Abstract: Disclosed is a method for adjusting a light-emitting angle of a high bay light without light loss, including the steps of: determining a light distribution of a light source; iteratively calculating a surface shape of a polarizing lens according to a change in a light-emitting angle of the light source, where the optical surface shape may reach a designed light-emitting angle according to theoretical calculation, and the light distribution is uniform; symmetrically mounting a plurality of polarizing lenses having the surface shape on the left and right above the light source; and adjusting the light-emitting angle by synchronously rotating the left-right symmetrical polarizing lenses.

Abstract: A high bay light with linkage adjustment of an angle of modules is disclosed, including a mounting shaft and a plurality of linkage lamp bodies in an annular array, where a mounting member is connected to a top of the mounting shaft, and a rotating shaft is connected to an inner end of the linkage lamp body; a plurality of rotating grooves are arranged on a circumference of a lower end of the mounting shaft, and the plurality of linkage lamp bodies are hinged to the mounting shaft through the cooperation between the rotating shafts and the rotating grooves; a linkage cover is slideably provided outside the mounting shaft, and an outer side of an upper end of the linkage lamp body is connected to the linkage cover through a connecting shaft.