Physics – Optics
Scientific paper
Feb 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apopt..25..537h&link_type=abstract
Applied Optics (ISSN 0003-6935), vol. 25, Feb. 15, 1986, p. 537-539.
Physics
Optics
1
Far Infrared Radiation, Geometrical Optics, Infrared Photometry, Submillimeter Waves, Concentrators, Heat Sinks, Hyperbolic Functions, Lens Design
Scientific paper
The present paper is concerned with the severe truncation of a compound hyperbolic concentrator (CHC) to produce a subcompact heat trap, taking into account the adoption of a purely empirical approach and the conduction of a series of tests in which the performance of a CHC heat trap was measured after successive truncations. It is found that a CHC collector can be truncated to about half of the full length without significant loss in performance. Since the mass varies approximately with the square of the length, considerable advantages can be obtained in some applications. A description is given of a version of the compound elliptic concentrator which produces an ultracompact heat trap. A brief outline of a new technique for the manufacture of the small light collectors used in submillimeter photometers is also provided.
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