Concretely it seems like the skin surface of the person, the optical measuring unit which measures the optical state of the sample surface. The particular optical measuring unit has, the 1st lighting device which irradiates the aforementioned surface the 1st lighting beam (22) with (16), the response beam (42) the detection device which is detected (28), the aforementioned response beam (42) at least one which is received screen (27), and one picture detection part (29) at least. The aforementioned 1st lighting beam (42) the aforementioned surface (14) to 1st incidence angle (38) with incidence it does, the aforementioned response beam (42) the aforementioned 1st lighting beam (22) the aforementioned sample for (12) it is response. The particular optical measuring unit (10) the 2nd lighting beam (24) the 2nd lighting device which is offered (18) it possesses. The aforementioned 2nd lighting beam (24) the aforementioned 1st incidence angle (38) with the 2nd incidence angle which differs (54) with the aforementioned surface (14) incidence it does.具体的にはヒトの皮膚表面のような、試料表面の光学状態を測定する光学測定装置。当該光学測定装置は、第1照射ビーム(22)によって前記表面を照射する第1照射装置(16)、応答ビーム(42)を検出する検出装置(28)、前記応答ビーム(42)を受ける少なくとも1つのスクリーン(27)、及び少なくとも1つの画像検出部品(29)を有する。前記第1照射ビーム(42)は前記表面(14)へ第1入射角(38)で入射し、前記応答ビーム(42)は前記第1照射ビーム(22)に対する前記試料(12)の応答である。当該光学測定装置(10)は第2照射ビーム(24)を供する第2照射装置(18)を有する。前記第2照射ビーム(24)は前記第1入射角(38)とは異なる第2入射角(54)で前記表面(14)に入射する。