Optimization of Multiband White-Light Illuminants for Specified Color Temperatures

<div>Optimized relative spectral power distributions (<svg height="11.7391pt" id="M133" style="vertical-align:-3.05101pt" version="1.1" viewbox="-0.0498162 -8.68809 11.3617 11.7391" width="11.3617pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M416 501L399 642C356 655 314 665 271 665C140 665 63 582 63 486C63 372 163 325 229 290C304 250 359 217 359 142C359 70 316 25 240 25C138 25 94 125 78 186L44 178C52 123 64 45 72 21C81 16 96 8 121 0S179 -15 220 -15C353 -15 445 68 445 176C445 289 350 335 270 375C191 414 143 449 143 520C143 572 177 627 253 627C340 627 366 556 382 495L416 501Z" id="g58-81"></path><glyph.data ascent="1007" descent="-369" horiz-adv-x="484" vert-adv-y="484"></glyph.data></g><g transform="matrix(.0091,0,0,-0.0091,6.292,3.001)"><path d="M462 177V227H365V632H320C216 495 117 351 21 208V177H284V109C284 42 281 39 190 31V0H451V31C369 39 365 42 365 108V177H462ZM284 227H88C156 336 218 430 282 519H284V227Z" id="g58-50"></path><glyph.data ascent="1007" descent="-369" horiz-adv-x="487" vert-adv-y="487"></glyph.data></g></svg>, <svg height="11.8533pt" id="M134" style="vertical-align:-3.16521pt" version="1.1" viewbox="-0.0498162 -8.68809 11.3617 11.8533" width="11.3617pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M416 501L399 642C356 655 314 665 271 665C140 665 63 582 63 486C63 372 163 325 229 290C304 250 359 217 359 142C359 70 316 25 240 25C138 25 94 125 78 186L44 178C52 123 64 45 72 21C81 16 96 8 121 0S179 -15 220 -15C353 -15 445 68 445 176C445 289 350 335 270 375C191 414 143 449 143 520C143 572 177 627 253 627C340 627 366 556 382 495L416 501Z" id="g58-81"></path><glyph.data ascent="1007" descent="-369" horiz-adv-x="484" vert-adv-y="484"></glyph.data></g><g transform="matrix(.0091,0,0,-0.0091,6.292,3.001)"><path d="M158 548H390L417 615L410 623H122L83 318C106 326 142 337 185 337C296 337 350 275 350 188C350 116 308 42 225 42C165 42 121 74 100 93C89 101 83 99 72 92C60 81 51 68 50 59C47 46 51 39 66 24C82 9 125 -12 172 -12C225 -11 291 15 346 59C409 108 437 166 437 226C437 309 370 397 242 397C214 397 170 382 133 369L158 548Z" id="g58-51"></path><glyph.data ascent="1007" descent="-369" horiz-adv-x="487" vert-adv-y="487"></glyph.data></g></svg>, <svg height="11.8533pt" id="M135" style="vertical-align:-3.16521pt" version="1.1" viewbox="-0.0498162 -8.68809 11.3617 11.8533" width="11.3617pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M416 501L399 642C356 655 314 665 271 665C140 665 63 582 63 486C63 372 163 325 229 290C304 250 359 217 359 142C359 70 316 25 240 25C138 25 94 125 78 186L44 178C52 123 64 45 72 21C81 16 96 8 121 0S179 -15 220 -15C353 -15 445 68 445 176C445 289 350 335 270 375C191 414 143 449 143 520C143 572 177 627 253 627C340 627 366 556 382 495L416 501Z" id="g58-81"></path><glyph.data ascent="1007" descent="-369" horiz-adv-x="484" vert-adv-y="484"></glyph.data></g><g transform="matrix(.0091,0,0,-0.0091,6.292,3.001)"><path d="M141 347C170 480 264 541 327 570C364 587 403 598 436 605L429 641C389 634 339 622 300 609C192 569 37 458 37 239C37 86 126 -12 245 -12C367 -12 454 89 454 210C454 314 379 397 272 397C252 397 231 391 208 380L141 347ZM231 338C323 338 366 257 366 174C366 107 339 27 263 27C180 27 129 123 129 244C129 268 130 291 135 310C158 323 192 338 231 338Z" id="g58-52"></path><glyph.data ascent="1007" descent="-369" horiz-adv-x="487" vert-adv-y="487"></glyph.data></g></svg>) for Illuminant <svg height="11.8533pt" id="M136" style="vertical-align:-3.16521pt" version="1.1" viewbox="-0.0498162 -8.68809 19.2026 11.8533" width="19.2026pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M43 650V617C122 612 130 606 130 522V128C130 44 122 37 34 32V0H275C400 0 497 25 573 82C652 142 698 229 698 350C698 445 662 518 613 565C549 625 456 650 327 650H43ZM217 544C217 580 220 591 229 599C240 607 264 613 311 613C380 613 437 599 482 570C561 523 598 436 598 336C598 177 511 40 324 40C248 40 217 61 217 135V544Z" id="g58-66"></path><glyph.data ascent="1007" descent="-369" horiz-adv-x="744" vert-adv-y="744"></glyph.data></g><g transform="matrix(.0091,0,0,-0.0091,9.672,3.001)"><path d="M158 548H390L417 615L410 623H122L83 318C106 326 142 337 185 337C296 337 350 275 350 188C350 116 308 42 225 42C165 42 121 74 100 93C89 101 83 99 72 92C60 81 51 68 50 59C47 46 51 39 66 24C82 9 125 -12 172 -12C225 -11 291 15 346 59C409 108 437 166 437 226C437 309 370 397 242 397C214 397 170 382 133 369L158 548Z" id="g58-51"></path><glyph.data ascent="1007" descent="-369" horiz-adv-x="487" vert-adv-y="487"></glyph.data></g><g transform="matrix(.0091,0,0,-0.0091,14.104,3.001)"><path d="M245 635C92 635 37 457 37 312C37 148 92 -12 244 -12C395 -12 449 165 449 312C449 469 394 635 245 635ZM243 598C332 598 358 454 358 312C358 172 334 26 245 26C158 26 128 174 128 313S151 598 243 598Z" id="g58-46"></path><glyph.data ascent="1007" descent="-369" horiz-adv-x="487" vert-adv-y="487"></glyph.data></g></svg>.</div>

Advances in OptoElectronics

fig4

Figure 4

Figure 4: Optimization of Multiband White-Light Illuminants for Specified Color Temperatures 