Electric meter cover including an integrally molded optical port with lens

• US 6,737,855 B2
• Filed: 03/15/2002
• Issued: 05/18/2004
• Est. Priority Date: 03/15/2002
• Status: Expired due to Term

• Current Assignee: Power Measurement Ltd. (Schneider Electric SE)
• Original Assignee: Power Measurement Ltd. (Schneider Electric SE)
• Inventors: Lightbody, Simon H., Huber, Benedikt T., Macfarlane, I. Ross
• Primary Examiner(s): Patidar, Jay
• Application Number:
  US10/098,762
• Publication Number:
  US 20040061490A1
• Time in Patent Office: 795 Days
• Field of Search: 324/155, 324/156, 324/157, 324/96, 324/110, 734/31, 250/239, 340/870.28
• US Class Current: 324/156
• CPC Class Codes: G01R 22/065 related to mechanical aspects

Abstract

A cover for use on an electric meter is disclosed which includes an optical port which aids in transmission of optical signals from an optical transmitter, such as a light emitting diode, to an optical receiver, such as a photodiode or similar. The optical port further includes lenses located in the optical transmission path to focus the optical signal, either convergently or divergently, proximate to the optical receiver thereby improving signal reception.

Claims

1. An electric meter cover comprising an integrally molded optical port and at least one light pipe, said light pipe further comprising a lens, said light pipe operative to allow transmission of an optical signal toward said lens and wherein said lens is operative to focus said optical signal, wherein said lens is integrally molded into said electric meter cover.

2. The electric meter cover of claim 1 wherein said lens is further operative to cause said optical signal to converge toward a receiver proximate to said lens.

3. The electric meter cover of claim 1 wherein said optical signal is transmitted by a transmitter proximate to said lens.

4. The electric meter cover of claim 1 wherein said optical signal comprises a communications signal.

5. The electric meter cover of claim 1 wherein said cover comprises a plastic material.

6. The electric meter cover of claim 1 further comprising an integrally molded viewing window.

7. The electric meter cover of claim 6, wherein said integrally molded viewing window operative to magnify an appearance of a display proximate to said integrally molded viewing window.

8. The electric meter cover of claim 1 wherein said lens is convex.

9. The electric meter cover of claim 1 wherein said lens is concave.

10. The electric meter cover of claim 1, wherein said optical signal comprises a wavelength located substantially within the visible spectrum.

11. The electric meter cover of claim 1, wherein said optical signal comprises a wavelength located substantially within the infrared spectrum.

12. The electric meter cover of claim 1, wherein said electric meter cover further comprising a second integrally molded lens operative to allow a transmission of a second optical signal.

13. The electric meter cover of claim 12, wherein said second integrally molded lens is operative to cause said second optical signal to substantially converge toward a receiver proximate to said second integrally molded lens.

14. A meter comprising:

a housing defining an interior portion and an exterior portion, said meter located in said interior portion, said housing including an optically transmissive portion operative to convey an optical signal between said interior and exterior portions; and

wherein said meter further comprises an internal optical transmitter, said internal optical transmitter located within said housing and substantially proximate to said optically transmissive portion, said internal optical transmitter operative to generate a first optical signal to an external optical receiver, said external optical receiver located in said exterior portion; and

further wherein, said optically transmissive portion further comprises a first integrally molded lens, said first integrally molded lens operative to focus said first optical signal.

15. The meter of claim 14, wherein said lens is convex.

16. The meter of claim 14 wherein said lens is concave.

17. The meter of claim 14, further comprising an internal optical receiver located within said housing and substantially proximate to said optically transmissive portion, said internal optical receiver operative to receive a second optical signal from an external optical transmitter located in said exterior portion and wherein said optically transmissive portion further comprises a second integrally molded lens operative to focus said second optical signal.

18. The meter of claim 17, wherein said second integrally molded lens is operative to cause said second optical signal to substantially converge upon said internal optical receiver.

19. The meter of claim 14, wherein said first optical signal comprises a wavelength located substantially within the visible spectrum.

20. The meter of claim 14, wherein said first optical signal comprises a wavelength located substantially within the infrared spectrum.

21. The meter of claim 14, wherein said first integrally molded lens is operative to cause said first optical signal to substantially converge upon said external optical receiver.

22. The meter of claim 14, wherein said first integrally molded lens is operative to increase a divergence of said first optical signal.

23. The meter of claim 14, wherein said housing further comprises a viewing window, said meter comprising a display located in said interior portion and proximate to said viewing window, said viewing window operative to magnify an appearance of said display to said exterior portion.

24. The meter of claim 14, wherein said housing further comprises a viewing window.

25. The meter of claim 14, wherein said housing comprises a plastic material.

26. The meter of claim 14 wherein said optical signal comprises a communications signal.