Interposer for integration of multiple image sensors

Patent metadata

Field	Value
Publication number	US-10451863-B2
Application number	US-201615230115-A
Country	US
Kind code	B2
Filing date	Aug 5, 2016
Priority date	Aug 5, 2016
Publication date	Oct 22, 2019
Grant date	Oct 22, 2019

Abstract

Apparatuses and methods for an interposer for integration of multiple image sensors are disclosed herein. An example apparatus includes an interposer including laterally spaced first and second windows, and first and second image sensors disposed on the interposer over the first and second windows, respectively. The interposer including conductive conduits formed in or on to provide electrically conductive paths there through with the first and second image sensors coupled to the conductive conduits. The first and second image sensors laterally spaced by a gap, and an active area of the first and second image sensors to receive incident light through the respective first and second windows, where a perspective of the first image is different than a perspective of the second image sensor based at least in part on the gap.

First claim

What is claimed is:

1. An apparatus, comprising:
an interposer including first and second windows and conductive conduits formed in or on the interposer, the first and second windows laterally spaced, and the conductive conduits to provide electrically conductive paths through the interposer;
first and second image sensors disposed on the interposer across the first and second windows, respectively, and coupled to the conductive conduits, the first and second image sensors laterally spaced by a gap, wherein active areas of the first and second image sensors are each aligned to receive incident light through the first and second windows, respectively, wherein a perspective of the first image sensor is different than a perspective of the second image sensor based at least in part on the gap; and
first grooves and ridges etched into a first bonding surface of the interposer and sized to mate with second grooves and ridges etched into second bonding surfaces of the first and second image sensors to align the first and second image sensors to the interposer and set the gap between the first and second image sensors on the interposer, wherein at least a portion of the first ridges includes a metal coating for forming mechanical or electrical connections to the first or second image sensors.

2. The apparatus of claim 1 , further comprising first and second lenses disposed at least partially across the first and second windows, respectively, and arranged on an opposite side of the interposer as are the first and second image sensors, such that the interposer is disposed between the first and second image sensors and the first and second lenses.

3. The apparatus of claim 2 , wherein the active areas of the first and second image sensors are positioned to be coincident with a focal plane of respective first and second lenses.

4. The apparatus of claim 2 , wherein the first and second lenses direct incoming light through to the first and second image sensors through the first and second windows, respectively.

5. The apparatus of claim 2 , further comprising:
first and second actuators coupled to the interposer and each including an aperture aligned with a corresponding one of the first and second windows to pass the incident light through to the first and second image sensors, respectively.

6. The apparatus of claim 5 , wherein the first and second lenses are disposed on the first and second actuators, respectively.

7. The apparatus of claim 5 , further comprising:
actuation controllers disposed in or on the interposer and coupled to the first and second actuators to control movement of the first and second actuators in one, two, or three directions.

8. The apparatus of claim 1 , wherein the interposer and the first and second image sensors are formed from the same material.

9. The apparatus of claim 8 , wherein the first and second image are front side illuminated or backside illuminated.

10. The apparatus of claim 1 , wherein at least the interposer and the first and second image sensors form an imaging sensor system, wherein the imaging sensor system is included in an endoscope, and wherein a controller electrically couples to the first and second image sensors by the conductive paths formed through the interposer.

11. The apparatus of claim 1 , further comprising:
metal layers disposed in one or more of the first grooves between adjacent ridges etched into the interposer to form one or more bonding sites for forming electrical or mechanical connections to one or more second ridges of the first and second image sensors.

12. An apparatus, comprising:
an interposer including an actuation controller embedded therein;
first and second image sensors coupled to a surface of the interposer such that the first and second image sensors are physically distinct from the actuation controller embedded in the interposer, the first and second image sensors laterally separated by a gap such that the first image sensor has a different perspective than the second image sensor;
first and second actuators coupled to the interposer, the first and second actuators capable of movement in three directions, wherein the first actuator includes a first aperture and the second actuator includes a second aperture; and
first and second lenses disposed on first and second surfaces of the first and second actuators, respectively, wherein a first optical axis of the first lens is aligned with the first aperture and a second optical axis of the second lens is aligned with the second aperture, wherein the first and second lenses are aligned with the first and second image sensors, respectively, to direct incident light onto active areas of the first and second image sensors through the first and second apertures,
wherein the actuation controller is electrically coupled to the first and second actuators to electrically manipulate the first and second actuators.

13. The apparatus of claim 12 , wherein the image sensors capture respective images for the generation of stereoscopic images.

14. The apparatus of claim 12 , wherein the active areas of the first and second image sensors are incident with a focal plane of the respective first and second lenses.

15. The apparatus of claim 12 , wherein the first and second actuators are coupled to the interposer with self-aligning bonds, and wherein the first and second image sensors are coupled to the interposer with self-aligning bonds.

16. The apparatus of claim 12 , wherein the first and second lenses include one or more lenses, one or more optical filters, one or more polarizers, and combinations thereof.

17. The apparatus of claim 12 , further comprising:
first and second windows disposed in the interposer, the first window aligned with the first image sensor and the first lens and the second window aligned with the second image sensor and the second lens.

18. The apparatus of claim 12 , wherein the actuation controller includes logic that when executed by the actuation controller causes the apparatus to perform operations including:
receiving a first signal from at least one of the first and second image sensors, the signal including instructions for moving at least one of the first and second lenses using at least one of the first and second actuators; and
electrically manipulating at least one of the first and second actuators based on the first signal.

19. The apparatus of claim 18 , wherein the actuation controller includes further logic that when executed by the actuation controller causes the apparatus to perform additional operations including:
receiving a second signal from an external controller; and
electrically manipulating at least one of the first and second actuators based on the second signal.

Assignees

• Verily Life Sciences Llc

Inventors

• Kavusi Sam
• Pepin Brian M

Classifications

• H04N23/54

  Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils · CPC title

• H04N23/55

  Optical parts specially adapted for electronic image sensors; Mounting thereof · CPC title

• H04N23/45

  for generating image signals from two or more image sensors being of different type or operating in different modes, e.g. with a CMOS sensor for moving images in combination with a charge-coupled device [CCD] for still images · CPC title

• H04N23/57

  Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices · CPC title

• H04N13/239

  using two two-dimensional [2D] image sensors having a relative position equal to or related to the interocular distance (H04N13/243 takes precedence) · CPC title