Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Palm Oil Res And Dev Board, Fotontec Sdn Bhd, Univ MalayafiledCriticalPalm Oil Res And Dev Board
Priority to MYPI9900962priorityCriticalpatent/MY129868A/en
Publication of MY129868ApublicationCriticalpatent/MY129868A/en
Investigating Or Analysing Materials By Optical Means
(AREA)
Abstract
THE PRESENT INVENTION RELATES TO METHODS OF MEASURING TRANSPARENCY OR CLARITY OF MATERIALS AND APPARATUS THEREFOR. A LIGHT SOURCE (1) WHICH PRODUCES A COLLIMATED BEAM OF LIGHT (3) CAN BE REDUCED IN INTENSITY USING AN OPTIONAL ATTENUATION MEANS (2), THIS BEING NECESSARY IF THE SPECIMENS ALLOW ENOUGH LIGHT THROUGH TO OVERLOAD THE PHOTO-DETECTOR (9). THE COLLIMATED BEAM (3) IMPINGES UPON A SPECIMEN (7) SUBSTANTIALLY AT RIGHT ANGLES TO THE BEAM (3), AND IN PASSING THROUGH IT, DIVERGES INTO A WIDER BEAM (4) THE LIGHT EMERGING FROM THE SPECIMEN IS ARRANGED TO FALL ONTO A PHOTO-DETECTOR (9) AFTER PASSING THROUGH AN APERTURE (8). THIS APERTURE (8) CAN BE MADE SMALL TO MEASURE THE MAXIMUM LIGHT INTENSITY AT THE OF THE AXIS OF THE BEAM (3) AND LARGER TO MEASURE THE TOTAL OR SEMI-TOTAL LIGHT INTENSITY OF THE LIGHT (6) EMERGING FROM THE SPECIMEN (7). THE RATIO OF MAXIMUM LIGHT INTENSITY TO EITHER TOTAL OR SEMI-TOTAL LIGHT INTENSITY PROVIDES A DIMENSIOLESS RATIO WHICH IS DIRECTLY RELATED TO THE TRANSPARENCY OR CLARITY OF THE MATERIAL OF THE SPECIMEN (7).FIGURE 1
MYPI99009621999-03-151999-03-15Method of measuring transparency or clarity of materials and apparatus therefor
MY129868A
(en)