Two-piece radiation detector of the pocket dosimeter type

Claim 1

APPARATUS FOR MEASURING RADIATION COMPRISING CHAMBER MEANS IN WHICH IONIZATION TAKES PLACE DUE TO RADIATION TO BE DETECTED, FRAME MEANS SITUATE IN SAID CHAMBER MEANS, FIBER MEANS BEING FLEXIBLE AND BEING CONNECTED TO SAID FRAME MEANS, MEANS FOR CAUSING SAID FLEXIBLE FIBER MEANS TO BE REPELLED FROM SAID FRAME MEANS, SAID IONIZATION CAUSING SAID FIBER MEANS TO MOVE A CORRESPONDING DEGREE CLOSER TO SAID FRAME MEANS, THE POSITION OF SAID FIBER MEANS RELATIVE TO SAID FRAME ALONG A GIVEN DIRECTION BEING THUS REPRESENTATIVE OF THE RADIATION ENCOUNTERED, A FIRST ELONGATED HOUSING, SAID CHAMBER MEANS, FRAME MEANS, FIBER MEANS, AND MEANS FOR CAUSING SAID FLEXIBLE FIBER MEANS TO BE REPELLED FROM SAID FRAME MEANS BEING IN SAID FIRST HOUSING, SAID HOUSING BEING LIGHT TRANSMITTING ALONG ITS AXIS AND SAID FIBER RESPONDING IN SAID GIVEN DIRECTION TRANSVERSE SAID AXIS, A SECOND ELONGATED HOUSING ATTACHABLE TO AND REMOVABLE FROM SAID FIRST HOUSING BY READILY SEPARABLE TELESCOPIC COAXIAL ENGAGEMENT THEREWITH, A LIGHT TRANSMITTING EYEPIECE ASSEMBLY BEING IN SAID SECOND HOUSING ALONG THE AXIS THEREOF AND COMPRISING A RETICLE THEREIN HAVING RADIATION UNIT MARKINGS THEREON ALONG A GIVEN DIRECTION TRANSVERSE THE AXIS OF SAID SECOND HOUSING, MEANS FOR LOCATING SAID FIRST AND SECOND HOUSING IN A PREDETERMINED ROTATIONAL REGISTRATION UPON TELESCOPIC ENGAGEMENT WHEREIN THE RETICLE IN SAID SECOND HOUSING IS ALIGNED WITH THE FRAME MEANS IN SAID FIRST HOUSING WHEREBY THE DIRECTION OF FIBER MEANS DISPLACEMENT COINCIDES WITH THE DIRECTION OF CORRESPONDING DISPLACEMENT OF THE RADIATION UNIT INDICATION MARKINGS ON THE RETICLE SO THEY ARE SUPERIMPOSED UPON VIEWING ALONG THE AXIS OF THE ASSEMBLED FIRST AND SECOND HOUSINGS.