DOME WINDOW AND SURVEILLANCE CAMERA DEVICE COMPRISING SUCH A DOME WINDOW

• US 20120243861A1
• Filed: 03/23/2012
• Published: 09/27/2012
• Est. Priority Date: 03/23/2011
• Status: Abandoned Application

• Current Assignee: Axis AB (Canon Inc.)
• Original Assignee: Axis AB (Canon Inc.)
• Inventors: Svensson, Sven, Lundberg, Stefan
• Application Number:
  US13/428,627
• Publication Number:
  US 20120243861A1
• Time in Patent Office: Days
• US Class Current: 396/427
• CPC Class Codes: G03B 11/00 Filters or other obturators specially adapted for photographic purposes
• CPC Class Codes: G03B 17/02 Bodies
• CPC Class Codes: G08B 13/19619 Details of casing
• CPC Class Codes: H04N 7/183 for receiving images from a single remote source

Abstract

A dome window for a surveillance camera device includes a first section and a second section. The first section is joined to the second section along a joint in which a joint end of the first section is attached to a joint end of the second section. A light absorber is arranged in or on the joint.

Claims

1. A dome window for a surveillance camera device, comprising a first section and a second section, wherein the first section is joined to the second section along a joint in which a joint end of the first section is attached to a joint end of the second section, wherein a light absorber is arranged in or on the joint.

2. The dome window according to claim 1, in which the light absorber comprises a covering with light absorbing properties applied on at least one of the joint ends of the first and second sections.

3. The dome window according to claim 1, in which the light absorber comprises a covering with light absorbing properties applied on the inside or the outside of the dome window and extending over the joint.

4. The dome window according to claim 3, in which the covering with light absorbing properties is selected from the group consisting of a tape, a double sided tape, a pigmented adhesive and a pigmented coating, ink or paint.

5. The dome window according to claim 1, in which the joint ends have corresponding cross section profiles.

6. The dome window according to claim 1, in which the first section has a hemispheric shape.

7. The dome window according to claim 1, in which the second section has a shape of a spherical segment.

8. The dome window according to claim 6, in which the first and second sections form parts of a common sphere shape.

9. The dome window according to claim 1, in which the joint is annular.

10. The dome window according to claim 1, in which the first section is a mirror image of the second section.

11. The dome window according to claim 1, in which the wall thickness of the first and second sections is in the range of 1 to 2 mm.

12. The dome window according to claim 1, in which the first and second sections are made of a plastic material such as PMMA or PC.

13. A surveillance camera device comprising the dome window according to claim 1.

14. The surveillance camera device according to claim 13, comprising a tilt-able or rotatable lens arrangement with a front lens surface arranged at a constant distance to a hemispherical part of the dome window.

15. The surveillance camera device according to claim 14, in which the distance is in the range of 1-20 mm and more preferably 4-10 mm.