Patent ID: 7490963
Filing Date: 2009-02-17
Classification: G02B,G02F

Abstract:
1. A diffusion plate, comprising: at least two coplanar diffusion units; each of the diffusion units comprising two major faces at opposite sides thereof respectively and at least one connecting portion, the connecting portions of each two adjacent of the diffusion units mating with each other to connect the at least two diffusion units together; wherein one of each pair of mating connecting portions includes a connection protrusion, and the other of each pair of mating connecting portions includes a connection slot cofigured to engagingly receive the connection protrusion; and each connection protrusion is generally between and spaced a distance from both major faces and has a shape with at least three surfaces, and each slot is generally between and spaced a distance from both major surfaces and has a shape defined by at least three surfaces; wherein the connection protrusion and the connection slot are respectively provided at opposing sides of the corresponding diffusion units.