Abstract:
A method for accurate determination of optical parameters of a stack of thin films with at least one of the films being an opaque film. The method includes measurement of the reflected or transmitted through the stack illumination and mutual correlation of the determined thin film parameters.
Abstract:
A method for measuring characteristics of a stack of thin films including at least one thin film being an absorbing film. The measurement takes place in determined measurement locations utilizing existing and specially introduced photovoltaic panel features.
Abstract:
Presented is a system for thin film photovoltaic panel quality control in a batch manufacturing process. The system includes a panel illuminating unit, a detector unit, a robotic mechanism handling the panel and providing a relative displacement between the panel and the panel illuminating unit and illumination detector unit. A control unit is operative to coordinate the quality control process with movements of at least the robotic mechanism, process at least one detected illumination thin film interaction product and derive at least one thin film parameter.
Abstract:
A method for accurate determination of optical parameters of a stack of thin films with at least one of the films being an opaque film. The method includes measurement of the reflected or transmitted through the stack illumination and mutual correlation of the determined thin film parameters.
Abstract:
A method of a photovoltaic panel (104) quality control, said method comprising: enabling a relative movement in at least one direction (112) between the photovoltaic panel (104) and a low-resolution scanning imaging unit (132) and capturing successive two-dimensional frames of the scanned area; analyzing the aquired image frames for presence of thin film production defects (144) and communicating to a high resolution image scanning unit (136) locations of said production defects; enabling a relative movement (148) between the photovoltaic panel and the high resolution scanning unit said, movement following the low-resolution unit movement and at least one additional direction parallel to the photovoltaic panel movement direction to aquire and classify the thin film production defects communicated by the low resolution scanning unit; and wherein the low and high resolution scanning units move simultaneously with the same speed (124) across the photovoltaic panel and the speed of the high resolution scanning unit moving in the direction parallel to the thin film movement direction is different from the speed at which the photovoltaic panel moves.
Abstract:
A system and a method for photovoltaic thin film quality control. The system illuminates an area of photovoltaic film, acquires the illuminated area and compares it with a predetermined image. The difference between the images indicates on presence of photovoltaic thin film defects.
Abstract:
A system and a method for photo voltaic thin film quality control The system illuminates an area of photo voltaic film, acquires the illuminated area and compares it with a predetermined image The difference between the images indicates on presence of photo voltaic thin film defects.
Abstract:
Photovoltaic thin film quality control is obtained where the thin film is supported by a support and a section of the film is illuminated by a polychromatic illumination source. The source forms on the thin film a continuous illuminated line. Discrete sampled points located on the illuminated line are imaged onto a two dimensional optical switch. A concordance look-up-table between the coordinates of the above sampled points on the thin film and their coordinates on the two dimensional optical switch are generated. The spectral composition of the illumination reflected by the sampled points is determined and photovoltaic thin film parameters applicable to the quality control are derived from the spectral composition of reflected or transmitted by the photovoltaic thin film illumination.
Abstract:
Photovoltaic thin film quality control is obtained where the thin film is supported by a support and a section of the film is illuminated by a polychromatic illumination source. The source forms on the thin film a continuous illuminated line. Discrete sampled points located on the illuminated line are imaged onto a two dimensional optical switch. A concordance look-up-table between the coordinates of the above sampled points on the thin film and their coordinates on the two dimensional optical switch are generated. The spectral composition of the illumination reflected by the sampled points is determined and photovoltaic thin film parameters applicable to the quality control are derived from the spectral composition of reflected or transmitted by the photovoltaic thin film illumination.
Abstract:
Presented is a system for thin film photovoltaic panel quality control in a batch manufacturing process. The system includes a panel illuminating unit, a detector unit, a robotic mechanism handling the panel and providing a relative displacement between the panel and the panel illuminating unit and illumination detector unit. A control unit is operative to coordinate the quality control process with movements of at least the robotic mechanism, process at least one detected illumination thin film interaction product and derive at least one thin film parameter.