System and method for measuring tilt of a sensor die with respect to the optical axis of a lens in a camera module
AssigneeESS Technology, Inc.
InventorsCarmel Ish-Shalom, Pimai Seelao
Life of this patent
Estimating the term…
Abstract
A system and method are provided for measuring tilt of a sensor die with respect to the optical axis of the lens assembly in a camera module by providing a camera module having a sensor die with a plurality of focal indicial located on a surface, and a lens or lens assembly adjustably held about the sensor die and having an optical axis; exposing the lens to light; measuring the focus of each focal indicia with respect to the position of the lens; and calculating the tilt of the sensor die with respect to the optical axis of the lens.
Claims17
A method for measuring tilt of a sensor die with respect to the optical axis of the lens assembly in a camera module, comprising:
- providing a camera module having a sensor die with a plurality of focal indicial located on a surface, and a lens or lens assembly adjustably held about the sensor die and having an optical axis;
- exposing the lens to light;
- and
- measuring the focus of each focal indicia with respect to the position of the lens;
- and
- calculating the tilt of the sensor die with respect to the optical axis of the lens.
A system for measuring tilt of a sensor die with respect to the optical axis of a lens assembly in a camera module having a sensor die with a plurality focal indicia located on a surface and a lens adjustably held about the sensor die and having a focal axis;
- a light source configured to expose the lens to light;
- and
- a measuring device configured to measure the focus of each focal indicia with respect to the position of the lens;
- and
- an arithmetic device configured to calculate the tilt of the sensor die with respect to the optical axis of the lens.
Dependencies are inferred from the claim text.