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US 5,705,808 AGranted
Flash tube devices with a controllable electrical energy
AssigneesDittler Brothers Incorporated, Simon Marketing, Inc.
InventorAndrew S. Filo
Life of this patent
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Abstract
A flash device has a flash tube which generates light in response to electrical energy. The amount of light emitted by the flash tube is monitored by a circuit which is connected to means for adjusting the electrical energy supplied to said flash tube when a predetermined amount of light has been emitted to thereby increase the effective life span of the flash tube and maintain intensity level of the flash tube within a given tolerance.
Claims3
A flash device comprising:
- a. a source of electrical energy;
- b. a flash tube adapted to emit light repeatedly in response to the electrical energy;
- and
- c. means for adjusting the electrical energy in response to light emission of the flash tube, comprising:
- i. means for determining the number of light emissions of the flash tube;
- and
- ii. means, comprising an electrical circuit, for increasing the electrical energy to the flash tube in response to the number of light emissions determined by the determining means.
4 more elements
A flash device comprising:
- a. a source of electrical energy;
- b. a flash tube emitting light in response to the electrical energy, the electrical energy resulting in current of a first amount flowing to the flash tube;
- and
- c. means, comprising a shunting circuit, for adjusting the electrical energy in response to light emission of the flash tube by diverting away from the flash tube a second amount of current, which second amount of current is only a portion of the first amount of current.
1 more element
Dependencies are inferred from the claim text.