Method and structure for alignment of lens to optical product at pcba level
AssigneePixart Imaging Inc.
InventorsWan Piang LIM, Sai Mun LEE
Life of this patent
Estimating the term…
Abstract
An optical package includes: a Printed Circuit Board (PCB) including a plurality of cut-out sections; a lens, including a first plurality of protrusions corresponding respectively to the plurality of cut-out sections, wherein the first plurality of protrusions includes three protrusions being guide posts, a first protrusion of the first plurality of protrusions is formed on a first side of the lens, and a second protrusion of the first plurality of protrusions is formed on a second side of the lens opposite to the first side, and when the lens is placed under the PCB, the first plurality of protrusions will pass through the cut-out sections; and a sensor for attaching on to the lens and the PCB.
Claims17
An optical package, comprising:
- a Printed Circuit Board (PCB) comprising a plurality of cut-out sections;
- a lens, comprising a first plurality of protrusions corresponding respectively to the plurality of cut-out sections, wherein the first plurality of protrusions comprises three protrusions being guide posts, a first protrusion of the first plurality of protrusions is formed on a first side of the lens, and a second protrusion of the first plurality of protrusions is formed on a second side of the lens opposite to the first side, and when the lens is placed under the PCB, the first plurality of protrusions will pass through the cut-out sections;
- and
- a sensor for attaching on to the lens and the PCB.
A method for designing an optical package, comprising:
- forming a lens comprising a first plurality of protrusions, wherein the first plurality of protrusions comprises three protrusions being guide posts, a first protrusion of the first plurality of protrusions is formed on a first side of the lens, and a second protrusion of the first plurality of protrusions is formed on a second side of the lens opposite to the first side;
- forming a Printed Circuit Board (PCB) comprising a plurality of cut-out sections corresponding respectively to the first plurality of protrusions;
- placing the lens under the PCB so that the first plurality of protrusions pass through the plurality of cut-out sections;
- and
- attaching a sensor on to the lens and the PCB.
An optical package, comprising:
- a Printed Circuit Board (PCB) comprising a plurality of cut-out sections;
- a lens, comprising a first plurality of protrusions corresponding respectively to the plurality of cut-out sections, wherein the first plurality of protrusions comprises three protrusions being snap features, a first protrusion of the first plurality of protrusions is formed on a first side of the lens, and a second protrusion of the first plurality of protrusions is formed on a second side of the lens opposite to the first side, and when the lens is placed under the PCB, the first plurality of protrusions will pass through the cut-out sections;
- and
- a sensor for attaching on to the lens and the PCB;
- wherein the snap features comprise outward-facing protrusions which attach to the top of the PCB.
Dependencies are inferred from the claim text.