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US 2019/0169928 A1Published application
Photosensitive element assembly
AssigneeLutron Electronics Co., Inc.
InventorsEdward J. Blair, Stephen Lundy, Brandon L. Szoke, David A. Kirby
Life of this patent
Estimating the term…
Abstract
A sensor assembly comprises a housing having a major face and a side edge. The side edge is formed of a material that is capable of conducting light. A photosensitive element is positioned within the housing and facing the major face of the housing. A reflector is positioned within the housing. The reflector is shaped to direct light entering through the side edge onto the photosensitive element.
Claims23
A controller for use in a load control system for controlling an electrical load, the controller comprising:
- a processor configured to:
- combine a first sensor signal and a second sensor signal from at least a first sensor assembly and a second sensor assembly, respectively, the first and second sensor signals representing light levels at a window, the first and second sensor assemblies oriented so that the first sensor assembly has a maximum response to light entering a housing of the first sensor assembly at a first angle with respect to a normal of a plane of the window and the second sensor assembly has a maximum response to light entering a housing of the second sensor assembly at a second angle with respect to the normal of the plane of the window;
- and
- transmit a command to automatically control the electrical load based on the combined first and second sensor signals
1 more element
A system comprising:
- at least one motorized window treatment positioned adjacent to at least one window on a façade of a building, the at least one motorized window treatment having a motor drive unit for varying a position of the at least one window treatment;
- at least a first sensor assembly and a second sensor assembly for generating respective first and second sensor signals representing light levels at the at least one window, the first and second sensor assemblies oriented so that the first sensor assembly has a first field of view, the second sensor assembly has a second field of view different from the first field of view, and the first and second fields of view are symmetric about a direction normal to a major face of the at least one window;
- and
- a controller configured to combine a first sensor signal from the first sensor assembly and a second sensor signal from the second sensor assembly, and to transmit to the motor drive unit a command to automatically adjust a position of the at least one window treatment based on the combined first and second sensor signals.
1 more element
Dependencies are inferred from the claim text.