Method, jig, and apparatus for machining rod lenses
AssigneeNippon Sheet Glass Co., Ltd.
InventorsHiroshi Koshi, Kazuto Kase, Tsuyoshi Yamane, Takashi Mori, Kenshu Ando
Life of this patent
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Abstract
A rod lens manufacturing method having satisfactory machining accuracy and enabling mass production. In the method, lens assembly sheets, each holding at least a row of rod lenses, are prepared. The lens assembly sheets are then arranged on holding surfaces defined on a jig. The holding surfaces are inclined relative to a reference surface of the jig by a predetermined angle. Each of the lens assembly sheet is clamped so that optical axes of the rod lenses are inclined relative to a direction perpendicular to the reference surface by that predetermined angle. The lens assembly sheets are then ground and polished.
Claims12
A method for machining rod lenses, the method comprising the steps of:
- preparing a plurality of lens assembly sheets, each holding at least a row of rod lenses;
- arranging the plurality of lens assembly sheets on a plurality of holding surfaces defined on a jig, the plurality of holding surfaces inclined relative to a reference surface of the jig by a predetermined angle;
- clamping each of the lens assembly sheet with a clamp to hold the lens assembly sheet so that optical axes of the rod lenses are inclined relative to a direction perpendicular to the reference surface by the predetermined angle;
- grinding the plurality of lens assembly sheets;
- and
- polishing the plurality of lens assembly sheets.
A method for arranging rod lenses to grind and polish the rod lenses, the method comprising:
- preparing a plurality of lens assembly sheets, each holding at least a row of rod lenses;
- arranging the plurality of lens assembly sheets on a plurality of holding surfaces defined on a jig, the plurality of holding surfaces inclined relative to a reference surface of the jig by a predetermined angle;
- clamping each of the lens assembly sheet with a clamp to hold the lens assembly sheet so that optical axes of the rod lenses are inclined relative to a direction perpendicular to the reference surface by the predetermined angle.
Dependencies are inferred from the claim text.