Patent ID: 7791730

Claim:
A surface plasmon resonance meter, comprising: a backlight module, comprising: a light source, providing a light beam; a light guide, wherein the light beam enters the light guide from the light source; a diffuser; a Brightness Enhancement Film; and a reflector; a line-slot plate, comprising a light outlet, wherein the light beam travels from the light guide, passes the diffuser and the Brightness Enhancement Film to the line-slot plate, is reflected by the line-slot plate toward the reflector, is multi-reflected between the line-slot plate and the reflector, and leaves the backlight module through the light outlet; a parabolic mirror, receiving the light beam from the light outlet, wherein the light beam is reflected by the parabolic mirror to be shaped into a parallel light beam; a linear polarizer, wherein the light beam travels from the parabolic mirror to the linear polarizer; a sensing chip; a prism, comprising a light entering surface, a detection surface and a light exiting surface, wherein the light beam travels from the linear polarizer, enters the prism through the light entering surface, contacts the sensing chip at the detection surface, is totally reflected by the sensing chip, and leaves the prism through the light exiting surface; and a photo detector array, receiving the light beam emitted from the light exiting surface.