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Title: Development and evaluation of an improved efficiency polymeric web point-focus Fresnel lens

Abstract

The feasibility of producing parquets of point-focus Fresnel lenses with a 2/sup 0/ draft angle on the riser in a continuous polymeric web is described. The parquet produced consisted of 14 square lenses, each 8.16 in. on a side, in a 2 by 7 format. The primary aim was to show that an increased efficiency was possible over that reported in SAND83-7023 by decreasing the draft angle. A secondary aim was also to produce a web of sufficient thickness to be used without lamination to a thick superstrate. The results demonstrated that increased efficiency was realized for both the thin and thick caliper material, with performance nearly equal to a direct-cut control lens. The results also show that a bowing or sagging problem exists in the laminated lenses. They also show that the thicker, non-laminated lenses may not be stiff enough to lie flat and may buckle, causing these lenses to be potentially unacceptable.

Authors:
Publication Date:
Research Org.:
Minnesota Mining and Mfg. Co., St. Paul (USA). Optics Technology Center
OSTI Identifier:
6888844
Report Number(s):
SAND-86-7046
ON: DE87008887
DOE Contract Number:  
AC04-76DP00789
Resource Type:
Technical Report
Resource Relation:
Other Information: Portions of this document are illegible in microfiche products. Original copy available until stock is exhausted
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; FRESNEL LENS; DESIGN; EVALUATION; COST; PERFORMANCE TESTING; LENSES; TESTING; 141000* - Solar Collectors & Concentrators

Citation Formats

Cobb, S Jr. Development and evaluation of an improved efficiency polymeric web point-focus Fresnel lens. United States: N. p., 1987. Web.
Cobb, S Jr. Development and evaluation of an improved efficiency polymeric web point-focus Fresnel lens. United States.
Cobb, S Jr. 1987. "Development and evaluation of an improved efficiency polymeric web point-focus Fresnel lens". United States.
@article{osti_6888844,
title = {Development and evaluation of an improved efficiency polymeric web point-focus Fresnel lens},
author = {Cobb, S Jr},
abstractNote = {The feasibility of producing parquets of point-focus Fresnel lenses with a 2/sup 0/ draft angle on the riser in a continuous polymeric web is described. The parquet produced consisted of 14 square lenses, each 8.16 in. on a side, in a 2 by 7 format. The primary aim was to show that an increased efficiency was possible over that reported in SAND83-7023 by decreasing the draft angle. A secondary aim was also to produce a web of sufficient thickness to be used without lamination to a thick superstrate. The results demonstrated that increased efficiency was realized for both the thin and thick caliper material, with performance nearly equal to a direct-cut control lens. The results also show that a bowing or sagging problem exists in the laminated lenses. They also show that the thicker, non-laminated lenses may not be stiff enough to lie flat and may buckle, causing these lenses to be potentially unacceptable.},
doi = {},
url = {https://www.osti.gov/biblio/6888844}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Apr 01 00:00:00 EST 1987},
month = {Wed Apr 01 00:00:00 EST 1987}
}

Technical Report:
Other availability
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