Optical zoom focusing method, projection device and storage medium

An optical zoom and projection technology, applied in the field of projectors, can solve the problems of blurred picture and poor user experience, and achieve the effect of ensuring the picture, reducing the number of operations, precise adjustment and stable adjustment.

Active Publication Date: 2020-12-15
CHENGDU XGIMI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] On the projection equipment with optical zoom, the optical zoom mechanism can realize the size and zoom of the projected overall picture, but due to the change of the focal length of the lens movement, a new problem is caused: the picture becomes blurred
The traditional processing method uses the zoom operation first to transform the picture to an appropriate size, and then focus to ensure a clear picture; two operations lead to poor user experience

Method used

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  • Optical zoom focusing method, projection device and storage medium
  • Optical zoom focusing method, projection device and storage medium
  • Optical zoom focusing method, projection device and storage medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A motorized focusing method for optical zooming, such as figure 2 shown, including the following steps:

[0044] Get instructions;

[0045]Control the focus mechanism and the zoom mechanism according to the instructions to adjust the definition and / or size of the projected picture.

[0046] Specifically, such as figure 1 As shown, the focus mechanism and the zoom mechanism are controlled to move asynchronously according to the instructions, so that the projected picture remains clear or relatively clear when changing its size.

[0047] After receiving the command, control the focus mechanism to rotate in the first direction, and then control the zoom mechanism to rotate in the first direction or the second direction opposite to the first direction. The rotation direction is set according to the specific design. The first direction can be clockwise , can also be counterclockwise; correspondingly, the second direction is counterclockwise or clockwise.

[0048] Among...

Embodiment 2

[0059] The difference between this embodiment and the embodiment is that the focus mechanism and the zoom mechanism are controlled to move asynchronously at a non-fixed projection distance according to the second relational expression, and the second relational expression is to move, and the second relational expression is z=f ' (x,y) , y Indicates the number of zoom travel steps of the zoom mechanism, x represents the projection distance, z Indicates the number of focusing travel steps of the focusing mechanism, f ' （） Indicates the functional relationship among the projection distance, the zoom travel steps of the zoom mechanism, and the focus travel steps of the focus mechanism.

[0060] The acquisition of the second relational expression comprises the following steps:

[0061] Under multiple projection distances, change the zoom travel steps of the zoom mechanism, and record the focus travel steps of the focus mechanism corresponding to the clear point at the same t...

Embodiment 3

[0068] The difference between this embodiment and Embodiment 1 or 2 is that this embodiment optimizes the asynchronous motion, and the details are as follows:

[0069] Under the fixed projection distance, if the projection picture is clear before adjustment, controlling the focus mechanism and the zoom mechanism to perform asynchronous movement includes controlling the movement of the focus mechanism after controlling the movement of the zoom mechanism according to the first relational expression. That is, at a fixed distance, when the projected image is clear and the zoom and focus are triggered, the zoom motor moves first, and then the focus motor moves again; the minimum movement unit of movement is as described in the following embodiments, and is not limited here; at the same time, the size of the screen changes during the above process After or when it changes, the sharpness also changes, and the sharpness changes from clear to fuzzy (the change of the zoom focal length a...

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Abstract

The invention relates to the field of projectors, in particular to an optical zoom focusing method, a projection device and a storage medium. The method comprises the steps of obtaining an instruction; controlling a focusing mechanism and a zooming mechanism to adjust the definition and / or size of a projection picture according to the instruction. The invention further comprises a projection system. The zooming mechanism and the focusing mechanism are controlled to move asynchronously, clear pictures are guaranteed while the pictures are zoomed, multiple operations are avoided, and user experience is improved.

Description

technical field [0001] The present application relates to the field of projectors, in particular, to a focusing method for optical zoom, a projection device and a storage medium. Background technique [0002] On the projection equipment with optical zoom, the optical zoom mechanism can realize the size and zoom of the projected overall image, but due to the change of the focal length of the lens movement, a new problem is caused: the image becomes blurred. The traditional processing method uses the zoom operation first to transform the image to an appropriate size, and then focuses to ensure a clear image; the two operations lead to poor user experience. Therefore, the present invention proposes a focusing method for optical zooming, which ensures clear images while zooming in optical zoom images, and improves user experience. Contents of the invention [0003] The purpose of the embodiments of the present application is to provide a focusing method for optical zoom, a pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N9/31
CPCH04N9/317H04N9/3185
Inventor 张立造
Owner CHENGDU XGIMI TECH CO LTD
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