Optical module
First Claim
1. An optical module comprising:
- a circuit board that includes an imaging element;
a lens barrel that is fixed onto the circuit board to movably accommodate a lens holder having a lens that forms an image on an imaging surface of an imaging element in a light axis direction;
a cylindrical cam having a cam surface engaged with a protrusion disposed in the outside of the lens barrel and extending from a side face of the lens holder to move the lens holder;
a drive section in which an actuator drives the cylindrical cam via a gear train; and
a cover that integrally covers the lens barrel and the actuator and determines the positional relationship between the lens barrel and the drive section.
1 Assignment
0 Petitions
Accused Products
Abstract
There is provided an optical module having a circuit board that includes an imaging element, a lens barrel that is fixed onto the circuit board to movably accommodate a lens holder having a lens that forms an image on an imaging surface of an imaging element in a light axis direction, a cylindrical cam having a cam surface engaged with a protrusion disposed in the outside of the lens barrel and extending from a side face of the lens holder to move the lens holder, and a drive section in which an actuator drives the cylindrical cam via a gear train and also having a cover that integrally covers the lens barrel and the actuator and determines the positional relationship between the lens barrel and the drive section.
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Citations
5 Claims
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1. An optical module comprising:
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a circuit board that includes an imaging element;
a lens barrel that is fixed onto the circuit board to movably accommodate a lens holder having a lens that forms an image on an imaging surface of an imaging element in a light axis direction;
a cylindrical cam having a cam surface engaged with a protrusion disposed in the outside of the lens barrel and extending from a side face of the lens holder to move the lens holder;
a drive section in which an actuator drives the cylindrical cam via a gear train; and
a cover that integrally covers the lens barrel and the actuator and determines the positional relationship between the lens barrel and the drive section. - View Dependent Claims (2, 3)
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4. A portable electronic device comprising an optical module that includes:
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a circuit board that includes an imaging element;
a lens barrel that is fixed onto the circuit board to movably accommodate a lens holder having a lens that forms an image on an imaging surface of an imaging element in a light axis direction;
a cylindrical cam having a cam surface engaged with a protrusion disposed in the outside of the lens barrel and extending from a side face of the lens holder to move the lens holder;
a drive section in which an actuator drives the cylindrical cam via a gear train; and
a cover that integrally covers the lens barrel and the actuator and determines the positional relationship between the lens barrel and the drive section.
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5. An assembling method of an optical module comprising the steps of:
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assembling an imaging forming section that includes a circuit board having an imaging element, a lens barrel that is fixed onto the circuit board to movably accommodate a lens holder having a lens that forms an image on an imaging surface of the imaging element in a light axis direction, and a cylindrical cam having a cam surface engaged with a protrusion disposed in the outside of the lens barrel and extending from a side face of the lens holder to move the lens holder;
assembling a drive section that includes a cover having a through-hole that penetrates the lens barrel, an actuator that is set on the cover, and a gear train that is disposed on the cover to transmit a driving force of the actuator; and
inserting the lens barrel in the through-hole, engaging the cylindrical cam and the gear train, and combining the imaging forming section and the drive section.
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Specification