DEFOGGING AND DEFROSTING DEVICE FOR PROTECTIVE LENS OF A CAMERA

• US 20120170119A1
• Filed: 06/30/2011
• Published: 07/05/2012
• Est. Priority Date: 01/04/2011
• Status: Abandoned Application

• Current Assignee: Topview Optronics Corp.
• Original Assignee: Topview Optronics Corp.
• Inventors: CHU, Yi-Chih, Hung, Ching-Chung
• Application Number:
  US13/174,097
• Publication Number:
  US 20120170119A1
• Time in Patent Office: Days
• US Class Current: 359/512
• CPC Class Codes: G02B 27/0006 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 Class Codes: G03B 11/00 Filters or other obturators specially adapted for photographic purposes
• CPC Class Codes: G03B 17/55 with provision for heating or cooling, e.g. in aircraft

Abstract

The present invention relates to a defogging and defrosting devices for the protective lens of camera, which includes a heater that is coupled to a control circuit panel, a thermal gasket that is in contact contacting with the heater, receives the heat from the heater and transmits the heat to the glass or mirror object which contacts with in order to avoid and prevent the loss of lucidity of the glass or mirror object due to humidity. The defogging and defrosting device is installed on the body of the camera instead of on the protective lens in order to avoid shading the camera view and to facilitate the removal of protective lens while adjusting the focus of the camera. It also facilitates the replacement of the protective lens of the camera.

Claims

1. A defogging and defrosting devices for the protective lens of camera that includes:

A heater that is coupled to a control circuit panel;

A thermal gasket that is in contacting with the heater, receives the heat from the heater and transmits the heat to the glass or mirror object which contacts with in order to avoid and prevent the loss of lucidity of the glass or mirror object due to humidity.

2. A defogging and defrosting devices for the protective lens of camera as in claim 1 wherein the device includes furthermore a temperature detector that is coupled with the control circuit. The temperature detector provides the temperature signal upon which the control circuit panel decides whether to activate the heater.

3. A defogging and defrosting devices for the protective lens of camera as in claim 1 wherein the glass or mirror object is the protective lens of a camera.

4. A defogging and defrosting devices for the protective lens of camera as in claim 1 wherein the thermal gasket is made of an insulator with high thermal conductivity.

5. A defogging and defrosting devices for the protective lens of camera as in claim 1 wherein the heater and the thermal gasket are both annular.

6. A defogging and defrosting devices for the protective lens of camera as in claim 5 wherein the torus of the heater and the thermal gasket declines from the center toward the circumference at a preset angle.

7. A defogging and defrosting devices for the protective lens of camera as in claim 1 wherein the device includes furthermore a heat transfer component that are between and directly contact with the thermal gasket and the glass or mirror object.

8. A defogging and defrosting devices for the protective lens of camera as in claim 7 wherein the heat transfer component is made of an high thermal conductivity.

9. A defogging and defrosting devices for the protective lens of camera as in claim 1 wherein the device includes furthermore a mounting unit that allows the installation of the heater and the thermal gasket inside a camera and the full contact of the thermal gasket and the protective lens of the camera.

10. A defogging and defrosting devices for the protective lens of camera as in claim 9 wherein the mounting unit includes a supporting element which is to support the heater.

11. A defogging and defrosting devices for the protective lens of camera as in claim 9 wherein the mounting unit includes several cylindrical elements and an annular bracket mounted on top of the cylindrical elements.

12. A defogging and defrosting devices for the protective lens of camera as in claim 11 wherein the heater is fixed at the inner wall of the annular bracket and the thermal gasket is set in the locating slot on top of the annular bracket.