Optimized designs for embedding webcam modules with superior image quality in electronics displays

• US 8,432,485 B1
• Filed: 12/18/2008
• Issued: 04/30/2013
• Est. Priority Date: 12/19/2007
• Status: Active Grant

• Current Assignee: Logitech Europe S A (Logitech International SA)
• Original Assignee: Logitech Europe S A (Logitech International SA)
• Inventors: Martinez, Mark, Moayer, Ali, Ling, Kenneth, Depallens, Philippe
• Primary Examiner(s): Ho, Tuan
• Assistant Examiner(s): Nazrul, Shahbaz
• Application Number:
  US12/338,602
• Time in Patent Office: 1,594 Days
• Field of Search: 348/207.1, 348/333.1, 348/347, 348/175, 348/156, 348/374, 348/346, 348/375, 348/376, 348/373, 292/138
• US Class Current: 348/373
• CPC Class Codes: G03B 17/04 collapsible, foldable or extensible, e.g. book type
• CPC Class Codes: H04N 23/57 Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices
• CPC Class Codes: Y10T 29/49124 On flat or curved insulated base, e.g., printed circuit, etc.

Abstract

The present invention is an apparatus and method of manufacture for providing image capturing modules which can be embedded into thin displays (e.g., in laptop computers) while providing for improved image quality. In accordance with several embodiments, a webcam module embedded in a display has multiple positions. A first position (or a “rest” or “park” position) is the position of the webcam module when it is not in use. In this first position of the webcam module, it is in its most compact configuration, and lends itself to integration into a very thin display. In other positions, the webcam module has a more expanded configuration, thus leading to better image quality. Such an expanded configuration leads, amongst other things, to a larger depth of focus. In one embodiment, a stepped PCB is used to provide good image quality while maintaining a compact form factor as well as structural rigidity.

Claims

1. An image capturing module embedded in a display, the image capturing module comprising:

a sensor; and

a lens for directing light onto the sensor;

wherein the display is part of a laptop computer;

wherein the lens is movable from a first position to a second position,

wherein the image capturing module provides for a longer optical path between the sensor and the lens when the lens is in the second position than when the lens is in the first position; and

the image capturing module is configured to automatically move the lens to the first position when the laptop computer is closed.

2. The image capturing module of claim 1, wherein the second position is reached by receiving a pressure upon the image capturing module while the lens is in the first position, allowing the lens to pop out.

3. The image capturing module of claim 1, further comprising a lens housing holding the lens, the lens housing being movable relative to the display.

4. The image capturing module of claim 3, further comprising a lighting element embedded in the lens housing and configured to project light when the lens is in the second position.

5. The image capturing module of claim 4, wherein the lighting element is configured to project light in a direction other than along the optical path.

6. The image capturing module of claim 4, wherein the lighting element is configured to illuminate a keyboard of the laptop computer.

7. The image capturing module of claim 3, wherein the lens housing includes a spring-loaded actuator configured to move the lens to the second position.

8. The image capturing module of claim 7, wherein the lens housing is configured such that receiving a pressure upon the image capturing module when the lens is in the first position releases a latch mechanism and allows the lens to move to the second position via urging of the spring-loaded actuator.

9. A method of operating an image capturing module embedded in a display of a laptop computer, the image capturing module including a sensor and a lens for directing light onto the sensor, the method comprising:

moving the lens from a pre-configured first position to a pre-configured second position, wherein the image capturing module provides for a longer optical path between the sensor and the lens when the lens is in the second position than when the lens is in the first position;

capturing image data with the sensor while the lens is in the second position; and

automatically moving the lens to the first position by closing the laptop computer.

10. The method of claim 9, wherein the image capturing module includes a lens housing holding the lens, the lens housing being movable relative to the display.

11. The method of claim 10, wherein the image capturing module includes a lighting element embedded in the lens housing, the method further comprising projecting light from the lighting element when the lens is in the second position.

12. The method of claim 11, wherein the light is projected in a direction other than along the optical path.

13. The method of claim 11, wherein the light is projected so as to illuminate a keyboard of the laptop computer.

14. The method of claim 9, wherein the lens is moved to the second position via a spring-loaded actuator.

15. The method of claim 14, wherein the lens is moved to the second position by applying a pressure upon the image capturing module when the lens is in the first position, thereby releasing a latch mechanism that allows the lens to move to the second position via urging of the spring-loaded actuator.