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Method and device for automatic on-line measurement of optical sheet warp

An optical thin plate and automatic measurement technology, applied to measuring devices, optical devices, instruments, etc., can solve problems such as poor quality control, manufacturing cost burden, waste of manpower, etc., to improve quality control capabilities and production capacity, and reduce manufacturing costs , The effect of increasing the measurement speed

Inactive Publication Date: 2006-04-26
OPTIMAX TECHNOLOGY CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this traditional manual measurement method is inconvenient, and the accuracy is very low, and it is easy to cause poor quality control problems due to measurement errors
Furthermore, the measurement time of manual measurement is very long, which not only slows down the production speed of optical thin plates, but also wastes manpower, causing a burden on manufacturing costs

Method used

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  • Method and device for automatic on-line measurement of optical sheet warp
  • Method and device for automatic on-line measurement of optical sheet warp

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Embodiment Construction

[0034] figure 1 A schematic diagram showing a preferred embodiment of the present invention. Such as figure 1 As shown, an optical sheet 110 , such as a polarizer, is moving on the conveyor belt 102 . In this preferred embodiment, at least one measuring light beam 104 is set on the conveyor belt 102 , and when the moving optical thin plate 110 blocks the measuring light beam 104 , it is determined that the optical thin plate 110 is warped. Since the conveyor belt 102 can be easily integrated into the known optical sheet manufacturing process, the device and method of this preferred embodiment can measure whether the optical sheet 110 is warped in real time on the production line.

[0035] In the preferred embodiment, the measurement beam 104 is generated by the light source 114 and received by the detector 124 . The light source 114 can be a laser light source or a common light source, such as helium-neon laser, diode laser, halogen lamp or other wavelengths of light that c...

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Abstract

The invention discloses an on-line self-measuring optical sheet curl method and device, which is characterized by the following: selecting moving optical sheet through conveyer; setting more than one measured light beam on the conveyer; judging the curl of optical sheet when the optical sheet shields the measured light beam. The invention improves the measuring accuracy, which accelerates the measuring speed greatly.

Description

technical field [0001] The invention relates to a manufacturing process and a quality control method of an optical thin plate, and in particular to a method and device for measuring the warpage of an optical thin plate that can be measured online in real time and that is easy to automate. Background technique [0002] Liquid crystal displays have the advantages of high image quality, small size, light weight, low voltage drive, low power consumption, and wide application range. Therefore, it is widely used in consumer electronics or computer products such as medium and small portable TVs, mobile phones, video recorders, notebook computers, desktop monitors, and projection TVs, and has gradually replaced cathode ray tubes ( cathode ray tube, CRT) has become the mainstream of the display. [0003] In liquid crystal displays, polarizers are one of the main components of liquid crystal panels. The polarizing plate can be composed of one or more optical thin plates, and besides...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/16G02F1/133
Inventor 陈志忠王伯萍李韦彦杨志浩
Owner OPTIMAX TECHNOLOGY CORPORATION
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