Optical zoom focusing method, projection device and storage medium

A focusing method and optical zoom technology, which is applied in the field of projectors, can solve problems such as blurred pictures and poor user experience, and achieve the effect of reducing the number of operations, precise adjustment and stable adjustment, and ensuring continuous clear zooming of the picture

Active Publication Date: 2020-06-26
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

[0047] A motorized focusing method for optical zooming, such as figure 1 shown, including the following steps:

[0048]Get instructions;

[0049] Control the focus mechanism and the zoom mechanism according to the instructions to adjust the definition and / or size of the projected picture.

[0050] Specifically, such as figure 2 As shown, the focus mechanism and the zoom mechanism are controlled to move synchronously according to the instructions, so that the projected picture remains clear when changing its size.

[0051] After receiving the command, control the focus mechanism to rotate in the first direction, and control the zoom mechanism to rotate in the first direction or the second direction opposite to the first direction synchronously; the synchronization here includes synchronization without time difference or synchronization with a certain error, The direction of rotation is set according to a specific design, and the first direction may be clockwise or counterc...

Embodiment 2

[0067] The difference between this embodiment and Embodiment 1 is that during the synchronous movement of the focus mechanism and the zoom mechanism, the projection distance changes.

[0068] Control the focus mechanism and the zoom mechanism to move synchronously at a non-fixed projection distance according to the second relational expression, 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.

[0069] The acquisition of the second relational expression comprises the following steps:

[0070] Under multiple projection distances, change the zoom travel steps of the zoom mechanism, and record the focus travel steps of the focus mech...

Embodiment 3

[0076] The difference between this embodiment and Embodiment 1 or 2 is that the minimum moving unit and moving speed are optimized during the synchronous movement of the zoom mechanism and the focusing structure.

[0077] For example, when the user triggers the zoom, the zoom range cannot be predicted in advance, so the zoom distance is divided, and multiple minimum moving units are used to realize the entire zooming process. The minimum moving unit of the focus mechanism and the minimum moving unit of the zoom mechanism have a mapping relationship, such as , at a fixed distance, the mapping relationship is the first relationship.

[0078] The smallest moving unit of the zoom mechanism during the movement of the zoom mechanism and the focus mechanism at a fixed distance b min satisfy b min = △ b / a ,△ b Indicates the moving distance of the zoom mechanism, a Indicates the greatest common divisor of the moving distance of the zoom mechanism and the moving distance of the ...

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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; controlling the zooming mechanism and the focusingmechanism to move synchronously. Clear pictures are guaranteed while the pictures are zoomed, multiple operations are avoided, and the user experience is improved.

Description

technical field [0001] The present application relates to the field of projectors, in particular, to an optical zoom focusing method, 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 proje...

Claims

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Application Information

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