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US 12,695,271 B2Granted
Light source device and measurement apparatus
AssigneeFUJIFILM Business Innovation Corp.
InventorSeiji Ono
Life of this patent
Estimating the term…
Abstract
A light source device includes: a light-emitting section including plural light-emitting elements; a shifter that performs a shift operation; and a controller that causes the shifter to perform the shift operation to set, among the plural light-emitting elements, a light-emitting element which is to emit light, that changes the shifter to an OFF state after the set light-emitting element is shifted to a state in which the set light-emitting element is able to emit light, and that causes the set light-emitting element to emit light multiple times by turning ON and OFF a voltage application side of a power source, the power source supplying a light-emitting current which causes the light-emitting element to emit light.
Claims18
A light source device comprising:
- a light-emitting section including a plurality of light-emitting elements, wherein each of the plurality of light-emitting elements includes a light-emission control thyristor and a surface emitting element connected in series with the light-emission control thyristor;
- a shifter configured to perform a shift operation, wherein the shifter includes a plurality of shift thyristors and either a plurality of coupling transistors or a plurality of coupling diodes, wherein the plurality of shift thyristors and the plurality of coupling transistors or coupling diodes are respectively connected to each other, and the plurality of light-emitting elements are connected to the shifter;
- and
- a controller configured to cause the shifter to perform the shift operation to set, among the plurality of light-emitting elements, a light-emitting element which is to emit light by controlling a corresponding one of the plurality of shift thyristors to be turned ON, wherein the set light-emitting element is configured to be shifted to a state in which the set light-emitting element is able to emit light when the corresponding one of the plurality of shift thyristors is turned ON,
- wherein the controller is further configured to change the shifter to an OFF state after the set light-emitting element is shifted to a state in which the set light-emitting element is able to emit light, and to cause the set light-emitting element to emit light a plurality of times by turning ON and OFF a voltage application side of a power source, the power source supplying a light-emitting current which causes the light-emitting element to emit light.
2 more elements
A light source device comprising:
- a light-emitting section including a plurality of light-emitting elements, wherein each of the plurality of light-emitting elements includes a light-emission control thyristor and a surface emitting element connected in series with the light-emission control thyristor;
- a shifter including a plurality of shift elements through which an ON state is sequentially transferred in a predetermined order, wherein the plurality of shift elements include a plurality of shift thyristors and either a plurality of coupling transistors or a plurality of coupling diodes, wherein the plurality of shift thyristors and the plurality of coupling transistors or coupling diodes are respectively connected to each other, and the plurality of light-emitting elements are connected to the shifter;
- and
- a controller configured to cause the shifter to set, among the plurality of light-emitting elements, a light-emitting element which is to emit light by controlling a corresponding one of the plurality of shift thyristors to be turned ON, wherein the set light-emitting element is configured to be shifted to a state in which the set light-emitting element is able to emit light when the corresponding one of the plurality of shift thyristors is turned ON,
- wherein the controller is further configured to change the shifter to an OFF state after the set light-emitting element is shifted to a state in which the set light-emitting element is able to emit light and before the ON state is transferred through all of the plurality of shift elements.
2 more elements
A light source device comprising:
- a light-emitting section including a plurality of light-emitting elements, wherein each of the plurality of light-emitting elements includes a light-emission control thyristor and a surface emitting element connected in series with the light-emission control thyristor;
- a shifter configured to perform a shift operation, wherein the shifter includes a plurality of shift thyristors and either a plurality of coupling transistors or a plurality of coupling diodes, wherein the plurality of shift thyristors and the plurality of coupling transistors or coupling diodes are respectively connected to each other, and the plurality of light-emitting elements are connected to the shifter;
- and
- a controller configured to cause the shifter to set, among the plurality of light-emitting elements, a light-emitting element which is to emit light by controlling a corresponding one of the plurality of shift thyristors to be turned ON, wherein the set light-emitting element is configured to be shifted to a state in which the set light-emitting element is able to emit light when the corresponding one of the plurality of shift thyristors is turned ON,
- wherein the controller is further configured to change the shifter to an OFF state after the set light-emitting element is shifted to a state in which the set light-emitting element is able to emit light and before the set light-emitting element stops emitting light.
2 more elements
Dependencies are inferred from the claim text.