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US 2004/0169819 A1Published application
Human eye glare tester
OwnerTakuro Tsukataniinventor
Life of this patent
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Abstract
An apparatus and method for testing a human eye's sensitivity to glare under various conditions where light intensity is varied and passes through a given translucent filter to create a glared condition. The human eye is then provided a filter such as a pair of sunglasses that with the proper level of filter may assist a human subject in eliminating the glared condition.
Claims15
An apparatus for measuring the human eye's sensitivity to glare comprising:
- a. A housing, said housing further comprising an open end and a closed end;
- b. A holder;
- c. At least one translucent filter;
- d. A source of light, said source of light coupled to the closed end within said housing such that said light source emits light in the direction of the open end of said housing;
- e. Said translucent filter being secured within said holder such that when said holder is coupled to said open end of said housing, the translucent filter is positioned so that the light emitted from said light source passes in the direction normal to the translucent filter thereby creating a glared condition on the translucent filter.
2 more elements
A method of testing a human eye's sensitivity to glare comprising the steps of:
- a. Shaping a piece of translucent material;
- b. Securing a light source in a housing having an open end and a closed end;
- c. Positioning said translucent material in front of said light source at the open end of said housing;
- d. Turning on said light source such that light is emitted from said light source and passes through said translucent material such that a glared condition is created at said translucent material;
- e. positioning a semi-translucent filter between the translucent filter and a human eye that eliminates the glared condition as it appears to said human eye.
2 more elements
Dependencies are inferred from the claim text.