I have tried to adjust the material of the lamp shade so that the light goes through. However, it continuous to contain the light inside the object as pictured.
Hello- it’s hard to say without a file - plase you post it, or send to tech@mcneel.com, if it is confidential, with a link back to this topic in your comments.
Quick test scene by myself with both say point light or an object with emissive material appears to be working fine when using a regular glass material
If you use an emitter material maybe try to model a very slight „pillow effect“ (that the middle point of the object is the deepest) to the light plate.
To me (without a 3dm file it’s a guess), it looks like the opaque objects around your light object are still casting shadows which makes the light not seen. Select those objects and in the Properties panel disable Casts Shadows.