Coaxial illumination imaging equipment
By combining self-emissive microdisplay devices with a beam splitting system and a projection imaging system, the problem of coaxial illumination with different brightness and color in different areas, which is not possible in existing technologies, is solved. This achieves the effect of projecting specific images onto the surface of an object, and the structure is simple and inexpensive.
Patent Information
- Application Number
- CN202423013469.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-06
- Publication Date
- 2025-10-24
- Estimated Expiration
- 2034-12-06
AI Technical Summary
Existing industrial visual imaging equipment cannot achieve coaxial lighting with different brightness and colors in different areas, and cannot project the required image on the surface of the illuminated object.
The system employs a combination of self-emissive microdisplay devices, a beam splitting system, and a projection imaging system. Images are formed through coding control, and the beam splitting system and projection imaging system are used to project illumination onto the target. The camera then collects the reflected light to form an image.
It realizes lighting with different brightness and colors in different areas, can project the required image on the surface of the illuminated object, has a simple structure and low cost.
Smart Images
Figure CN223471198U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to industrial vision technology field, concretely relates to a coaxial illumination imaging equipment. BACKGROUND
[0002] The coaxial illumination in the machine vision system can effectively improve the quality and precision of the image, and the coaxial illumination makes the light vertically irradiate on the observed object through specific optical design, thereby reducing the influence caused by light scattering and reflection. This illumination mode is very suitable for detecting surface details, such as scratches, flaws, marks and other tiny features. However, in the process of realizing the utility model, the inventors find that the existing coaxial illumination scheme of industrial vision imaging at least has the following problems: different brightness and different color illumination in different regions cannot be realized; and the required image cannot be projected on the surface of the illuminated object. SUMMARY
[0003] The utility model aims at solving the above technical problems at least to some extent. To this end, the utility model aims at providing a coaxial illumination imaging equipment.
[0004] The utility model adopts the technical scheme that:
[0005] A coaxial illumination imaging equipment comprises a self-luminous micro display device for forming an image through coding control, a light splitting system is arranged between a projection imaging system and the self-luminous micro display device, the light emitted by the self-luminous micro display device passes through the light splitting system and the projection imaging system to project the coded illumination light field to the surface of a target object; a camera is arranged on one side of the light splitting system, and the reflected light of the target object after illumination passes through the projection imaging system and the light splitting system in reverse to be imaged to the camera for image acquisition.
[0006] Preferably, the self-luminous micro display device is a micro silicon-based OLED light-emitting screen. The light splitting system comprises a light splitting prism. The projection imaging system comprises an imaging lens.
[0007] The utility model has the beneficial effects that:
[0008] The coaxial illumination imaging equipment provided by the utility model projects the required image coded by the self-luminous micro display device on the illuminated target by using the light splitting system and the projection imaging system, the camera photographs the illuminated object through the projection imaging system, the coaxial coded illumination imaging is realized, different brightness and different color illumination in different regions can be realized, the required image can be projected on the surface of the illuminated object, and the structure is simple and the cost is low. BRIEF DESCRIPTION OF DRAWINGS
[0009] Figure 1 is the schematic diagram of the coaxial illumination imaging equipment of the utility model.
[0010] In the figure: 1- self-luminous micro display device; 2- spectroscopic system; 3- projection imaging system; 4- sample; 5- camera. DETAILED DESCRIPTION
[0011] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention and are not to be construed as limiting the present invention. The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in a variety of different configurations.
[0012] In the present invention, unless otherwise clearly specified and limited, terms such as "installed", "connected", "connected", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two components.
[0013] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.
[0014] like Figure 1 As shown, a coaxial illumination imaging device of this embodiment includes a self-luminous microdisplay device 1, a spectroscopic system 2, a projection imaging system 3 and a camera 5. The self-luminous microdisplay device 1, the spectroscopic system 2, the projection imaging system 3 and the sample 4 are arranged on the same straight line, and the spectroscopic system 2 is arranged between the projection imaging system 3 and the self-luminous microdisplay device 1. The light emitted by the self-luminous microdisplay device 1 passes through the spectroscopic system 2 and the projection imaging system 3 to project the encoded illumination light field onto the surface of the sample 4; the camera 5 is arranged on one side of the spectroscopic system 2, and the reflected light of the sample 4 after illumination passes through the projection imaging system 3 and the spectroscopic system 2 in the opposite direction to be imaged to the camera 5 for image acquisition.
[0015] The working process and principle of the coaxial illumination imaging device of this embodiment are as follows: each pixel of the self-luminous microdisplay device 1 is encoded and controlled to form the required image; the light emitted by the self-luminous microdisplay device 1 passes through the spectroscopic system 2 and the projection imaging system 3 to project the encoded illumination light field onto the surface of the sample 4; after illumination, the reflected light of the sample 4 passes through the projection imaging system 3 and the spectroscopic system 2 in reverse to be imaged onto the imaging device surface of the camera 5 to realize image acquisition.
[0016] The self-luminous micro display device 1 is a micro silicon-based OLED light-emitting screen, which can form images through coding control. The light splitting system 2 includes a light splitting prism, and the projection imaging system 3 includes an imaging lens.
[0017] It should be noted that the micro-silicon-based OLED light-emitting screen is prior art, and forming an image through coding control is also a function of the micro-silicon-based OLED light-emitting screen itself.
[0018] The utility model is not limited to the above optional implementation, and anyone can derive other various forms of products under the enlightenment of the utility model, but no matter any change in shape or structure, any technical scheme falling within the scope defined by the claims of the utility model falls within the protection scope of the utility model.
Claims
1. A coaxial illumination imaging apparatus, characterized by: The application relates to a self-luminous micro display device (1) for forming an image by coding control, a light splitting system (2) is arranged between a projection imaging system (3) and the self-luminous micro display device (1), light emitted by the self-luminous micro display device (1) passes through the light splitting system (2) and the projection imaging system (3) to project a coded illumination light field to a target object surface; a camera (5) is arranged on one side of the light splitting system (2), and reflected light of the target object after illumination passes through the projection imaging system (3) and the light splitting system (2) in reverse to form an image on the camera (5) for image acquisition.
2. A coaxial illumination imaging device according to claim 1, characterized in that: The self-luminous micro display device (1) is a micro silicon-based OLED light-emitting screen.
3. A coaxial illumination imaging device according to claim 1, characterized in that: The light splitting system (2) comprises a light splitting prism.
4. A coaxial illumination imaging device according to claim 1, characterized in that: The projection imaging system (3) comprises an imaging lens.