Optical module structure and projection ray machine

Abstract

The utility model belongs to the technical field of projection equipment, and particularly relates to an optical module structure and a projection ray machine. The optical module structure comprises an optical lens and a plastic shell defining a containing cavity, the plastic shell is combined with the optical lens during injection molding, a first bearing part and a second bearing part are arranged on the inner side walls of the two sides of a cavity opening of the containing cavity respectively, and the optical lens is fixedly installed between the first bearing part and the second bearing part. Positioning through holes are formed in the inner side walls of the two sides of the cavity bottom or the cavity opening of the containing cavity. The projection ray machine comprises the optical module structure. The optical lens is arranged in the cavity, when the plastic shell is subjected to injection molding, the optical lens and the plastic shell are combined together and are fixedly installed after being cooled, assembling operation is not needed any more, the assembling difficulty can be reduced, the assembling precision can be improved, and the problems that an existing optical device is large in assembling difficulty and prone to generating assembling errors are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of projection equipment, and in particular relates to an optical module structure and a projection optical machine. Background Art

[0002] Projection machines are an important part of AR devices, used to meet AR scene applications such as navigation, audio and video entertainment, and interactive collaboration. At present, projection machines are developing towards miniaturization and lightweight, resulting in a small internal space, making the assembly of optical lenses very difficult, and it is easy to produce assembly errors, affecting the performance of the projection machine. Utility Model Content

[0003] The utility model aims to provide an optical module structure and a projection optical machine, aiming to solve the problem that the existing optical devices are difficult to assemble and prone to assembly errors.

[0004] The utility model discloses an optical module structure, which is applied to AR equipment. The optical module structure includes an optical lens and a plastic shell surrounding a housing cavity. The plastic shell is combined with the optical lens during injection molding. A first supporting portion and a second supporting portion are respectively provided on the inner side walls on both sides of the cavity opening of the housing cavity corresponding to the side edges of the optical lens, and the optical lens is fixedly installed between the first supporting portion and the second supporting portion. Positioning through holes are provided on the cavity bottom or the inner side walls on both sides of the cavity opening of the housing cavity.

[0005] As an improvement, the first supporting portion and the second supporting portion are bosses arranged on the inner side wall of the accommodating cavity, and an accommodating groove that is adapted to the shape of the side edge of the optical lens is provided on the bosses.

[0006] As an improvement, the optical lens is a lens.

[0007] As an improvement, the lens is a circular structure, and the accommodating groove arranged at the side of the lens is an arc groove.

[0008] As an improvement, positioning planes are respectively provided at two opposite sides of the lens corresponding to the cavity opening and the cavity bottom of the accommodating cavity, and the two positioning planes are arranged in parallel.

[0009] As an improvement, the optical lens is a prism.

[0010] As an improvement, the prism is a square structure, and the accommodating groove arranged at the side of the prism is a straight groove.

[0011] As an improvement, at least two optical lenses are arranged inside the accommodating cavity, and the first supporting portion and the second supporting portion are respectively provided on the inner side wall of the accommodating cavity corresponding to the side edge of each optical lens.

[0012] As an improvement, two optical lenses are provided, one of which is a lens and the other is a prism.

[0013] The utility model also discloses a projection optical machine, which comprises the optical module structure.

[0014] Due to the adoption of the above technical solution, the optical module structure of the utility model includes an optical lens and a plastic shell that surrounds a housing cavity. The plastic shell is combined with the optical lens during injection molding. A first supporting portion and a second supporting portion are respectively provided on the inner side walls on both sides of the cavity opening of the housing cavity. The optical lens is fixedly installed between the first supporting portion and the second supporting portion. Positioning through holes are provided on the cavity bottom or the inner side walls on both sides of the cavity opening of the housing cavity. The projection optical machine of the utility model includes an optical module structure. A first support and a second support are provided relative to each other inside the cavity of the injection mold. The optical lens is arranged inside the cavity and clamped between the first support and the second support. When the plastic shell is injection molded, the optical lens is combined with the plastic shell. After cooling, the optical lens is fixedly installed with the injection molded plastic shell. No assembly operation is required, which can reduce the assembly difficulty and improve the assembly accuracy, and solve the problem that the existing optical devices are difficult to assemble and easy to produce assembly errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the optical module structure of the first embodiment of the utility model;

[0016] Figure 2 It is a cross-sectional structural schematic diagram of the optical module structure of the first embodiment of the utility model;

[0017] Figure 3 It is a schematic cross-sectional structural diagram of the optical module structure of the first embodiment of the utility model in an injection molding state;

[0018] Figure 4 It is a three-dimensional structural schematic diagram of the optical module structure of the second embodiment of the utility model;

[0019] Figure 5 It is a three-dimensional structural schematic diagram of the optical module structure of the third embodiment of the utility model;

[0020] Among them, 10, lens; 11, positioning plane; 20, plastic shell; 21, first supporting part; 22, second supporting part; 23, positioning through hole; 30, first support; 40, second support; 50, prism. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0022] Figures 1 to 5 It is a structural schematic diagram of the optical module structure of the utility model, wherein: Figure 1 The three-dimensional structure diagram of the optical module structure of the first embodiment of the utility model is shown. Figure 2 The cross-sectional structure diagram of the optical module structure of the first embodiment of the utility model is shown. Figure 3 The schematic diagram of the cross-sectional structure of the optical module structure in the first embodiment of the utility model in the injection molding state is shown. Figure 4 The figure shows a three-dimensional structure diagram of the optical module structure of the second embodiment of the utility model. Figure 5 The three-dimensional structure diagram of the optical module structure of the third embodiment of the utility model is shown. For the convenience of description, only the parts related to the utility model are shown in the figure.

[0023] It should be noted that if the utility model involves directional indications (such as up, down, front, back, etc.), such directional indications are only used to explain the relative position relationship between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly; if the utility model involves descriptions of "first", "second", etc., such descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated.

[0024] Depend on Figures 1 to 5 It can be seen that the optical module structure of the utility model is applied to AR equipment, including an optical lens and a plastic shell 20 that encloses a accommodating cavity, and the plastic shell 20 is combined with the optical lens during injection molding; a first supporting portion 21 and a second supporting portion 22 are respectively provided on the inner side walls on both sides of the cavity opening of the accommodating cavity corresponding to the optical lens, and the optical lens is fixedly installed between the first supporting portion 21 and the second supporting portion 22; a positioning through hole 23 is provided on the cavity bottom of the accommodating cavity or the inner side walls on both sides of the cavity opening. Usually, the positioning through hole 23 is arranged on the cavity bottom of the accommodating cavity, which is convenient for mold closing, mold opening and removing the optical module structure from the cavity of the injection mold.

[0025] Combination Figure 3 The molding of the plastic housing 20 and the process of combining the optical lens and the plastic housing 20 are described as follows:

[0026] A first support 30 and a second support 40 are provided relative to each other inside the cavity of the injection mold. During injection molding, the optical lens is arranged inside the cavity and clamped between the first support 30 and the second support 40. Specifically, the first support 30 and the second support 40 are correspondingly arranged inside the cavity part of the movable mold of the injection mold. After the fixed mold and the movable mold of the injection mold are closed, the optical lens is fixed inside the cavity of the injection mold. When the plastic shell 20 is injection molded, the optical lens is combined with the plastic shell 20. After cooling, the optical lens and the plastic shell 20 are fixedly installed together, and no assembly operation is required, which can reduce the difficulty of assembly and improve the assembly accuracy. The optical module structure of the utility model solves the problems of the difficulty of assembling existing optical devices and the easy occurrence of assembly errors.

[0027] Specifically, the first supporting portion 21 and the second supporting portion 22 are bosses arranged on the inner wall of the accommodating cavity, and an accommodating groove adapted to the shape of the side of the optical lens is provided on the boss, which can increase the area of ​​the optical lens embedded in the boss and enhance the connection strength.

[0028] In some other embodiments, the accommodating groove may also be directly disposed on the inner side wall of the accommodating cavity.

[0029] For ease of understanding, the specific structures of the optical module structures of different embodiments are described as follows in conjunction with the accompanying drawings:

[0030] First embodiment

[0031] like Figure 1 , Figure 2 and Figure 3 As shown, the optical lens of the embodiment of the utility model is a lens 10. Specifically, since the lens 10 is a circular structure, the accommodating groove arranged at the side of the lens 10 is an arc groove.

[0032] Typically, the lens 10 is a convex lens, a flyback lens, a concave lens, or the like.

[0033] The lens 10 in the embodiment of the utility model may be provided with one, or may be provided with two or more.

[0034] Second embodiment

[0035] Depend on Figure 4 It can be seen that this embodiment is basically the same as the first embodiment, the difference being that, since the lens 10 is a circular structure, positioning planes 11 are respectively provided at the two opposite sides of the cavity opening and the cavity bottom of the lens 10 corresponding to the accommodating cavity, and the two positioning planes 11 are arranged in parallel, which makes it easier for the first support 30 and the second support 40 to clamp the lens 10 and can also improve the positioning accuracy of the lens 10.

[0036] Third embodiment

[0037] like Figure 5 As shown, this embodiment is basically the same as the first embodiment, except that the optical lens is a prism 50.

[0038] Specifically, since the prism 50 is a square structure, the accommodating grooves arranged at the sides of the prism 50 are straight grooves.

[0039] Fourth embodiment

[0040] This embodiment is basically the same as the first embodiment, the second embodiment and the third embodiment, except that at least two optical lenses are arranged inside the accommodating cavity, and a first supporting portion 21 and a second supporting portion 22 are respectively provided on the inner side wall of the accommodating cavity corresponding to each optical lens.

[0041] Specifically, two optical lenses are provided, one optical lens is a lens 10, and the other optical lens is a prism 50. A first supporting portion 21 and a second supporting portion 22 are respectively provided on the inner side walls on both sides of the cavity opening corresponding to the lens 10 and the prism 50.

[0042] Generally, since the lens 10 is a circular structure, the accommodating groove provided at the side of the lens 10 is an arc groove; since the prism is a square structure, the accommodating groove provided at the side of the prism 50 is a straight groove.

[0043] In some other embodiments, three or more optical lenses are provided.

[0044] The utility model also relates to a projection optical machine, which includes the above optical module structure. The projection optical machine is applied to AR devices, and common AR devices include AR glasses, AR headsets, etc.

[0045] Specifically, the plastic housing 20 of the optical module structure is the outer shell of the projection optical machine.

[0046] In some other embodiments, the plastic housing 20 may also be a part of the housing of the projection light engine, or may be a separate structure from the housing of the projection light engine and may be fixed on the housing of the projection light engine.

[0047] The above descriptions are only some embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An optical module structure, applied to AR equipment, characterized in that: It includes an optical lens and a plastic shell that surrounds a accommodating cavity, wherein the plastic shell is combined with the optical lens during injection molding; a first supporting portion and a second supporting portion are respectively provided on the inner side walls on both sides of the cavity opening of the accommodating cavity corresponding to the side edges of the optical lens, and the optical lens is fixedly installed between the first supporting portion and the second supporting portion; positioning through holes are provided on the cavity bottom or the inner side walls on both sides of the cavity opening of the accommodating cavity.

2. The optical module structure according to claim 1, characterized in that: The first supporting portion and the second supporting portion are bosses arranged on the inner side wall of the accommodating cavity, and an accommodating groove that is adapted to the shape of the side edge of the optical lens is provided on the bosses.

3. The optical module structure according to claim 2, characterized in that: The optical lens is a lens.

4. The optical module structure according to claim 3, characterized in that: The lens is a circular structure, and the accommodating groove arranged at the side of the lens is an arc groove.

5. The optical module structure according to claim 4, characterized in that: Positioning planes are respectively arranged at two opposite sides of the cavity opening and the cavity bottom of the lens corresponding to the accommodating cavity, and the two positioning planes are arranged in parallel.

6. The optical module structure according to claim 2, characterized in that: The optical lens is a prism.

7. The optical module structure according to claim 6, characterized in that: The prism is a square structure, and the accommodating groove arranged at the side of the prism is a straight groove.

8. The optical module structure according to claim 1, characterized in that: At least two optical lenses are arranged inside the accommodating cavity, and the first supporting portion and the second supporting portion are respectively provided on the inner side wall of the accommodating cavity corresponding to the side edge of each optical lens.

9. The optical module structure according to claim 8, characterized in that: There are two optical lenses, one of which is a lens and the other is a prism.

10. A projection optical machine, characterized in that: Comprising the optical module structure as claimed in any one of claims 1 to 9.

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