TWM554175U - Optical projection apparatus - Google Patents

Description

Optical projection device

The present invention provides an optical projection device, in particular, a head-up display technology which has a simple structure, a small volume, a virtual imaging at a long distance, and a small aberration, and is combined with a detachable outer casing, so that the head-up display has a aftermarket. Convenient optical projection device.

Press, Head Up Display (HUD) allows the user to view the virtual image information projected by the head-up display at the same viewing angle while viewing the front scene without having to look down at the dashboard. This convenience and the resulting Safety, that is, the car head-up display has gradually become a key to the modern trend.

Please refer to the first figure, which is a schematic diagram of the implementation of the conventional head-up display. The head-up display comprises a box body 91. The box body 91 has a developing device 92 for emitting image information, and passes through at least two optical mirrors 93 and 94 to direct image information to the windshield of the driver in front of the driver. 95. The virtual image of the image information can be reflected and presented, and is seen by the driver's eyes. Wherein, the box body 91 of the head-up display has to project a two-dimensional image with a certain angle of view (FOV), and it is necessary to have a certain volume, so that the two-dimensional image can be shot by the two optical mirrors 93 and 94. To the windshield 95, the box body 91 is to be set in a limited space in front of the driver's seat. If you do not want to sacrifice the car's foreground, you need to combine it in the space inside the instrument panel before leaving the factory, and because the light path is Vertically, the box body 91 is relatively bulky, making it difficult to assemble.

However, in order to reduce the size of the head-up display or to thin the whole, there are three optical design problems: virtual image magnification, viewing angle and aberration. When using a micro projector or liquid crystal display (LCD) as a display device, in order to realize a remote virtual image head-up display, it is also necessary to cooperate with the back end of the virtual image magnifying optical system (Relay Optics), but the design of the virtual image amplifying system is not easy to use. The streamlined optical architecture effectively eliminates the Aberration of large viewing angles, while the small viewing angle range results in less display information, limiting the application of the heads-up display; in addition, because the windshield is an irregular surface, it can cause reflections to the eye. , the deformation and aberration of the image, and it is very difficult to eliminate the distortion and aberration of the image. The mirror must be large. Aspherical surface, or other lenses need to be added to solve the aberration problem, which will increase the manufacturing cost of components and increase the difficulty of production assembly. As a result, the current popularity of installing head-up displays on automobiles has not been improved.

Therefore, how to solve the above problems and lack of use, and to achieve the magnified virtual image and solve the image distortion and aberration caused by the windshield, in order to improve the overall impact quality, that is, the new creator and engaged in this industry The relevant manufacturers are eager to study the direction of improvement.

Therefore, in view of the above-mentioned shortcomings, the new type of the present invention collects relevant information, evaluates and considers it through multiple parties, and through years of experience in the industry, through continuous trial and modification, it is designed to be simple in structure and volume. Small, long-distance virtual imaging, low-profile head-up display technology, combined with a detachable outer casing, enables the head-up display to have a new patent for optical projectors that are convenient for the market.

The main purpose of the novel is to use a combination of a mirror, a reflective curved mirror and an optical lens to achieve long-distance virtual imaging with a triangular imaging technique, and effectively reduce the necessary volume of the lens.

Another main object of the present invention is to incorporate optical projection technology into the outer casing to give it a rear-loading convenience that can be easily and quickly integrated outside the instrument panel.

In order to achieve the above object, the main structure of the present invention includes: an outer casing body having at least one joint portion defined on one side thereof, wherein the outer casing is detachably disposed on an outer side of the instrument panel, and is disposed on the outer casing An imaging unit for projecting at least one predetermined image, and a mirror disposed on a side of the imaging unit is disposed in the housing for receiving and reflecting the predetermined image, and a reflection path of the mirror is disposed in the housing The reflective curved mirror is used to adjust the imaging path and reduce the virtual image aberration, and project the predetermined image onto the windshield, thereby reflecting to the user's eyes, and imaging the virtual image of the predetermined image on the outside of the windshield. And providing, on the outer casing, at least one optical lens on the imaging path for amplifying the predetermined image; when the user uses the novel as a head-up display, the predetermined image is projected by the imaging unit. After being reflected by the mirror, it is hit on the reflective curved mirror to adjust the imaging path and correct the aberration, and the optical lens is used to enlarge the predetermined image in the path. The predetermined image is reflected to the user's eyes through a windshield, and is refracted outside the windshield to form a virtual image of the predetermined image, thereby realizing the principle of triangular imaging with a simple structure and expanding in a small space. The imaging range, the problem of aberration reduction, and the simple arrangement of the outer casing through the outer casing make the new type of convenience and development of the aftermarket.

With the above technology, the above-mentioned advantages can be achieved by solving the problems of the conventional head-up display, such as large volume, small imaging angle range, easy image aberration, complicated structural design, and insufficient convenience of vehicle assembly. Practical and progressive.

1, 1b‧‧‧ imaging unit

11‧‧‧Wireless Link Module

12‧‧‧Prescribed images

2, 2b‧‧‧ mirror

3, 3b‧‧‧reflective curved mirror

4‧‧‧ optical lens

41‧‧‧Protective layer

5, 5a, 5b‧‧‧ outer casing

51‧‧‧Combination Department

6a, 6b‧‧‧ Angle adjustment device

61b‧‧‧Drive components

62b‧‧‧Memory unit

63b‧‧‧Operating module

7‧‧‧windshield

Α‧‧‧first angle

Β‧‧‧second angle

Γ‧‧‧third angle

The first figure is a schematic diagram of the implementation of the conventional head-up display

The second drawing is a perspective view of a preferred embodiment of the present invention.

The third figure is a mirror positional relationship diagram of the preferred embodiment of the present invention.

The fourth figure is a schematic view of the assembly of the preferred embodiment of the present invention.

Figure 5 is a schematic illustration of the imaging path of the preferred embodiment of the present invention.

Figure 6 is a schematic view of the implementation of the preferred embodiment of the present invention.

Figure 7 is a schematic view showing the structure of a further preferred embodiment of the present invention.

Figure 8 is a schematic view showing the structure of another preferred embodiment of the present invention.

In order to achieve the above objects and effects, the technical means and structure adopted by the present invention are described in detail in the preferred embodiment of the present invention, and the features and functions thereof are as follows.

Please refer to the second and third figures, which are perspective views and mirror positional relationship diagrams of the preferred embodiment of the present invention. It can be clearly seen from the figure that the present invention mainly includes: an imaging unit 1 for Projecting at least one predetermined image 12; a mirror 2 disposed on one side of the imaging unit 1 for receiving and reflecting the predetermined image 12; one disposed on the side of the imaging unit 1 and located on the reflective path of the mirror 2 The reflective curved mirror 3 is configured to adjust the imaging path to reduce the virtual image aberration, and project the predetermined image 12 onto the windshield 7 to be reflected to the user's eyes, so that the virtual image of the predetermined image 12 is outside the windshield 7 Imaging, and the reflective curved mirror 3 includes a plurality of curvatures, and the curvatures are defined by a mathematical equation; and at least one optical lens 4 disposed on the imaging path for amplifying the predetermined image 12, The optical lens 4 is a Fresnel lens and has a protective layer 41 on the optical lens 4.

A first angle α is defined between the imaging unit 1 and the mirror 2, and a second angle β is defined between the mirror 2 and the reflective curved mirror 3, and a defined angle between the imaging unit 1 and the reflective curved mirror 3 is defined. a third angle γ, and the first angle α is 15 degrees to 70 degrees, and the second angle β is 30 degrees to 90 degrees, and the third angle γ is 75 degrees to 140 degrees, and the optimum value of the first angle α is 30 degrees to 40 degrees, and the optimal value of the second angle β is 50 degrees to 60 degrees. Degree, and the optimum value of the third angle γ is 95 degrees to 105 degrees.

With the above description, the structure of the present technology can be understood, and according to the corresponding cooperation of the structure, the structure can be simple, the volume is small, the long-distance virtual imaging, the small-diameter head-up display technology can be combined with the disassembly. In the outer casing, the head-up display has the advantages of convenience in the aftermarket, and the detailed explanation will be described below.

Please refer to the second to seventh figures at the same time, which is a perspective view to a schematic view of a preferred embodiment of the present invention. When the above components are assembled, it can be clearly seen from the figure that the present invention will be as described above. The optical projection technology is disposed in an outer casing 5, wherein the outer casing 5 defines at least one joint portion 51 for detachably disposed outside the instrument panel, and the optical projection technology is mainly formed by imaging. The unit 1, the mirror 2 (planar mirror or convex mirror), the reflective curved mirror 2, the optical lens 4 (preferably a Fresnel lens, or a convex lens or an optically transparent thin material) and the like cooperate with the windshield 7 to generate a far Distance virtual image. The imaging unit 1 is disposed on the outer casing 5. The mirror 2 and the reflective curved mirror 3 are disposed in the outer casing 5. The optical component is disposed in the visible range of the top surface of the outer casing 5.

Specifically, the imaging unit 1, the mirror 2 and the reflective curved mirror 3 are located on the same horizontal plane, so the imaging unit 1 preferably projects the predetermined image 12 laterally to the mirror 2 in parallel light, and utilizes The free-curvature reflective curved mirror 2 changes the path of the reflected light to be emitted upward (when the imaging path obtains the upward vertical component from the reflective curved mirror 3), while at the same time achieving the purpose of correcting the aberration, and since the optical lens 4 has one The protective layer 41 can be directly disposed in the hollow of the outer casing 1 to have the function of protecting dust and dust, and at the same time avoiding the additional arrangement of the light-transmitting components (such as plastic, glass, acrylic, etc.) to affect the imaging effect. The reflective curved mirror 2 has a plurality of curvatures, and can perform comprehensive aberration correction according to the divergence distance and angle of the mirror 2. Therefore, the curvature of the reflective curved mirror 2 is a non-fixed curvature, and is integrated through precise calculation. A mathematical equation is obtained by which the reflective curved mirror 2 having a special curvature design is produced, and the mathematical equation is as follows:

A_i為自然數，i=1,2,3,...，z為鏡面深度(seg)，r為鏡面上任一點治光軸之垂直高度，

，c為鏡面中心曲率，k為二次曲面常數值。 among them

A _i is a natural number, i=1, 2, 3, ..., z is the mirror depth (seg), and r is the vertical height of the optical axis at any point on the mirror surface.

, c is the curvature of the center of the mirror, and k is the constant value of the quadric.

The predetermined image 12 can be initially enlarged at the reflective curved mirror 3, and further reflected by the reflective curved mirror 2, and then projected by the optical lens 4 to project the predetermined image 12 to the windshield 7 so that the predetermined image 12 is projected. The predetermined image 12 is reflected by the windshield 7 to the user's eyes, and is refracted outside the windshield 7 to form a virtual image of the predetermined image 12 (about two meters in front of the user). In this way, by the above structure, the configuration of the first angle α, the second angle β, and the third angle γ can be used to achieve long-distance virtual imaging by the triangular imaging technique, and the optical lens 4 is a Fresnel. The lens can effectively reduce the necessary volume of the lens while overcoming the problem of aberration.

Therefore, since the optical projection technology can reduce the necessary volume of the lens (including the size of the lens itself and the spatial position between the lenses), it can be surely coupled to the outer casing 5 to match the joint portion 51 of the outer casing 5, that is, It can be easily placed on the outside of the dashboard by the user without the need of a professional hand. Of course, it is not necessary to pre-embed the front of the driver's seat before leaving the factory, and it has the convenience of the aftermarket. The joint portion 51 can be a non-slip structure, an adhesive structure, or a card fixing structure (an air outlet extending to the front edge of the instrument panel or the side of the windshield 7).

Please also refer to the seventh embodiment, which is a schematic structural view of another preferred embodiment of the present invention. It can be clearly seen from the figure that the embodiment is similar to the above embodiment, only on the outer casing 5a. At least one angle adjusting device 6a is provided for changing the angle at which the imaging path projects the outer casing 5a. The angle adjusting device 6a is a universal adjusting member and can be disposed outside the outer casing 5a for the user to directly adjust the outer casing 5a to appropriately adjust the final imaging effect.

Please also refer to the eighth embodiment, which is a schematic structural view of another preferred embodiment of the present invention. It can be clearly seen from the figure that the embodiment is similar to the above embodiment, and only the angle adjusting device is used. 6b further includes at least one driving component 61b, a memory unit 62b for recording angle parameters, and an operation module 63b disposed on the outer casing 5b and electrically connecting the driving component 61b and the memory unit 62b. The angle parameter is used to set the drive element 61b. Thereby, the user can set different imaging angles by using the angle adjusting device 6b according to the angle of different models or different windshields. In actual operation, the angle parameter combination pre-stored in the memory unit 62b is selected by the operation module 63b on the outer casing 5b. After the selection, the angle of the imaging unit 1b, the mirror 2b and the reflective curved mirror 3b can be automatically controlled by the driving element 61b. Positional relationship, in order to comply with all types of cars.

However, the above description is only a preferred embodiment of the present invention, and thus does not limit the scope of the novel patent, so that the simple modification and equivalent structural changes of the present specification and the drawings are used. All of them should be included in the scope of this new patent and will be combined with Chen Ming.

In summary, the optical projection device of the present invention can achieve its efficacy and purpose when used, so the novel is a new type of practicality, which is in line with the application requirements of the new patent, and is submitted according to law. The trial committee will grant this new type as soon as possible to protect the new type of people's hard work. If there is any doubt in the bureau's review committee, please do not hesitate to give instructions, the new type of person will try their best to cooperate, and feel really good.

1‧‧‧ imaging unit

11‧‧‧Wireless Link Module

2‧‧‧Mirror

3‧‧‧Reflective curved mirror

4‧‧‧ optical lens

5‧‧‧Outer casing

51‧‧‧Combination Department

Claims (12)

An optical projection device comprising: an outer casing; at least one joint defined on one side of the outer casing, wherein the outer casing is detachably disposed outside an instrument panel; and an imaging unit disposed on the outer casing And a mirror disposed on the side of the imaging unit for receiving and reflecting the predetermined image; one disposed in the outer casing and located on the reflective path of the mirror a reflective curved mirror for adjusting the imaging path and reducing the virtual image aberration, and projecting the predetermined image onto the windshield, thereby reflecting to the user's eyes, and imaging the virtual image of the predetermined image on the outer side of the windshield; At least one optical lens disposed on the outer casing and located on the imaging path is for amplifying the predetermined image. The optical projection device of claim 1, wherein the optical lens is a Fresnel lens. The optical projection device of claim 2, wherein the optical lens has a protective layer thereon. The optical projection device of claim 1, wherein the reflective curved mirror system comprises a plurality of curvatures. The optical projection device of claim 1, wherein the imaging unit and the mirror define a first angle, the mirror and the reflective curved mirror define a second angle, and the imaging unit and the The reflective curved mirror defines a third angle, and the first angle is 15 degrees to 70 degrees, the second angle is 30 degrees to 90 degrees, and the third angle is 75 degrees to 140 degrees. The optical projection device of claim 5, wherein an optimum value of the first angle is 30 degrees to 40 degrees, and an optimum value of the second angle is 50 degrees to 60 degrees, and the The optimum value of the three angles is 95 degrees to 105 degrees. The optical projection device of claim 1, wherein the housing has a wireless connection module electrically connected to the imaging unit for receiving the predetermined image and transmitting it to The imaging unit. The optical projection device of claim 1, wherein the outer casing is provided with at least one angle adjusting device for changing an angle at which the imaging path projects the outer casing. The optical projection device of claim 8, wherein the angle adjusting device comprises at least one driving component, a memory unit for recording an angle parameter, and a magnetic component disposed on the outer casing and electrically coupled to the driving component And an operation module of the memory unit, wherein the angle parameter is selected to set the driving element. The optical projection device of claim 9, wherein the memory unit records different angle parameters according to different windshield angles of different models. The optical projection device of claim 1, wherein the imaging unit, the mirror and the reflective curved mirror are located at the same horizontal plane such that the imaging path obtains a component of a vertical direction only by the reflective curved mirror. The optical projection device of claim 1, wherein the mirror is one of a plane mirror or a convex mirror.