OPTICAL UNIT, EXPOSURE HEAD, AND IMAGE FORMING APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a technology for easily acquiring excellent optical characteristics by simply and highly precisely positioning a plurality of lenses that function as one optical system.

SOLUTION: The optical unit includes: a first lens array having lenses; a second lens array disposed in the first direction orthogonal to an optical axis direction of the lenses of the first lens array; a third lens array disposed in the optical axis direction of the first lens array; and a fourth array disposed in the optical axis direction of the second lens array. When seen from the optical axis direction, a first gap between the first lens array and the second lens array overlaps a second gap between the third lens array and the fourth lens array.

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