Surface-emission laser array, optical scanning apparatus and image forming apparatus
First Claim
1. A surface-emission laser array comprising a plurality of surface-emission laser diode elements forming a two-dimensional array,wherein there are provided a plurality of columns of said surface-emission laser diode elements including therein at least two surface-emission laser diode elements in a first direction, such that said column of surface-emission laser diode elements is disposed in plural number in a second direction perpendicular to said first direction,said plurality of the surface-emission laser diode elements are disposed with an equal interval in said first direction,said plurality of surface-emission laser diode elements are disposed such that an interval between two adjacent columns of said surface-emission laser diode elements is larger in a central part than in a peripheral part of said two-dimensional array of said surface-emission laser diode elements in said second direction,a number of said columns being larger than a number of said surface-emission laser diode elements included in one column.
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Abstract
A surface-emission laser array comprises a plurality of surface-emission laser diode elements arranged in the form of a two-dimensional array including a plurality of columns of the surface-emission laser diode elements, each column including therein at least two surface-emission laser diode elements in a first direction. The surface-emission laser diode elements in a column are disposed with an equal interval in the first direction. The plural columns arc disposed in a second direction which is perpendicular to the first direction. An interval between two adjacent columns is larger in a central part than in a peripheral part of the two-dimensional array of the surface-emission laser diode elements in the second direction.
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Citations
4 Claims
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1. A surface-emission laser array comprising a plurality of surface-emission laser diode elements forming a two-dimensional array,
wherein there are provided a plurality of columns of said surface-emission laser diode elements including therein at least two surface-emission laser diode elements in a first direction, such that said column of surface-emission laser diode elements is disposed in plural number in a second direction perpendicular to said first direction, said plurality of the surface-emission laser diode elements are disposed with an equal interval in said first direction, said plurality of surface-emission laser diode elements are disposed such that an interval between two adjacent columns of said surface-emission laser diode elements is larger in a central part than in a peripheral part of said two-dimensional array of said surface-emission laser diode elements in said second direction, a number of said columns being larger than a number of said surface-emission laser diode elements included in one column.
Specification