Optical element, head-up display and method for producing optical element
First Claim
1. An optical element comprising:
- a first microlens array unit and a second microlens array unit on which plural microlenses are arranged,wherein the plural microlenses are formed by a lens contour having a polygonal shape in a plan view, andwherein the first and second microlens array units are arranged opposite to each other at a position where a distance between the first and second microlens array units is at least longer than a focal distance of a microlens in the plural microlenses, and are formed so that a direction of vertices of the lens contour of the microlens arranged on the first microlens array unit is different from a direction of vertices of the lens contour of the microlens arranged on the second microlens array unit.
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Accused Products
Abstract
An optical element includes first and second microlens array units on which microlenses are arranged. The microlenses are formed by lens contour having a polygonal shape in a plan view. The first and second microlens array units are arranged opposite to each other at a position where a distance between the first and second microlens array units is at least longer than a focal distance of the microlens, and are formed so that a direction of vertices of the lens contour of the microlens arranged on the first microlens array unit is different from a direction of vertices of the lens contour of the microlens arranged on the second microlens array unit. According to the above optical element, it is possible to appropriately suppress an influence of shift of the position between the first and second microlens array units, and it becomes possible to produce the optical element with ease.
10 Citations
16 Claims
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1. An optical element comprising:
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a first microlens array unit and a second microlens array unit on which plural microlenses are arranged, wherein the plural microlenses are formed by a lens contour having a polygonal shape in a plan view, and wherein the first and second microlens array units are arranged opposite to each other at a position where a distance between the first and second microlens array units is at least longer than a focal distance of a microlens in the plural microlenses, and are formed so that a direction of vertices of the lens contour of the microlens arranged on the first microlens array unit is different from a direction of vertices of the lens contour of the microlens arranged on the second microlens array unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for producing an optical element including a first microlens array unit and a second microlens array unit on which plural microlenses are arranged, comprising:
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a first process which forms the plural microlenses on one side, which are arranged in such a state that a polygonal shape being a lens contour of a microlens in the plural microlenses is rotated by half of a predetermined degrees, so as to produce the first and second microlens array units; and a second process which arranges the first and second microlens array units produced in the first process so that the first and second microlens array units are positioned opposite to each other at a position where a distance between the first and second microlens array units is at least longer than a focal distance of the microlens, so as to produce the optical element.
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13. A method for producing an optical element including a first microlens array unit and a second microlens array unit on which plural microlenses are arranged, comprising:
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a first process which forms the plural microlenses on one side so as to produce the first and second microlens array units; and a second process which arranges the first and second microlens array units opposite to each other at a position where a distance between the first and second microlens array units is at least longer than a focal distance of a microlens in the plural microlenses, and arranges the first and second microlens array units so that an angle difference between a direction of vertices of a polygonal shape being a lens contour of the microlens formed on the first microlens array unit and a direction of vertices of a polygonal shape being a lens contour of the microlens formed on the second microlens array unit becomes a predetermined angle, so as to produce the optical element.
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14. An optical element comprising:
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a first microlens array unit and a second microlens array unit on which plural microlenses are arranged, wherein the plural microlenses are formed by a lens contour having a regular polygonal shape in a plan view, and wherein the first and second microlens array units are arranged opposite to each other at a position where a distance between the first and second microlens array units is at least longer than a focal distance of a microlens in the plural microlenses, and are formed so that an angle difference between a direction of vertices of the lens contour of the microlens arranged on the first microlens array unit and a direction of vertices of the lens contour of the microlens arranged on the second microlens array unit becomes half of an internal angle of the regular polygonal shape.
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15. An optical element comprising:
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a first microlens array unit and a second microlens array unit on which plural microlenses are arranged at equal distances, wherein the microlenses are arranged around one microlens and are adjacently arranged at each predetermined angle with respect to vertices of the one microlens, wherein the first and second microlens array units are arranged opposite to each other at a position where a distance between the first and second microlens array units is at least longer than a focal distance of the microlens, and wherein the microlens arranged on the first microlens array unit and the microlens arranged on the second microlens array unit are shifted by half of the predetermined angle with respect to the one microlens. - View Dependent Claims (16)
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Specification