Exhibition stand structure capable of realizing close-range imaging
By setting up the close module in front of the LCD optical machine and adjusting the focal length using a Fresnel lens or a spherical lens combination, the problem that the LCD optical machine cannot take close images on the booth of the store is solved, and a clear close-range projection effect is achieved.
Patent Information
- Application Number
- CN202422861143.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-22
- Publication Date
- 2025-09-05
- Estimated Expiration
- 2034-11-22
AI Technical Summary
LCD optical machines cannot achieve close-range imaging on the booth of the store, resulting in unsatisfactory picture effects.
The approach module is adopted, including a Fresnel lens, a spherical lens or a combination structure, to adjust the focal length of the projected light to reduce the imaging distance, and to realize the turning projection through the reflector, and to fix the approach module with a detachable fixing device.
Without changing the image size, the LCD optical machine is able to achieve close-range clear imaging, improving the projection effect on the booth.
Smart Images
Figure CN223308524U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of optics, and in particular to a booth structure for realizing close-range imaging. Background Art
[0002] Space in stores and exhibition booths abroad is very limited, and projection distance is also very limited. While short-throw and ultra-short-throw optical projectors can achieve relatively ideal imaging, LCD optical projectors face a significant disadvantage. Because LCD optical projectors have a large throw ratio, the closest imaging distance is generally 1 meter or even further, making it impossible to project an ideal image on store booths. Therefore, a booth structure that achieves close-range imaging is needed. Utility Model Content
[0003] The main purpose of this application is to provide a booth structure for achieving close-range imaging, aiming to solve the problems mentioned in the background technology.
[0004] The present application provides a booth structure for achieving close-range imaging, including an LCD light engine and a zoom module. The LCD light engine is used to project an original image source. The zoom module is used to adjust the focal length of the passing projection light to reduce the distance of the projection imaging. The zoom module includes at least two zoom lens assemblies, and the zoom lens assemblies are any one of the following: a Fresnel lens, a spherical lens, or a combination structure of a Fresnel lens and a spherical lens.
[0005] Furthermore, the LCD optical machine includes an LCD screen, a front mirror and a projection lens, and the LCD screen projects an image source through the front mirror and the projection lens.
[0006] Furthermore, it also includes a reflector, which is used to reflect the projection light to achieve the turning projection. The projection light of the LCD light machine passes through the zoom module and is then reflected by the reflector.
[0007] Furthermore, the zoom module includes two Fresnel lenses, and the projection light of the LCD light engine passes through the two Fresnel lenses in sequence to reduce the distance of the projection imaging.
[0008] Furthermore, the zoom module includes a Fresnel lens and a spherical lens, and the projection light of the LCD light engine passes through the Fresnel lens and spherical lens combination structure in sequence to reduce the distance of the projection imaging.
[0009] Furthermore, the zoom module includes two spherical lenses, and the projection light of the LCD light engine passes through the double-layer spherical lenses in sequence to reduce the distance of the projection imaging.
[0010] Furthermore, it also includes a detachable fixing device, which is used to fix the pulling module and the LCD light engine.
[0011] The utility model sets a zoom-in module and applies the zoom-in module in front of the projection light machine lens. Without changing the image size, the projected image is zoomed in, so that the projection ratio of the light machine becomes smaller, and the light machine without the near imaging function can be clearly focused at close range. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.
[0013] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.
[0014] Figure 1 It is a structural schematic diagram of an exhibition stand structure according to an embodiment of the present invention.
[0015] Figure 2 yes Figure 1 Comparison diagram of the projection of the embodiment and the original projection.
[0016] Figure 3 yes Figure 1 Schematic diagram of adding a reflector in the embodiment.
[0017] The purpose, features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION
[0018] To make the above-mentioned purposes, features, and advantages of the present invention more clearly understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.
[0019] See also Figure 1-3The present application provides a booth structure 100 for realizing close-range imaging, including an LCD light engine 10 and a zoom module 20, wherein the LCD light engine 10 is used to project an original image source, and the zoom module 20 is used to adjust the focal length of the passing projection light to reduce the distance of the projection imaging, and the zoom module 20 includes at least two zoom lens assemblies 21, and the zoom lens assembly 21 is any one of the three structures of Fresnel lens, spherical lens, and Fresnel lens and spherical lens combination structure.
[0020] like Figure 2 As shown, the present invention sets a zoom-in module 20 and applies the zoom-in module 20 in front of the projection light machine lens. Without changing the image size, the projection effect of the zoom-in module in the projection booth application scenario is compared. When the zoom-in module is not added, the first projection picture 101 is far behind the booth screen; after adding the zoom-in module, the first projection picture 102 is zoomed from far behind the screen to the screen, and the projected image is zoomed in, which makes the light machine projection ratio smaller, so that the light machine that does not have the close-range imaging function can focus clearly at close range.
[0021] In one embodiment of the present invention, the LCD optical machine 10 includes an LCD screen 11 , a front mirror 12 and a projection lens 13 . The image source projected by the LCD screen 11 passes through the front mirror 12 and the projection lens 13 and is then projected out.
[0022] like Figure 3 As shown, in one embodiment of the present invention, a reflector 30 is further included. The reflector 30 is used to reflect the projection light to achieve the inflection projection. The projection light of the LCD light engine 10 passes through the zoom module 20 and is then reflected by the reflector.
[0023] In one embodiment of the present invention, the zoom module 20 includes two Fresnel lenses, and the projection light of the LCD light engine 10 passes through the two Fresnel lenses in sequence to reduce the distance of the projection imaging.
[0024] In one embodiment of the present invention, the zoom module 20 includes a Fresnel lens and a spherical lens. The projection light of the LCD light engine 10 passes through the Fresnel lens and spherical lens combination structure and the spherical lens in sequence to reduce the distance of the projection imaging.
[0025] In one embodiment of the present invention, the zoom module 20 includes two spherical lenses, and the projection light of the LCD light engine 10 passes through the double-layer spherical lenses in sequence to reduce the distance of the projection imaging.
[0026] In one embodiment of the present invention, the booth structure 100 further includes a detachable fixing device for fixing the pulling module 20 to the LCD light engine 10. The detachable fixing device can be used for simple modification without modifying the LCD light engine 10.
[0027] The above are only preferred embodiments of the present application and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent processing scope of the present application.
Claims
1. A booth structure for achieving close-range imaging, characterized in that: It includes an LCD light engine and a zoom module, wherein the LCD light engine is used to project the original image source, the zoom module is used to adjust the focal length of the passing projection light to reduce the distance of the projection imaging, and the zoom module includes at least two zoom lens assemblies, and the zoom lens assemblies are any one of the three types of Fresnel lens, spherical lens, and Fresnel lens and spherical lens combination structure.
2. The exhibition stand structure for achieving close-range imaging according to claim 1, characterized in that: The LCD optical machine includes an LCD screen, a front mirror and a projection lens. The LCD screen projection image source is projected out after passing through the front mirror and the projection lens.
3. The exhibition stand structure for achieving close-range imaging according to claim 1, characterized in that: It also includes a reflector, which is used to reflect the projection light to achieve turning projection. The projection light of the LCD light machine passes through the zoom module and is then reflected by the reflector.
4. The exhibition stand structure for achieving close-range imaging according to claim 1, characterized in that: The zoom module includes two Fresnel lenses, and the projection light of the LCD light engine passes through the two Fresnel lenses in sequence to reduce the distance of the projection imaging.
5. The exhibition stand structure for realizing close-range imaging according to claim 1, characterized in that: The zoom module includes a Fresnel lens and a spherical lens. The projection light of the LCD light engine passes through the combined structure of the Fresnel lens and the spherical lens in sequence to reduce the distance of the projection imaging.
6. The exhibition stand structure for achieving close-range imaging according to claim 1, characterized in that: The zoom module includes two spherical lenses, and the projection light of the LCD light engine passes through the double-layer spherical lenses in sequence to reduce the distance of the projection imaging.
7. The exhibition stand structure for realizing close-range imaging according to claim 1, characterized in that: It also includes a detachable fixing device, which is used to fix the pulling module and the LCD light engine.