Camera system

Patent metadata

Field	Value
Publication number	US-9602703-B1
Application number	US-201514951711-A
Country	US
Kind code	B1
Filing date	Nov 25, 2015
Priority date	Nov 25, 2015
Publication date	Mar 21, 2017
Grant date	Mar 21, 2017

Abstract

A camera system includes a body defining a cavity and a camera attached to the body within the cavity and including a lens and a ring surrounding the lens. The camera system includes a wiper assembly attached to the camera and configured for clearing debris from the lens. The wiper assembly includes a wiper configured for contacting and wiping the lens and having a first end and a second end spaced apart from the first end. The wiper is rotatable about a pivot axis between a stowed position in which the wiper contacts the ring and a deployed position in which the wiper contacts the lens. The wiper assembly also includes a counterweight attached to the second end and configured for disposing the wiper in the deployed position, and a resilient member disposed adjacent the ring and configured for disposing the wiper in the stowed position.

First claim

The invention claimed is:

1. A camera system comprising:
a body defining a cavity;
a camera attached to the body within the cavity and including:
a lens; and
a ring surrounding the lens; and

a wiper assembly attached to the camera and configured for clearing debris from the lens, wherein the wiper assembly includes:
a wiper configured for contacting and wiping the lens and having a first end and a second end spaced apart from the first end;
wherein the wiper is rotatable about a pivot axis between a stowed position in which the wiper contacts the ring and a deployed position in which the wiper contacts the lens;
a counterweight attached to the second end and configured for disposing the wiper in the deployed position; and
a resilient member attached to the ring and configured for disposing the wiper in the stowed position.

2. The camera system of claim 1 , wherein the pivot axis is perpendicular to the ring.

3. The camera system of claim 2 , wherein the resilient member is rotatable about the pivot axis.

4. The camera system of claim 1 , wherein the counterweight has a weight and the resilient member has a spring force, and further wherein the spring force is equal to the weight when the camera is stationary and the wiper is disposed in the stowed position.

5. The camera system of claim 4 , wherein the weight is greater than the spring force when the wiper rotates from the stowed position to the deployed position.

6. The camera system of claim 1 , wherein the wiper has a curvilinear shape that conforms to the lens when the wiper is disposed in the deployed position.

7. The camera system of claim 1 , wherein the wiper assembly includes exactly one wiper.

8. A camera system comprising:
a body defining a cavity;
a camera attached to the body within the cavity and including:
a lens; and
a ring surrounding the lens; and

a wiper assembly attached to the camera and configured for clearing debris from the lens, wherein the wiper assembly includes:
a wiper configured for contacting and wiping the lens and having a first end and a second end spaced apart from the first end;
wherein the wiper is rotatable about a pivot axis between a stowed position in which the wiper contacts the ring and a deployed position in which the wiper contacts the lens;
a counterweight attached to the second end and configured for disposing the wiper in the deployed position, wherein the counterweight covers and is spaced apart from the ring to define a channel therebetween;
wherein the counterweight is rotatable with respect to the ring about an axis of rotation between a first position and a second position, and has a mass that is eccentrically distributed about the axis of rotation; and
a resilient member configured for rotating the counterweight from the second position to the first position, wherein the resilient member is attached to the ring and the counterweight;
wherein the wiper is rotatable about a pivot axis between:
a stowed position in which the first end is disposed within the channel such that the wiper contacts the ring when the counterweight is disposed in the first position; and
a deployed position in which the first end is not disposed within the channel such that the wiper contacts the lens when the counterweight is disposed in the second position.

9. The camera system of claim 8 , wherein the counterweight defines a slot therein having a curvilinear shape.

10. The camera system of claim 9 , wherein the wiper includes a pin extending from the first end and disposed within the slot.

11. The camera system of claim 10 , wherein the pin is translatable within the slot as the wiper rotates between the stowed position and the deployed position.

12. The camera system of claim 8 , wherein the resilient member is disposed within the channel.

13. A camera system comprising:
a body defining a cavity;
a camera attached to the body within the cavity and including:
a lens; and
a ring surrounding the lens; and

a wiper assembly attached to the camera and configured for clearing debris from the lens, wherein the wiper assembly includes:
a plurality of wipers each configured for contacting and wiping the lens and each having a first end and a second end spaced apart from the first end;
wherein each of the plurality of wipers is rotatable about a respective one of a plurality of pivot axes between a stowed position in which the wiper contacts the ring and a deployed position in which the wiper contacts the lens;
a counterweight attached to the plurality of wipers and configured for disposing the plurality of wipers in the deployed position, wherein the counterweight covers and is spaced apart from the ring to define a channel therebetween;
wherein the counterweight is rotatable with respect to the ring about an axis of rotation between a first position in which each of the plurality of wipers is disposed in the stowed position and a second position in which each of the plurality of wipers is disposed in the deployed position;
wherein the counterweight has a mass that is eccentrically distributed about the axis of rotation; and
a resilient member configured for rotating the counterweight from the second position to the first position, wherein the resilient member is disposed within the channel and attached to the ring and the counterweight.

14. The camera system of claim 13 , wherein the first end of each of the plurality of wipers travels towards the first end of another one of the plurality of wipers as the counterweight rotates from the first position to the second position.

15. The camera system of claim 13 , wherein each of the plurality of wipers includes an arm and a flange extending from the arm.

16. The camera system of claim 15 , wherein the flange abuts the counterweight and the arm is disposed within the channel when the counterweight is disposed in the first position.

17. The camera system of claim 15 , wherein the flange contacts the lens when the counterweight is disposed in the second position.

18. The camera system of claim 13 , wherein each of the plurality of pivot axes is spaced apart from and parallel to one another along the ring and is a vertex of an equilateral triangle.

19. The camera system of claim 13 , wherein the wiper assembly includes exactly three wipers each having a curvilinear shape.

Assignees

• Gm Global Tech Operations Llc

Inventors

• Raphael Eric L

Classifications

• H04N23/50

  Constructional details · CPC title

• B60S1/566 Primary

  including wiping devices (B60S1/563, B60S1/583 take precedence) · CPC title

• H04N23/51 Primary

  Housings · CPC title

• G02B27/0006

  with means to keep optical surfaces clean, e.g. by preventing or removing dirt, stains, contamination, condensation (G02B1/18 takes precedence; cleaning in general B08B) · CPC title

• B60R1/00

  Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles · CPC title