Abstract: A method and apparatus for surface plasmon resonance imaging are provided for imaging the surface plasmon resonance signals caused by the interaction of biomolecules. In particular, the method and apparatus can image the slightly spectral change in a surface plasmon resonance mode by comparing the light intensities of two bands in the frequency domain of the surface plasmon.

Abstract: A laser detecting device able to detect and map all the contours a target object can configure and apply at least two scanning point groups on the target object. Each scanning point group includes at least two scanning points. The laser detecting device includes four light sources at different angles of incidence in relation to a diffracting element. A beam receiving element receives all the light reflected by the target object, and a central controller records emitting and receiving times of the light emitted and received. The detection beams sequentially scan the at least two scanning point groups as the central controller switches on in turn one of the four light sources as the others are powered off. Processing of data from the beam receiving element enables a three-dimensional image of the target object to be obtained.