| 摘要 |
PURPOSE:To enable microspectrophotometry with high accuracy, by reflecting incident light to the direction separating from an optical axis from a first reflective surface by an objective lens and subsequently reflecting the same to a condensing direction from a second reflective surface. CONSTITUTION:A specimen 7 being an object to be measured is arranged to a position 17 and only light in the vicinity of an optical axis among the light from the specimen 7 is reflected to the diection separating from the optical axis by a second reflective mirror 15 and subsequently reflected to a consensing direction from a first reflective mirror 14 to form an image at an image forming point 18. By this mechanism, only light, of which the incident angle to the specimen 7 is larger than an angle theta1 and smaller than the angle theta2, contributes to measurement. That is, because angles theta1, theta2 are clearly smller than respective angles theta3, theta4, when the specimen 7 is viewed from this point, light in the vicinity of the optical axis in a TV camera can take a value more approximate to an objective practical system. |
