CN217560918U

CN217560918U - Quick measurement system for polaroid absorption axis

Info

Publication number: CN217560918U
Application number: CN202221270953.6U
Authority: CN
Inventors: 欧海宏; 卢坤; 林文华; 雷国韬
Original assignee: Shenzhen Jingchuang Technology Co ltd
Current assignee: Shenzhen Jingchuang Technology Co ltd
Priority date: 2022-05-25
Filing date: 2022-05-25
Publication date: 2022-10-11
Anticipated expiration: 2032-05-25

Abstract

The invention provides a quick measurement system for a polarizer absorption axis, which comprises a fixed connection module, an optical module and a data processing module, wherein the fixed connection module is used for fixing and connecting the optical module and the data processing module or fixing and connecting the internal structure of the optical module, and is characterized in that: the optical module sequentially comprises a light source, a collimating lens, a depolarizer, a multi-point analyzer and a receiver along the light path direction, the region between the depolarizer and the multi-point analyzer is a product detection region, and the receiver is electrically connected with the data processing module and used for collecting and processing the measurement data of the system. The measurement of quick online polaroid absorption axis can be realized, the operation is simple, the measurement personnel and the measurement environment have no high requirements, and the measurement is convenient and practical.

Description

Quick measurement system for polaroid absorption axis

Technical Field

The invention belongs to the field of optical detection, and particularly relates to a rapid measurement system for an absorption axis of a polarizer.

Background

The polaroid is an important optical film, mainly apply to the display of the electronic product, each liquid crystal display needs to use upper and lower 2 polaroids, the lower polaroid is used for changing the light beam that the backlight produces into the polarized light, the upper polaroid is used for analyzing the polarized light after the liquid crystal electricity is modulated, produce the contrast of light and shade, thus produce and display the picture, as the important component part of the display, know the absorption axis of the polaroid is a very important link, because need know the accurate absorption axis angle can confirm the direction of cutting, if the angle measurement of absorption axis is inaccurate, cause and cut the direction mistake, will influence the performance of the optical film greatly, will cause the picture of the display to be grey dark, fuzzy, even there is no picture to display seriously.

At present, the measurement of the absorption axis of the polarizer is to arrange a rotatable polarizer in front of a polarizer product to be measured, continuously collect photoelectric signals transmitted into the polarizer to be measured through the rotatable polarizer and then transmitted out, and obtain the absorption axis of the polarizer to be measured according to the characteristics of the polarizer. This measurement system is because set up rotatable polarizer, and the structure is complicated, and the cost is higher, and the time spent of the measurement process of rotatory polarizer moreover, and a slice polaroid measuring time is then ten seconds less, then tens seconds more, and different absorption axis angle measuring time is different, the phase difference is great, and overall efficiency is low, is unsuitable to be used in volume production line or examine the product that awaits measuring entirely.

Disclosure of Invention

In view of the above, the utility model provides a quick measurement system of polaroid absorption axis can realize the measurement of quick online polaroid absorption axis, and easy operation does not have very high requirement, convenient and practical to survey crew and measurement environment.

The specific technical scheme is as follows:

the utility model provides a quick measurement system of polaroid absorption axis, includes fixed connection module, optical module and data processing module, and fixed connection module is used for fixed, connection optical module and data processing module, its characterized in that: the optical module sequentially comprises a light source, a collimating lens, a depolarizer, a multi-point polarization analyzer and a receiver along the light path direction, the region between the depolarizer and the multi-point polarization analyzer is a product detection region, and the receiver is electrically connected with the data processing module and used for collecting and processing measurement data.

Further, the multi-point analyzer is formed by combining a plurality of single-point analyzer plates with different absorption axes.

Further, the multipoint polarization analyzer comprises three polarization analyzing sheets with different absorption axes, the polarization analyzing sheets are spliced on the same plane, and the three polarization analyzing sheets can simultaneously receive the light emitted by the polarized light product to be detected.

Furthermore, the receiver is a multi-point photoelectric detector and can simultaneously receive the optical signals transmitted by the multi-point analyzer and convert the optical signals into electric signals reflecting the light energy.

The utility model discloses a polaroid absorption axis rapid survey system, can once only acquire a plurality of light intensity values behind specific known absorption axis contained angle through the design of multiple spot analyzer, can calculate the relation of the absorption axis of analyzer piece and the contained angle of measured polaroid absorption axis according to a plurality of light intensity value data processing module that obtain, because the absorption axis of analyzer piece is known in the multiple spot analyzer, reachs the absorption axis of measured polaroid that so just can be quick, can realize accomplishing the measurement in one second, and the absorption axis angle measuring time of difference is the same. The system simplifies the structure of the original rotary driving polarizer, does not need to use any rotating mechanism for measurement, eliminates the influence of the rotating mechanism on the measurement effect, simplifies the measurement process, optimizes the structure of the prior art, saves the cost, does not need excessive operation, is convenient to use, and can obtain the beneficial effect of improving the measurement efficiency of the single-chip polaroid, thereby being more beneficial to the use in industrial production and having important popularization significance.

Additional aspects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic diagram illustrating a position structure of an optical module in a polarizer absorption axis rapid measurement system:

FIG. 2 is a schematic diagram of the internal components of the multi-point analyzer;

the system comprises a light source 1, a collimating lens 2, a depolarizer 3, a polarizer to be measured 4, a multi-point analyzer 5, a receiver 6, a data processing module 7, a first analyzer 8, a second analyzer 9 and a third analyzer 10.

Detailed Description

The embodiments described below with reference to the drawings are illustrative only and should not be construed as limiting the invention.

The quick measurement system for the absorption axis of the polarizer of the embodiment comprises a fixed connection module, an optical module and a data processing module, wherein the fixed connection module is used for fixing and connecting the optical module and the data processing module or is used for fixing and connecting the internal structure of the optical module, the fixed connection module is a connecting piece playing a fixing role in the prior art, such as a circuit for connecting the optical module and the data processing module, a fixing support of an optical device and the like, and for technical personnel in the field, the above description is omitted and the understanding of the technical scheme is not influenced.

Referring to fig. 1, the optical module of this embodiment sequentially includes a light source 1, a collimating lens 2, a depolarizer 3, a multi-point analyzer 5, and a receiver 6 along a light path direction, where the light source 1 is a white LED light source and emits system incident light. The collimator lens 2 converts the divergent light rays of the light source 1 into collimated light. The depolarizer 3 converts the collimated light into completely unpolarized light, eliminating the polarized light doped in the light source, so as not to affect the final measurement result. The area between the depolarizer 3 and the multipoint analyzer 5 is a product detection area, the measured polarizer 4 is placed in the area during measurement, completely unpolarized light emitted by the depolarizer 3 penetrates through the measured polarizer 4 and then enters the multipoint analyzer 5, the receiver 6 is a multipoint photoelectric detector and can simultaneously receive optical signals transmitted by the multipoint analyzer 5 and convert the optical signals into a plurality of electric signals reflecting the light energy, the receiver 6 is electrically connected with the data processing module 7, and the data processing module 7 calculates and converts light intensity signals collected by the receiver 6 to obtain a measurement result.

The multi-point analyzer 5 of the present embodiment is a plurality of different analyzersThe single-point polarization analyzer with absorption axes is combined, referring to fig. 2, the multi-point polarization analyzer 5 comprises three polarizing films with different absorption axes, namely a first polarization analyzer 8, a second polarization analyzer 9 and a third polarization analyzer 10 which are spliced on the same plane, the three polarizing films have specific absorption axes and can simultaneously receive light rays emitted by a to-be-detected polarized light product 4 to generate three corresponding specific light intensity values. Setting the first analyzer 8 as the reference analyzer, and the included angle between the measured polarizer 4 and the absorption axis of the reference analyzer is

The first analyzer plate 8 and the reference analyzer plate form an absorption axis included angle

The second analyzer plate 9 and the reference analyzer plate form an absorption axis included angle

The third analyzer plate 10 and the reference analyzer plate form an absorption axis included angle

The receiver 6 correspondingly receives the optical signals transmitted by the multi-point analyzer and converts the optical signals into a plurality of electrical signals reflecting the light energy

The receiver 6 transmits the data to the data processing module 7 to perform calculation conversion on the data, the calculation is performed by using a Jones matrix and a Jones vector according to the single-point polarization characteristics in the multi-point analyzer 5, and the included angle between the polarizer 4 to be measured and the absorption axis of the reference analyzer is obtained by combining a photometric formula

And because the absorption axis of the reference analyzer is known, the absorption axis of the measured polarizer can be quickly obtained.

It should be clear that, in this embodiment, the data processing module 7 may be a general-purpose computer with data processing software, or a dedicated data processor, which is not described herein again and does not affect understanding of the present application.

While specific embodiments of the invention have been described in detail with reference to exemplary embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this invention. In particular, reasonable variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the foregoing disclosure, the drawings and the appended claims without departing from the spirit of the invention. Except variations and modifications in the component parts and/or arrangements, the scope of which is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a quick measurement system of polaroid absorption axis, includes fixed connection module, optical module and data processing module, and fixed connection module is used for fixed, connects optical module and data processing module, its characterized in that: the optical module sequentially comprises a light source, a collimating lens, a depolarizer, a multi-point polarization analyzer and a receiver along the light path direction, the region between the depolarizer and the multi-point polarization analyzer is a product detection region, and the receiver is electrically connected with the data processing module and used for collecting and processing measurement data.

2. The polarizer absorption axis rapid measurement system of claim 1, wherein the multi-point analyzer is a combination of single-point analyzers with different absorption axes.

3. The system of claim 2, wherein the multi-point analyzer comprises three analyzers with different absorption axes, which are spliced and arranged on the same plane, and the three analyzers can simultaneously receive light emitted from a polarized product to be measured.

4. The polarizer absorption axis rapid measurement system according to any of claims 1 to 3, wherein the receiver is a multi-point photodetector, and is capable of simultaneously receiving the optical signal transmitted from the multi-point analyzer and converting the optical signal into an electrical signal reflecting the amount of light energy.