Projection lens device and projection equipment

Abstract

The invention relates to the technical field of display, and discloses a projection lens device and projection equipment, and the projection lens device comprises at least one long-focus lens module and at least one short-focus lens module. Image light entering the projection lens device forms a first projection picture if the image light is emitted through the target long-focus lens module, and forms a second projection picture if the image light is emitted through the target short-focus lens module; the first projection picture and the second projection picture are located in different directions in the projection space. The projection equipment can have different projection distances in different directions, can project projection pictures meeting a wide format, namely ultra-short-distance large-picture projection and long-distance large-picture projection, and can realize independent and high-efficiency projection display, so that the user experience is improved.

Description

Technical Field

[0001] This application relates to the field of projection display technology, and in particular to a projection lens device and projection equipment. Background Technology

[0002] With the development of automotive intelligence and smart projection technology, new smart cars are now typically equipped with smart projection devices. Adding projection equipment to cars allows users to watch movies inside, providing a new way to entertain and learn. Passengers can use projection devices to watch movies, video chat, project documents, hold meetings, play games, and more, greatly satisfying their entertainment and interactive needs while traveling. However, conventional vehicle projection equipment has limitations in projection direction and area. While gimbal rotation technology is commonly used to achieve multi-directional projection within a limited space, the area of ​​the projected image is still relatively limited. Therefore, how to project a large area of ​​image from multiple directions within a limited space is a problem that urgently needs to be solved. Summary of the Invention

[0003] This application provides a projection lens device that can be used in projection equipment to project wide-format images from different positions and at different projection distances.

[0004] In a first aspect, this application provides a projection lens device, which includes at least one telephoto lens module and at least one short-focus lens module. A concave or convex reflector is disposed at the light-emitting portion of the target short-focus lens module. The target short-focus lens module is any one of the at least one short-focus lens module, and the target telephoto lens module is any one of the at least one telephoto lens module. Wherein:

[0005] Image light entering the projection lens device forms a first projected image if it exits through the target telephoto lens module, and a second projected image if it exits through the target short-focal-length lens module; the first projected image and the second projected image are located in different positions in the projection space.

[0006] In some embodiments,

[0007] The projection lens device also includes a common module and a reflective component. The image light is processed by the common module. When the reflective component is in a first state, the processed light enters the target telephoto lens module and exits after passing through the target telephoto lens module. When the reflective component is in a second state, the processed light enters the target short-focus lens module and exits after passing through the target short-focus lens module. Alternatively, the reflective component includes a specific reflective element. The processed light is partially transmitted or reflected by the specific reflective element to the target telephoto lens module, exits after passing through the target telephoto lens module, and is partially reflected or transmitted to the target short-focus lens module, exits after passing through the target short-focus lens module.

[0008] Alternatively, the projection lens device may also include a specific reflective element, through which image light entering the projection lens device is partially transmitted or reflected to the target telephoto lens module, exits after passing through the target telephoto lens module, and is partially reflected or transmitted to the target short-focus lens module, exits after passing through the target short-focus lens module.

[0009] In some embodiments,

[0010] The reflection assembly includes a target reflection element. In the first state, the target reflection element is not located in the optical path of the processed light, and the processed light directly enters the target telephoto lens module. In the second state, the target reflection element is located in the optical path of the processed light, and the processed light enters the target short-focus lens module after being reflected by the target reflection element.

[0011] Alternatively, the reflective assembly includes a target reflective element, which includes a transmission area and a reflection area. In the first state, the transmission area of ​​the target reflective element is located in the optical path of the processed light, and the processed light enters the target telephoto lens module through the transmission area. In the second state, the reflector of the target reflective element is located in the optical path of the processed light, and the processed light enters the target short-focus lens module after being reflected by the reflection area.

[0012] Alternatively, the reflective assembly includes a target reflective element. In the first state, the target reflective element forms a first angle with respect to the optical axis of the processed light, and the processed light is transmitted through the target reflective element and then enters the target telephoto lens module. In the second state, the target reflective element forms a second angle with respect to the optical axis of the processed light, and the processed light is reflected by the target reflective element and then enters the target short-focus lens module. The first angle is greater than the second angle.

[0013] Alternatively, the reflective assembly includes a first reflective element and a second reflective element. In the first state, the first reflective element is located in the optical path of the processed light, and the processed light is reflected by the first reflective element and then enters the target telephoto lens module. In the second state, the second reflective element is located in the optical path of the processed light, and the processed light is reflected by the second reflective element and then enters the target short-focus lens module.

[0014] In some embodiments,

[0015] When the optical axis of the target telephoto lens module or the target short focal length lens module is on the same straight line as the optical axis of the common module, and the optical axis of the target short focal length lens module or the target telephoto lens module is parallel to the optical axis of the common module, the reflective assembly includes a target reflective element, and the target short focal length lens module or the target telephoto lens module also includes a reflective element to reflect the light reflected by the target reflective element again.

[0016] Alternatively, when the optical axis of the target telephoto lens module or the target short focal length lens module is perpendicular to the optical axis of the common module, and the optical axis of the target short focal length lens module or the target telephoto lens module is parallel to the optical axis of the common module, and forms a U-shape with the common module, the reflective assembly includes a first reflective element and a second reflective element. The target short focal length lens module or the target telephoto lens module also includes a reflective element to reflect the light reflected by the first reflective element and the second reflective element again.

[0017] Alternatively, when the optical axes of the target short-focus lens module and the target long-focus lens module are parallel to the optical axis of the common module and form a U-shape with the common module, or when the optical axes of the target short-focus lens module and the target long-focus lens module are perpendicular to the optical axis of the common module, the reflective assembly includes a first reflective element and a second reflective element, and the target short-focus lens module and / or the target long-focus lens module also includes a reflective element to reflect the light reflected by the first reflective element and / or the second reflective element again.

[0018] In some embodiments, the projection lens device includes a common module and an aperture corresponding one-to-one with at least one telephoto lens module and at least one short-focus lens module;

[0019] The image light is reduced and shifted after passing through the shared module, so that it passes through the aperture corresponding to the target telephoto lens module or the target short focal length lens module, enters the target telephoto lens module or the target short focal length lens module, and exits after passing through the target telephoto lens module or the target short focal length lens module.

[0020] In some embodiments, the common module includes at least one lens with diopter, and / or the common module includes an aperture and a lens group disposed between the aperture and the display chip.

[0021] In some embodiments, the projection lens device includes a movable slider device and a lens mounting bracket, wherein at least one telephoto lens module and at least one short-focus lens module are fixed on the lens mounting bracket and connected to the movable slider device.

[0022] When the movable slider device slides the target telephoto lens module into the optical path of the image light, the image light enters the target telephoto lens module and exits through the target telephoto lens module; when the movable slider device slides the target short focal length lens module into the optical path of the image light, the image light enters the target short focal length lens module and exits through the target short focal length lens module.

[0023] In some embodiments, the projection lens device further includes a gimbal corresponding to the target telephoto lens module and / or the target short-focal-length lens module, for adjusting the projection position of the corresponding projection image in the projection space.

[0024] In some embodiments,

[0025] The field of view of the target short focal length lens module is in the range of 140 degrees to 200 degrees, and the field of view of the target telephoto lens is in the range of 10 degrees to 70 degrees.

[0026] And / or, the ratio of the focal length of the target telephoto lens to the focal length of the target short-focus lens is in the range of 4 to 15;

[0027] And / or, the projection ratio of the target short-focus lens module is greater than 0.05 and less than 0.3, and the projection ratio of the target long-focus lens module is greater than 0.7 and less than 2.2.

[0028] In some embodiments, when the ratio of the projection distance between the first projection image and the second projection image is in the range of 4 to 10, the ratio of the width dimension of the first projection image and the second projection image is in the range of 0.8 to 5.

[0029] In some embodiments, the projection space is a car space, a first projected image is located in a first position of the projection space, and a second projected image is located in a second position of the projection space. The first position and the second position point to the front or rear or side window or bottom or roof or seat back of the car or the ground on which the car is located.

[0030] Secondly, this application provides a projection device, which includes a light source device, a display chip, and the projection lens device described in any one of the first aspects;

[0031] A light source device used to generate light from a light source;

[0032] A display chip is used to modulate light from a light source to obtain image light.

[0033] In some embodiments, the imaging chip is provided with a movable device, wherein:

[0034] The movable device moves the display chip to a first position, so that image light enters the projection lens device and exits through the target telephoto lens module; the movable device moves the display chip to a second position, so that image light enters the projection lens device and exits through the target short-focal-length lens module.

[0035] In some embodiments,

[0036] When the projection device receives a control command from the user to form the first projected image, the projection device controls the image light entering the projection lens device to be emitted through the target telephoto lens module.

[0037] When the projection device receives a control command from the user to form a second projected image, the projection device controls the image light entering the projection lens device to be emitted through the target short-throw lens module; wherein, the user gives instructions through voice, gesture, or remote control.

[0038] Thirdly, this application provides a vehicle interaction system, including the projection device described in any of the second aspects, and further comprising:

[0039] The triggering unit is used to detect information in the projection space to generate control commands, or to detect user operations to generate and send control commands; the triggering unit includes one or more of the following: image sensor, laser detection sensor, infrared detection sensor, position sensor, angle sensor, wireless sensing device, brightness sensor, voice acquisition device, and remote control;

[0040] A projection device is used to receive control commands and project to form a first projected image and / or a second projected image, wherein the second projected image is located on the roof of the vehicle.

[0041] The projection device of this application can project wide-format images from different positions and at different projection distances, namely ultra-short distance large-screen projection and long distance large-screen projection, and can achieve independent and high-efficiency projection display, thereby improving the user experience. Attached Figure Description

[0042] The above and other objects, features, and advantages of this application will become more apparent from the more detailed description of the embodiments of this application in conjunction with the accompanying drawings. The accompanying drawings are used to provide a further understanding of the embodiments of this application and constitute a part of the specification. They are used together with the embodiments of this application to explain this application and do not constitute a limitation thereof. In the drawings, the same reference numerals generally represent the same components or steps. Wherein:

[0043] Figure 1 This is a schematic diagram of the internal structure of a projection lens device in a vehicle space according to one embodiment of this application;

[0044] Figure 2 This is a schematic diagram of a projection lens device in one embodiment of this application;

[0045] Figure 3 This is a schematic diagram of the projection lens device in another embodiment of this application;

[0046] Figure 4 This is a schematic diagram of the projection lens device in another embodiment of this application;

[0047] Figure 5 This is a schematic diagram of the projection lens device in another embodiment of this application;

[0048] Figure 6 This is a schematic diagram of the projection lens device in another embodiment of this application;

[0049] Figure 7 This is a schematic diagram of the projection lens device in another embodiment of this application;

[0050] Figure 8 This is a schematic diagram of tilt-shift imaging in one embodiment of this application;

[0051] Figure 9 This is a schematic diagram of the tilt-shift imaging range in one embodiment of this application;

[0052] Figure 10 This is a schematic diagram of the projection lens device in another embodiment of this application;

[0053] Figure 11 This is a schematic diagram of the projection lens device in another embodiment of this application;

[0054] Figure 12 This is a schematic diagram of the projection lens device in another embodiment of this application;

[0055] Figure 13 This is a schematic diagram of the projection lens device in another embodiment of this application;

[0056] Figure 14 This is a schematic diagram of the projection lens device in another embodiment of this application;

[0057] Figure 15 This is a schematic diagram of a projection device in one embodiment of this application. Detailed Implementation

[0058] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in 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, and not all embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this application. Furthermore, although the disclosure in this application is introduced according to one or several exemplary examples, it should be understood that each aspect of these disclosures can also constitute a complete technical solution on its own. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0059] In the embodiments of this application, words such as "exemplarily" and "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as an "example" in this application should not be construed as being better or more advantageous than other embodiments or designs. Rather, the use of the word "example" is intended to present the concept in a specific manner.

[0060] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms “first,” “second,” and similar terms used in this application do not indicate any order, quantity, or importance, but are used solely for distinguishing descriptions. Terms such as “comprising” or “including” mean that an element or object preceding the term encompasses the elements or objects listed following the term and their equivalents, without excluding other elements or objects. The term “and / or” includes any and all combinations of one or more associated listed items.

[0061] To fully understand this application, a detailed description is provided below to illustrate the technical solutions of this application. Preferred embodiments of this application are described in detail below; however, in addition to these detailed descriptions, this application may have other implementation methods.

[0062] This application provides a projection lens device, which includes at least one telephoto lens module and at least one short-focus lens module. A concave or convex reflector is disposed at the light-emitting portion of the target short-focus lens module. The target short-focus lens module is any one of the at least one short-focus lens module, and the target telephoto lens module is any one of the at least one telephoto lens module. Wherein:

[0063] Image light incident on the projection lens device forms a first projected image if it exits through the target telephoto lens module, and a second projected image if it exits through the target short-throw lens module; the first and second projected images are located in different positions in the projection space. This projection lens device has both a telephoto lens module and a short-throw lens module, which can project a large area of ​​image from different positions even in a relatively limited projection space, without being limited by the projection distance.

[0064] The projection space can refer to the interior space of a room, car, or other similar space where the projection equipment is located; it can also be the outdoor space where the projection equipment is located, but with a carrier (screen, wall, etc.) to support the projected image. The first and second projected images can display the same content simultaneously, or they can display different content simultaneously; alternatively, the first projected image can be displayed in the first time period, and the second projected image can be displayed in the second time period.

[0065] In some embodiments, the projection space is a car space, a first projected image is located at a first position in the projection space, and a second projected image is located at a second position in the projection space. The first and second positions point to the front or rear of the car, a side window, the bottom surface, the roof, the seat back, or the ground where the car is located; preferably, the first position points to the front or rear of the car, and the second position points to the roof of the car. For example, as... Figure 1 The diagram shown is a schematic representation of a projection space inside a car according to this embodiment. Figure 1 The example shows the first and second orientations, as well as the positions of the first and second projected images.

[0066] Optionally, when there are two or more telephoto lens modules, the orientation or position of the first projected image corresponding to each telephoto lens module is different; when there are two or more short-throw lens modules, the orientation or position of the second projected image corresponding to each short-throw lens module is different. Telephoto lens modules and short-throw lens modules can be collectively referred to as lens modules.

[0067] In some embodiments, the field of view of the target short-focal-length lens module is in the range of 140 degrees to 200 degrees, and the field of view of the target telephoto lens is in the range of 10 degrees to 70 degrees. Preferably, the field of view of the target short-focal-length lens module can be 175 degrees, and the field of view of the target telephoto lens can be 50 degrees.

[0068] Optionally, the ratio of the focal length of the target telephoto lens to the focal length of the target short-focal-length lens is in the range of 4 to 15.

[0069] Optionally, the projection ratio of the target short-focal-length lens module is greater than 0.05 and less than 0.3, and the projection ratio of the target long-focal-length lens module is greater than 0.7 and less than 2.2.

[0070] In some embodiments, when the ratio of the projection distances of the first projected image to the second projected image is in the range of 4 to 10, the ratio of the width dimensions of the first projected image to the second projected image is in the range of 0.8 to 5. The projection distance can refer to the distance from the projection device to the projected image. Larger projected images can be projected at both shorter and longer projection distances, which can improve the user experience.

[0071] In some embodiments, the distance from the vertex of the concave or convex reflector to the second projected image is A1, and the height dimension V of the second projected image at a distance of A1 has a ratio of 0.15 ≤ A1 / V ≤ 0.29; when the ratio of the width H to the height of the projected image is H:V = 16:9, the projection ratio is 0.05 ≤ A1 / H ≤ 0.15.

[0072] The structure of the projection lens device may include, but is not limited to, the following options:

[0073] In some embodiments, the projection lens device further includes a common module and a reflective component, wherein the image light is processed by the common module; when the reflective component is in a first state, the processed light enters the target telephoto lens module and exits after passing through the target telephoto lens module; when the reflective component is in a second state, the processed light enters the target short-focus lens module and exits after passing through the target short-focus lens module.

[0074] Optionally, the shared module includes at least one lens with diopter, and / or the shared module includes an aperture and a lens group disposed between the aperture and the imaging chip.

[0075] Option 1: The reflective assembly includes a target reflective element. In the first state, the target reflective element is not located in the optical path of the processed light, and the processed light directly enters the target telephoto lens module. In the second state, the target reflective element is located in the optical path of the processed light, and the processed light enters the target short-throw lens module after being reflected by the target reflective element. The projection device is equipped with a driving device corresponding to the target reflective element, which can drive the target reflective element into or out of the optical path.

[0076] Optionally, when the optical axis of the target telephoto lens module or the target short focal length lens module is on the same straight line as the optical axis of the common module, and the optical axis of the target short focal length lens module or the target telephoto lens module is parallel to the optical axis of the common module, the reflective assembly includes a target reflective element, and the target short focal length lens module or the target telephoto lens module also includes a reflective element to reflect the light reflected by the target reflective element again.

[0077] For example, such as Figure 2 The diagram shown is a structural schematic of a projection lens device provided in this embodiment. It should be noted that... Figure 2 The shared module shown in the dashed box in the middle and subsequent figures is actually only one; the two modules shown in the figures are only for better illustration of the optical path.

[0078] Option 2, and Figure 2 Compared to the scheme shown, the target reflective element in the reflective assembly includes a transmission area and a reflection area. In the first state, the transmission area of ​​the target reflective element is located in the optical path of the processed light, and the processed light enters the target telephoto lens module through the transmission area. In the second state, the reflector of the target reflective element is located in the optical path of the processed light, and the processed light enters the target short-throw lens module after being reflected by the reflection area. The reflective element can be a disk. The projection device is equipped with a driving device corresponding to the target reflective element, which can drive the reflection area or transmission area of ​​the target reflective element to be located in the optical path.

[0079] Option 3, and Figure 2 Compared to the scheme shown, in the first state, the target reflective element forms a first angle with the optical axis of the processed light, and the processed light is transmitted through the target reflective element and then enters the target telephoto lens module; in the second state, the target reflective element forms a second angle with the optical axis of the processed light, and the processed light is reflected by the target reflective element and then enters the target short-focus lens module; the first angle is greater than the second angle; wherein, the first angle and the second angle can be customized according to the actual coating characteristics, for example, the first angle can be 90 degrees and the second angle can be 45 degrees.

[0080] Option 4: The reflective assembly includes a first reflective element and a second reflective element. In a first state, the first reflective element is located in the optical path of the processed light, and the processed light is reflected by the first reflective element and then enters the target telephoto lens module. In a second state, the second reflective element is located in the optical path of the processed light, and the processed light is reflected by the second reflective element and then enters the target short-throw lens module. Optionally, the projection device is provided with a driving device corresponding to the first and second reflective elements, which can drive either the first or second reflective element to be located in the optical path.

[0081] Optionally, when the optical axis of the target telephoto lens module or the target short focal length lens module is perpendicular to the optical axis of the common module, and the optical axis of the target short focal length lens module or the target telephoto lens module is parallel to the optical axis of the common module, and when they form a U-shape with the common module, the reflective assembly includes a first reflective element and a second reflective element. The target short focal length lens module or the target telephoto lens module also includes a reflective element to reflect the light reflected by the first reflective element and the second reflective element again. For example, such as... Figure 3 The diagram shown is a structural schematic of a projection lens module provided in this embodiment.

[0082] Option 5, and Figure 3 Compared to the projection lens module shown, the optical axes of the target short-throw lens module and the target long-throw lens module are parallel to the optical axis of the common module, and they form a U-shape with the common module. The reflective assembly includes a first reflective element and a second reflective element. Both the target short-throw lens module and the target long-throw lens module include a reflective element to reflect the light reflected by the first reflective element and the second reflective element again. For example, as... Figure 4 or Figure 5 The diagram shown is a structural schematic of a projection lens module provided in this embodiment. Figure 4 and Figure 5 In this case, due to the different placement of the shared modules, the relative placement of the concave mirror in the target short focal length lens is also different.

[0083] The optical engine architecture is designed with a vertical orientation in the Y direction. Two independent switching modules are designed from the front end to the magnified projection end: lens module 1 and lens module 2. Lens module 1 is a long-throw projection module, designed parallel to the shared module. Internally, a reflective element (Module 1 1) redirects the light path a second time. When positional differences exist, a reflective mirror (Module 1 1) at the light-emitting position at the front of module 1 redirects the light path from the original Y direction to the X direction, ultimately projecting an image onto projection orientation 1. Lens module 2 is a short-throw projection module, designed U-shaped with the shared module. Internally, a reflective element (Module 2 2) redirects the light path a second time. Light emitted from the lens module at position L1 is reflected by the ultra-short-throw reflector bowl of lens module 2, projecting an image onto projection orientation 2, which is located directly above (e.g., on a car roof) at a shorter projection distance.

[0084] Lens module 1 and lens module 2 are precisely switched by mirror drive to change the optical path, so as to achieve projection imaging in azimuth 1 or / and azimuth 2.

[0085] Option 6, and Figure 2 Compared to the projection lens modules shown, when the optical axes of the target short-throw lens module and the target long-throw lens module are perpendicular to the optical axis of the common module, and the target short-throw lens module and the common module form a twisted Z-shape, and the target long-throw lens module and the common module form an L-shape; the reflection assembly includes a total internal reflection element and a target reflection element. The processed light is reflected by the total internal reflection element and then enters the target reflection element. The characteristics of the target reflection element can be referred to in Scheme 1-3; the target short-throw lens module or the target long-throw lens module includes a reflection element to reflect the light reflected by the target reflection element again.

[0086] For example, such as Figure 6 The diagram shown is a structural schematic of a projection lens module provided in this embodiment. The shared module has a horizontal layout in the Z direction, and the target telephoto lens module and the shared module are aligned in the XZ plane optical axis direction; the target short-focal-length lens module and the shared module have a double-fold design, and the light path is turned to the XY plane through a driving device, a total internal reflection element, and a target reflection element.

[0087] Lens module 1 and lens module 2 are precisely switched by mirror drive to change the optical path, so as to achieve projection imaging in azimuth 1 or / and azimuth 2.

[0088] Option 7, and Figure 3Compared to the projection lens modules shown, the optical axes of the target short-throw lens module and the target long-throw lens module are perpendicular to the optical axis of the common module, and the target short-throw lens module and the common module form a twisted Z-shape, while the target long-throw lens module and the common module form an L-shape; the reflection assembly includes a first reflection element and a second reflection element, and the target short-throw lens module or the target long-throw lens module includes a reflection element to reflect the light reflected by the first reflection element or the second reflection element again.

[0089] For example, such as Figure 7 The diagram shown is a structural schematic of a projection lens module provided in this embodiment. The shared module has a horizontal layout in the Z direction. The target telephoto lens module is aligned with the shared module in the XZ plane optical axis direction and projects the image at a first location, i.e., at a location with a longer projection distance (such as the front or rear of a vehicle). The target short-throw lens module and the shared module have a double-fold design. The optical path is deflected to the XY plane through a driving device and a reflective element. Finally, the short-throw lens module reflects the image through an ultra-short-throw reflector and projects the image at a second location, i.e., at a location with a shorter projection distance (such as the roof of a vehicle). The XYZ coordinate system is satisfied.

[0090] The target telephoto lens module and the target short focal length lens module are laid out on both sides of the XZ plane to split the light. The target telephoto lens module is bent towards the X+ direction, and the target short focal length lens module is bent towards the X- direction for the first time. Then, the light path is bent to the XY plane through a reflective element.

[0091] It should be noted that the above schemes are illustrated for easier explanation. The placement of the modules in each scheme can be rotated and arranged in three-dimensional positions such as up, down, left, and right, all achieving the same effect.

[0092] In some embodiments, the short focal length lens module includes, but is not limited to: a reflector bowl (concave mirror) with negative refractive power; a first lens with negative refractive power; a second lens with negative refractive power; a third lens with positive refractive power; a fourth lens with negative refractive power; and a fifth lens with positive refractive power.

[0093] In some embodiments, the telephoto lens module includes, but is not limited to: a sixth lens with negative refractive power; a seventh lens with positive refractive power; an eighth lens with positive refractive power; and a ninth lens with positive refractive power.

[0094] In some embodiments, the common module includes, but is not limited to: a tenth lens with negative refractive power; an eleventh lens with positive refractive power; a twelfth lens with negative refractive power; a thirteenth lens with positive refractive power; a fourteenth lens with positive refractive power; and a fifteenth lens with positive refractive power.

[0095] In some embodiments, the focal length of the short - focus lens module: 0.5 mm ≤ EFL_ust ≤ 1.7 mm; the focal length of the long - focus lens module: 5 mm ≤ EFL_tele ≤ 20 mm; the field - of - view angle of the short - focus lens module: 140° < fov_ust < 200°; the field - of - view angle of the long - focus lens module:

[0096] 10° < fov_tele < 70°; the projection ratio of the short - focus lens module: 0.1 < TR_ust < 0.3; the projection ratio of the long - focus lens module: 0.7 < TR_tele < 2.2;

[0097] EFF_ust is the effective focal length of the short - focus lens module, EFF_tele is the effective focal length of the long - focus lens module, Fov_ust is the full field - of - view angle of the short - focus lens module, Fov_tele is the full field - of - view angle of the long - focus lens module; TR_ust is the projection ratio of the short - focus lens module, TR_tele is the projection ratio of the long - focus lens module.

[0098] For example, Tables 1 and 2 below show the parameters of each element and other elements in the projection lens module:

[0099] Table 1

[0100]

[0101] Table 2

[0102]

[0103] In Tables 1 and 2, the surfaces of the reflector bowls, the first lens L1, the fourth lens L4, the sixth lens L6, and the fourteenth lens L14 are aspherical lenses, and the remaining lenses are spherical lenses;

[0104] In some embodiments, the aspherical polynomial formula is:

[0105]

[0106] where the parameter c is the curvature corresponding to the radius, r is the radial height of the lens, k is the conic constant, and α1 to α8 are the aspherical coefficients corresponding to the second to sixteenth orders respectively.

[0107] When the k coefficient is less than - 1, the surface curve of the lens is a hyperbola; when the k coefficient is equal to - 1, the surface curve of the lens is a parabola; when the k coefficient is between - 1 and 0, the surface curve of the lens is an ellipse; when the k coefficient is equal to 0, the surface curve of the lens is a circle; when the k coefficient is greater than 0, the surface curve of the lens is an oblate circle.

[0108] The parameters in the formula can refer to Table 3

[0109] Table 3

[0110] k <![CDATA[α2]]> <![CDATA[α3]]> <![CDATA[α4]]> <![CDATA[α5]]> <![CDATA[α6]]> <![CDATA[α7]]> <![CDATA[α8]]> <![CDATA[α9]]> <![CDATA[α 10 ]]> S1 -1.5 -1.9E-07 2.0E-10 -5.2E-14 8.8E-18 -9.1E-22 5.3E-26 -1.2E-30 -1.8E-37 6.7E-41 S2 0.0 -4.5E-05 6.1E-08 2.6E-09 -2.5E-11 1.2E-13 -3.5E-16 5.7E-19 -4.9E-22 1.7E-25 S3 0.0 -6.2E-05 -7.8E-07 1.6E-08 -2.0E-10 1.5E-12 -7.4E-15 2.1E-17 -3.4E-20 2.3E-23 S8 0.0 2.1E-04 -3.9E-06 8.2E-08[ -1.5E-09 1.8E-11 -1.3E-13 6.3E-16 -1.7E-18 2.0E-21 S9 -0.1 2.2E-04 -5.4E-06 1.7E-07 -4.1E-09 5.8E-11 -5.1E-13 2.7E-15 -7.7E-18 9.5E-21 S12 0.0 -4.7E-04 -1.3E-06 1.2E-07 -2.7E-09 3.7E-11 -3.5E-13 2.1E-15 -7.6E-18 1.2E-20 S13 -1.0 -9.5E-04 3.6E-06 3.1E-07 -1.2E-08 2.4E-10 -3.2E-12 2.6E-14 -1.2E-16 2.4E-19 S29 99.0 -1.1E-04 2.2E-06 -1.2E-07 3.7E-09 -5.2E-11 6.1E-15 1.0E-14 -1.3E-16 5.6E-19 S30 0.3 -4.9E-05 1.5E-06 -6.5E-08 1.5E-09 -1.7E-11 6.5E-14 5.2E-16 -4.2E-18 0.0E+00

[0111] Optionally, in any of the schemes 1-7, when there is a difference in the projection position of the projected image corresponding to the target telephoto lens module, the imaging circle of the target telephoto lens module can be increased by design to meet the original display chip size. This can be achieved by using the tilt-shift principle to shift the position of the projected image vertically, horizontally, and vertically in the corresponding orientation. For example... Figure 8 and 9 The diagram shown is a schematic representation of the tilt-shift principle provided in this embodiment. The abbreviations in the diagram are as follows: EFL, Effective Focal Length; TR, Throw Ratio; Fov, Field of View; OBJ, Object Plane; IMG, Image Plane.

[0112] Option 8: The projection lens device further includes a shared module and a reflective assembly, the reflective assembly including a specific reflective element. Image light is processed by the shared module, and the processed light is partially transmitted or reflected by the specific reflective element to the target telephoto lens module, then exits through the target telephoto lens module, and partially reflected or transmitted to the target short-focus lens module, then exits through the target short-focus lens module. In other words, the image light emitted from the display chip is processed by the shared module of the projection lens device and then split in two by the specific reflective element, exiting from the target short-focus lens module and the target telephoto lens module respectively, forming two projected images. Optionally, the specific reflective element can also be a prism, where two sides of the prism can reflect the processed light in different directions, thus allowing part of the processed light to enter the target short-focus lens module and part to enter the target telephoto lens module.

[0113] Option 9: The projection lens device further includes a specific reflective element. Image light entering the projection lens device is partially transmitted to the target telephoto lens module and exits after passing through the target telephoto lens module, while the remaining portion is reflected to the target short-focus lens module and exits after passing through the target short-focus lens module. In other words, the image light emitted from the display chip is split in two by the specific reflective element, exiting from the target short-focus lens module and the target telephoto lens module respectively, forming two projected images. Optionally, the specific reflective element can also be a prism, where two sides can reflect the image light in different directions, thus allowing part of the image light to enter the target short-focus lens module and part to enter the target telephoto lens module.

[0114] Option 10: The projection lens device includes a common module and apertures corresponding one-to-one with at least one telephoto lens module and at least one short-focus lens module; image light is reduced and deflected after passing through the common module, thereby passing through the apertures corresponding to the target telephoto lens module or the target short-focus lens module, entering the target telephoto lens module or the target short-focus lens module, and exiting after passing through the target telephoto lens module or the target short-focus lens module. For example, such as... Figure 10 The diagram shown is a structural schematic of a projection lens module provided in this embodiment. Multiple lens modules (such as the target telephoto lens module Lens1 and the target short-focal-length lens module Lens2 in the diagram) are positioned in front of the aperture stop. The aperture diameter of each lens module is much smaller than that at the rear. Through the principle of aperture reduction and offset, the light path passes through the aperture stop and then through multiple small aperture stops (such as STOP1 and STOP2 in the diagram) to present a multi-lens beam-splitting projection.

[0115] In some embodiments, the projection lens device includes a movable slider device and a lens mounting bracket, wherein at least one telephoto lens module and at least one short-focus lens module are fixed on the lens mounting bracket and connected to the movable slider device.

[0116] When the movable slider device slides the target telephoto lens module into the optical path of the image light, the image light enters the target telephoto lens module and exits through it. Similarly, when the movable slider device slides the target short-focal-length lens module into the optical path of the image light, the image light enters the target short-focal-length lens module and exits through it. Optionally, the movable slider device has a corresponding drive motor that drives it to slide, thereby allowing either the target short-focal-length lens module or the target telephoto lens module to slide into the optical path of the image light. Optionally, when the drive motor drives the movable slider device to slide, it can move directly from preset position 1 to preset position 2, or it can move continuously from preset position 1 to preset position 2. Optionally, the lens modules can be arranged in a horizontal array, vertically, or both horizontally and vertically simultaneously.

[0117] Option 11, for example, such as Figure 11-13 The diagram shown is a structural schematic of a projection lens module provided in this embodiment; wherein:

[0118] Figure 11 A schematic diagram of a telephoto lens module and a short-focus lens module is shown. It should be noted that lens 1 and lens 2 in the accompanying drawings corresponding to this embodiment can be either a short-focus lens module or a telephoto lens module.

[0119] The lens mounting bracket places the lens module horizontally, and the lens module can be moved vertically along the lens mounting bracket to move the projected image (tilt-shift function).

[0120] The movable slider device can slide freely in the horizontal direction. The lens fixing bracket is placed on the movable slider device, and the drive motor moves the movable slider device. The slider device realizes the horizontal position switching of lens 1 and lens 2. The movable slider device drives lens 1 to the preset position 1. The image light of the display chip is incident on lens 1, refracted by the lens inside lens 1, and finally projected into the first position (projection position 1) to obtain the first projected image. The movable slider device drives lens 2 to the preset position 2. The image light of the display chip is incident on lens 2, refracted by the lens inside lens 2, and finally projected into the second position (projection position 2) to obtain the second projected image.

[0121] Figure 12 A schematic diagram of multiple lens modules is shown. Figure 11 In contrast, there can be two or more lens modules, each projecting images to different projection directions.

[0122] Figure 13 A schematic diagram of multiple lens modules is shown. Figure 11 In contrast, it has multiple display chips and multiple lens modules; the lens modules are arranged horizontally and vertically at the same time.

[0123] In some embodiments, the projection lens device further includes a gimbal corresponding to the target telephoto lens module and / or the target short-focal-length lens module, for adjusting the projection position of the corresponding projection image in the projection space.

[0124] Option 12, for example, such as Figure 14 The diagram shown is a structural schematic of a projection lens module provided in this embodiment. A gimbal is provided on the lens 1 (which can be a telephoto lens module or a short-focus lens module), so that the projection orientation can be rotated, and the projection position of the projected image in the projection space can be changed.

[0125] In summary, the projection lens device provided in this embodiment can project wide-format images from different directions and at different projection distances, namely, ultra-short-distance large-screen projection and long-distance large-screen projection, and can achieve independent and high-efficiency projection display, thereby improving the user experience.

[0126] Figure 15 This is a schematic diagram of the functional modules of a projection device provided in this application. Figure 15 As shown, the projection device includes an image processor 101 and a projection optical engine 102. The projection optical engine 102 includes a light source device, a display chip, and a projection lens device as described in any of the above embodiments; wherein:

[0127] A light source device used to generate light from a light source;

[0128] A display chip is used to modulate light from a light source to obtain image light.

[0129] In some embodiments, the display chip is provided with a movable device, wherein: the movable device moves the display chip to a first position, so that image light enters the projection lens device and exits through the target telephoto lens module; the movable device moves the display chip to a second position, so that image light enters the projection lens device and exits through the target short-throw lens module. By moving the display chip, the projection device can be positioned at different locations and at different projection distances to project a wide-format image.

[0130] In some embodiments, when the projection device receives a control command from the user to form a first projected image, the projection device controls the image light incident into the projection lens device to be emitted through the target telephoto lens module.

[0131] When the projection device receives a control command from the user to form a second projected image, the projection device controls the image light entering the projection lens device to be emitted through the target short-throw lens module; wherein, the user gives instructions through voice, gesture, or controller.

[0132] The display chip can be a digital micromirror device (DMD), a liquid crystal display (LCD), or a liquid crystal on silicon (LCOS), etc.; the driving chip corresponds to the display chip, for example, the digital micromirror device can be driven by a digital light processing (DLP) element. The projection optical engine 102 may also include a driving chip, etc.

[0133] In some embodiments, the image processor 101 may be a microcontroller, a dedicated image processing chip, etc. The microcontroller may be an ARM chip, a microcontroller unit (MCU), etc.; the dedicated image processing chip may be an image signal processor (ISP), a graphics processing unit (GPU), an embedded neural network processing unit (NPU), etc. The image processor 101 can be used for video decoding, image quality processing, etc.

[0134] In some embodiments, the projection device further includes a central controller 103 with one or more processing cores, which may be a CPU, ARM, MCU, or other controller. The central controller 103 is the control center of the projection device, connecting various parts of the entire projection device via various interfaces and lines. It can run or execute software programs and / or operating systems stored in the memory 104, and access data stored in the memory 104. Optionally, the image processor 101 and the central controller 103 may be integrated into a single processor.

[0135] In some embodiments, the projection device further includes a memory 104, an input module 105, a communication module 106, a power supply 107, and other components of one or more computer-readable storage media. Those skilled in the art will understand that... Figure X The projection device structure shown in XX does not constitute a limitation on the projection device. It may include more or fewer components than shown, or combine certain components, or have different component arrangements. Wherein:

[0136] The memory 104 can be used to store software programs and operating systems. The central controller 103 executes various functional applications and data processing by running the software programs and operating systems stored in the memory 104. The memory 104 may mainly include a program storage area and a data storage area. The program storage area may store the operating system, application programs required for at least one function (such as sound playback function, image playback function, etc.), etc.; the data storage area may store data created according to the use of the projection device, etc. In addition, the memory 104 may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid-state storage device. Accordingly, the memory 104 may also include a memory controller to provide the central controller 103 with access to the memory 104.

[0137] The projection device may also include an input module 105, which can be used to receive input digital or character information, and generate remote control, keyboard, mouse, joystick, optical or trackball signal inputs related to user settings and function control.

[0138] The projection device may also include a communication module 106. In some embodiments, the communication module 106 may include a wireless module, through which the projection device can perform short-range wireless transmission, thereby providing users with wireless broadband internet access. For example, the communication module 106 can be used to help users access streaming media.

[0139] The projection device also includes a power supply 107 that supplies power to the various components. In some embodiments, the power supply 107 can be logically connected to the central controller 103 through a power management system, thereby enabling functions such as charging, discharging, and power consumption management through the power management system. The power supply 107 may also include one or more DC or AC power supplies, recharging systems, power fault detection circuits, power converters or inverters, power status indicators, and other arbitrary components.

[0140] The projection device provided in this embodiment can project wide-format images from different directions and at different projection distances, thereby improving the user experience.

[0141] This embodiment also provides a vehicle interaction system, including the above-mentioned projection device, and further including:

[0142] The triggering unit is used to detect information in the projection space to generate control commands, or to detect user operations to generate and send control commands; the triggering unit includes one or more of the following: image sensor, laser detection sensor, infrared detection sensor, position sensor, angle sensor, wireless sensing device, brightness sensor, voice acquisition device, and remote control;

[0143] A projection device is used to receive control commands and project to form a first projected image and / or a second projected image, wherein the second projected image is located on the roof of the vehicle.

[0144] For example, a user can use buttons on the remote control to select whether to project the image onto the roof, front, or rear of the vehicle; the remote control detects the user's button presses and generates and sends control commands. Similarly, a user can perform preset gestures or emit preset voice commands within the projection space; trigger units (sensors) on the vehicle or projection device can detect these gestures or voice commands and generate and send control commands. Furthermore, the vehicle's infotainment system display interface can show controls for switching the projection image's orientation; the user can operate these controls to select whether to project the image onto the roof, front, or rear of the vehicle; the infotainment system responds to the user's control input, generating and sending control commands.

[0145] The vehicle interaction system provided in this embodiment can project wide-format images from all directions, such as the roof, front, or rear of the vehicle, thereby enhancing the user experience.

[0146] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more associated listed items. The character “ / ” in this document generally indicates that the preceding and following objects are in an “or” relationship.

[0147] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A projection lens device, characterized in that, The projection lens device includes at least one telephoto lens module and at least one short-focus lens module, and the light-emitting part of the target short-focus lens module is provided with a concave reflector or a convex reflector. The target short-focal-length lens module is any one of the at least one short-focal-length lens modules, and the target telephoto lens module is any one of the at least one telephoto lens modules; wherein: Image light incident on the projection lens device forms a first projected image if it exits through the target telephoto lens module, and forms a second projected image if it exits through the target short-focal-length lens module. The first projected image and the second projected image are located in different positions in the projection space.

2. The projection lens device according to claim 1, characterized in that, The projection lens device further includes a common module and a reflective component. The image light is processed by the common module. When the reflective component is in the first state, the processed light enters the target telephoto lens module and exits after passing through the target telephoto lens module. When the reflective component is in the second state, the processed light enters the target short-focal-length lens module and exits after passing through the target short-focal-length lens module; or, the reflective component includes a specific reflective element, and the processed light is partially transmitted or reflected by the specific reflective element to the target long-focal-length lens module, exits after passing through the target long-focal-length lens module, and is partially reflected or transmitted to the target short-focal-length lens module, exits after passing through the target short-focal-length lens module. Alternatively, the projection lens device may further include a specific reflective element, through which image light incident on the projection lens device is partially transmitted or reflected to the target telephoto lens module, exits after passing through the target telephoto lens module, and is partially reflected or transmitted to the target short-focus lens module, exits after passing through the target short-focus lens module.

3. The projection lens device according to claim 2, characterized in that, The reflection assembly includes a target reflection element. The first state is that the target reflection element is not located in the optical path of the processed light, and the processed light directly enters the target telephoto lens module. The second state is that the target reflective element is located in the optical path of the processed light, and the processed light is reflected by the target reflective element and then enters the target short focal length lens module; Alternatively, the reflective assembly includes a target reflective element, which includes a transmission area and a reflection area. In the first state, the transmission area of ​​the target reflective element is located in the optical path of the processed light, and the processed light enters the target telephoto lens module through the transmission area. The second state is that the reflector of the target reflective element is located in the optical path of the processed light, and the processed light is reflected by the reflective area and then enters the target short focal length lens module; Alternatively, the reflection assembly includes a target reflection element, wherein the first state is that the target reflection element forms a first angle with respect to the optical axis of the processed light, and the processed light is transmitted through the target reflection element and then enters the target telephoto lens module; The second state is that the target reflective element forms a second angle with respect to the optical axis of the processed light, and the processed light is reflected by the target reflective element and then enters the target short-focal-length lens module; the first angle is greater than the second angle; Alternatively, the reflective assembly includes a first reflective element and a second reflective element, wherein the first reflective element is located in the optical path of the processed light, and the processed light is reflected by the first reflective element and then enters the target telephoto lens module. The second state is that the second reflective element is located in the optical path of the processed light, and the processed light enters the target short focal length lens module through the second reflective element.

4. The projection lens device according to claim 3, characterized in that, When the optical axis of the target telephoto lens module or the target short-focus lens module is on the same straight line as the optical axis of the common module, and the optical axis of the target short-focus lens module or the target telephoto lens module is parallel to the optical axis of the common module, the reflection assembly includes a target reflection element. The target short-focus lens module or the target telephoto lens module also includes a reflection element to reflect the light reflected by the target reflection element again. Alternatively, when the optical axis of the target telephoto lens module or the target short-focus lens module is perpendicular to the optical axis of the common module, and the optical axis of the target short-focus lens module or the target telephoto lens module is parallel to the optical axis of the common module, and forms a U-shape with the common module, the reflective assembly includes a first reflective element and a second reflective element, and the target short-focus lens module or the target telephoto lens module further includes a reflective element to reflect the light reflected by the first reflective element and the second reflective element again; Alternatively, the optical axes of the target short-focus lens module and the target long-focus lens module are parallel to the optical axis of the common module and form a U-shape with the common module. The reflection component includes a first reflection element and a second reflection element. The target short-focus lens module and / or the target long-focus lens module further includes a reflection element to reflect the light reflected by the first reflection element and / or the second reflection element again. Alternatively, when the optical axes of the target short-focus lens module and the target long-focus lens module are perpendicular to the optical axis of the common module, and the target short-focus lens module and the common module form a twisted Z-shape, and the target long-focus lens module and the common module form an L-shape; the reflection assembly includes a total internal reflection element and a target reflection element, and the processed light is reflected by the total internal reflection element and then enters the target reflection element; the target short-focus lens module or the target long-focus lens module includes a reflection element to reflect the light reflected by the target reflection element again; Alternatively, when the optical axes of the target short-focus lens module and the target long-focus lens module are perpendicular to the optical axis of the common module, and the target short-focus lens module and the common module form a twisted Z-shape, and the target long-focus lens module and the common module form an L-shape; the reflective assembly includes a first reflective element and a second reflective element, and the target short-focus lens module or the target long-focus lens module includes a reflective element to reflect the light reflected by the first reflective element or the second reflective element again.

5. The projection lens device according to claim 1, characterized in that, The projection lens device includes a common module and apertures corresponding one-to-one with the at least one telephoto lens module and the at least one short-focus lens module; The image light is reduced and deflected after passing through the shared module, and then enters the target telephoto lens module or the target short focal length lens module through the aperture corresponding to the target telephoto lens module or the target short focal length lens module, and exits after passing through the target telephoto lens module or the target short focal length lens module.

6. The projection lens device according to claim 2 or 5, characterized in that, The shared module includes at least one lens with diopter, and / or the shared module includes an aperture and a lens group disposed between the aperture and the imaging chip.

7. The projection lens device according to claim 1, characterized in that, The projection lens device includes a movable slider device and a lens fixing bracket. The at least one telephoto lens module and the at least one short-focus lens module are fixed on the lens fixing bracket and connected to the movable slider device. When the movable slider device slides the target telephoto lens module into the optical path of the image light, the image light enters the target telephoto lens module and exits through the target telephoto lens module; when the movable slider device slides the target short focal length lens module into the optical path of the image light, the image light enters the target short focal length lens module and exits through the target short focal length lens module.

8. The projection lens device according to claim 7, characterized in that, The projection lens device also includes a gimbal corresponding to the target telephoto lens module and / or the target short-focal-length lens module, used to adjust the projection position of the corresponding projection image in the projection space.

9. The projection lens device according to claim 1, characterized in that, The field of view of the target short-focal-length lens module is in the range of 140 degrees to 200 degrees, and the field of view of the target telephoto lens is in the range of 10 degrees to 70 degrees. And / or, the ratio of the focal length of the target telephoto lens to the focal length of the target short-focal-length lens is in the range of 4 to 15; And / or, the projection ratio of the target short-focal-length lens module is greater than 0.05 and less than 0.3, and the projection ratio of the target long-focal-length lens module is greater than 0.7 and less than 2.

2.

10. The projection lens device according to claim 1, characterized in that, When the ratio of the projection distance between the first projected image and the second projected image is in the range of 4 to 10, the ratio of the width dimension of the first projected image to the width dimension of the second projected image is in the range of 0.8 to 5.

11. The projection lens device according to claim 1, characterized in that, The projection space is the car space. The first projected image is located in a first position in the projection space, and the second projected image is located in a second position in the projection space. The first position and the second position point to the front or rear or side window or bottom or roof or seat back of the car or the ground where the car is located.

12. A projection device, characterized in that, The projection device includes a light source device, a display chip, and a projection lens device as described in any one of claims 1-11; The light source device is used to generate light from the light source; The imaging chip is used to modulate the light source to obtain image light.

13. The projection device according to claim 12, characterized in that, The imaging chip is provided with a movable device, wherein: The movable device moves the display chip to a first position, so that the image light enters the projection lens device and exits through the target telephoto lens module; the movable device moves the display chip to a second position, so that the image light enters the projection lens device and exits through the target short-focal-length lens module.

14. The projection device according to claim 12, characterized in that, When the projection device receives a control command from the user to form the first projected image, the projection device controls the image light entering the projection lens device to exit through the target telephoto lens module; When the projection device receives a control command from the user to form the second projected image, the projection device controls the image light entering the projection lens device to be emitted through the target short-throw lens module; wherein, the user gives instructions through voice, gesture, or remote control.

15. A vehicle interaction system, characterized in that, The projection device according to any one of claims 12-14 further includes: The triggering unit is used to detect information in the projection space to generate control commands, or to detect user operations to generate and send control commands; the triggering unit includes one or more of the following: image sensor, laser detection sensor, infrared detection sensor, position sensor, angle sensor, wireless sensing device, brightness sensor, voice acquisition device, and remote control; A projection device is used to receive control commands and project to form a first projected image and / or a second projected image, wherein the second projected image is located on the roof of the vehicle.

Images