transmittance at a wavelength of 420 nm is 70% or lower, and (3) The light transmittance at a wavelength of 410 nm is 5% or lower. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 11)
-
-
10. An optical material,
wherein, at a thickness of 2 mm, a light transmittance at a wavelength of 440 nm is 80% or higher, the light transmittance at a wavelength of 420 nm is 70% or lower, and the light transmittance at a wavelength of 410 nm is 5% or lower.
-
12. A composition for an optical material comprising:
-
a phosphor having an excitation wavelength in a range from 220 nm to 500 nm, a fluorescence wavelength in a range from 380 nm to 650 nm, a maximum excitation wavelength in a range from 350 nm to 400 nm, and a maximum fluorescence wavelength in a range from 400 nm to 500 nm; an ultraviolet light absorber; and a resin for optical material or a polymerizable compound. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
-
Specification
-
- Resources
Litigation Campaign Assessment
Thank you for your request. You will receive a custom alert email when the Litigation Campaign Assessment is available.
×
-
Current AssigneeMitsui Chemicals Incorporated (Mitsui Chemicals)
-
Original AssigneeMitsui Chemicals Incorporated (Mitsui Chemicals)
-
InventorsKOJIMA, Kouya, TANAKA, Mamoru, OGAWA, Tatsuya
-
Application NumberUS14/767,712Publication NumberTime in Patent OfficeDaysField of SearchUS Class Current1/1CPC Class CodesC09K 11/02 Use of particular materials...C09K 11/06 containing organic luminesc...C09K 2211/1011 Condensed systemsC09K 2211/1029 containing one nitrogen ato...C09K 2211/1033 with oxygenC09K 2211/1088 containing oxygen as the on...C09K 2211/1092 containing sulfur as the on...G02B 1/04 made of organic materials, ...G02B 1/10 Optical coatings produced b...G02B 5/223 containing organic substanc...G02C 7/022 Ophthalmic lenses having sp...G02C 7/10 Filters, e.g. for facilitat...
