Optical projection device

Abstract

The utility model discloses an optical projection device, which relates to the technical field of projection structures and comprises a shell, a film, a condensing lens and an imaging lens, the condensing lens and the film are overlapped in the shell, the imaging lens is detachably connected to one end of the shell, and the other end of the shell is detachably connected with the film. The film is located between the condensing lens and the imaging lens; according to the utility model, the imaging lens is detachably connected to the housing, thereby being convenient to disassemble and assemble, a user can replace imaging lenses with different parameters according to actual demands, the purchase cost of the user is greatly reduced, the use flexibility of the projector is higher, and the use experience of the user is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a projection structure technical field, concretely is an optical projection device. BACKGROUND

[0002] The projector is the device that makes the light source after the imaging medium on the silver screen or the wall surface etc. light blocking object surface shows the image.

[0003] The projector usually includes light source, condensing lens for condensing, the film and the imaging lens (imaging lens) for imaging etc. device that are provided with image. The imaging lens in the existing projector is usually connected in the projector in the fixed mode, and the focal length, resolution, precision depth etc. of different imaging lenses are different, therefore the projection performance and projection effect of the projector are also determined by the imaging lens, for example, the high pixel optical projector of the public number for CN208207490U discloses light source, film, condensing lens between light source and film, and imaging lens assembly on the side far from the condensing lens of film, imaging lens assembly includes coaxial first imaging lens, second imaging lens on the side close to the film of first imaging lens and third imaging lens on the side far from the film of first imaging lens, and first imaging lens, second imaging lens and third imaging lens are all circular lenses. The projector adopts multiple imaging lenses fixed on the projector shell to adjust the imaging effect, so the projection effect of the projector is single, when the user wants to experience other projection effects, can only buy other models of projector additionally, then needs more expense, and the use flexibility of the projector is poor, and the user experience is poor. UTILITY MODEL CONTENTS

[0004] The utility model discloses an optical projection device to solve the technical problem of the use flexibility of the projector.

[0005] In order to solve the above technical problem, the utility model provides the following optimization technical scheme:

[0006] An optical projection device, comprising a shell, a film, a condensing lens and an imaging lens, the condensing lens and the film are overlapped and arranged in the shell, the imaging lens is detachably connected to one end of the shell, and the film is located between the condensing lens and the imaging lens.

[0007] Further, one end of the shell is provided with a groove, the other end is provided with a first accommodating groove, the groove is communicated with the first accommodating groove, the imaging lens is detachably connected in the groove, and the condensing lens and the film are sequentially arranged in the first accommodating groove.

[0008] Furthermore, the inner wall of the groove is provided with an internal thread, and the imaging lens is provided with an external thread. The imaging lens is connected to one end of the outer casing by engaging with the internal thread through the external thread.

[0009] Furthermore, a second receiving groove is provided at the bottom of the first receiving groove, the shape and size of the second receiving groove being adapted to the shape and size of the film, and the film is received in the second receiving groove; the condensing lens is disposed in the first receiving groove and is used to restrict the film in the second receiving groove.

[0010] Furthermore, the present invention also includes a gasket, which is fastened to the opening of the first receiving groove and is used to restrict the condensing lens within the first receiving groove.

[0011] Furthermore, the side wall of the opening of the first receiving groove is provided with a notch, which is used to remove the gasket.

[0012] Furthermore, the outer wall of the imaging lens is provided with two slots, which are positioned opposite each other, and the imaging lens is connected to the decorative piece through the slots.

[0013] Furthermore, the outer wall of the housing is provided with connecting ears, and the housing is connected to the external structure through the connecting ears.

[0014] The present invention has the following advantages over the prior art:

[0015] The optical projection device provided by this utility model adopts an imaging lens that is detachably connected to the housing, which is convenient for disassembly and assembly. Users can replace the imaging lens with different parameters according to actual needs, which greatly reduces the user's purchase cost, makes the projector more flexible and versatile, and greatly improves the user experience. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model. Figure 1 .

[0017] Figure 2 This is a schematic diagram of the structure of this utility model. Figure 2 .

[0018] Figure 3 This is an exploded view of the structure of this utility model.

[0019] Figure 4 This is a cross-sectional view of the structure of this utility model.

[0020] Figure 5 This is a schematic diagram of the outer shell of this utility model. Figure 1 .

[0021] Figure 6 This is a schematic diagram of the outer shell of this utility model. Figure 2 .

[0022] Figure 7 This is a cross-sectional view of the outer shell of this utility model.

[0023] In the diagram: 1. Outer shell; 2. Film; 3. Condenser lens; 4. Imaging lens; 5. Groove; 6. First receiving groove; 7. Second receiving groove; 8. Connecting ear; 9. Gasket. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0025] The optical projection device provided in this application includes, but is not limited to, those used as welcome lights and ambient lights.

[0026] See Figures 1-7 An optical projection device includes a housing 1, a film 2, a condenser lens 3, and an imaging lens 4. The condenser lens 3 and the film 2 are overlapped and disposed within the housing 1. The imaging lens 4 is detachably connected to one end of the housing 1. The film 2 is located between the condenser lens 3 and the imaging lens 4.

[0027] In the above technical solution, since the imaging lens 4 is detachably connected to the housing 1, the imaging lens 4 can be easily installed and removed. Users can replace the imaging lens 4 with different parameters according to actual needs, making it more flexible to use. There are various ways to detachably connect the imaging lens 4 to the housing 1, such as by plugging and unplugging, thread, snap-fit, or bolt connection.

[0028] In this embodiment, one end of the outer casing 1 is provided with a groove 5 and the other end is provided with a first receiving groove 6. The groove 5 is connected to the first receiving groove 6. The imaging lens 4 is detachably connected to the groove 5. Specifically, the connecting end of the imaging lens 4 is located in the groove 5 and the lens end protrudes from the groove 5. The condenser lens 3 and the film 2 are sequentially arranged in the first receiving groove 6, and the imaging lens 4 is located on one side of the film 2.

[0029] In this embodiment, the inner wall of the groove 5 is provided with an internal thread, and the imaging lens 4 is provided with an external thread. The imaging lens 4 is connected to one end of the outer shell 1 by the external thread engaging with the internal thread, so as to achieve a detachable connection. The connection structure is simple and easy to manufacture.

[0030] In this embodiment, a second receiving groove 7 is provided at the bottom of the first receiving groove 6. The shape and size of the second receiving groove 7 are adapted to the shape and size of the film 2. The film 2 is received in the second receiving groove 7. Specifically, the second receiving groove 7 is a rectangular groove, and the film 2 is also a rectangular body. The condensing lens 3 is disposed in the first receiving groove 6 and is used to restrict the film 2 in the second receiving groove 7. Specifically, when the film 2 is received in the second receiving groove 7 and the condensing lens 3 is received in the first receiving groove 6, the condensing lens 3 is located at the opening of the second receiving groove 7, thus restricting the film 2 in the second receiving groove 7.

[0031] In this embodiment, the present invention further includes a gasket 9, which is fastened to the opening of the first receiving groove 6 and used to restrict the condensing lens 3 within the first receiving groove 6. Specifically, the gasket 9 has an annular structure, and the outer diameter of the gasket 9 is smaller than the diameter of the first receiving groove 6. Therefore, the gasket 9 can be fastened within the first receiving groove 6, thereby confining the condensing lens 3 within the first receiving groove 6. When the gasket 9 is fastened to the inner wall of the first receiving groove 6, the gasket 9 also abuts against the condensing lens 3, so that the condensing lens 3 is fixed within the first receiving groove 6 without shaking. The end of the gasket 9 away from the condensing lens 3 is provided with a flange, the diameter of which is larger than the diameter of the first receiving groove 6. Therefore, the flange cannot be fastened into the first receiving groove 6, preventing the gasket 9 from being completely fastened into the first receiving groove 6 and unable to be removed.

[0032] In this embodiment, the side wall of the opening of the first receiving groove 6 is provided with a notch (not shown in the figure). The notch is used to remove the gasket 9. Specifically, a rod-shaped auxiliary structure is inserted into the notch, and the end of the rod-shaped auxiliary structure pries the outer wall of the gasket 9, thereby prying up the gasket 9.

[0033] In this embodiment, the outer wall of the imaging lens 4 is provided with two slots (not shown in the figure). The two slots are positioned opposite each other. The imaging lens 4 is connected to the decorative part through the slots. Specifically, when the imaging lens 4 is connected to the decorative part, the two slots are respectively engaged in the two protruding positions of the decorative part, which serves as a limiting connection.

[0034] In this embodiment, the outer wall of the housing 1 is provided with connecting ears 8. The housing 1 is connected to the external structure through the connecting ears 8. Specifically, it is connected to the external structure through bolts or other structures. For example, when used as a welcome light for a car, the housing 1 is connected to the car door. When the car door is opened, the projected image is on the ground. When used as an ambient light, the housing 1 is connected to the wall.

[0035] When the optical projection device is installed, the outer casing 1 covers the light source (lamp body). Specifically, the light source is located on one side of the pad 9. When the light source is turned on, the light from the light source passes through the condenser lens 3, the film 2, and the imaging lens 4 in sequence to form an image.

[0036] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. An optical projection device, characterized in that, The device includes a housing, a film, a condenser lens, and an imaging lens. The condenser lens and the film are stacked inside the housing, and the imaging lens is detachably connected to one end of the housing. The film is located between the condenser lens and the imaging lens.

2. The optical projection device according to claim 1, characterized in that, One end of the housing is provided with a groove and the other end is provided with a first receiving groove. The groove is connected to the first receiving groove. The imaging lens is detachably connected to the groove. The condenser lens and the film are sequentially arranged in the first receiving groove.

3. An optical projection device according to claim 2, characterized in that, The inner wall of the groove is provided with an internal thread, and the imaging lens is provided with an external thread. The imaging lens is connected to one end of the outer shell by the external thread engaging with the internal thread.

4. An optical projection device according to claim 2, characterized in that, The bottom of the first receiving groove is provided with a second receiving groove, the shape and size of the second receiving groove are adapted to the shape and size of the film, and the film is received in the second receiving groove; the condensing lens is disposed in the first receiving groove and is used to restrict the film in the second receiving groove.

5. An optical projection device according to claim 2, characterized in that, It also includes a gasket that is snapped into the opening of the first receiving groove and used to confine the condensing lens within the first receiving groove.

6. An optical projection device according to claim 5, characterized in that, The opening of the first receiving groove has a notch on its side wall, which is used to remove the gasket.

7. An optical projection device according to claim 1, characterized in that, The outer wall of the imaging lens is provided with two slots, which are positioned opposite each other, and the imaging lens is connected to the decorative part through the slots.

8. An optical projection device according to claim 1, characterized in that, The outer wall of the housing is provided with connecting ears, and the housing is connected to the external structure through the connecting ears.

Images