MATRIX-TYPE PHOTODIODE DEVICE FOR SETTING FLUORESCENCE DIAGNOSIS AND CARRYING OUT PHOTOTHERAPY OF PATHOLOGICAL AREAS Russian patent published in 2001 - IPC

FIELD: medical engineering. SUBSTANCE: device has casing, at least one photodiode matrix mounted on the casing, TV camera having selective spectral optical system mounted in the center of the casing and video data presentation system. The casing is manufactured as spherical surface segment, the photodiodes are positioned on the casing so that photodiode radiation optical axes intersect in single point, photodiode radiation spectrum bandwidth belongs to photosensibilizer unit absorption wavelength bandwidth. The point of intersection of the photodiode radiation optical axes belongs to selective spectral optimum focusing plane of the optical system. The selective spectral optical system of the device has zero transparency in the emitted photodiode radiation bandwidth and a transparency window at wavelengths greater than photodiode radiation spectrum bandwidth wavelengths. Spherical surface radius, casing radius, radius of the zone under photodiodes radiation and photodiode radiation beam pattern divergence angle are bound by relation: , where R- is the spherical surface radius, p- is the casing radius, β is the photodiode radiation beam pattern divergence angle, r_o is the radius of the zone under photodiodes radiation. EFFECT: enhanced accuracy of diagnosis; higher light radiation power density; higher degree of radiation uniformity. 7 cl, 1 dwg