An automatic focusing electronic eyepiece and system

An electronic eyepiece and automatic focusing technology, which is applied to the parts of the TV system, TV, electrical components, etc., can solve the problems that the observed image cannot be digitally processed, and the eyepiece cannot be automatically focused, so as to achieve the best image effect, convenient analysis and The effect of tracking and improving focus efficiency

Active Publication Date: 2019-03-19
TAGYE TECH HANGZHOU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the object of the present invention is to provide an automatic focusing electronic eyepiece, which is used to solve the technical problems that the existing eyepiece cannot be automatically focused, and the corresponding observation image cannot be further digitally processed.

Method used

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  • An automatic focusing electronic eyepiece and system
  • An automatic focusing electronic eyepiece and system
  • An automatic focusing electronic eyepiece and system

Examples

Experimental program
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Effect test

Embodiment 1

[0049] Such as figure 1 As shown, the traditional eyepiece magnifies the real image formed by the objective lens again, so as to form a clear virtual image at the distance of clear vision. This kind of eyepiece can only be used for observation, and cannot be used for image analysis and storage. The electronic eyepiece makes up for this defect very well. figure 2 The working principle of the electronic eyepiece shown. Although the electronic eyepiece converts the traditional optical signal into a digital signal and realizes the analysis and preservation of the image, it lacks the automatic focusing function. The present invention realizes automatic focusing by moving the focusing lens group in the electronic eyepiece to change the image distance through electromechanical control, such as image 3 . This embodiment adopts implementation mode as follows:

[0050] according to figure 1 , figure 2 , Figure 4 The schematic diagram shown shows that whether it is an eyepiece...

Embodiment approach

[0076] In the above focusing process, through the real-time collection of the original image of the target to be measured through the focusing lens group 22b, multiple sets of image data are obtained through the image data processing unit 246a, and multiple sets of image data are obtained through the focus value calculation unit 246b. value, the focus algorithm unit 247c selects an appropriate value as the focus evaluation value according to multiple sets of focus values ​​and thresholds, and after two stages of coarse focus and fine focus, different step lengths are used in different stages to control the focus speed and focus of the motor. Accuracy, in the coarse focus stage, through the analysis of the focus value, take a large step to quickly focus, find the area where the best focus value is located, and drive the focusing lens group 22b to move to a certain reference position within the area of ​​the best focus value ; In the fine focus stage, find the best clear point th...

Embodiment 2

[0117] The working distance of the traditional eyepiece is fixed, if the height of the measured object changes, the image will be unclear.

[0118] Such as image 3 and Figure 6 As shown, the difference between this embodiment and the traditional eyepiece is that the working distance w is variable. According to the optical imaging formula 3, f is fixed, the image distance v is variable (from v to v′), and n is a constant , so the working distance w is variable (from w to w'). This means that even if the height of the measured object changes, the main control unit inside the auto-focus electronic eyepiece can execute the focus search algorithm to automatically control the movement of the focus lens group to change the image distance (from v to v') accordingly. Imaging is clear.

[0119] The implementation manner of automatic focusing is the same as that in the first embodiment.

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Abstract

The invention relates to an automatic focusing electronic eyepiece and a system. Including: lens, Sensor board, main control unit, interface unit, the lens receives the image of the measured target once formed by the front-end optical system, which includes the focusing lens group, focusing motor and lens group position detection unit, the Sensor board realizes photoelectric conversion, and the The optical signal through the lens is converted into an image signal and then output to the main control unit; the main control unit outputs a control signal to control the focus motor to drive the movement of the focus lens group, and integrates the focus lens group and the corresponding control circuit into the electronic Inside the eyepiece, the main control unit inside the electronic eyepiece executes the focus search algorithm, controls the movement of the focusing lens group, and realizes automatic focusing by adjusting the image distance. Through the present invention, automatic focusing can be realized without moving or changing the front-end optical system (including not limited to microscopes, telescopes, etc.), improving focusing efficiency and shortening focusing time.

Description

technical field [0001] The invention relates to the technical field of electronic eyepieces, in particular to an automatic focusing electronic eyepiece, an automatic focusing microscope and an automatic focusing telescope. Background technique [0002] Eyepiece eyepiece, a visual optical device used to observe the image formed by the front-end optical system, is a component of visual optical instruments such as telescopes and microscopes. The main function of the traditional eyepiece is to re-magnify the real image obtained by the magnification of the objective lens, so as to form a clear virtual image at the distance of clear vision, such as figure 1 . The main disadvantage of this kind of eyepiece is that it is observed by the human eye, and it is easy to cause visual fatigue after a long time, and the image observed by the human eye cannot be saved, analyzed and processed. Therefore, on the basis of traditional eyepieces, electronic eyepieces have been invented, such as...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/232G02B7/36
CPCG02B7/36H04N23/60H04N23/67
Inventor 徐加军楼品琪龚晔
Owner TAGYE TECH HANGZHOU CO LTD
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