Patent ID: 8186828
Filing Date: 2012-05-29
Classification: G02C

Abstract:
1. Prism glasses with movable lenses adapted to be worn by a user inside a magnetic resonance imaging or nuclear magnetic resonance imaging machine which permit the user to alter the viewing angle from substantially 90 degrees downward to substantially 90 degrees upward without adversely affecting the magnetic resonance image of the user's head from the imaging machine comprising: an eyeglasses frame with view ports formed as apertures in a substantially planar frame plate on opposite sides of a central bridge formed in the frame plate, the bridge adapted to rest the frame plate on a user's nose, the frame plate having a front face and a rear face; end pieces at terminal ends of the frame plate; a pair of temples which are rotatably attached by respective hinged attachments to said end pieces and the frame plate such that opposing temples are adapted to rest on the ears of a user; a pair of prisms adapted to transmit an image 90 degrees from an image source, each prism disposed in a respective prism frame, each prism frame having prism frame mount elements thereon to permit removable attachment and detachment of the respective prisms to and from said eyeglasses frame; a pair of complementary mount elements disposed on said frame plate's front face about said view ports, each complementary mount element being complementary to a corresponding prism frame mount element retaining a respective prism; wherein in a first mode of operation, each said prism transmits a downward image 90 degrees through said respective view port, with prism frame mount elements cooperating with said complementary frame plate mount elements, and in a second mode of operation, each said prism transmits an upward image 90 degrees through said respective view port with said prism frame mount elements cooperating with said complementary frame plate mount elements; wherein the frame, end pieces, temples and end mounts are made of non-metallic plastic and the prisms are made of non-metallic plastic or glass which non-metallic plastic or glass does not adversely affect the captured magnetic resonance image of the user's head while the user wears the glasses in the imaging machine.