Lens device
First Claim
Patent Images
1. A lens device comprising:
- a plastic lens having a circular outer periphery; and
a plastic lens-barrel for holding the lens, having an octagonal or more complex polygonal inner surface,wherein the lens is held by the lens-barrel in press contact with the inner surface of the lens-barrel.
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Accused Products
Abstract
In a lens device, plastic lenses having circular outer periphery are placed in a plastic lens-barrel having an octagonal or more complex polygonal inner surface in such a way that the outer peripheral surfaces of the lenses are press contacted to the inner surface of the polygonal shape. This lens device has press contact portions that are pressed by the lens outer peripheral surface and the lens-barrel inner surface in the vicinity and in both sides of gate traces where optical axis displacement is large so as to suppress the displacement of the gate trace by the press contact portions.
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Citations
17 Claims
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1. A lens device comprising:
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a plastic lens having a circular outer periphery; and a plastic lens-barrel for holding the lens, having an octagonal or more complex polygonal inner surface, wherein the lens is held by the lens-barrel in press contact with the inner surface of the lens-barrel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A lens device comprising:
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a plurality of plastic lenses, each having a circular outer periphery; and a plastic lens-barrel for holding the lenses, wherein the plurality of lenses are coaxially held by the lens-barrel in press contact with an inner surface of the lens-barrel in a pressure contact portion so that gate traces made by injection molding are in the same direction. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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Specification