Optical lens, assembling method thereof, and lens barrel
An optical lens including a lens barrel, a fixing ring, and at least one lens element is provided. A bonding surface is provided on an inner side of a periphery of an end of the lens barrel, and a plurality of micro-structures are disposed on the bonding surface in a ring-shaped arrangement. The micro-structures protrude from the bonding surface. The fixing ring is disposed inside the bonding surface of the lens barrel. The lens element is disposed inside the lens barrel. The micro-structures on the bonding surface and the fixing ring are dissolved by a solvent, so as to fix the lens element inside the lens barrel. An assembling method of the optical lens and a lens barrel are also provided.
1. An optical lens, comprising:
a lens barrel, wherein a bonding surface is provided on an inner side of a periphery of an end of the lens barrel, a plurality of micro-structures are disposed on the bonding surface in a ring-shaped arrangement, and the micro-structures protrude from the bonding surface;
a fixing ring, disposed inside the bonding surface of the lens barrel; and
at least one lens element, disposed inside the lens barrel,
wherein the micro-structures on the bonding surface and the fixing ring are dissolved by a solvent, so as to fix the lens element inside the lens barrel.
2. The optical lens as claimed in claim 1 , wherein a cross-section of each of the micro-structures on a plane perpendicular to an optical axis of the lens barrel is in a triangular shape.
3. The optical lens as claimed in claim 2 , wherein each of the micro-structures has a width, and the width is less than 5 micrometers.
4. The optical lens as claimed in claim 2 , wherein each of the micro-structures has a height, and the height is less than 1 micrometer.
5. The optical lens as claimed in claim 1 , wherein a cross-section of each of the micro-structures on a plane perpendicular to an optical axis of the lens barrel is in a trapezoidal shape.
6. The optical lens as claimed in claim 5 , wherein each of the micro-structures has a width, and the width is less than 5 micrometers.
7. The optical lens as claimed in claim 5 , wherein each of the micro-structures has a height, and the height is less than 1 micrometer.
8. A lens barrel, configured to contain a lens element, comprising a bonding surface on an inner side of a periphery of an end of the lens barrel, wherein a plurality of micro-structures are disposed on the bonding surface in a ring-shaped arrangement, and the micro-structures protrude from the bonding surface, wherein the micro-structures on the bonding surface and a fixing ring are dissolved by a solvent, so as to fix the lens element inside the lens barrel.
9. The lens barrel as claimed in claim 8 , wherein a cross-section of each of the micro-structures on a plane perpendicular to an optical axis of the lens barrel is in a triangular shape.
10. The lens barrel as claimed in claim 9 , wherein each of the micro-structures has a width, and the width is less than 5 micrometers.
11. The lens barrel as claimed in claim 9 , wherein each of the micro-structures has a height, and the height is less than 1 micrometer.
12. The lens barrel as claimed in claim 8 , wherein a cross-section of each of the micro-structures on a plane perpendicular to an optical axis of the lens barrel is in a trapezoidal shape.
13. The lens barrel as claimed in claim 12 , wherein each of the micro-structures has a width, and the width is less than 5 micrometers.
14. The lens barrel as claimed in claim 12 , wherein each of the micro-structures has a height, and the height is less than 1 micrometer.
15. An assembling method of an optical lens, comprising:
providing a lens barrel, wherein a bonding surface is provided on an inner side of a periphery of an end of the lens barrel, a plurality of micro-structures are disposed on the bonding surface in a ring-shaped arrangement, the micro-structures protrude from the bonding surface, and at least one lens element is disposed inside the lens barrel;
disposing a fixing ring inside the bonding surface of the lens barrel; and
dissolving the micro-structures on the bonding surface and the fixing ring by a solvent, so as to fix the lens element inside the lens barrel.
16. The assembling method of the optical lens as claimed in claim 15 , wherein a cross-section of each of the micro-structures on a plane perpendicular to an optical axis of the lens barrel is in a triangular shape.
17. The assembling method of the optical lens as claimed in claim 15 , wherein a cross-section of each of the micro-structures on a plane perpendicular to an optical axis of the lens barrel is in a trapezoidal shape.