Abstract

The terrestrial solar irradiance is evaluated in view of the energy absorbed by the retina and the blue light hazard. The evaluated irradiance is compared with the known safety standard, to determine the safety requirement of solar eclipse observation devices. Simple devices are then proposed. The first is a folded pinhole camera, giving a magnified sun image from a relatively small box. The second is a pinhole projector, used to display the image in a large room, while the third is a compact multimirror periscope enabling one to see the sun sharper than with a pinhole camera.

© 1989 Optical Society of America

Spatiotemporal change of sky polarization during the total solar eclipse on 29 March 2006 in Turkey: polarization patterns of the eclipsed sky observed by full-sky imaging polarimetry

Brigitta Sipoćz, Ramón Hegedüs, György Kriska, and Gábor Horváth
Appl. Opt. 47(34) H1-H10 (2008)

The Deflection of Light as Observed at Total Solar Eclipses

Charles Lane Poor
J. Opt. Soc. Am. 20(4) 173-211 (1930)

Eclipse Instrumentation for the Solar Corona

D. H. Menzel and J. M. Pasachoff
Appl. Opt. 9(12) 2626-2630 (1970)

Detection of polarization neutral points in observations of the combined corona and sky during the 21 August 2017 total solar eclipse

Frans Snik, Steven P. Bos, Stefanie A. Brackenhoff, David S. Doelman, Emiel H. Por, Felix Bettonvil, Michiel Rodenhuis, Dmitry Vorobiev, Laura M. Eshelman, and Joseph A. Shaw
Appl. Opt. 59(21) F71-F77 (2020)

Ocular Hazard from Viewing the Sun Unprotected and Through Various Windows and Filters

W. T. Ham, H. A. Mueller, R. C. Williams, and W. J. Geeraets
Appl. Opt. 12(9) 2122-2129 (1973)