Light field generating device

The utility model relates to the technical field of optical teaching experiment instruments and equipment. The light field generating device comprises a laser, a beam expanding collimation assembly, afilter, a first polarizing film, a binary optical grating slide, a second polarizing film and a CCD camera which are sequentially arranged in the light transmission direction, a plurality of stripesare etched on the binary optical grating slide, and at least parts of stripe patterns are in a crossed shape. The light field generating device provided by the utility model can generate a more complex structured light field, and provides a new method and way for the generation of the structured light field; the optical field generating device does not need a spatial light modulator, is used as ateaching experiment instrument, is simple in operation, is easy for students to master, is low in cost, and saves a large amount of expenditure for colleges and universities to buy related optical experiment instruments and equ