Unlock instant, AI-driven research and patent intelligence for your innovation.

A method for adjusting the optical path according to the imaging size of the LED display module

A display module and imaging technology, applied in identification devices, instruments, etc., can solve problems such as insufficient accuracy, slow correction speed, and large space occupation, and achieve the effect of improving detection accuracy

Active Publication Date: 2020-04-14
XIAN NOVASTAR TECH
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that this correction method has the following disadvantages: 1) Manual adjustment is required for manual intervention; 2) Large darkroom support is required, which takes up a lot of space; and 3) The correction speed is slow
However, if the optical path of the automatic running water detection system is a fixed length and the length does not support expansion and contraction, if the LED light board or LED box is small when collecting images, then the imaging of the LED light board or LED box in the camera imaging Fewer components will lead to insufficient accuracy, so that the brightness in the collected image cannot truly reflect the real brightness value of the LED light board or LED box, resulting in possible detection failures

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A method for adjusting the optical path according to the imaging size of the LED display module
  • A method for adjusting the optical path according to the imaging size of the LED display module
  • A method for adjusting the optical path according to the imaging size of the LED display module

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0026] First use the detection software installed in the control computer to connect the optical path control system and the camera 14 (that is, a kind of image acquisition device), and place the LED display module 100 in the detection optical path (here the LED display module 100 can be controlled by a mechanical arm. Placed in the detection optical path, or placed in the detection optical path by manual operation) and lighted, then the detection software opens a window to display the real-time image collected by the current camera 14; the real-time image here is for example output by the control computer to connect with it displayed on the display.

[0027] exist figure 1 In the shown detection optical path, mirrors 11, 12, 13 and image acquisition equipment such as camera 14 are provided, and the optical path length of the detection optical path is AB+BC+CD+DE. also, figure 1 Adjusting the length from A to E becomes larger, which is to elongate the optical path (that is, ...

no. 2 example

[0031] First utilize the detection software installed in the control computer to connect the optical path control system and the camera 34, place the LED display module 100 in the detection optical path and light it up, then the detection software opens a window to display the real-time acquisition image of the current camera 34; The collected images are output to a monitor connected to the control computer for display, for example.

[0032] exist image 3 In the shown detection optical path, mirrors 31 , 32 , 33 and image acquisition equipment such as a camera 34 are provided, and the optical path of the detection optical path is AB+BC+CD+DE. also, image 3 Adjusting the length from A to E becomes larger to elongate the optical path; adjusting the length from A to E to become smaller means shortening the optical path. As for the extension or shortening of the optical path, the control command can be generated by the detection software to control the optical path control sys...

no. 3 example

[0043] The method of automatically judging the imaging size of the LED display module in the real-time image captured by the camera and the automatic optical path adjustment method proposed in the third embodiment of the present invention is applicable to the aforementioned figure 1 , figure 2 and image 3 The automatic running water detection system shown. Specifically, in the third embodiment, the method of automatically judging the imaging size of the LED display module in the real-time captured image by the camera and automatically adjusting the optical distance is as follows:

[0044] Assuming that the camera focal length F is 100mm, the size of camera imaging components (such as CCD size) is M*N (M≥N), and the physical size of the LED display module is X*Y (X≤Y), then:

[0045] The optical distance target value D / camera focal length F=Y / (N*th) from the camera to the LED display module, where the value of th is preferably in the range [0.8,0.9], which means that the im...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention brings forward a method for adjusting an optical path according to the imaging size of an LED display module. The method is applied to an automatic water detection system including a detection optical path and an optical path control system. The detection optical path is provided with multiple reflection mirrors and image collection equipment. The optical path control system comprises an optical path telescopically-performing mechanism which is used for driving one or more reflection mirror motions of the reflection mirrors. The method put forward by the invention analyzes the LED display module by analyzing data of real-time collection images of the image collection equipment, such as a camera. Such analyses comprise the imaging sizes of an LED box body or an LED lamp board.According to the imaging size, the optical path is adjusted to stretch out and draw back. Therefore, the optical path from the image collection equipment to the LED display module is finished adjusting. The imaging size of the LED display module reaches the proper size. Therefore, detection accuracy, such as brightness and / or chromaticity detection accuracy, of the overall automatic water detection system is further improved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a method for adjusting the optical distance according to the imaging size of an LED display module. Background technique [0002] Since the 21st century, the color display industry has achieved unprecedented development, and LED display screens have almost spread all over the city's central squares and commercial buildings. LED display is highly praised by people for its unique advantages of bright colors, high visibility, and low power consumption, so the order volume of LED display manufacturers will be greatly increased. However, even the same batch of LED lights will have Certain brightness differences, chromaticity differences and broken lights, if spliced ​​into LED light boards or LED cabinets, you will find that the LED light boards or LED cabinets are uneven or some light points are dark spots. For LED display manufacturers, they don't want the above situation to still...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G09F9/33
Inventor 殷雷杨城
Owner XIAN NOVASTAR TECH