US Patent 8138459 Large kitchen professional oven with improved lighting

A dual-heating oven includes a cavity heated by both microwaves and at least one of convection or steam, a source for lighting the cavity and a door for closing the cavity. The door includes a first internal sealing glazing, a second intermediate internal glazing, a metal screen sandwiched between the first internal sealing glazing and the second intermediate internal glazing and a third external glazing for general protection. The lighting source is mounted on the door substantially in the plane of the second intermediate glazing.