Optimization of Multiband White-Light Illuminants for Specified Color Temperatures

<div>Optimized relative spectral power distributions (<svg height="11.8533pt" id="M137" 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="M453 623H65C60 580 57 531 46 472H80C104 539 109 548 175 548H389C309 380 194 169 90 0L98 -12L175 -2C274 207 366 407 462 610L453 623Z" id="g58-53"></path><glyph.data ascent="1007" descent="-369" horiz-adv-x="487" vert-adv-y="487"></glyph.data></g></svg>, <svg height="11.8533pt" id="M138" 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="M253 635C142 635 71 555 71 471C71 400 113 353 178 316C143 295 107 268 91 252C70 231 46 202 46 157C46 50 132 -12 241 -12C329 -12 442 52 442 168C442 257 379 305 311 343C354 374 380 398 388 407C407 428 417 458 417 487C417 568 348 635 253 635ZM240 600C288 600 340 564 340 481C340 422 314 387 279 360C207 395 148 426 148 499C148 549 181 600 240 600ZM252 23C188 23 129 72 129 163C129 218 162 266 211 298C288 261 360 217 360 144C360 68 312 23 252 23Z" id="g58-54"></path><glyph.data ascent="1007" descent="-369" horiz-adv-x="487" vert-adv-y="487"></glyph.data></g></svg>, <svg height="11.8533pt" id="M139" 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="M247 635C116 635 39 517 39 421C39 315 112 237 221 237C240 237 258 241 281 253L349 289C314 140 205 42 60 19L66 -15C90 -15 153 -6 207 16C344 70 447 199 447 385C447 521 373 635 247 635ZM231 598C329 598 356 478 356 390C356 371 355 348 352 325C329 309 297 297 262 297C179 297 127 369 127 456C127 515 155 598 231 598Z" id="g58-55"></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="M140" 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="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><g transform="matrix(.0091,0,0,-0.0091,14.104,3.001)"><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>.</div>

Advances in OptoElectronics

fig5

Figure 5

Figure 5: Optimization of Multiband White-Light Illuminants for Specified Color Temperatures 