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US 7,903,503 B2Granted
Dual illumination watch face, and associated methods
OwnerJames Brewster Olmesinventor
Life of this patent
Estimating the term…
Abstract
Systems and methods for a dual illumination watch face having a tritium gas tube coupled with a dial, minute hand or hour hand of the watch face, and phosphorescent material disposed with at least one of the dial, minute hand and hour hand.
Claims19
A dual illumination watch face, comprising:
- a first tritium gas tube coupled with at least one of a dial, minute hand and hour hand of the watch face;
- and
- a first phosphorescent material disposed with at least one of the dial, minute hand and hour hand,
- wherein a visible area of the first phosphorescent material and a visible area of the first tritium gas tube are selected such that the intensity of light output by the visible areas of the first phosphorescent material and tritium gas tube of the watch face continuously exceeds particular levels of a sensitivity threshold over time of a human eye when transitioning from a light environment to a dark environment.
1 more element
A dual illumination watch face, comprising:
- a tritium gas tube coupled with a dial, minute hand or hour hand of the watch face;
- and
- phosphorescent material disposed with an exterior surface of the tritium gas tube;
- wherein light emitted by the tritium gas tube is visible through one or more windows formed by the phosphorescent material, and is not transmitted in directions of areas of the exterior surface blocked by disposed phosphorescent material.
1 more element
A method for manufacturing a dial for a dual illumination watch face, comprising:
- forming a dial with one or more cutouts for tritium gas tubes, the width of each cutout smaller than a maximum width of the associated tritium gas tube;
- applying one or both of a color and a texture to the dial;
- applying a phosphorescent material to the dial;
- inserting the associated tritium gas tube into the front of each cutout;
- and
- affixing the tritium gas tube in place from the rear of the cutout.
3 more elements
Dependencies are inferred from the claim text.