The total least squares problem
The total least squares problem
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DOI：
10.1137/1.9781611971002
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发表时间：
1993
期刊：
影响因子：
--
通讯作者：
S. Huffel;H. Zha
中科院分区：
文献类型：
--
作者：
S. Huffel;H. Zha
可见光辐射的白炽光源包括耐火支撑构件，其上具有薄的耐火材料层，支撑件和薄层都适于被加热到高温。包括薄层的材料对于可见辐射是高度吸收的，并且因此对于这种可见辐射是相应良好的发射体，并且包括薄层的材料对于红外辐射是高度透射的，并且对于这种红外辐射是相应不良的发射体。薄层中微小的光学不连续性用于散射红外辐射，并且在支撑构件中产生的红外辐射被散射回支撑构件，以便有助于支撑构件的加热。相比之下，可见辐射被薄层吸收和发射，因此该层是非常有选择性的辐射体。以这种方式，在支撑构件中产生的红外辐射被选择性地散射，以有助于支撑构件的加热，并因此有助于薄层发射的更多可见辐射的产生。
Incandescent source of visible radiations comprises a refractory support member having a thin, refractory material layer thereover, with both the support and the thin layer adapted to be heated to high temperatures. The material comprising the thin layer is highly absorptive for visible radiations and thus is a correspondingly good emitter for such visible radiations, and the material comprising the thin layer is highly transmissive for infrared radiations and a correspondingly poor emitter for such infrared radiations. Minute optical discontinuities in the thin layer act to scatter infrared radiations and the infrared radiations which are generated in the support member are scattered back to the support member in order to contribute to the heating of same. Visible radiations, in contrast, are absorbed and emitted by the thin layer so that this layer is a very selective radiator. In this manner, infrared radiations generated in the support member are selectively scattered to contribute to the heating of the support member and thus the generation of more visible radiations which the thin layer emits.