Production method of television line diagram for testing photoelectronic imaging system resolution power

Abstract

The invention relates to a method for manufacturing a television line chart for testing the resolving power of a photoelectronic imaging system. The manufacturing method comprises the following steps: gathering parameters for manufacturing the chart, and calculating the optimal focusing distance; calculating the line pair length of the possible measuring range of the optical system according to the parameters; filming the manufactured line pair with an optical imaging system to be tested, and taking 80% of the ultimate resolution line pair as the basis; testing whether the resolving limit of the filming area falls in the line pair, and if yes, measuring the size of the chart in the focusing position; and determining the optimal line pair combination in all the areas for manufacturing the chart. Compared with the prior art, the invention has the following advantages: the resolving power of the optical system to be tested can be subjected to a quantitative test; the universality is good; the problem that the focusing distance is limited by the size of the chart is solved; the cost is low; the imaging conditions of the testing areas can be reflected more clearly; the invention can not be limited by the number of pixels or the definition; and with the Chart information, the invention is more suitable for mass production.

Description

technical field [0001] The invention relates to a test and performance detection method of a photoelectric imaging device, in particular to a method for making a TVL chart for testing the resolution of a photoelectric imaging system. Background technique [0002] In today's era, photoelectric imaging instruments such as digital cameras, mobile phone cameras, industrial and medical endoscopes have been widely used in people's lives. The testing and performance testing of photoelectric imaging instruments has become very important in the design and production. The present invention primarily arose in response to this need. The existing test charts are mainly made for 36mm film and 50mm traditional standard lens. For the current dazzling array of optoelectronic imaging systems, some places can be tested qualitatively, but not quantitatively. The existing international charts for detecting resolution include: EIA 1956 resolution chart, ISO12233 Resolution chart, IEEE resoluti...

AI Technical Summary

Problems solved by technology

[0004] (2) Cannot meet the needs of focusing

For a chart with a relatively specified size, if the focus distance is met, it cannot be satisfied to just see all the contents of the Chart; just to see all the contents of the Chart cannot meet the focus distance;

[0005] (3) The cost of dedicated Chart is high;

[0006] (4) It cannot accurately represent the imaging situation of the same field of view

In the original Chart, the horizontal and vertical lines in the same part are too far apart, which cannot clearly indicate the imaging conditions of the meridian image field and arc aberration field in the same area;

[0007] (5) It cannot meet the needs of higher and higher pixels

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