Wire pair testing drawing board, lens optical parsing and measuring system and measuring method thereof

Abstract

The invention provides a test line pair drawing board which is provided with a bold frame-shaped pattern and a plurality of test line pair figures, wherein, the bold frame-shaped pattern is centrally symmetrical about the entire test line pair drawing board, and the test line pair figures are positioned within the bold frame-shaped pattern. The invention also provides a lens optical analysis and measurement system including the test line pair drawing board, a light source, an image sensor, a processing device and a display device, wherein, a lens is corresponding the test line pair drawing board to be measured; the light source is used for emitting light to irradiate the test line pair drawing board; the image sensor is used for receiving an optical signal that the light reflected by the test line pair drawing board penetrates through the lens to be measured and for converting the optical signal into an electric signal; the processing device is used for receiving the electric signal from the image sensor and converting the electric signal into a digital signal to calculate and output brightness distribution data and optical analysis modulation and conversion function values; and the display device is used for receiving and displaying the output brightness distribution data and optical analysis modulation and conversion function values. The invention also provides an optical analysis measurement method for the lens.

Description

technical field [0001] The invention relates to a test line pair diagram board for measuring the optical resolution capability of a lens, and relates to a lens optical resolution measurement system and a measurement method thereof. Background technique [0002] A camera module usually includes at least one lens and an image sensor opposite to the lens, and is widely used in camera devices for various purposes. The camera module is built into various portable electronic devices, such as mobile phones, video cameras Machines and computers are favored by many consumers. [0003] The measurement of the optical resolution capability of the lens is usually completed by a lens optical resolution measurement system. The working principle of the lens optical analysis measurement system is to use digital image processing to directly calculate the physical optical analysis Modulation Transfer Function (MTF) to characterize the optical analysis capability of the lens. Such as Figure ...

AI Technical Summary

Problems solved by technology

[0004] However, since the optical axis of the lens is often difficult to determine accurately, especially as the size of the lens becomes smaller and smaller, it is more difficult to determine the optical axis of the lens.

Existing lens optical analysis measurement systems and their measurement methods often fail to identify or are difficult to identify whether the optical axis of the lens to be tested coincides with the central axis of the image sensor

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