CN108107575A - Optical imaging device - Google Patents

Abstract

The present invention relates to an optical imaging device, which comprises an optical adjustment component, a reflector and an optical projection component. The optical adjustment component, the reflector and the optical projection component are arranged in a housing, and the image projected on a reflective surface is adjusted by the optical adjustment component, and the image is reflected by the reflective surface of the reflector to the optical projection component, and the optical surface of the optical adjustment component is the smallest area, so that the optical imaging device can project a better optical image through the optical projection component and reduce the cost.

Description

optical imaging device

technical field

The invention relates to an image device, especially an optical imaging device.

Background technique

With the advancement of optical and electronic technologies, optical imaging devices are continuously being developed in various life applications, such as projectors, liquid crystal displays, etc., and now the industry has even developed Head Up Displays (Head Up Displays) for driving on vehicles. Generally referred to as HUD, it has been widely used as a driving aid tool for vehicles. It provides drivers with no need to look down at the instrument panel on the driving position, and can see the important driving information required within the general sight range, which can reduce the The frequency of looking down at the instrument can avoid distraction or loss of state awareness to improve driving safety. Therefore, the head-up display can integrate and replace the traditional various instrument panels, such as speedometer, fuel gauge, status warning lights and so on.

However, moreover, a general optical imaging device needs to achieve multiple optical paths in a limited space to form effective optical imaging, so the design of such optical components will increase the development cost of the optical imaging device. Furthermore, the optical imaging is projected on The windshield in front of the driver's seat of the vehicle, and the optical imaging on the windshield will be visually deformed due to the slope of the windshield, so the deformation and development cost of the optical imaging on the windshield have always been The question that the industry is constantly thinking about.

To sum up, the present invention proposes an optical imaging device for the above-mentioned technical shortcomings, which projects an adjusted image through a smaller-sized optical adjustment component to reduce equipment costs, and provides distortion compensation through the optical adjustment component , to counteract the image distortion problem on the windshield, thereby providing better optical imaging effects for limited spaces.

Contents of the invention

An object of the present invention is to provide an optical imaging device, which can reduce the cost of optical imaging equipment by optically adjusting the optical surface with a smaller area size.

An object of the present invention is to provide an optical imaging device, which provides distortion compensation through an optical adjustment component, so as to produce better optical imaging.

The invention relates to an optical imaging device, which includes a casing, an optical adjustment component, a reflection mirror and an optical projection component. The optical adjustment component, the reflector and the optical projection component are all arranged in the housing and adjusted by the optical adjustment component for projecting the adjusted image to the reflective surface of the reflective mirror, and then the projected image is projected by the reflective surface of the reflective mirror Reflected to the projection surface of the optical projection component for projecting the adjusted image to the outside of the casing. The areas of the optical surfaces of the optical adjustment component are smaller than the areas of the reflective surface and the projective surface. Therefore, the cost of the optical imaging device is reduced, and better optical imaging can be provided in a limited space.

Description of drawings

Fig. 1: it is the perspective view of optical imaging device of the present invention;

Fig. 2: it is another perspective view of the optical imaging device of the present invention;

Fig. 3: it is the front view of an embodiment of the optical module of the present invention;

Fig. 4: it is the sectional view of an embodiment of the optical module of the present invention;

Figure 5: It is a schematic diagram of the optical path of an embodiment of the optical module of the present invention;

Figure 6: It is a schematic diagram of the optical path of another embodiment of the optical module of the present invention;

Fig. 7: it is the side view of optical imaging device of the present invention;

Fig. 8: it is another side view of the optical imaging device of the present invention;

Figure 9: it is a top view of the optical imaging device of the present invention;

Figure 10: It is a schematic diagram of the use of the optical imaging device of the present invention;

FIG. 11 : It is another schematic diagram of the use of the optical imaging device of the present invention.

[Description of drawing number comparison]

1 Optical imaging device

10 housing

102 openings

104 lenses

12 Optical adjustment components

122 optical surface

14 mirrors

142 reflective surface

16 Optical projection components

162 projection surface

18 display devices

20 First fixed structure

211 First fixed point

221 Second fixed point

231 Third fixed point

240 Fixing seat

30 Second fixed structure

310 The first fixed part

320 Second fixed part

330 The third fixed part

340 Mount

4 body

41 Dashboard

42 frame

43 windshield

D1 distance

D2 distance

D3 distance

IMG image

IMG1 Image

PIMG1 raw image

PIMG2 Anamorphic Image

PIMG4 calibrated image

R1 optical path

R2 optical path

R3 optical path

S1 optical path

V line of sight

Detailed ways

In order to make the structural features of the present invention and the achieved effects have a further understanding and recognition, preferred embodiments and detailed descriptions are specially used, which are described as follows:

Please refer to FIG. 1 to FIG. 4 , which are a perspective view, another perspective view, a front view and a cross-sectional view of the optical imaging device of the present invention. As shown in the figure, the optical imaging device 1 of the present invention includes a casing 10 , an optical adjustment component 12 , a mirror 14 and an optical projection component 16 . The optical adjustment assembly 12 is arranged in the housing 10 for adjusting an image IMG projected on the optical adjustment assembly 12 and projecting the adjusted image IMG1; the mirror 14 is arranged on one side of the optical adjustment assembly 12, and Located on an optical projection path of the optical adjustment component 12 for reflecting the adjusted image IMG1 projected by the optical adjustment component 12; and an optical projection component 16, which is arranged on one side of the mirror 14 and is On an optical reflection path of the reflector 14, the adjusted image IMG1 reflected by the reflector 14 is projected, and passes through the opening 102 and the lens 104 of the housing 10, wherein an optical adjustment component 12 The area of the surface 122 is smaller than the areas of the reflecting surface 142 of the mirror 14 and the projecting surface 162 of the optical projection assembly 16 .

As shown in FIG. 5 , a display device 18 projects the image IMG to the optical adjustment assembly 12 , and the display device 18 can be disposed inside the casing 10 . The optical paths produced by the display device 18, the optical adjustment assembly 12, the mirror 14, and the light projection member 16 have four optical paths S1, R1, R2, and R3, which are not interlaced with each other. The optical projection assembly 16 used can be a spherical mirror ( For example: concave spherical mirror) design, thereby producing virtual image imaging, the size of the optical surface 122 of the optical adjustment assembly 12 is the smallest, and the complex optical adjustment function is completed by the optical adjustment assembly 12 to complete most of the functions, so that the optical adjustment of the mirror 14 Simplified functions. The mirror surface of the optical adjustment component 12 is smaller than the mirror surface of the reflector 14 , and the optical design is carried out through the optical surface of the optical adjustment component 12 , such as optical adjustment and changing the curvature of the mirror surface for optical compensation and so on. Such a relative cost is due to the fact that the mirror surface of the optical adjustment component 12 has the smallest area, and the total cost of the overall optical imaging device is more advantageous than the cost of general simple optical lenses.

The reflector 14 can be a flat lens that does not require multiple processing, and the minimum size optical adjustment component 12 is designed as a free-form surface with anti-deformation function for adjusting the display size and final deformation compensation. This design method can reduce the cost because of the small size and area. On the one hand, if the optical adjustment component 12 cannot solve all the problems, the optical adjustment function can be further added through the reflector 14, and its design flexibility is also increased. The optical adjustment component 12 and the reflector 14 can share optical functions. For example, the optical adjustment component 12 is responsible for adjusting the display size of the image, and the reflector 14 is responsible for adjusting the optical distortion. The functions of the optical adjustment component 12 and the reflector 14 can also be reversed, and then the design adjustment can be made according to the needs of users. Sharing the optical design in this way can control the production cost and make the optical effect of the design more excellent.

Referring again to FIG. 4 , the display device 18 and the optical adjustment assembly 12 of the optical imaging device 1 of the present invention can be located at the same level. However, the present invention is not limited thereto, and the display device 18 and the optical adjustment assembly 12 can be positioned at the same level. highly proximate location. In addition, the display device 18 may be located under the mirror 14; and the optical adjustment component 12 may be located under the optical projection component 16 (the spherical mirror in this embodiment). Through the above arrangement, the space occupied by the display device 18 , the optical adjustment component 12 , the reflector 14 and the optical projection component 16 in the housing 10 can be reduced to avoid increasing the overall volume of the optical imaging device.

Please refer to FIG. 6 , which is a schematic view of the optical path of another embodiment of the optical module of the present invention. As shown in the figure, the display device 18 displays an original image PIMG1 , which is projected on the windshield 43 through the optical adjustment component 12 , the mirror 14 and the optical projection component 16 . At this time, the user can use the optical adjustment component 12 to perform distortion compensation. By changing the surface curvature of the optical adjustment component 12 , the original image PIMG1 is reflected by the optical adjustment component 12 to present a deformed image PIMG2 . After the deformed image PIMG2 is projected on the windshield 43 through the reflector 14 and the optical projection assembly 16, the deformed image PIMG2 produces an image change through the slope of the windshield 43, wherein the slope of the windshield 43 corrects the deformed image PIMG2 to The visual corrected image PIMG4, that is, the image seen on the windshield 43 through the line of sight V is the corrected image PIMG4. What the user sees is the corrected image PIMG4 that approximates the shape of the original image PIMG1 output by the display device 18 . For example, the original image PIMG1 can be a rectangular image; by changing the surface curvature of the optical adjustment component 12, the deformed image PIMG2 presented after the reflection of the optical adjustment component 12 can form a trapezoidal image; the deformed image PIMG2 can be captured by the windshield The slope 2 of 43 is corrected to a corrected image PIMG4 which is also a rectangular image. It is worth noting that the surface curvature of the optical adjustment component 12 needs to be designed corresponding to the surface curvature, thickness, and inclination of the windshield 43, so as to generate a deformed image PIMG2 with a deformation compensation function, so that the corrected image seen by the user's eyes PIMG4 approximates the shape of the original image PIMG1 output by the display device 18 .

Following the above, because the optical adjustment assembly 12 adjusts the image displayed on the display device 18 to generate distortion compensation, and in addition, the optical projection assembly 16 reflects the image onto the slope of the windshield 43 and the image will be deformed due to the angle of the slope. That is to say, the image will be deformed on the slope of the windshield 43 without adjustment, which is opposite to the deformation compensation of the optical adjustment assembly 12, so the image deformation on the windshield 43 will be compensated by the deformation of the optical adjustment assembly 12 Canceling each other, the corrected image can be seen visually on the windshield 43 .

Since the size of the optical adjustment assembly 12 is the smallest among the above-mentioned optical adjustment assembly 12, mirror 14 and optical projection assembly 16, the optical adjustment assembly 12 provides an optical compensation mechanism for the user to use the optical imaging device to obtain better results. Optical imaging, thus avoiding the slope problem of the windshield, while effectively reducing the cost of the optical imaging device.

Referring again to FIG. 1 and FIG. 2 , they are a perspective view and another perspective view of the optical imaging device of the present invention. As shown in the figure, the optical imaging device 1 of the present invention further includes a first fixing structure 20 and a second fixing structure 30 . Please refer to FIG. 7 and FIG. 8 together, which are a side view and another side view of the optical imaging device of the present invention. In this embodiment, the first fixing structure 20 and the second fixing structure 30 are respectively disposed on two sides of the casing 10 . The first fixing structure 20 further includes a first fixing part 210 , a second fixing part 220 , a third fixing part 230 and a fixing seat 240 . The first fixing part 210 , the second fixing part 220 and the third fixing part 230 are located around the fixing seat 240 . The first fixing part 210 has a first fixing point 211 , the second fixing part 220 has a second fixing point 221 , and the third fixing part 230 has a third fixing point 231 . The relative positions of the first fixed point 211 , the second fixed point 221 and the third fixed point 231 are fixed, that is, the linear distance between the first fixed point 211 and the second fixed point 221 is fixed as the distance D1 . The linear distance between the second fixed point 221 and the third fixed point 231 is fixed as D2. The linear distance between the first fixed point 211 and the third fixed point 231 is fixed as a distance D3.

Furthermore, the relative positions of the first fixing point 211 , the second fixing point 221 and the third fixing point 231 relative to the fixing seat 240 are not fixed. Here, the position of the fixing seat 240 can be adjusted according to the needs of users. In addition, the structural designs of the first fixing structure 20 and the second fixing structure 30 are the same. The second fixing structure 30 further includes a first fixing part 310 , a second fixing part 320 , a third fixing part 330 and a fixing seat 340 . The first fixing part 310 , the second fixing part 320 and the third fixing part 330 are located around the fixing seat 340 . The relative positions of the details of the second fixing structure 30 are similar to those of the first fixing structure 20 , so details are not repeated here.

Please also refer to FIG. 9 , which is a top view of the optical imaging device of the present invention. In this embodiment, the structures of the first fixing structure 20 and the second fixing structure 30 may be the same or different. The fixing base 240 of the first fixing structure 20 and the fixing base 340 of the second fixing structure 30 are used to fix the vehicle frame in the vehicle body, and the first fixing structure 20 and the second fixing structure 30 can be symmetrical or asymmetrical structures. The relative positions of the fixing base 240 of the first fixing structure 20 and the fixing base 340 of the second fixing structure 30 relative to the housing 10 may be inconsistent. The relative positional relationship between the fixing seat 240 of the first fixing structure 20 and the fixing seat 340 of the second fixing structure 30 can be adjusted according to the frame of various vehicles.

Please refer to FIG. 10 and FIG. 11 together, which are a schematic view of the use of the optical imaging device of the present invention and another schematic view of use. As shown in the figure, in this embodiment, the fixing base 240 of the first fixing structure 20 and the fixing base 340 of the second fixing structure 30 are used to fix a vehicle frame 42 behind an instrument panel 41 in a vehicle body 4 In general, the design relative positions of the instrument panel 41 and the vehicle frame 42 of various types of vehicles are different, which has an influence on the projection angle projected on a windshield 43 . Therefore, relative positions of the first fixing point 211 , the second fixing point 221 and the third fixing point 231 of the first fixing structure 20 of the present invention are not fixed relative to the fixing base 240 . The relative relationship of the second fixing structure 30 is the same as that of the first fixing structure 20 in structural design. Moreover, the structures of the first fixing structure 20 and the second fixing structure 30 may be the same or different. In this way, the user can adjust the first fixing structure 20 and the second fixing structure 30 to be fixed in the vehicle body structure 4 in front of the driver's seat according to various types of vehicles, thereby fixing the optical imaging device 1 on the vehicle in front of the driver's seat. Body structure 4.

Since the housing, the first fixing structure and the second fixing structure are not integrally formed, the above-mentioned combination of the first fixing structure and the second fixing structure provides developers with the ability to design the corresponding first fixing structure according to the frame structure It is assembled with the second fixing structure on the casing for setting the optical imaging device at the position in front of the driver's seat. Based on the fact that the first fixed structure and the second fixed structure occupy a relatively small proportion of the whole, while the housing occupies a relatively large proportion of the whole and there are many devices installed in the housing, so the developer redesigned the first fixed structure and the second fixed structure for different vehicle body structures. The structure of the second fixed structure is adapted to different car body structures, which greatly reduces product development costs compared to redesigning the overall structure.

The above is only a preferred embodiment of the present invention, and is not intended to limit the implementation scope of the present invention. All equivalent changes and modifications made in accordance with the shape, structure, characteristics and spirit described in the scope of the claims of the present invention shall be included in the scope of the claims of the present invention.

Claims (10)

1. An optical imaging device, characterized in that it comprises: a shell; An optical adjustment component, which is arranged in the housing and has an optical surface, for adjusting an image projected on the optical adjustment component and projecting the adjusted image; A reflection mirror, which is arranged on one side of the optical adjustment component and has a reflective surface, the reflection mirror is located on an optical projection path of the optical adjustment component, for reflecting the adjusted image projected by the optical adjustment component ;as well as an optical projection component, which is arranged on one side of the reflector and has a projection surface, the optical projection component is located on an optical reflection path of the reflector, for projecting the adjusted image reflected by the reflector, Wherein the area of the optical surface is smaller than the areas of the reflection surface and the projection surface. 2. The optical imaging device according to claim 1, wherein the optical projection component is a spherical mirror. 3. The optical imaging device according to claim 1, wherein a display device projects the image to the optical adjustment component, and the optical path of the display device, the optical adjustment component, the mirror and the optical projection component not interspersed with each other. 4. The optical imaging device according to claim 1, wherein a display device projects the image to the optical adjustment member, and the optical adjustment component deforms the image and reflects it to the mirror for reflection and deformation The image is sent to the optical projection assembly for projecting the deformed image onto an inclined plane of a windshield, and the deformed image is mapped on the inclined plane. 5 . The optical imaging device as claimed in claim 4 , wherein the optical adjustment member deforms the image into a deformed image, which is adjusted to a corrected image through the slope of the windshield. 6 . 6. The optical imaging device as claimed in claim 5, wherein the optical adjustment member adjusts the display size of the image. 7. The optical imaging device according to claim 1, further comprising: a first fixing structure disposed on a first side outside the casing; and A second fixing structure is arranged on a second side outside the casing. 8 . The optical imaging device according to claim 7 , wherein the first fixing structure and the second fixing structure are combined structures, which are combined outside the casing. 9. The optical imaging device according to claim 7, wherein the structure of the first fixing structure and the second fixing structure can be the same or different, and the first fixing structure and the second fixing structure Consistent or non-consistent relative positions with respect to the housing. 10. The optical imaging device according to claim 7, wherein the first fixing structure and the second fixing structure respectively have a plurality of fixing points and a fixing seat, and there are fixed straight lines between the fixing points distance, and the relative positions of the fixed points relative to the fixed seat can be adjusted.