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US 6,324,342 B1Granted
Data-projection device for disposable cameras
AssigneeSeiko Epson Corporation
InventorsShinsuke Ito, Masaaki Handa
Life of this patent
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AssigneeSeiko Epson Corporation
InventorsShinsuke Ito, Masaaki Handa
Estimating the term…
A data-projection device particularly suited for disposable cameras that offers high reliability without the need for a dedicated monitoring device affixed thereto. A dedicated battery is embedded in this data-projection device and an associated battery terminal extends over the entire surface of the data-projection device. One of the circuit board surfaces securing the electrical components of the data-projection device is covered with an anti-electrostatic copper foil pattern which is connected to the battery, thus providing a shield effect with the battery terminal and the copper foil pattern strobe. Further, preferably, the strobe unit and the data-projection device are separated from each other by at least 2 mm. To reduce noise effects from introducing data display errors in the liquid crystal display spring area provided in the battery terminal and is fastened as the receiving area for the guide frame of the main body of the disposable camera to absorb impacts and a dedicated backup capacitor is installed to provide backup in the event the battery contacts are separated from the battery when the data-projection device or the camera it is attached to is jarred or dropped.
A data imprinting device without a monitor display, comprising a liquid crystal display arranged in an optical path extending from an ambient light intake to a photographic film, a liquid crystal display drive unit for causing a data pattern that will be imprinted onto the photographic film, said liquid crystal display drive unit being formed as a light transmitting part in said liquid crystal display and a shutter unit which opens and closes the optical path in conjunction with a photo-shooting shutter, wherein said data imprinting device imprints a data image corresponding to the data pattern by using ambient light that is taken in at said ambient light intake, and a built-in battery which is included for the data imprinting device use only.
A lens assembly including a data imprinting device without a monitor display, comprising a liquid crystal display arranged in an optical path extending from an ambient light intake to a photographic film, a liquid crystal display drive unit for causing a data pattern that will be imprinted onto the photographic film, said liquid crystal display drive unit being formed as a light transmitting part in said liquid crystal display and a shutter unit which opens and closes the optical path in conjunction with a photo-shooting shutter, wherein said data imprinting device imprints a data image corresponding to the data pattern by using ambient light that is taken in at said ambient light intake, and a built-in battery which is included for the data imprinting device use only.
Dependencies are inferred from the claim text.