Methods and apparatus relating to a camera including multiple optical chains

• US 9,749,511 B2
• Filed: 03/30/2016
• Issued: 08/29/2017
• Est. Priority Date: 10/18/2013
• Status: Active Grant

• Current Assignee: Blue River Technology Inc. (Deere & Company)
• Original Assignee: Light Labs Inc.
• Inventors: Laroia, Rajiv
• Primary Examiner(s): Haskins, Twyler
• Assistant Examiner(s): Garces-Rivera, Angel L
• Application Number:
  US15/085,961
• Publication Number:
  US 20160286105A1
• Time in Patent Office: 517 Days
• Field of Search: None
• CPC Class Codes: G02B 13/0065 having a beam-folding prism or mirror
• CPC Class Codes: G02B 17/008 Systems specially adapted to form image relays or chained systems
• CPC Class Codes: G02B 17/08 Catadioptric systems used in non-imaging applications G02B19/00
• CPC Class Codes: G02B 5/04 Prisms
• CPC Class Codes: H04N 23/45 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 Class Codes: H04N 23/55 Optical parts specially adapted for electronic image sensors; Mounting thereof
• CPC Class Codes: H04N 23/67 Focus control based on electronic image sensor signals
• CPC Class Codes: H04N 23/6812 based on additional sensors, e.g. acceleration sensors
• CPC Class Codes: H04N 23/687 by shifting the lens or sensor position
• CPC Class Codes: H04N 23/843 Demosaicing, e.g. interpolating colour pixel values
• CPC Class Codes: H04N 23/951 by using two or more images to influence resolution, frame rate or aspect ratio
• CPC Class Codes: H04N 25/134 based on three different wavelength filter elements
• CPC Class Codes: H04N 5/28 Mobile studios

Abstract

Camera methods and apparatus are described where the camera device includes multiple optical chains. In various embodiments two or more of the optical chains include light redirection devices such as mirrors or prisms. Sensors corresponding to multiple different optical chains, but not necessarily all optical chains, are parallel to each other. In some embodiments sensors corresponding to different optical chains are located in the same plane at the front or rear of the camera. However other sensor mounting positions are also possible.

Claims

1. A camera device, comprising:

a plurality of at least three optical chains, each optical chain in said plurality of at least three optical chains including a lens, a plurality of deflection elements, and a sensor, said plurality of deflection elements including at least a first deflection element and a second deflection element, the sensor of each optical chain in said plurality of at least three optical chains being mounted in a sensor plane, the sensor planes of different optical chains in said plurality of at least three optical chains being parallel to one another or the sensor planes of different optical chains in said plurality of at least three optical chains being the same sensor plane, and

wherein light passing through a first optical chain in said plurality of at least three optical chains crosses a light path of another optical chain in said plurality of at least three optical chains when the light passing though the first optical chain travels from the first deflector element to the second deflector element of the first optical chain.

2. The camera device of claim 1, wherein the sensor planes of different optical chains in said plurality of at least three optical chains are the same plane.

3. The camera device of claim 1, wherein the sensors of different optical chains in said plurality of at least three optical chains are mounted on a movable plate.

4. The camera device of claim 3, further comprising:

a two axis positioning module coupled to said movable plate; and

a control module for controlling said two axis positioning module as a function of camera movement.

5. The camera device of claim 4, wherein said control module is an image stabilization module for determining the amount of movement of said movable plate to perform an image stabilization operation to compensate for camera movement.

6. The camera device of claim 1, wherein at least one of the first and second deflection elements of said first optical chain in said plurality of at least three optical chains is a mirror.

7. The camera device of claim 1, wherein at least one of the first and second deflection elements of said first optical chain in said plurality of at least three optical chains is a prism.

8. The camera device of claim 1, wherein light beams passing though at least three different optical chains in said plurality of at least three optical chains cross each other when traveling between the first and second deflector elements of their respective optical chains.

9. The camera device of claim 1, wherein the sensor planes of different optical chains in said plurality of at least three optical chains are parallel to a face of the camera device.

10. A camera device, comprising:

a plurality of optical chains, each optical chain in said plurality of optical chains including a lens, a plurality of deflection elements, and a sensor, said plurality of deflection elements including at least a first deflection element and a second deflection element, the sensor of each optical chain in said plurality of optical chains being mounted in a sensor plane, the sensor planes of different optical chains in said plurality of optical chains being parallel to one another or the sensor planes of different optical chains in said plurality of optical chains being the same sensor plane; and

wherein the light passing through a first optical chain in said plurality of optical chains crosses a light path of another optical chain in said plurality of optical chains when the light passing though the first optical chain travels from the first deflector element to the second deflector element of the first optical chain.

11. The camera device of claim 10, wherein light beams passing though different optical chains cross each other when traveling between the first and second deflector elements of their respective optical chains.

12. The camera device of claim 10 further comprising an additional optical chain which includes an image deflection element configured to change the direction of optical rays passing along an optical axis of the additional optical chain by substantially 90 degrees to direct said optical rays passing along said optical axis onto the sensor of the additional optical chain.

13. A camera apparatus, comprising:

a mounting plate;

a plurality of optical chains, each optical chain in said plurality of optical chains including an aperture in a face of the camera apparatus, a plurality of deflection elements, and a sensor, said plurality of deflection elements including at least a first deflection element and a second deflection element, the sensor of each optical chain in said plurality of optical chains being mounted on said mounting plate, and

wherein light passing through a first optical chain in said plurality of optical chains crosses a light path of another optical chain in said plurality of optical chains when the light passing though the first optical chain travels from the first deflector element to the second deflector element of the first optical chain.

14. The camera apparatus of claim 13, wherein said mounting plate on which the sensors of the different optical chains in said plurality of optical chains are mounted is parallel to the face of said camera.

15. The camera apparatus of claim 14, wherein said mounting plate is a movable plate.

16. The camera apparatus of claim 15, further comprising:

a two axis positioning module coupled to said movable plate; and

a controller for controlling said two axis positioning module as a function of camera apparatus movement.

17. The camera apparatus of claim 13, wherein at least one of the first and second deflection elements of said first optical chain in said plurality optical chains is a mirror.

18. The camera apparatus of claim 13, wherein at least one of the first and second deflection elements of said first optical chain in said plurality of optical chains is a prism.

19. The camera apparatus of claim 13, wherein said plurality of optical chains includes at least four optical chains.