| 摘要 |
An integrated image sensor and a camera lens apparatus comprising of an image sensor substrate, a camera lens mount, a lens barrel, a lens optical assembly and a collet. The camera lens mount comprises a first material, the lens barrel comprises a second material and the collet comprises a third material, the first, second and third materials change in length with a temperature change according to their respective coefficient of thermal expansion. The lens optical assembly comprises optical elements that cause a change in focal length with a temperature change according to a thermal optical coefficient. The first, second, and third material, the lengths of the camera lens mount, lens barrel, and collet, and the thermal optical coefficient of the lens optical assembly are such that the image plane is approximately stationary relative to the sensor surface in response to the temperature change. |
| 主权项 |
1. An integrated image sensor and a camera lens apparatus comprising:
an image sensor substrate comprising an image sensor on an image plane; a camera lens mount comprising a first material that expands in length with an increase in temperature according to a first positive coefficient of thermal expansion, the camera lens mount comprising:
a base portion including a lower surface adjacent to the image sensor substrate; anda tube portion extending from the base portion in a direction of an optical axis substantially perpendicular to the image plane, the tube portion having a channel; a lens barrel having a first portion extending into the channel of the tube portion, and a second portion outside the channel of the tube portion, the lens barrel comprising a second material that expands in length with the increase in temperature according to a second positive coefficient of thermal expansion; a lens optical assembly secured by the lens barrel, the lens optical assembly comprising optical characteristics that cause a negative change in focal length with the increase in temperature according to a negative thermal optical coefficient; a collet connecting the interior surface of the camera lens mount and an exterior surface of the lens barrel, wherein the interior surface of the lens mount, the collet and the exterior surface of the lower portion of the lens barrel are each longitudinally oriented in a direction substantially parallel to the optical axis, the collet to couple the lens barrel to the camera lens mount, the collet comprising a third material that expands in length with the increase in temperature according to a third positive coefficient of thermal expansion; wherein the first material, second material, third material, lengths of the camera lens mount, lens barrel, and collet, and the thermal optical coefficient of the lens optical assembly are such that the focal plane is maintained in approximate alignment with the image plane in response to the increase in temperature. |
