A laser beam shaping device, comprising: an annular zone phase element that imparts a phase distribution to laser light of a predetermined wavelength, the phase distribution increasing and decreasing axisymmetrically about a rotational axis according to distance from the rotational axis; and a transmissive optical element that has a protruding surface on at least a part of a surface thereof and is made of a material having a higher refractive index than that of surroundings thereof at the predetermined wavelength, the protruding surface consisting of a shape of an approximately conical surface having a conical axis and a single base angle (β), characterized in that the annular zone phase element has, in a region affected by the laser light of a predetermined wavelength, a central region including the rotational axis and three (A1, A2, A3) annularly zoned regions, an intermediate region surrounding the central region including an annularly zoned region, and a peripheral region surrounding the intermediate region and including two (A5, A6) annularly zoned regions, wherein the annular zone phase element imparts to the laser light in the central region and the peripheral region a nonconstant phase that changes according to position for the phase distribution, and imparts to the laser light in the intermediate region a constant phase that does not change according to position for the phase distribution, and wherein the phase distribution is such that portions of the laser light of the predetermined wavelength: are uniform in phase in each of the annularly zoned regions (A1-A6), and alternately change in phase over the annularly zoned regions (A1-A6), the portions respectively corresponding to the annularly zoned regions (A1-A6), the nonconstant phase distribution being caused by different thicknesses in the annularly zoned regions (A1-A6), in that the annular zone phase element and the transmissive optical element are arranged such that the laser light is propagated along the rotational axis and the conical axis and passes through the protruding surface, in that the laser beam shaping device forms, from the laser light, a laser beam having a central lobe extending in a beam axis direction (z), and in that the annular zone phase element exerts a function of focusing light that would otherwise be distributed to side-lobes surrounding the central lobe, onto the central lobe. an annular zone phase element that imparts a phase distribution to laser light of a predetermined wavelength, the phase distribution increasing and decreasing axisymmetrically about a rotational axis according to distance from the rotational axis; and a transmissive optical element that has a protruding surface on at least a part of a surface thereof and is made of a material having a higher refractive index than that of surroundings thereof at the predetermined wavelength, the protruding surface consisting of a shape of an approximately conical surface having a conical axis and a single base angle (β), characterized in that the annular zone phase element has, in a region affected by the laser light of a predetermined wavelength, a central region including the rotational axis and three (A1, A2, A3) annularly zoned regions, an intermediate region surrounding the central region including an annularly zoned region, and a peripheral region surrounding the intermediate region and including two (A5, A6) annularly zoned regions, a central region including the rotational axis and three (A1, A2, A3) annularly zoned regions, an intermediate region surrounding the central region including an annularly zoned region, and a peripheral region surrounding the intermediate region and including two (A5, A6) annularly zoned regions, wherein the annular zone phase element imparts to the laser light in the central region and the peripheral region a nonconstant phase that changes according to position for the phase distribution, and imparts to the laser light in the intermediate region a constant phase that does not change according to position for the phase distribution, and wherein the phase distribution is such that portions of the laser light of the predetermined wavelength: are uniform in phase in each of the annularly zoned regions (A1-A6), and alternately change in phase over the annularly zoned regions (A1-A6), the portions respectively corresponding to the annularly zoned regions (A1-A6), the nonconstant phase distribution being caused by different thicknesses in the annularly zoned regions (A1-A6), in that the annular zone phase element and the transmissive optical element are arranged such that the laser light is propagated along the rotational axis and the conical axis and passes through the protruding surface, in that the laser beam shaping device forms, from the laser light, a laser beam having a central lobe extending in a beam axis direction (z), and in that the annular zone phase element exerts a function of focusing light that would otherwise be distributed to side-lobes surrounding the central lobe, onto the central lobe.