Slide for oblique projection, making method thereof and projection lens

A technology of oblique projection and projection lens, which is applied in the direction of optics, instruments, projection devices, etc., can solve the problems of unclearness, image distortion and low resolution of oblique projection images, etc., and achieve the effect of clear projection and high resolution

Inactive Publication Date: 2017-11-07
XIAMEN LEADING OPTICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, these projection products, such as the public patent: CN206054084U, generally use vertical projection, and the size of the vertical projection image is controlled by the focal length and object distance of the projection lens; and in some places with limited space, it is necessary to obtain a larger projection image. In

Method used

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  • Slide for oblique projection, making method thereof and projection lens
  • Slide for oblique projection, making method thereof and projection lens
  • Slide for oblique projection, making method thereof and projection lens

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Embodiment Construction

[0031] The present invention will be further described in conjunction with the accompanying drawings and specific embodiments.

[0032] Such as figure 1 As shown, a method for making a slide for oblique projection comprises the following steps:

[0033] S1. Establish a projection model according to the desired projection field of view, the installation position of the projection lens, and the field of view angle of the projection lens.

[0034] Specifically, according to the size of the projected field of view of the oblique projection, the installation position of the projection lens, and the field of view c of the projection lens obtained according to actual needs, the projection model is simulated and drawn, such as figure 2 and 3 As shown, in this specific embodiment, the projection model is established in the XYZ rectangular coordinate system, the projection field of view is located in the XOZ plane, and the projection lens is in the Y-axis direction.

[0035] Accordi...

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Abstract

The invention relates to the field of projection devices, and particularly relates to a slide for oblique projection, a making method thereof and a projection lens. The making method for the slide for oblique projection comprises the following steps: S1, according to a projection view field, the mounting position of the projection lens and the view field angle of the projection lens obtained based on requirements, a projection model is built; S2, a Sensor surface vertical to the optical axis of the projection lens in the projection model is made, and an actual image which needs to be obtained is put in the projection view field range; S3, an inverse projection method is adopted to project the actual image in the projection view field range on the Sensor surface; and S4, after the image on the Sensor surface is zoomed and adjusted, the image is transferred to the slide to make the slide. Fidelity of a projection graph at an oblique angle can be realized, and being clear and sharp is realized.

Description

technical field [0001] The invention belongs to the field of projection devices, and in particular relates to a projection sheet for oblique projection, a manufacturing method thereof, and a projection lens. Background technique [0002] Vehicle and decorative lighting and shadow projection products are used to enlarge and project the image on the projection film to the corresponding position for decoration or identification. At present, these projection products, such as the public patent: CN206054084U, generally use vertical projection, and the size of the vertical projection image is controlled by the focal length and object distance of the projection lens; and in some places with limited space, it is necessary to obtain a larger projection image. In some cases, oblique projection must be used, but at present, if the projection surface of these projection products is inclined, the image will be distorted, and the resolution of the oblique projection image is not high and ...

Claims

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Application Information

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IPC IPC(8): G03B21/14
CPCG03B21/147G03B21/142
Inventor 吴富宝蔡云鹏张军光
Owner XIAMEN LEADING OPTICS
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