A toroidal heliostat and reflector frame for a heliostat are provided which passively adjust the apparent sagittal and/or tangential focal lengths of the reflector. This adjustment is provided by way of passive deflection of the reflector caused by one or more of gravitationally-induced deflection of one or more components of the heliostat; differential thermal expansion of materials of the heliostat; and/or relative movement between two or more components of the heliostat. Careful design of the heliostat enables optimisation of the power delivery profile and/or shape of the reflected image throughout the day.
申请公布号
US2014043705(A1)
申请公布日期
2014.02.13
申请号
US201214111057
申请日期
2012.04.13
申请人
LEHMANN ALEX GEOFFREY;ALLENSPACH PETER RICHARD;HELIOSYSTEMS PTY LTD.