Optical material mounting structure and projector

Abstract

The utility model discloses an optical material mounting structure and a projector, and relates to the technical field of projectors, and the optical material mounting structure comprises an optical machine main body and a plurality of elastic members. The ray machine main body is provided with two first limiting grooves which are oppositely distributed, and the two first limiting grooves are used for installing a reflecting mirror; the ray machine main body is also provided with two second limiting grooves which are oppositely distributed, and the two second limiting grooves are used for installing a Fresnel lens. The elastic piece is used for being arranged in the first limiting groove and the second limiting groove so as to fix the reflecting mirror and the Fresnel lens. The size of the first limiting groove is larger than the thickness of the reflector, and the size of the second limiting groove is larger than the thickness of the Fresnel lens. According to the optical material mounting structure, the reflector and the Fresnel lens are easier to mount, the scraping risk is reduced, the optical material is pressed and fixed through deformation generated by the elastic piece, foreign matter generated by scraping during assembly is remarkably reduced, the production yield and the projection picture quality are effectively improved, stable fixing of the optical material is achieved through deformation of the elastic piece, and the production efficiency is improved. And the assembly is convenient.

Description

Technical Field

[0001] This utility model relates to the field of projector technology, and in particular to an optical material mounting structure and a projector. Background Technology

[0002] A projector is an electronic device that amplifies and projects images or video signals onto a screen or other flat surface using an optical system; it can be considered a "portable large-screen display".

[0003] As a relatively new product, projectors enable users to watch videos, etc. The size of the projected image is magnified many times over due to the light being focused and diffused by the optical engine system. Therefore, controlling foreign objects within the optical engine is crucial, as it directly affects the user's viewing experience.

[0004] In existing single-LCD projector optical assembly structures, the reflector (glass) and Fresnel lens (acrylic or PC) are typically fixed directly via a limiting groove. Because both optical materials have sharp edges, they easily scratch the plastic material at the edge of the limiting groove during assembly, generating debris and foreign objects. These foreign objects can enter the optical path system, causing image defects, severely impacting the user's viewing experience, and also resulting in low production yield and high rework rates.

[0005] Therefore, how to provide an optical material mounting structure and projector that can simplify the assembly process and effectively reduce the generation of foreign objects is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0006] The purpose of this utility model is to provide an optical material mounting structure and a projector, which solves the technical problems of existing single LCD projector optical material mounting structures, where optical materials are easily scratched during assembly, resulting in debris and foreign objects, causing image defects, seriously affecting the user's viewing experience, and making assembly inconvenient.

[0007] To achieve the above objectives, this utility model provides an optical material mounting structure, comprising:

[0008] The optical engine body is provided with two oppositely distributed first limiting slots for mounting mirrors; the optical engine body is also provided with two oppositely distributed second limiting slots for mounting Fresnel lenses.

[0009] Several elastic members are provided in the first limiting groove and the second limiting groove to fix the reflector and the Fresnel lens;

[0010] The first limiting groove is larger than the thickness of the reflector, and the second limiting groove is larger than the thickness of the Fresnel lens.

[0011] Preferably, the elastic element is a spring sheet.

[0012] Preferably, one of the first limiting grooves contains two elastic elements, and the other first limiting groove contains one elastic element.

[0013] Preferably, each of the two second limiting grooves contains one of the elastic elements.

[0014] Preferably, two elastic elements are provided in one of the first limiting grooves located away from the second limiting groove.

[0015] Preferably, when the reflector is installed in the first limiting groove and the Fresnel lens is installed in the second limiting groove, the angle between the reflector and the Fresnel lens is an acute angle.

[0016] Preferably, the angle between the reflector and the Fresnel lens is 45 degrees.

[0017] Preferably, the plastic molds for processing the first limiting groove and the second limiting groove are produced using a zero-degree draft process.

[0018] This utility model also provides a projector, including the optical material mounting structure provided by any of the above technical solutions.

[0019] Compared to the aforementioned background technology, the optical material mounting structure provided by this utility model has a first limiting groove larger than the thickness of the reflector and a second limiting groove larger than the thickness of the Fresnel lens. This makes it easier to install the reflector and Fresnel lens, reducing the risk of scratches. After the reflector and Fresnel lens are installed, they are fixed by the deformation generated by the elastic element, which significantly reduces foreign matter generated by scratches during assembly, effectively improving production yield and projection image quality. Furthermore, the deformation of the elastic element achieves stable fixation of the optical material, making assembly convenient.

[0020] Projectors can produce the same technical effects as optical material mounting structures. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0022] Figure 1 This is one of the schematic diagrams of the optical material mounting structure provided in an embodiment of the present utility model (without the reflector and the Fresnel lens installed).

[0023] Figure 2A second schematic diagram of the optical material mounting structure provided in an embodiment of this utility model (with a reflector and a Fresnel lens installed).

[0024] Figure 3 Schematic diagram three of the optical material mounting structure provided in the embodiment of this utility model (with elastic element inserted).

[0025] Figure 4 An exploded view of the reflector and Fibonacci mirror during installation, as provided in this embodiment of the utility model.

[0026] Figure 5 This is a schematic diagram of the structure of the elastic element provided in an embodiment of the present utility model.

[0027] Figures 1 to 5 Chinese reference numerals: 10, main body of the optical engine; 11, first limiting groove; 12, second limiting groove; 20, mirror; 30, Fresnel lens; 40, elastic element. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] This utility model provides an optical material mounting structure, which makes it easier to install the reflector 20 and the Fresnel lens 30 into the first limiting groove 11 and the second limiting groove 12, reducing the risk of scratches. Stable elastic pressure is provided by the stainless steel spring sheet to prevent the reflector 20 and the Fresnel lens 30 from becoming loose.

[0031] Please refer to this as well. Figures 1 to 5 The optical material mounting structure provided by this utility model includes an optical engine body 10 and several elastic elements 40.

[0032] The optical engine body 10 has two opposing first limiting grooves 11 for mounting the reflector 20; the optical engine body 10 also has two opposing second limiting grooves 12 for mounting the Fresnel lens 30. The Fresnel lens 30 is a Fresnel lens. The reflector 20 and the Fresnel lens 30 form a lens group used to focus light, adjust the direction of the light path, and adjust the projection ratio. The first limiting grooves 11 and the second limiting grooves 12 are manufactured using a plastic mold.

[0033] The elastic element 40 is disposed in the first limiting groove 11 and the second limiting groove 12 to fix the reflector 20 and the Fresnel lens 30.

[0034] The first limiting groove 11 is larger than the thickness of the reflector 20, and the second limiting groove 12 is larger than the thickness of the Fresnel lens 30, making it easier to install optical materials and reducing the risk of scratches.

[0035] During assembly, since the size of the first limiting groove 11 is greater than the thickness of the reflector 20 and the size of the second limiting groove 12 is greater than the thickness of the Fresnel lens 30, no foreign objects will be scraped out when the reflector 20 and the Fresnel lens 30 are respectively installed into the first limiting groove 11 and the second limiting groove 12. After the reflector 20 and the Fresnel lens 30 are installed, the deformation generated by the elastic element 40 presses the reflector 20 and the Fresnel lens 30 together to fix them.

[0036] This design significantly reduces foreign matter generated by scratches during assembly, effectively improving production yield and projection image quality, while also achieving stable fixation of optical materials through the deformation of the elastic element 40.

[0037] Please refer to Figure 5 In this embodiment, the elastic element 40 is a spring sheet, which is made of stainless steel.

[0038] In use, the spring is placed in the first limiting groove 11 and the second limiting groove 12. The spring undergoes elastic deformation under the action of the groove wall and the optical material. The pressure generated by the elastic deformation fixes the reflector 20 and the Fresnel lens 30 in the first limiting groove 11 and the second limiting groove 12.

[0039] With this configuration, the stainless steel spring can provide stable elastic pressure, preventing the reflector 20 and the Fresnel lens 30 from becoming loose.

[0040] Please refer to this as well. Figures 1 to 4 One of the first limiting grooves 11 is provided with two elastic elements 40, and the other first limiting groove 11 is provided with one elastic element 40.

[0041] Please refer to this as well. Figures 1 to 4 Each of the two second limiting grooves 12 is provided with an elastic element 40.

[0042] Please refer to this as well. Figures 1 to 4 Two elastic elements 40 are provided in a first limiting groove 11 located away from the second limiting groove 12.

[0043] Please refer to this as well. Figures 1 to 4 When the reflector 20 is installed in the first limiting groove 11 and the Fresnel lens 30 is installed in the second limiting groove 12, the included angle between the reflector 20 and the Fresnel lens 30 is an acute angle.

[0044] Specifically, one of the first limiting grooves 11 is positioned close to one of the second limiting grooves 12, while the other first limiting groove 11 is positioned away from the other second limiting groove 12. Thus, the line connecting the two first limiting grooves 11 and the line connecting the two second limiting grooves 12 form a certain angle, and this angle is acute. When the two sides of the reflector 20 are installed and fixed within the two first limiting grooves 11, and the two sides of the Fresnel lens 30 are installed and fixed within the two second limiting grooves 12, a certain angle is formed between the reflector 20 and the Fresnel lens 30.

[0045] The reflector 20 needs to reflect the light from the light source to the Fresnel lens 30. The angle between the reflector 20 and the Fresnel lens 30 matches the focusing angle range of the Fresnel lens 30 to ensure that the light uniformly covers the LCD panel.

[0046] The angle between the reflector 20 and the Fresnel lens 30 directly affects the light propagation path. It is necessary to ensure that the light rays accurately enter the surface of the Fresnel lens 30 after being deflected by the reflector 20. If the angle is too large, the light rays will escape from the effective area of ​​the Fresnel lens 30, reducing the light energy utilization rate; if the angle is too small, it may cause light path overlap or stray light interference.

[0047] In this embodiment, the angle between the reflector 20 and the Fresnel lens 30 is 45 degrees. This arrangement avoids light energy loss or image shift.

[0048] In this embodiment, the plastic molds for processing the first limiting groove 11 and the second limiting groove 12 adopt a zero-degree draft process. This setting can ensure the verticality of the assembly, which is beneficial to improving the production yield and the quality of the projected image.

[0049] Optionally, since the elastic element 40 is made of stainless steel, in order to reduce the risk of scratching when the elastic element 40 is installed into the first limiting groove 11 and the second limiting groove 12, the end of the stainless steel spring can be rounded, or a flexible element can be provided at the end of the stainless steel spring. The flexible element can be a silicone sheet or a sponge. By wrapping the end of the stainless steel spring with a silicone sheet or sponge, the scratches generated during assembly can be effectively eliminated without affecting the function of the stainless steel spring in fixing the reflector 20 and the Fresnel lens 30, significantly reducing foreign objects inside the optical engine and improving the quality of the projected image.

[0050] The optical material mounting structure provided by this utility model has a first limiting groove 11 whose size is larger than the thickness of the reflector 20, and a second limiting groove 12 whose size is larger than the thickness of the Fresnel lens 30. This makes the reflector 20 and Fresnel lens 30 easier to install, reducing the risk of scratches. When the reflector 20 and Fresnel lens 30 are respectively installed into the first limiting groove 11 and the second limiting groove 12, they will not scrape foreign objects out of the lower cover of the optical engine. After the reflector 20 and Fresnel lens 30 are installed, they are fixed by the deformation generated by the elastic element 40. This design significantly reduces foreign objects generated by scratches during assembly, effectively improving production yield and projection image quality. Furthermore, the deformation of the elastic element 40 ensures stable fixation of the optical materials, facilitating assembly.

[0051] In addition, the manufacturing process of stainless steel springs may include:

[0052] I. Material Preparation and Pretreatment

[0053] Material selection: Stainless steel is selected as the base material, and it must meet the requirements for elasticity, corrosion resistance, and fatigue strength. Material forms include plates and strips, which must be cut or sheared to the required dimensions according to design specifications.

[0054] Pretreatment: Remove impurities such as oxides and grease from the surface of the material, such as by pickling or degreasing, to ensure the accuracy of subsequent processing.

[0055] II. Stamping

[0056] Mold design and layout: A precision mold is designed based on the shape of the spring sheet. The stamping process is simulated using CAD software to ensure the dimensional tolerances and structural stability of the spring sheet.

[0057] Stamping: A punch press is used to apply high pressure to stainless steel sheets, and plastic deformation such as punching, bending and stretching is completed through a die to form the prototype of the spring sheet.

[0058] III. Heat Treatment and Stabilization Treatment

[0059] Quenching and tempering: The stamped spring sheet is quenched to improve hardness and elasticity, and then tempered to adjust internal stress and enhance toughness. The tempering temperature is 200-400℃.

[0060] Stabilization treatment: The elastic properties of the spring sheet are stabilized by low-temperature aging treatment (such as holding at 150-300℃ for several hours) to reduce stress relaxation during long-term use.

[0061] IV. Surface Treatment

[0062] Polishing and cleaning: Mechanical polishing or electrolytic polishing is performed on the surface of the spring to remove burrs and micro-defects remaining from the processing.

[0063] Coating or passivation: Nickel plating, zinc plating, or chemical passivation treatment to improve properties such as corrosion resistance.

[0064] In addition to the optical material mounting structures disclosed in the above embodiments, this utility model also provides a projector that includes the above-described optical material mounting structures.

[0065] The projector includes an optical material mounting structure, and thus can produce the same technical effects as an optical material mounting structure.

[0066] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0067] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of this utility model.

Claims

1. An optical material mounting structure, characterized in that, include: The optical engine body (10) is provided with two oppositely distributed first limiting grooves (11), which are used to install mirrors (20); the optical engine body (10) is also provided with two oppositely distributed second limiting grooves (12), which are used to install Fresnel lenses (30). Several elastic members (40) are provided in the first limiting groove (11) and the second limiting groove (12) to fix the reflector (20) and the Fresnel lens (30); The first limiting groove (11) is larger than the thickness of the reflector (20), and the second limiting groove (12) is larger than the thickness of the Fresnel lens (30).

2. The optical material mounting structure according to claim 1, characterized in that, The elastic element (40) is a spring sheet.

3. The optical material mounting structure according to claim 1, characterized in that, One of the first limiting grooves (11) is provided with two elastic elements (40), and the other first limiting groove (11) is provided with one elastic element (40).

4. The optical material mounting structure according to claim 1, characterized in that, Each of the two second limiting grooves (12) is provided with an elastic element (40).

5. The optical material mounting structure according to claim 1, characterized in that, Two elastic elements (40) are provided in one of the first limiting grooves (11) away from the second limiting groove (12).

6. The optical material mounting structure according to claim 1, characterized in that, When the reflector (20) is installed in the first limiting groove (11) and the Fresnel lens (30) is installed in the second limiting groove (12), the angle between the reflector (20) and the Fresnel lens (30) is an acute angle.

7. The optical material mounting structure according to claim 1, characterized in that, The angle between the reflector (20) and the lenticular lens (30) is 45 degrees.

8. The optical material mounting structure according to claim 1, characterized in that, The plastic molds for processing the first limiting groove (11) and the second limiting groove (12) are made using a zero-degree draft process.

9. A projector, characterized in that, Includes the optical material mounting structure described in any one of claims 1 to 8.

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