Abstract:
Disclosed herein is a method comprising acquiring an image of a display film or a mold with a camera; transferring the image to a computer; detecting an angle of alignment and/or a position of the display film or the mold from the image; detecting coordinates of defects located in the display film or the mold; and correcting the coordinates of the defects by compensating for the angle of alignment and/or the position of the display film or the mold.
Abstract:
A system and a method for detecting defects in a light-management film are provided. The system includes a first light source configured to emit light onto a first side of the film in a first predetermined region of the film. The system further includes a second light source configured to emit light onto a second side of the film in the first predetermined region of the film. The system further includes a first camera configured to receive a first portion of light reflected from the first predetermined region of film from the first light source and a second portion of the light propagating through the film from the second light source. Finally, the system includes a signal-processing device operably coupled to the first camera configured to detect a defect in the first predetermined region of the film based on at least one of the first and second portions of light.
Abstract:
A method of making a hologram includes recording a first hologram in a holographic recording medium at a first deformation ratio; changing the first deformation ratio to a second deformation ratio that is different from the first deformation ratio; and recording a second hologram in the holographic recording medium at the second deformation ratio to form a recorded holographic medium.
Abstract:
A system for the inspection of and a process for the correction of defects in a microreplicated optical display film manufacturing process. The process steps of manufacturing a master, a plurality of shims from the master, and a multiplicity of display films from each shim are integrated with a systemic defect identification and correction process. Each primary manufacturing step has its own inspection system and correction process where defect information for that step of the process is fed back and analyzed; and from that analysis the subprocess is adjusted to eliminate or reduce the detected defect. The systemic defect is identified as to its source and then fed back and analyzed in the correction step of the respective subprocess in order to cure the root of the defect.
Abstract:
Disclosed herein is a method comprising inspecting a mold for a defect; determining a type of defect present on the mold; sorting the mold by type of defect present; treating the mold with a cleaning process that is suitable to remove the defect; and pressing the mold against a polymeric film to produce a series of defect free light management films; wherein the yield of light management films manufactured from the mold is higher than the yield of light management films that are produced from a comparative mold that has not been treated with the cleaning process.
Abstract:
A system and a method for detecting defects in a light-management film are provided. The system includes a first light source configured to emit light onto a first side of the film in a first predetermined region of the film. The system further includes a second light source configured to emit light onto a second side of the film in the first predetermined region of the film. The system further includes a first camera configured to receive a first portion of light reflected from the first predetermined region of film from the first light source and a second portion of the light propagating through the film from the second light source. Finally, the system includes a signal-processing device operably coupled to the first camera configured to detect a defect in the first predetermined region of the film based on at least one of the first and second portions of light.