<；P>；PROBLEM TO BE SOLVED: To provide an elliptic or needle-like polymer particle capable of enhancing an optical characteristic such as light diffusability and light convergency, a frictional characteristic such as slidability, and the like, and having a high aspect ratio. <；P>；SOLUTION: This elliptic or needle-like polymer particle has fine irregularity on a surface, and the aspect ratio P<；SB>；1<；/SB>；satisfies P<；SB>；1<；/SB>；&ge；1.8, where P<；SB>；1<；/SB>；=major diameter L<；SB>；1<；/SB>；/minor diameter D<；SB>；1<；/SB>；is calculated based on the major diameter L<；SB>；1<；/SB>；in a projection two-dimensional diagram obtained by emitting light from a direction orthogonal to an major-axial direction of the particle, and based on a minor diameter D<；SB>；1<；/SB>；therein. <；P>；COPYRIGHT: (C)2010,JPO&INPIT
