Film watching optical mechanism and automobile backseat film watching equipment

Abstract

The utility model discloses a film-watching optical mechanism and automobile backseat film-watching equipment, and relates to the optical image display field, the film-watching optical mechanism comprises a display screen, a reflection type polaroid and a reflection lens, the reflection type polaroid is obliquely arranged relative to the display screen, the reflection lens is arranged on one side of the reflection type polaroid, and the reflection lens is arranged on the other side of the reflection type polaroid. A picture image of the display screen is irradiated to the reflective polaroid to be totally reflected, reflected light enters the reflecting lens, the reflecting lens reversely reflects the picture image, the picture image enters human eyes through the reflective polaroid, a virtual image of the picture image of the display screen is formed in the human eyes, and the film watching optical mechanism is installed in the shell. According to the automobile backseat film watching device, the impression distance is increased, the impression effect is improved, hand holding is not needed, a comfortable and lasting film watching environment is provided for people on the backseat, the riding experience of the people on the backseat is improved, the overall structure is compact, the size is small, vehicle-mounted use is convenient, and the occupied space in an automobile is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to optical image display technical field especially, is related to a kind of viewing optical mechanism and car back seat viewing equipment. BACKGROUND

[0002] New energy vehicles and intelligent driving are more and more popular by the public, the reason is that car is no longer a simple means of transport, but an intelligent device integrated with various functions, and the personnel in the back seat of the car will mostly watch video to kill the boredom of the journey during driving, but the effect of watching video by conventional mobile phone is poor, with the rapid development of science and technology, many people will choose VR glasses to watch video. Patent application No. CN201711402617.6 discloses a viewing equipment, which comprises a frame, the frame is provided with a screen placing area and a viewing area. An optical assembly is provided inside the frame, the optical assembly is arranged between the screen placing area and the viewing area, and the optical assembly comprises a mirror module. The mirror module comprises at least one first mirror and a second mirror, the first mirror is a half mirror or a full mirror. The mirror module is arranged in front of the screen. The mirror module provides the received image after one or more reflections to the human eye, and the second mirror is a half mirror or a full mirror. The first mirror reflects the received image to the second mirror, and the second mirror reflects the image to the human eye. In the technical solution, the image content is reflected multiple times by the mirror module, so as to prevent the light from directly entering the human eye and reduce the glare.

[0003] The existing viewing equipment uses a mirror module to reflect the image, and when arranging the structure, different mirrors are arranged staggered to ensure that the reflected image enters the human eye, which leads to that the structure is not compact, the volume is large, and a lot of space in the car is occupied, which is inconvenient for use in the car. Therefore, the utility model discloses a viewing optical mechanism and car back seat viewing equipment to solve the above problems. UTILITY MODEL CONTENTS

[0004] Therefore, it is necessary to provide a viewing optical mechanism and a rear seat viewing device for a vehicle to solve the above technical problems.

[0005] To solve the above technical problems, the utility model adopts the following technical scheme:

[0006] A viewing optical mechanism comprises a display screen, a reflective polarizer and a reflecting mirror, the reflective polarizer is arranged obliquely relative to the display screen, the reflecting mirror is arranged on one side of the reflective polarizer, the picture image of the display screen is totally reflected on the reflective polarizer and the reflected light enters the reflecting mirror, the reflecting mirror inversely reflects the picture image and the picture image enters the human eye through the reflective polarizer, and the virtual image of the picture image of the display screen is formed in the human eye.

[0007] As a preferred embodiment of the viewing optical mechanism, the reflective polarizer and the reflecting mirror are both arc surface structures.

[0008] As a preferred embodiment of the viewing optical mechanism, the display screen, the reflective polarizer and the reflecting mirror form a triangular structure.

[0009] As a preferred embodiment of the viewing optical mechanism, the display screen is a liquid crystal display screen that emits linearly polarized light.

[0010] As a preferred embodiment of the viewing optical mechanism, the oblique angle of the reflective polarizer relative to the display screen is 45 degrees, the light emitted by the display screen is incident on the reflective polarizer at an angle of 45 degrees, and the light is inversely reflected by the reflecting mirror and then incident on the reflective polarizer at an angle of 135 degrees.

[0011] As a preferred embodiment of the viewing optical mechanism, the display screen is horizontally placed, the reflective polarizer is inclined at an angle of 135 degrees relative to the horizontal line, the display screen is located above the reflective polarizer, and the reflecting mirror is arranged on the low end side of the reflective polarizer.

[0012] As a preferred embodiment of the viewing optical mechanism provided by the utility model, the reflecting lens comprises a reflecting mirror and a 1 / 4 wave plate, the 1 / 4 wave plate is attached to the reflecting mirror, the linearly polarized light reflected by the reflecting polarizer becomes clockwise circularly polarized light after passing through the 1 / 4 wave plate, and becomes counterclockwise circularly polarized light after being reflected by the reflecting mirror, and becomes linearly polarized light again after passing through the 1 / 4 wave plate, and the angle between the linearly polarized light and the reflecting polarizer is the same, and the light enters the human eye through the reflecting polarizer.

[0013] A rear seat viewing device for a vehicle comprises the viewing optical mechanism and a shell, the viewing optical mechanism is installed in the shell, and the shell is fixedly installed on a front seat of the vehicle.

[0014] As a preferred embodiment of the viewing optical mechanism provided by the utility model, the bottom of the shell is fixedly connected with a U-shaped mounting bracket, and the U-shaped mounting bracket is fixed to the rear side of the headrest of the front seat of the vehicle.

[0015] As a preferred embodiment of the viewing optical mechanism provided by the utility model, one side of the shell is provided with an ocular lens, the human eye watches the virtual image of the display screen through the ocular lens, and a switch button is installed below the ocular lens.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1、The viewing optical mechanism provided by the utility model reflects the picture image of the display screen to the reflecting lens through the reflecting polarizer, and the picture image enters the human eye through the reflecting polarizer after being inversely reflected by the reflecting lens, so that the human eye watches a virtual image that is enlarged at a long distance, the viewing distance and the viewing effect are improved, the reflecting polarizer and the reflecting lens do not need to be arranged staggeredly, the structure is compact, the volume is small, and the vehicle-mounted use is facilitated.

[0018] 2、The rear seat viewing device for the vehicle provided by the utility model fixes the shell provided with the viewing optical mechanism on the front seat of the vehicle without wearing and without being held by hand, the influence of dazzling and dizziness on the rear seat personnel is reduced, the rear seat personnel will not feel uncomfortable, a comfortable and long-lasting viewing environment is provided for the rear seat personnel, the riding experience of the rear seat personnel is improved, the overall structure is compact, the volume is small, the vehicle-mounted use is facilitated, and the occupied space in the vehicle is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the scheme in the utility model, the drawings needed in the embodiment description will be briefly introduced below, and obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to the drawings without creating labor.

[0020] Figure 1 The whole structure schematic diagram of the viewing optical mechanism is provided in the utility model.

[0021] Figure 2 The structure schematic diagram of the reflective polaroid in the viewing optical mechanism is provided in the utility model.

[0022] Figure 3 The structure schematic diagram of the reflecting lens in the viewing optical mechanism is provided in the utility model.

[0023] Figure 4 The light irradiation path principle schematic diagram of the viewing optical mechanism is provided in the utility model.

[0024] Figure 5 The whole structure schematic diagram of the automobile rear seat viewing equipment is provided in the utility model.

[0025] The mark description in the drawing is as follows:

[0026] 1, display screen; 2, reflective polaroid; 3, reflecting lens; 31, reflecting mirror; 32, 1 / 4 wave plate; 4, transparent glass; 5, shell; 6, U-shaped mounting frame; 7, ocular lens; 8, switch button. DETAILED DESCRIPTION

[0027] In order for the personnel in the technical field to better understand the utility model scheme, the technical scheme in the utility model embodiment will be described clearly and completely in the following with reference to the drawings in the utility model embodiment. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor should belong to the scope of the utility model protection.

[0028] As described in the background, in the process of driving, the personnel in the rear seat of the automobile mostly watch videos to alleviate the boredom of the journey. However, the conventional mobile phone has poor video watching effect. With the rapid development of science and technology, many people will choose VR glasses to watch videos. The existing viewing equipment adopts the optical structure composed of reflecting mirror modules to reflect the image. When arranging the structure, different reflecting lenses need to be arranged staggeredly to ensure that the reflected image enters the human eye. This leads to the structure arrangement not being compact, the volume being large, and occupying a large space in the car, which is inconvenient for use in the car.

[0029] In order to solve this technical problem, the utility model provides a viewing optical mechanism, which is applied to the optical image display field.

[0030] Specifically, please refer to Figures 1-4The viewing optical mechanism, specifically comprising a display screen 1, a reflective polaroid 2 and a reflecting lens 3, the reflective polaroid 2 is arranged obliquely relative to the display screen 1, the reflecting lens 3 is arranged on one side of the reflective polaroid 2, the picture image of the display screen 1 is totally reflected on the reflective polaroid 2 and the reflected light enters the reflecting lens 3, the reflecting lens 3 inversely reflects the picture image and the picture image enters the human eye through the reflective polaroid 2, and the virtual image of the picture image of the display screen 1 is formed in the human eye.

[0031] The viewing optical mechanism provided by the utility model, through the reflective polaroid 2, the picture image of the display screen 1 is totally reflected on the reflecting lens 3, and after inversely reflecting through the reflecting lens 3, the picture image enters the human eye through the reflective polaroid 2, so that the human eye watches a virtual image of a long distance, the viewing distance and the viewing effect are improved, the reflective polaroid 2 and the reflecting lens 3 do not need to be arranged staggeredly, the structure is compact, the volume is small, and the vehicle-mounted use is facilitated.

[0032] In order to solve the problems existing in the prior art, the utility model provides a kind of automobile rear seat viewing equipment, which is applied to the field of automobile entertainment cinema.

[0033] Specifically, please refer to Figure 5 A kind of automobile rear seat viewing equipment, it includes above-mentioned viewing optical mechanism and shell 5, the viewing optical mechanism is installed in shell 5, and the shell 5 is fixedly installed on the front seat of car.

[0034] The automobile rear seat viewing equipment provided by the utility model does not need to be worn and does not need to be held by fixing the shell 5 with the viewing optical mechanism on the front seat of car, reduces the influence of dizziness and dazzle on rear seat personnel, does not cause discomfort to rear seat personnel, provides a comfortable and lasting viewing environment for rear seat personnel, improves the ride experience of rear seat personnel, the overall structure is compact, the volume is small, and the vehicle-mounted use is facilitated, and the occupied space in car is reduced.

[0035] In order to enable personnel in the technical field to better understand the utility model scheme, the technical scheme in the embodiment of the utility model will be clearly and completely described in combination with drawings below.

[0036] It should be noted that, in the case of no conflict, the embodiments in the utility model and the features and technical solutions in the embodiments can be combined with each other.

[0037] It should be noted that: similar signs and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0038] Please refer to Figures 1-2The application provides a viewing optical mechanism, which comprises a display screen 1, a reflective polarizer 2 and a reflecting lens 3. The reflective polarizer 2 is arranged to be inclined to the display screen 1, and the reflecting lens 3 is arranged on one side of the reflective polarizer 2. The picture image of the display screen 1 is totally reflected on the reflective polarizer 2 and enters the reflecting lens 3, the reflecting lens 3 inversely reflects the picture image and the picture image enters the human eye through the reflective polarizer 2, and the virtual image of the picture image of the display screen 1 is formed in the human eye.

[0039] In the example, the reflective polarizer 2 and the reflecting lens 3 are both arc structures, and the reflective polarizer 2 is a special optical film which takes transparent glass 4 as a carrier, that is, the reflective polarizer 2 is attached to the transparent glass 4. The reflective polarizer 2 can selectively transmit polarized light in a certain direction and reflect polarized light in another direction. By utilizing the polarization characteristics of light, the light in different polarization directions is selectively processed through interference, reflection and transmission and other phenomena. Specifically, the reflective polarizer 2 allows polarized light in a specific direction to pass through, and polarized light in a direction perpendicular to the transmission direction is reflected back. The management of the polarized light can be optimized, and the display effect is clearer. In the example, the optical performance is optimized by utilizing the characteristics of the reflective polarizer 2, and a more realistic visual experience is provided.

[0040] The display screen 1, the reflective polarizer 2 and the reflecting lens 3 form a triangular structure, so that the reflective polarizer 2 and the reflecting lens 3 do not need to be arranged staggeredly, the structure is compact, the volume is small, and the vehicle-mounted use is facilitated.

[0041] The viewing optical mechanism provided in the embodiment 1 is further optimized. Specifically, as shown in the figure, Figures 1-4 The display screen 1 is a liquid crystal display screen 1 which emits linearly polarized light, the inclination angle of the reflective polarizer 2 to the display screen 1 is 45°, the light emitted by the display screen 1 is incident on the reflective polarizer 2 at an angle of 45°, and after being inversely reflected by the reflecting lens 3, the light is incident on the reflective polarizer 2 at an angle of 135°. Specifically, the display screen 1 is horizontally placed, the reflective polarizer 2 is inclined to the horizontal line at an angle of 135°, the display screen 1 is located above the reflective polarizer 2, and the reflecting lens 3 is arranged on the low end side of the reflective polarizer 2. The reflecting lens 3 comprises a reflecting mirror 31 and a 1 / 4 wave plate 32, the 1 / 4 wave plate 32 is attached to the reflecting mirror 31, and the surface of the reflecting mirror 31 away from the 1 / 4 wave plate 32 is coated, so that the reflecting mirror 31 can totally reflect. The linearly polarized light reflected by the reflective polarizer 2 becomes clockwise circularly polarized light after passing through the 1 / 4 wave plate 32, and becomes counterclockwise circularly polarized light after being reflected by the reflecting mirror 31. Then, the linearly polarized light becomes linearly polarized light again after passing through the 1 / 4 wave plate 32, and the angle between the linearly polarized light and the reflective polarizer 2 is the same. The light enters the human eye through the reflective polarizer 2.

[0042] When the display screen 1 works, the path of the light is as follows: Figure 4As shown, the display screen 1 emits 45° linearly polarized light, which is incident on the 135° reflective polarizer 2, and total reflection occurs, and the reflected light is also 45° linearly polarized light, which passes through the 1 / 4 wave plate 32 attached to the mirror 31 and becomes clockwise circularly polarized light, which is reflected by the mirror 31 and becomes counterclockwise circularly polarized light, and then passes through the 1 / 4 wave plate 32 and becomes 135° linearly polarized light, at which time the linearly polarized light and the reflective polarizer 2 are at the same angle, and the light passes through the reflective polarizer 2 and enters the eye.

[0043] Please refer to Figure 5 , provides a kind of car back seat viewing equipment, it includes the viewing optical mechanism and shell 5 in embodiment 2, viewing optical mechanism is installed in shell 5, shell 5 is fixedly installed on car front seat, display screen 1 in viewing optical mechanism, reflective polarizer 2 and mirror piece 3 are all fixed in frame structure, and frame structure is fixedly connected with shell 5.Specifically, the bottom of shell 5 is fixedly connected with U-shaped mounting bracket 6, U-shaped mounting bracket 6 is fixed to the rear side of the headrest of car front seat, to facilitate the rear seat personnel to watch film.Upper side of shell 5 is equipped with eyepiece 7, eyepiece 7 is installed in the side of the human eye of viewing optical mechanism, human eye watches the virtual image of display screen 1 through eyepiece 7, and switch button 8 is installed below the eyepiece 7 of shell 5, and the opening and closing of display screen 1 is controlled by switch button 8, and rear seat passengers can directly press switch button 8 to open display screen 1, so as to watch film.

[0044] The working principle of the viewing optical mechanism and the car back seat viewing equipment provided by the utility model is as follows: the U-shaped mounting bracket 6 on the shell 5 is fixed to the rear side of the headrest of the front seat, the eyepiece 7 faces the rear seat, the display screen 1 is turned on by pressing the switch button 8, the picture image of the display screen 1 is totally reflected to the mirror piece 3 through the reflective polarizer 2, and then enters the human eye after being inversely reflected by the mirror piece 3 and passing through the reflective polarizer 2, so that the human eye watches a virtual image that is enlarged at a long distance, the viewing distance and the viewing effect are improved, the reflective polarizer 2 and the mirror piece 3 do not need to be arranged staggeredly, it is not necessary to hold them by hand, the dazzling and dizziness caused to the rear seat personnel are reduced, the rear seat personnel will not feel uncomfortable, a comfortable and long-lasting viewing environment is provided for the rear seat personnel, the riding experience of the rear seat personnel is improved, the overall structure is compact, the volume is small, and the car-mounted use is facilitated, and the occupied space in the car is reduced.

[0045] In the utility model, unless another definite provision and limitation, the terms "mount", "link", "connect", "fix" and so on terms should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electric connection or each other can communicate;Can be direct connection, also can indirectly connect through intermediate medium, can be two element internal communication or two element mutual action relation, unless another definite limitation.For ordinary skilled person in the art, can understand the concrete meaning of above-mentioned terms in the utility model according to specific circumstances.

[0046] Obviously, the above-described embodiments are only a part of the embodiments of the utility model, and not all the embodiments, and the preferred embodiments of the utility model are given in the drawings, but do not limit the patent range of the utility model.The utility model can be realized in many different forms, and contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive.Although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical scheme recorded in the foregoing each specific embodiment can be modified, or part of the technical features can be replaced equivalently.The equivalent structure made by using the contents of the utility model specification and drawings, direct or indirect use in other related technical fields, are also within the patent protection range of the utility model.

Claims

1. A viewing optical mechanism characterized by, It includes a display screen, a reflective polarizer and a reflecting mirror, the reflective polarizer is arranged obliquely relative to the display screen, the reflecting mirror is arranged on one side of the reflective polarizer, the picture image of the display screen is totally reflected on the reflective polarizer and the reflected light enters the reflecting mirror, the reflecting mirror inversely reflects the picture image and the picture image enters the human eye through the reflective polarizer, and the virtual image of the picture image of the display screen is formed in the human eye.

2. A viewing optical mechanism according to claim 1, wherein The reflective polarizer and the reflecting mirror are both arc structures.

3. The viewing optical system of claim 1, wherein The display screen, the reflective polarizer and the reflecting mirror form a triangular structure.

4. The viewing optical system of claim 1, wherein The display screen is a liquid crystal display screen emitting linearly polarized light.

5. A viewing optical system according to claim 4, wherein The angle of the reflective polarizer relative to the display screen is 45°, the light emitted by the display screen is incident on the reflective polarizer at an angle of 45°, and after being inversely reflected by the reflecting mirror, the light is incident on the reflective polarizer at an angle of 135°.

6. A viewing optical system according to claim 5, wherein The display screen is horizontally placed, the reflective polarizer is inclined at an angle of 135° relative to the horizontal line, and the display screen is located above the reflective polarizer, and the reflecting mirror is arranged on the low end side of the reflective polarizer.

7. A viewing optical system according to claim 6, wherein The reflecting mirror includes a reflecting mirror and a 1 / 4 wave plate, the 1 / 4 wave plate is attached to the reflecting mirror, the linearly polarized light reflected by the reflective polarizer becomes clockwise circularly polarized light through the 1 / 4 wave plate, and becomes counterclockwise circularly polarized light through the reflecting mirror, and becomes linearly polarized light through the 1 / 4 wave plate again, and the angle of the linearly polarized light and the reflective polarizer is the same, and the light enters the human eye through the reflective polarizer.

8. A car back seat viewing device, characterized in that: It includes the viewing optical mechanism and a shell, the viewing optical mechanism is installed in the shell, and the shell is fixedly installed on the front seat of the car.

9. The rear seat video viewing device for an automobile of claim 8, wherein, The bottom of the shell is fixedly connected with a U-shaped mounting bracket, and the U-shaped mounting bracket is fixed to the rear side of the headrest of the front seat of the car.

10. The rear seat video viewing device for an automobile of claim 8, wherein, One side of the shell is provided with an eye lens, the human eye watches the virtual image of the display screen through the eye lens, and a switch button is installed below the eye lens. The bottom of the shell is fixedly connected with a U-shaped mounting bracket, and the U-shaped mounting bracket is fixed to the rear side of the headrest of the front seat of the car. One side of the shell is provided with an eye lens, the human eye watches the virtual image of the display screen through the eye lens, and a switch button is installed below the eye lens.

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