A multi-angle colorimeter (100, 100a, 100b), comprising: (a) multiple first illumination sections (1A-4A) that are arranged on a virtual reference plane including a predetermined reference line and configured to perform light irradiation at different angles toward a predetermined measurement point defined on said reference line; (b) multiple second illumination sections (1B-4B) that are respectively arranged symmetrically with said multiple first illumination sections (1A-4A) about said reference line on said reference plane and configured to perform light irradiation toward said predetermined measurement point; (c) a photodetector section (40, 40a, 40b) including: first and second light receiving windows (5A, 5B) arranged on said reference plane symmetrically about said reference line and facing said measurement point so as to receive light reflected from a measurement surface located at said measurement point; and a single photodetector unit (41, 41a, 41b) including a photoelectric conversion element (52-1, 52-2, 52a, 52b) configured to receive first and second lights (g1, g2) respectively received through said first and second light receiving windows (5A, 5B) and to convert the received lights into electric signals; and (d) a computing section configured to determine detection values of said first and second lights (g1, g2) based on said signals and to obtain color information of the measurement surface located at said measurement point based on said detection values; (e) a measurement control section adapted to turn on/off the illumination sections (1A-4A; 1B-4B) such that at each turn on/turn off time only one illumination section (1A-4A; 1B-4B) illuminates the measurement surface independently and each detection value is determined of said first or second light (g1, g2) respectively received through first or second light receiving windows (5A, 5B) during the turn on/turn off time; wherein (f) said computing section is adapted to average the detection values to thereby obtain the color information. (a) multiple first illumination sections (1A-4A) that are arranged on a virtual reference plane including a predetermined reference line and configured to perform light irradiation at different angles toward a predetermined measurement point defined on said reference line; (b) multiple second illumination sections (1B-4B) that are respectively arranged symmetrically with said multiple first illumination sections (1A-4A) about said reference line on said reference plane and configured to perform light irradiation toward said predetermined measurement point; (c) a photodetector section (40, 40a, 40b) including: first and second light receiving windows (5A, 5B) arranged on said reference plane symmetrically about said reference line and facing said measurement point so as to receive light reflected from a measurement surface located at said measurement point; and a single photodetector unit (41, 41a, 41b) including a photoelectric conversion element (52-1, 52-2, 52a, 52b) configured to receive first and second lights (g1, g2) respectively received through said first and second light receiving windows (5A, 5B) and to convert the received lights into electric signals; and first and second light receiving windows (5A, 5B) arranged on said reference plane symmetrically about said reference line and facing said measurement point so as to receive light reflected from a measurement surface located at said measurement point; and a single photodetector unit (41, 41a, 41b) including a photoelectric conversion element (52-1, 52-2, 52a, 52b) configured to receive first and second lights (g1, g2) respectively received through said first and second light receiving windows (5A, 5B) and to convert the received lights into electric signals; and (d) a computing section configured to determine detection values of said first and second lights (g1, g2) based on said signals and to obtain color information of the measurement surface located at said measurement point based on said detection values; (e) a measurement control section adapted to turn on/off the illumination sections (1A-4A; 1B-4B) such that at each turn on/turn off time only one illumination section (1A-4A; 1B-4B) illuminates the measurement surface independently and each detection value is determined of said first or second light (g1, g2) respectively received through first or second light receiving windows (5A, 5B) during the turn on/turn off time; wherein (f) said computing section is adapted to average the detection values to thereby obtain the color information.