Patent ID: 7795598

Claim:
A portable optical detection appliance for detecting, in a specific marking zone ( 60 ), elements marked by fluorescence, said appliance comprising at least one light source ( 2 ) intended for the excitation of particles including a fluorophore function, wherein the light source ( 2 ) comprises at least one element for emitting a focussed light beam, consisting of an electroluminescent diode or a laser, each emission element having a similar emission peak around a specific wavelength, characterised in that it comprises: a box ( 1 , 1 ′, 1 ″) for respectively accommodating the light source ( 2 ), a user interface ( 10 ) for controlling the light source and means of electrical supply for supplying the light source ( 2 ), wherein the light source is designed to emit in the visible spectrum and to illuminate the marking zone ( 60 ) directly and the box ( 1 , 1 ′, 1 ″) comprises a light output orientated towards the marking zone ( 60 ); and optical means, whether or not integrated in the box ( 1 , 1 ′, 1 ″), comprising a first end (E 1 ) that enables the user to detect instantaneously, in the visible spectrum, the fluorescence of marked elements excited in the visible spectrum by means of the light source ( 2 ), a second end (E 2 ) opposite to said first end and capable of approaching or lying flush with said marking zone ( 60 ), a filter (F 1 ) being provided between these two ends (E 1 , E 2 ) to eliminate at least the radiations with a wavelength shorter than a specific threshold, said ends (E 1 , E 2 ) therefore allowing the passage of the light, for at least one wavelength range in the visible spectrum and being separated by a specific distance (d) that may exceed 2 cm.