A Colorimeter for Pyrotechnic Smokes *
نویسندگان
چکیده
A t ris timulus photoelectric colorimeter has been designed ~o. measure the chromaticities of p yro techni c smokes ha ving hi ghly saturat~d colors. To ~llInllmZe edg,e, effects an.d r~a: wall r efl ection t he smoke chamber was desIgn ed as a 36-111Ch cube: Ihree fil ters " el e designed to approxim.ate .the dayligh~ e I E standard observer Junctl~ns for. t he SOUl'C~ filter -pho\.otube comblllatlOns of t he lll~trum~nt: As the e IE yan.d z-functlOl1S are .ummodal li ttle difficulty was encountered III deslgl1111g fil ters to approxlm~te th~se functIOn s. The c'IE 3.-function, which is bimodal , required a divided fil ter t<;> apl)TOXllna~~ Its t wo ,I,obes. The filter constructed was composed of two ~ectors~ one app~'oxllnatmg t he blue lobe ,the other a pproximating the " red lobe" of the x-functIOn. SatIsfactory results have been obtained wit h th is colorimeter, using M Llnsell papers as standards.
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