Ocular lens

• US 9,709,826 B2
• Filed: 03/27/2015
• Issued: 07/18/2017
• Est. Priority Date: 09/28/2010
• Status: Expired due to Fees

• Current Assignee: Singapore Health Services Pte Limited (MOH Holdings Pte Limited)
• Original Assignee: Singapore Health Services Pte Limited (MOH Holdings Pte Limited)
• Inventors: Foulds, Wallace Stewart, Luu, Chi Dzung
• Primary Examiner(s): Collins, Darryl J
• Application Number:
  US14/670,573
• Publication Number:
  US 20150198820A1
• Time in Patent Office: 844 Days
• Field of Search: 35115949, 35115959-15965, 359885-892
• CPC Class Codes: F21V 9/08 for producing coloured light, e.g. monochromatic; for reducing intensity of light with provision for controlling the colour F21V9/40
• CPC Class Codes: G02C 2202/24 Myopia progression prevention
• CPC Class Codes: G02C 7/04 Contact lenses for the eyes disinfection or sterilisation of contact lenses A61L12/00
• CPC Class Codes: G02C 7/10 Filters, e.g. for facilitating adaptation of the eyes to the dark; Sunglasses
• CPC Class Codes: G02C 7/104 having spectral characteristics for purposes other than sun-protection

Abstract

According to embodiments of the present invention, an ocular lens is provided. The ocular lens includes an optical filter configured to change a chromaticity of light impinging on the ocular lens so as to transmit a filtered light to an eye of a viewer, wherein the filtered light comprises a first light having a first peak wavelength in a range of between about 460 nm and about 490 nm and a second peak wavelength in a range of between about 490 nm and about 550 nm.

Claims

1. An ocular lens comprising an optical filter configured to change a chromaticity of light impinging on the ocular lens so as to transmit a filtered light to an eye of a viewer, the filtered light having a proportion of blue light that is higher than a proportion of red light, wherein

the filtered light has a proportion of green light,

the blue light has a peak wavelength at about 480 nm within a range of blue wavelengths from about 460 nm to about 500 nm and the green light has a peak wavelength at about 550 nm within a range of green wavelengths from about 530 nm to about 570 nm, and

the proportion of blue light is between about 80% and about 90%, the proportion of green light is between about 10% and about 20%, and the proportion of red light is less than about 1%.

2. The ocular lens as claimed in claim 1, wherein the ocular lens is a spectacle lens or a contact lens.