| 摘要 |
PCT No. PCT/FI97/00451 Sec. 371 Date Jan. 19, 1999 Sec. 102(e) Date Jan. 19, 1999 PCT Filed Jul. 17, 1997 PCT Pub. No. WO98/03842 PCT Pub. Date Jan. 29, 1998The present invention concerns an LED spectrometer operating without moving parts according to the sweep principle, and appropriate to serve as a structural component in many kinds of spectroscopic concentration analyzers. The design of the invention affords the advantage that, even at its minimum, the optical power of the LED spectrometer of the invention is about fivefold compared with the designs of prior art. Furthermore, improvement of the efficiency of the LED radiation source and of that of the optics has brought a multiple augmentation in power to the wavelength spectrum sent out by the radiation source. In the design of the invention, concentrators (6) of non-imaging type are used to collimate the wavelength spectrum emitted by the LEDs (3). |
