Patent ID: 7990630

Claim:
A lens device comprising: a lens comprising a body and at least one retention clip, the retention clip comprising a latch, the latch having a first edge; a housing comprising a first hole, a first surface and a catch, the housing capable of receiving the lens; an ejection block comprising a second edge and a second hole, the second hole having a radius; and a fastener passing through the first hole and the second hole, the fastener comprising a first end and a second end, the second end having a radius, wherein the latch and catch are configured to retain the lens to the housing, depending on position of the ejection block, wherein the fastener is at least partially threaded, wherein the first hole comprises threading compatible with the fastener threading, wherein the first edge is configured to slide along the second edge, causing the retention clip to bend at an elbow, wherein the fastener is configured to rotate, wherein rotation in a first direction causes the ejection block to move towards the housing, wherein moving towards the housing causes the first edge to slide along the second edge thereby pushing the latch away from the catch.