Holding jig, optical element coating method, and optical lens manufacturing method
AssigneeHoya Lens Thailand Ltd.
InventorSatoshi Annaka
Life of this patent
Estimating the term…
Abstract
A holding jig which is capable of holding any of optical elements of various shapes or sizes, and free of causing deformation or damage of the optical elements. A holding jig for holding an optical element includes: a base; first, second and third holding parts which hold the periphery of a lens substrate; a first arm to which the first holding part is attached and which is provided to the base swingably about a pivot; a torsion spring biasing the first arm in a first swinging direction such that the first holding part is urged toward the lens substrate; and an arm locking mechanism configured to lock the swinging of the first arm.
Claims11
A holding jig for holding an optical element, comprising:
- a base;
- at least three holding parts which hold a periphery of the optical element;
- a first arm to which a first holding part among the at least three holding parts is attached and which is provided to the base swingably about a pivot;
- a biasing member biasing the first arm in a first swinging direction such that the first holding part is urged toward the optical element;
- and
- a locking mechanism configured to lock the swinging of the first arm and substantially eliminate a biasing force of the biasing member,
- wherein each of a first holding part and a second holding part among the at least three holding parts holds the optical element at a position where a distance from a center of gravity of the optical element in a height direction is equal to or less than 0.3 times a diameter of the optical element or a length of a major axis when the optical element has an elliptical shape, and a third holding part holds the optical element at a position where a distance from a center of gravity of the optical element in a horizontal direction is equal to or less than 0.15 times the diameter or the length of the major axis of the optical element in the horizontal direction.
A holding jig for holding an optical element, comprising:
- at least three holding parts each of which holds a periphery of a circular or elliptical optical element;
- a biasing member biasing a first holding part among the at least three holding parts toward an edge of the optical element being held;
- and
- a locking mechanism configured to lock the first holding part at a position where the first holding part is in contact with the edge of the optical element being held, and substantially eliminate a biasing force of the biasing member,
- wherein each of a first holding part and a second holding part among the at least three holding parts holds the optical element at a position where a distance from a center of gravity of the optical element in a height direction is equal to or less than 0.3 times a diameter of the optical element or a length of a major axis when the optical element has an elliptical shape, and a third holding part holds the optical element at a position where a distance from a center of gravity of the optical element in a horizontal direction is equal to or less than 0.15 times the diameter or the length of the major axis of the optical element in the horizontal direction.
A method of forming a film on a surface of a circular or elliptical optical element, using a holding jig, wherein the holding jig comprises:
- at least three holding parts each of which holds a periphery of the optical element;
- and a biasing member biasing a first holding part among the at least three holding parts toward an edge of the optical element being held, the method comprising the steps of:
- holding the optical element by bringing each of the at least three holding parts into contact with a periphery of the optical element, such that each of a first holding part and a second holding part among the at least three holding parts holds the optical element at a position where a distance from a center of gravity of the optical element in a height direction is equal to or less than 0.3 times a diameter of the optical element or a length of a major axis when the optical element has an elliptical shape, and that a third holding part holds the optical element at a position where a distance from a center of gravity of the optical element in a horizontal direction is equal to or less than 0.15 times the diameter or the length of the major axis of the optical element in the horizontal direction;
- in a state in which the first holding part is in contact with the edge of the optical element, locking the first holding part to substantially eliminate a biasing force of the biasing member;
- immersing, in a coating liquid, the optical element held by the holding jig;
- pulling up the optical element from the coating liquid;
- and
- thermally curing the coating liquid coated on the optical element.
Dependencies are inferred from the claim text.