Spectacle lens that reflects blue light, and spectacles equipped with the spectacle lens
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United States of America Patent
Stats
-
Jun 23, 2020
Grant Date -
Oct 19, 2017
app pub date -
Dec 1, 2015
filing date -
Dec 1, 2014
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Provided a spectacle lens including a lens base material and a multilayer film provided on each surface of an eyeball-side surface and an object-side surface of the lens base material, in which a mean reflectance RB(object) in a wavelength range of 430 to 450 nm measured on the object-side surface of the spectacle lens is equal to or more than 1.00%, and a mean reflectance RUV(eye) in a wavelength range of 280 to 380 nm measured on the eyeball-side surface of the spectacle lens is less than or equal to 15.00%.
First Claim
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International Classification(s)
- 2015 Application Filing Year
- G02B Class
- 9095 Applications Filed
- 7457 Patents Issued To-Date
- 82 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- G02B Class
- 0 % this patent is cited more than
- 5 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Dec 23, 2027 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Dec 23, 2031 |
