IP Library › Patent Application 14584673
Patent Application
App. No. 14/584,673

HIGH PERFORMANCE SELECTIVE LIGHT WAVELENGTH FILTERING PROVIDING IMPROVED CONTRAST SENSITIVITY

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Quick Facts
Patent No.
US None
App. No.
14/584,673
Abstract

The present invention relates to ophthalmic systems and coatings comprising a selective light wavelength filter, wherein said selective filter provides improved contrast sensitivity.

Claims (24)

1 . An ophthalmic system comprising:

a filter that selectively blocks 10-40% of light in a wavelength range of 420-440 nm;

wherein the system has an average transmission of at least 80% across the visible spectrum;

wherein white light has a CIE of (0.33+/−0.05, 033+/−0.05) when transmitted through the system; and

wherein the system has a yellowness index of 15 or less.

2 . The system of claim 1 , wherein the filter selectively blocks 10-30% of light in a wavelength range of 420-440 nm.

3 . The system of claim 1 , wherein the filter selectively blocks 10-20% of light in a wavelength range of 420-440 nm.

4 . The system of claim 1 , wherein the filter selectively blocks 5-40% of light in a wavelength range of 420-440 nm.

5 . The system of claim 1 , wherein the filter selectively blocks 5-30% of light in a wavelength range of 420-440 nm.

6 . The system of claim 1 , wherein the filter selectively blocks 5-20% of light in a wavelength range of 420-440 nm.

7 . The system of claim 1 , wherein the system has an average transmission of at least 85% across the visible spectrum.

8 . The system of claim 1 , wherein the system has an average transmission of at least 90% across the visible spectrum.

9 . The system of claim 1 , wherein the filter comprises an antireflective component.

10 . The system of claim 1 , wherein the system further comprises UVA and UVB blocking.

11 . The system of claim 1 , wherein the filter comprises porphyrin dye and derivatives thereof.

12 . The system of claim 1 , wherein the filter comprises a film comprising poly vinyl butyral.

13 . The system of claim 1 , wherein the system has a yellowness index of 10 or less.

14 . The system of claim 1 , wherein the system has a yellowness index of 9 or less.

15 . The system of claim 1 , wherein the system has a yellowness index of 7 or less.

16 . The system of claim 1 , wherein the system has a yellowness index of 5 or less.

17 . The system of claim 1 , wherein the system causes a maximum color shift of no more than 20 just noticeable difference units in the CIE color space for each tile of the Munsell Color System under a D65 daylight illuminant.

18 . The system of claim 1 , wherein the system reduces scotopic luminance by less than 15% and photopic luminance by less than 15%.

19 . The system of claim 1 , wherein the filter is absorptive.

20 . The system of claim 1 , wherein the filter is reflective.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 25, 2015
From: ISHAK, ANDREW W.; BLUM, RONALD D.; MCGINNIS, SEAN P.; PACKARD, MICHAEL B.
To: HIGH PERFORMANCE OPTICS, INC.
Reel/Frame 035027/0267 →