Optical waveguide device for a cooking appliance

Patent metadata

Field	Value
Publication number	US-12546481-B2
Application number	US-202218578058-A
Country	US
Kind code	B2
Filing date	Jul 12, 2022
Priority date	Jul 12, 2021
Publication date	Feb 10, 2026
Grant date	Feb 10, 2026

Abstract

An optical waveguide device for guiding light emitted from a light source into an interior space of a household appliance includes an optical waveguide designed to emit light, introduced into the optical waveguide at a first end of the optical waveguide, to a second end of the optical waveguide. The optical waveguide has a cylindrical outer surface between the first end of the optical waveguide and the second end of the optical waveguide. A carrier is can be coupled directly or indirectly to the household appliance and includes an optical waveguide receptacle designed to receive the optical waveguide and to fix the optical waveguide axially and radially, said carrier connected to the optical waveguide by way of the outer surface, with the optical waveguide receptacle contacting the outer surface of the optical waveguide over a periphery of the optical waveguide.

First claim

The invention claimed is:

1 . An optical waveguide device for guiding light emitted from a light source into an interior space of a household appliance, in particular a cooking chamber of a cooking appliance, the optical waveguide device comprising:
an optical waveguide designed to emit light, introduced into the optical waveguide at a first end of the optical waveguide, to a second end of the optical waveguide, said optical waveguide having a cylindrical outer surface between the first end of the optical waveguide and the second end of the optical waveguide; and a carrier capable of being directly or indirectly coupled to the household appliance and comprising an optical waveguide receptacle designed to receive the optical waveguide and to fix the optical waveguide axially and radially, said carrier connected to the optical waveguide by way of the outer surface, with the optical waveguide receptacle contacting the outer surface of the optical waveguide over a periphery of the optical waveguide, wherein the optical waveguide receptacle of the carrier is embodied as a clamping lug elastically pretensioned toward the central axis of the optical waveguide receptacle and designed to fix the optical waveguide in the carrier exclusively by a force-fit connection.

2 . The optical waveguide device of claim 1 , wherein the optical waveguide is a glass optical waveguide.

3 . The optical waveguide device of claim 1 , wherein the outer surface has a circular cylindrical configuration.

4 . The optical waveguide device of claim 1 , wherein the optical waveguide receptacle of the carrier is embodied to be rotationally symmetrical.

5 . The optical waveguide device of claim 1 , wherein the optical waveguide receptacle uniformly contacts the outer surface of the optical waveguide over the periphery of the optical waveguide.

6 . The optical waveguide device of claim 1 , wherein the clamping lug rests at an acute angle against the outer surface of the optical waveguide.

7 . The optical waveguide device of claim 1 , wherein the clamping lug comprises a lug edge which is matched to an outer contour of the optical waveguide in terms of its geometry.

8 . The optical waveguide device of claim 1 , wherein the clamping lug pretensions the optical waveguide against a contact surface.

9 . The optical waveguide device of claim 1 , wherein the optical waveguide receptacle is embodied as a plurality of said clamping lug elastically pretensioned toward the central axis of the optical waveguide receptacle and designed to uniformly contact the optical waveguide over the periphery of the optical waveguide.

10 . The optical waveguide device of claim 1 , wherein the optical waveguide receptacle of the carrier is embodied as an adhesive surface so as to fix the optical waveguide in the carrier exclusively by a material-bonded connection.

11 . The optical waveguide device of claim 1 , wherein the optical waveguide is fixed in the optical waveguide receptacle of the carrier exclusively in a material-bonded manner by In-mold injection molding.

12 . The optical waveguide device of claim 1 , wherein the carrier is embodied to be rotationally symmetrical, in respect of the central axis fiber of the optical waveguide receptacle.

13 . The optical waveguide device of claim 1 , wherein the carrier is embodied in one piece.

14 . The optical waveguide device of claim 1 , wherein the carrier has an external geometry which faces away from the optical waveguide and is designed to fix the optical waveguide device in a lighting device of the household appliance.

15 . An optical waveguide device for guiding light emitted from a light source into an interior space of a household appliance, in particular a cooking chamber of a cooking appliance, the optical waveguide device comprising:
an optical waveguide designed to emit light, introduced into the optical waveguide at a first end of the optical waveguide, to a second end of the optical waveguide, said optical waveguide having a cylindrical outer surface between the first end of the optical waveguide and the second end of the optical waveguide; and a carrier capable of being directly or indirectly coupled to the household appliance and comprising an optical waveguide receptacle designed to receive the optical waveguide and to fix the optical waveguide axially and radially, said carrier connected to the optical waveguide by way of the outer surface, with the optical waveguide receptacle contacting the outer surface of the optical waveguide over a periphery of the optical waveguide, wherein the optical waveguide receptacle of the carrier and the optical waveguide are connected by a thermal press fit connection so as to fix the optical waveguide in the carrier exclusively by a force-fit connection.

16 . The optical waveguide device of claim 15 , wherein the carrier comprises a sleeve carrier including:
a sleeve; and a flange arranged centrally on the sleeve.

17 . An optical waveguide device for guiding light emitted from a light source into an interior space of a household appliance, in particular a cooking chamber of a cooking appliance, the optical waveguide device comprising:
an optical waveguide designed to emit light, introduced into the optical waveguide at a first end of the optical waveguide, to a second end of the optical waveguide, said optical waveguide having a cylindrical outer surface between the first end of the optical waveguide and the second end of the optical waveguide; and a carrier capable of being directly or indirectly coupled to the household appliance and comprising an optical waveguide receptacle designed to receive the optical waveguide and to fix the optical waveguide axially and radially, said carrier connected to the optical waveguide by way of the outer surface, with the optical waveguide receptacle contacting the outer surface of the optical waveguide over a periphery of the optical waveguide, wherein the outer surface of the optical waveguide is designed increased surface roughness or an increased coefficient of roughness in a contact section of the optical waveguide, compared with a non-contact section of the optical waveguide.

Assignees

• Bsh Hausgeraete Gmbh

Inventors

• Beyer Ludwig
• Balzer Maxim
• Bär Joschka

Classifications

• G02B6/0008

  the light being emitted at the end of the fibre · CPC title

• H05B6/6444

  Aspects relating to lighting devices in the microwave cavity · CPC title

• F24C7/082

  on ranges, e.g. control panels, illumination · CPC title

• F24C15/008 Primary

  Illumination for oven cavities · CPC title