Device for determining a refractive index in a large number of points of a physical environment, for example part of a human or animal body

: about equipment for the present invention to ask for the refractive index in many points p, for example, 10000 points, of physical environment (44) -- here, each point, It is marked by fixed marking (48, 49) which occupies the center of gravity of an element tile, and p element tiles (100) form 舗床 of physical environment. In order to carry out the irradiation on a series of p same planes characterized by the present invention containing the following: (here each irradiation), After passing physical environment (44) along with the optical path defined noting that it is the shortest light locus between the two points Ap and Bp, meeting the move guide (102) which reaches at the arriving point Bp which progresses from the starting point Ap defined to a move guide (102), and is defined by a detection means (40) -- one element step -- operation equipment (42) -- or, . Along with the above-mentioned move guide, one element step was fixed to the operation equipment (42) mirror (38). For example, optical laser (37) like infrared laser (42) ; So that it may begin from the moment of the beginning when this irradiation leaves the starting point Ap, and Tp may be recorded the moment each irradiation reaches at the arriving point Bp. Each irradiation and time-synchronization-ized timer (104) ; As opposed to the thing; for which an optical path is investigated out of all the optical paths which it separates from the starting point Ap and all reach at the arriving point Bp, and the detected lapsed time Tp, p linear equations for [each] p investigated optical paths, an element optical path (L), and a refractive index (N) are left, and the procession of an element optical path [L]. [converge and] The computer (106) programmed appropriately because of the thing; for which a vector [N] * [L] = [T] matrix equation is solved about the refractive index [N] of an element tile by repeating the process (1) and (2) until it also converges the vector of the refractive index [N] of an element tile. [Selection figure] Fig. 4