Camera shutter

Patent metadata

Field	Value
Publication number	US-9696607-B2
Application number	US-201514642015-A
Country	US
Kind code	B2
Filing date	Mar 9, 2015
Priority date	Mar 9, 2015
Publication date	Jul 4, 2017
Grant date	Jul 4, 2017

Abstract

An apparatus including a camera shutter having a shutter window therethrough; a shutter drive connected to the camera shutter; and an aperture member having an aperture therethrough. The shutter drive includes at least one magnet and at least one coil. The shutter drive is configured to move the camera shutter when the coil is activated. The shutter window is sized and shaped to be moved into registry with the aperture. The shutter window is substantially at least as large as the aperture.

First claim

What is claimed is:

1. An apparatus comprising:
a camera shutter comprising a shutter window therethrough;
a shutter drive connected to the camera shutter, where the shutter drive comprises at least one magnet and at least one coil, where the shutter drive is configured to move the camera shutter when the coil is activated;
an aperture member comprising an aperture therethrough, where the shutter window is sized and shaped to be moved into registry with the aperture, and where the shutter window is substantially at least as large as the aperture; and
a controller connected to the coil, where the controller is configured to vary voltage supplied to the coil to control the camera shutter at a first location to take a first camera image and at a second location to take a second camera image.

2. An apparatus as in claim 1 where the shutter window has a fixed size and shape.

3. An apparatus as in claim 2 where the shutter window has a general wedge shape.

4. An apparatus as in claim 1 where the apparatus comprises a frame, having the camera shutter with the shutter window at a first end, a pivot mount at a middle section of the frame, and the at least one coil connected to an opposite second end.

5. An apparatus as in claim 4 where the shutter drive comprises permanent magnets connected to a bracket, where the pivot mount at the middle section of the frame is pivotably mounted on the bracket.

6. An apparatus as in claim 1 , where the controller is configured to vary voltage supplied to the coil to control a velocity of the camera shutter.

7. An apparatus as in claim 6 further comprising a velocity sensor connected to the controller, where the velocity sensor is configured to determine the velocity of the camera shutter.

8. An apparatus as in claim 7 where the controller is configured to change the velocity of the camera shutter based, at least partially, upon the velocity of the camera shutter sensed by the velocity sensor.

9. An apparatus as in claim 6 further comprising:
a frame;
a flash connected to the controller;
an image sensor connected to the frame, where the image sensor is located to receive light passing through the aperture and the shutter window;
at least one camera lens connected to the frame; and
at least one memory configured to store an image from the image sensor thereon,
where the controller comprises at least one processor, and software on a first one of the at least one of the memory.

10. A method comprising:
determining velocity of a camera shutter, where the camera shutter comprises a shutter window which is substantially at least as large as a camera aperture;
based upon the determined velocity of the camera shutter, adjusting a shutter drive to change the velocity of the camera shutter;
maintaining the camera shutter at a first location;
controlling voltage to a coil to move the camera shutter from the first location in a first direction to take a first camera image, where the shutter moves to a second location, maintaining the shutter at the second location; and
controlling voltage to the coil to move the shutter from the second location in a second different direction to take a second camera image.

11. A method as in claim 10 where adjusting the shutter drive comprises adjusting voltage supplied to the coil.

12. A method as in claim 10 where adjusting the shutter drive comprises supplying at least a first voltage to the coil to accelerate the velocity of the camera shutter and at least a second opposite voltage to the coil to decelerate the velocity of the camera shutter.

13. A method as in claim 12 where determining the velocity of the camera shutter further comprises supplying at least a third voltage to the coil to maintain a substantially constant velocity of the camera shutter.

14. A method as in claim 10 where determining the velocity of the camera shutter comprises determining a voltage supplied to the coil.

15. A method as in claim 10 further comprising generating a flash, where the velocity of the camera shutter is adjusted such that a substantial entirety of the shutter window is in registry with the camera aperture during substantially an entire duration of the flash.

16. A method as in claim 15 further comprising controlling an exposure duration based, at least partially, upon the determined velocity of the camera shutter.

17. A non-transitory program storage device readable by a machine, tangibly embodying a program of instructions executable by the machine for performing operations, the operations comprising:
determining velocity of a camera shutter; and based upon the determined velocity of the camera shutter;
adjusting a shutter drive to change the velocity of the camera shutter;
maintaining the camera shutter at a first location;
controlling voltage to a coil to move the camera shutter from the first location in a first direction to take a first camera image, where the shutter moves to a second location, maintaining the shutter at the second location; and
controlling voltage to the coil to move the shutter from the second location in a second different direction to take a second camera image.

18. A non-transitory program storage device as in claim 17 where adjusting the shutter drive comprises adjusting voltage supplied to the coil, where adjusting the shutter drive comprises supplying at least a first voltage to the coil to accelerate the velocity of the camera shutter and at least a second opposite voltage to the coil to decelerate the velocity of the camera shutter, and where determining the velocity of the camera shutter further comprises supplying at least a third voltage to the coil to maintain a substantially constant velocity of the camera shutter.

19. A non-transitory program storage device as in claim 17 where determining the velocity of the camera shutter comprises determining a voltage supplied to the coil.

20. A non-transitory program storage device as in claim 17 where the operations further comprise generating a flash, where the velocity of the camera shutter is adjusted such that a substantial entirety of the shutter window is in registry with the camera aperture during substantially an entire duration of the flash, and the operations further comprise controlling an exposure duration based, at least partially, upon the determined velocity of the camera shutter.

Assignees

• Here Global Bv

Inventors

• Prados Michael

Classifications

• H04N23/50

  Constructional details · CPC title

• H04N23/73

  by influencing the exposure time · CPC title

• G03B7/00

  Control of exposure by setting shutters, diaphragms or filters, separately or conjointly (control of exposure in television cameras by means of circuitry influencing the optical part of the camera H04N23/75) · CPC title

• G03B9/60 Primary

  by varying speed of movement of obturating members · CPC title

• H04N5/2353

  Electricity · mapped topic