Lens for vision enhancement
AssigneeStryker Corporation
InventorsCharles N. Wang, Erhan H. Gunday, Albert M. Jurgens, Eric C. Miller
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Abstract
A lens transmits a maximum 2 percent average intensity of ultraviolet light and transmits a minimum 95 percent average intensity of light in a brightness perception spectrum of the eye. In addition, maximum percentages of violet and/or blue light are transmitted. In some cases, the lens transmits a maximum percentage average intensity of red light while transmitting the minimum 95 percent average intensity of light in the brightness perception spectrum. The lens is incorporated in protective eyewear, especially into eyewear used by medical personnel.
Claims39
A lens, wherein the lens transmits a maximum of 2 percent of an average light intensity in a range of about 400-280 nanometers, the lens transmits a minimum of 95 percent of an average light intensity in a range of light wavelengths associated with eye brightness perceptions and the lens transmits a maximum of 60 percent of an average light intensity in a range of wavelengths associated with red light.
A lens comprising a tint within a ΔE of 3 compared against (L*=98.16, a*=−8.85, b*=22.91) expressed in the CIELAB system wherein the lens transmits a maximum of 2 percent of an average light intensity in a range of about 400-280 nanometers, and wherein the lens transmits a minimum of 95 percent of an average light intensity in a range of light wavelengths associated with eye brightness perception.
A lens comprising a tint within a ΔE of 3 compared against (L*=97.16, a*=−13.7, b*=28.00) expressed in the CIELAB system wherein the lens transmits a maximum of 2 percent of an average light intensity in a range of about 400-280 nanometers, and wherein the lens transmits a minimum of 95 percent of an average light intensity in a range of light wavelengths associated with eye brightness perception.
A lens comprising a tint:
- wherein a normalized spectral radiance distribution of a light source is combined with a normalized eye response function of an eye to yield a first derived eye response function having a first peak value at a first wavelength;
- wherein the first derived eye response function is combined with a normalized spectral transmittance distribution of the tint to yield a second derived eye response function having a second peak value at a second wavelength;
- and
- wherein the second peak value is within a specified percent of the first peak value, and the second wavelength is within a specified wavelength of the first wavelength.
A lens, wherein the lens transmits a maximum of 60 percent of an average light intensity in a range of about 700-630 nanometers, and wherein the lens transmits a minimum of 95 percent of an average light intensity in a range of light wavelengths associated with eye brightness perception.
A vision enhancement method comprising the at of providing a lens to be placed between and eye and a viewed object, wherein the lens transmits a maximum of 2 percent of an average light intensity in a range of about 400-280 nanometers, the lens transmits a minimum of 90 percent of an average light intensity in a range of light wavelengths associated with eye brightness perception, and the lens transmits a maximum of 60 percent of an average light intensity in a range of wavelengths associated with red light.
A vision enhancement method comprising the act of providing a lens to be placed between an eye and a viewed object, wherein the lens transmits a maximum of 60 percent of an average light intensity in a range of about 700-630 nanometers, and wherein the lens transmits a minimum of 95 percent of an average light intensity in a range of light wavelengths associated with eye brightness perception.
An optical filter, wherein the filter transmits at most an average of 2 percent over a range of about 280-400 nanometer light, transmits at least an average of 95 percent of light over a range of about 500-630 nanometer light, and transmits at most an average of 60 percent over a range of about 630-700 nanometer light.
An optical filter, wherein the filter transmits a maximum of 60 percent of light in a range of about 700-630 nanometers light, at most 5 percent of light over a range of about 400-280 nanometers light, and a minimum of 90 percent of light over a range of about 630-500 nanometers light.
The optical filter of claim wherein the filter transmits at most an average of 35 percent over a range of 400-460 nanometer light.
Dependencies are inferred from the claim text.