Patent ID: 8672428

Claim:
A housing for optical elements comprising: a frame including a frame perimeter and a plurality of fasteners positioned at the frame perimeter; and a door rotatably coupled to the frame, the door including a door perimeter capable of mating engagement with the frame perimeter, and a plurality of fasteners positioned at the door perimeter, wherein the frame includes a frame flange extending from a first portion of the frame perimeter and the door includes a door flange extending from a first portion of the door perimeter, wherein one of the door flange and the frame flange is a flange with a cavity capable of receiving the other of the door flange and the frame flange, and wherein the flange with a cavity is slideable to a first position such that the cavity receives the other of the door flange and the frame flange, and wherein the flange with a cavity is slideable to a second position such that the other of the door flange and the frame flange is external to the flange with a cavity, wherein one of the frame and the door further includes a lock extending from the frame or the door perimeter and rotatable about an axis perpendicular thereto, the lock having a first portion located adjacent to the flange with a cavity when the flange with a cavity is in the first position such that, upon a rotation of the lock, the flange with a cavity slides in the direction of the second position, and the lock further having a second portion facing the other of the door flange and the frame flange such that when the door and the frame are about to contact one another, a force provided by a contact of the other of the door flange and the frame flange upon the second portion causes the rotation of the lock, and the lock having a length and the cavity having a shape for receiving the lock such that, when the door is rotated to a closed position opposing the frame, the lock has a fixed position within the cavity.