CN103048786B - Multi-optical path head-up imaging device - Google Patents

Abstract

The invention provides a multi-light path head-up display device, comprising: the virtual image generation unit is used for correspondingly generating a plurality of virtual images to a plurality of perspective plane mirrors respectively, and the perspective plane mirrors are correspondingly reflected to form a large-area virtual image respectively; according to the technical content of the invention, the size of the optical element of the lens or the mirror can be directly reduced, so that the multi-light path display device can be miniaturized, a large-area display range can be implemented, a required carrier information picture and an external scene are completely overlapped, and the defect that a large-area display picture cannot be provided due to the fact that a single light path display device is used in the past and only a small-area display is used can be effectively solved.

Description

Multi-optical path head-up imaging device

technical field

The present invention relates to an optical system architecture, in particular to a multi-optical head-up display device suitable for mobile vehicles.

Background technique

Head Up Display (HUD) is the earliest flight aid instrument implemented on aircraft, which allows the driver to see the information on the instrument without looking down, so as to avoid interruption of attention and loss of state awareness ( Situation Awareness), because the use of the head-up display device is not only convenient but also can improve flight safety, so it can be used on any kind of mobile vehicle, not only for civil aircraft, but also for cars and ships.

However, the head-up display function in the prior art in the past only provides some simple instrument data information with a very small display area within the driver's line of sight, displaying information such as vehicle operating temperature, engine speed, speed per hour or Guidance display of some small arrows, etc.; now, with the advancement of the technological age, drivers can have more other diverse choices. The head-up display device can also display tire pressure, gear shift prompts or steering, reversing prompts, Obstacle warning, flight altitude, flight speed, heading, vertical speed change, aircraft tilt angle and wind direction information, etc., any information required for mobile vehicles such as traveling or idling, but any information currently on the market It is known that a head-up imaging device belongs to a single optical path imaging device. It is not easy to integrate this single optical path imaging device with the instrument panel as a device, because the required volume of the head-up imaging device is relatively large. The instrument panel full of wires and connectors is too large, and according to the principle of optical imaging, no matter what lens or mirror is used, the input image and imaging area are proportional to the size of the optical elements of the lens and mirror , not to mention that based on the projection quality, the size of the optical components of the head-up display device should not be further reduced. Therefore, it is very difficult to achieve a large display area in a cockpit with limited space, and the display area is too small. The display information of the head-up display device can only allow the driver to briefly glance at the instrument console with peripheral vision, so the driver cannot immediately filter out important key information. If the driver pays too much attention to the key information of the head-up display device, instead It is easy to distract the driver and make the driver dangerous.

In view of this, the present invention aims at the above problems and proposes a multi-optical path head-up imaging device, which not only can directly reduce the size of the optical elements of the lens or mirror, but also has a large-area imaging range. A multi-functional high-end multi-optical path head-up display device with safety and efficiency.

Contents of the invention

The main purpose of the present invention is to provide a multi-optical path head-up imaging device, which uses the structure of the multi-optical path device to cut the image or use multiple imaging units to generate at least two input images and then supplement it with the technical means of re-gathering and displaying , the present invention can directly reduce the size of the optical elements of the lens or mirror, and has a large area of imaging range. The information screen provided by the multi-light path display device can be completely superimposed with the external scene or the information screen can be made to correspond to the scene. The matching display can help the driver to pay attention to the key information of the mobile vehicle, which will effectively solve the problem that the single optical path imaging device can only display in a small area in the past.

Another object of the present invention is to provide a multi-optical path head-up imaging device, which generates at least two input images with a multi-optical path structure to collect and display, and through the adjustability of the perspective plane mirror, it can be adjusted at any time according to the height and sitting posture of the driver. By adjusting an appropriate display angle, compared with the single optical path display device used in the past, the present invention can provide the driver with full concentration on the road conditions ahead and driving comfort.

In order to achieve the above-mentioned purpose, the present invention provides a multi-optical path head-up imaging device, including: at least one imaging unit to generate at least two input images; a plurality of relay lenses, which can adjust the refraction angles of the input images to correspond to The input image is received and transmitted; a virtual image generating unit can respectively receive the input image and generate a plurality of virtual images; and a plurality of perspective plane mirrors can respectively receive the virtual image and reflect it into a large-area virtual image.

In the following, a detailed description will be given through specific embodiments in conjunction with the attached drawings, and it will be easier to understand the purpose, technical content, characteristics and effects of the present invention.

Description of drawings

Fig. 1 is a device architecture block diagram of the present invention;

Figure 2A is a schematic diagram of the device of the present invention;

Figure 2B is a schematic side view of the present invention;

Fig. 3 is a schematic diagram of imaging of the virtual image generating unit of the present invention;

Fig. 4 is the large-area imaging schematic diagram of the present invention;

Fig. 5 is a schematic diagram of the optical characteristics of the concave mirror of the present invention;

Fig. 6 is the imaging schematic diagram of arc mirror of the present invention;

FIG. 7A is a schematic diagram of the optical path of the present invention;

Fig. 7B is a partially enlarged schematic diagram of Fig. 7A of the present invention;

Fig. 8A is a schematic diagram of individual imaging of the present invention;

Fig. 8B is a schematic diagram of the focusing range of the present invention;

FIG. 9A is a schematic diagram of a mirror segmented image according to the present invention;

FIG. 9B is a schematic diagram of image segmentation in the present invention;

Fig. 10A is a schematic diagram of the adjustable perspective plane mirror of the present invention;

Figure 10B is a schematic plan view of the present invention;

Figure 10C is a schematic top view of the present invention;

Fig. 11A is a schematic diagram of an image of the present invention with a width of 4 meters and a height of 1 meter;

Fig. 11B is a schematic diagram of an image with a width of 2 meters and a height of 1 meter according to the present invention;

Fig. 11C is a schematic diagram of an image with a width of 1 meter and a height of 1 meter in the present invention;

Figure 11D is a schematic diagram of the size of the concave mirror of the image of the present invention with a width of 4 meters and a height of 1 meter;

Figure 11E is a schematic diagram of the size of the concave mirror of the image of the present invention with a width of 2 meters and a height of 1 meter;

FIG. 11F is a schematic diagram of the dimensions of the concave mirror of an image with a width of 1 meter and a height of 1 meter according to the present invention.

Explanation of reference signs: 10-multi-optical path head-up imaging device; 12-camera unit; 14-processing unit; 16-imaging unit; 18-optical mechanism; 20-relay lens; 22-virtual image generation unit; 24-perspective Plane mirror; 26-concave mirror; 28-convex lens; 30-real lane line; 32-virtual image lane line; 34-windshield; 36-curved mirror; 38-focusing unit; 40-focusing range; 42-reflection Mirror; 44-rotation mechanism; 46-rotation actuation mechanism; S-object distance; S'-image distance; f-focal length; m-magnification; X-horizontal axis; Y-vertical axis; p-inner diameter; d- outside diameter.

Detailed ways

The present invention is to provide a multi-optical-path head-up display device. Using the structure of the multi-optical-path device, the image can be cut or a plurality of display units can generate at least two input images and then supplemented with re-gathered images for display. Large-area virtual image, using the technical content of the present invention can directly reduce the size of the optical element of the lens or mirror, and has a large-area imaging range, and can be adjusted according to the height and sitting posture of the driver through the adjustability of the perspective plane mirror The most appropriate display angle.

Regarding the embodiment of the present invention, first refer to FIG. 1 to illustrate the block diagram of the device architecture of the present invention. As shown in the figure, the multi-optical path head-up display device 10 of the present invention can be equipped with at least one charge-coupled device or complementary metal - the camera unit 12 of the oxidation-semiconductor element and the processing unit 14 that uses at least one such as a central processing unit, a microprocessor or a single-chip microcomputer, the processing unit 14 is electrically connected to the camera unit 12 and the imaging unit 16, and the camera unit 12 One or more can be used to read the front view, such as the front image of a mobile vehicle such as lane lines, horizontal lines or obstacle outlines, or a single or multiple camera units 12 can be placed around the vehicle to read The image of the blind spot of the mobile vehicle's field of view, the image read by the camera unit 12 is used as an external signal, and the processing unit 14 simultaneously receives and processes such as the vehicle's operating temperature, rotation speed, speed per hour, guidance information, tire pressure, replacement, etc. Gear prompt, steering, reversing prompt, obstacle warning, flight altitude, flight speed, heading, vertical speed change, vehicle tilt angle, wind direction information, vehicle traveling or idling speed signal as a vehicle signal, or can be reused The obstacle contour detection is used as the obstacle distance warning signal. After the processing unit 14 integrates the external signal, the vehicle signal and the obstacle distance warning signal into the key information required by the mobile vehicle, the key information is processed into an image signal, and finally The processing unit 14 can transmit the image signal to the display unit 16 , and then the display unit 16 generates at least one input image to the optical mechanism 18 .

The first embodiment of the multi-optical path head-up imaging device is described here. Please refer to FIG. 2A and FIG. 2B to illustrate the schematic diagram of the device of the present invention and the schematic side view of the present invention. A multi-optical path head-up display device 10 may include: at least two display units 16 such as liquid crystal displays or digital light processing projectors and at least one optical mechanism 18, and the display unit 16 can generate at least two or more input images for The optical path is transmitted to the optical mechanism 18, wherein the optical mechanism 18 may include: a plurality of relay lenses 20, the relay lenses 20 respectively correspond to the angles of refracting the input image after receiving the incident light of the input image, and the relay lens 20 adjusts the input The output angle of the image is such that the input image is transmitted to the virtual image generation unit 22 which can be a convex lens or a concave mirror. After the virtual image generation unit 22 receives at least two input images correspondingly, a plurality of virtual images are generated. Finally, a plurality of perspective plane mirrors 24 and After correspondingly receiving a plurality of virtual images, a large-area virtual image is collected with the most appropriate collection and reflection angle; since the present invention uses an input image with an optical path as an implementation mode, in the first embodiment of the present invention, it is based on At least two input images are used as an example to illustrate, and then two optical paths need to be provided, and the multi-optical path head-up imaging device 10 then adopts two relay lenses 20, a virtual image generating unit 22 and two perspective plane mirrors 24, therefore, in the present invention The disclosed technical features have a relationship between the number of input images and the number of optical paths. The relay lens 20 and the perspective plane mirror 24 can be equal to the number of input images. Of course, the multi-light path head-up display device 10 can also use more than two input images and match them. More than two optical paths, such as using three input images, the multi-optical path head-up imaging device 10 uses three relay lenses 20, a virtual image generating unit 22, and three perspective plane mirrors 24. In addition, the optical One or more sets of mechanisms 18 can be used. The implementation method only needs to project the input images projected by the imaging unit 16 to multiple sets of optical mechanisms 18 respectively. However, the preferred embodiment of the present invention uses one set as an illustration. The number of the optical mechanism 18 and the number of light paths only needs to be changed most appropriately according to different requirements. The implementation principles are the same as those disclosed in FIG. 2A and FIG. 2B , so no further description is given.

Referring to Fig. 3, Fig. 4, Fig. 5 and Fig. 6, to illustrate the imaging schematic diagram of the virtual image generating unit 22 of the present invention, the large-area imaging schematic diagram, the concave mirror optical characteristic schematic diagram and the curved mirror imaging schematic diagram, and refer to Fig. 2A at the same time, as shown in Fig. 3 and FIG. 4, the virtual image generating unit 22 of the present invention can be a concave mirror 26 or a convex lens 28, all of which utilize the optical principle of upright magnifying a virtual image to generate a virtual image, and image it to the outside of the window in a large-area manner, resulting in The virtual image can at least match the actual lane line 30 and correspond to the virtual image lane line 32; as shown in Figure 5, the optical characteristics of the concave mirror 26 of the present invention, when the radius of curvature R is ∞, it is a concave mirror 26, and the focal length is ∞; When the radius of curvature R is 100, it is a concave mirror 26 with a radian, and its focal length is 50. Concave mirror 26 can produce virtual image, and its focal length is as formula (1)

f＝R/2 (1)

The curved surface of the concave mirror 26 can also be set as an aspheric surface, which can avoid optical aberrations. When the imaging unit 16 is placed within the focal length, the concave mirror 26 will present a magnified virtual image, and its magnification is as in formula (2) and formula (3)

1/S+1/S'＝1/f

m=S′/S (3)

In formulas (1) to (3), R is the radius of curvature, S is the object distance, S' is the image distance, f is the focal length and m is the magnification.

As shown in Figure 6, a multi-light path head-up display device 10 provided by the present invention, if its technical content is applied to a vehicle, the area of the provided display screen can correspond to the virtual image lane line 32, and its screen can at least cover a width of 4 meter, 1 meter high, wherein the perspective plane mirror 24 is a flat plate of high reflectivity optical film, its transmittance can be between 70%～75%, reflectivity can be between 30%～25%, and swing Put it in the window of the windshield 34, so that the driver can watch the front virtual image through the perspective plane mirror 24 and the windshield 34 in sequence, and the virtual image will overlap with the front scene or make the virtual image correspond to the front scene As a display, when the perspective plane mirror 24 is matched with a large number of optical paths, the perspective plane mirror 24 can be made into an arc mirror 36 to display a large picture. Fig. 4 and Fig. 6 of the present invention are described with the vehicle as the embodiment, so enumerate the virtual image lane line 30 as an auxiliary description, of course, on any other mobile carrier such as aircraft and ships, if you want Corresponding to the horizontal line, its implementation principle is the same, so it will not be repeated.

Refer to Figure 7A, Figure 7B, Figure 8A and Figure 8B to illustrate the schematic diagram of the light path, the partially enlarged schematic diagram of Figure 7A, the schematic diagram of individual imaging, and the schematic diagram of the focusing range, and refer to Figure 2A at the same time, as shown in Figure 7A, the image The optical path transmission of the imaging unit 16, the relay lens 20, the virtual image generating unit 22 and the perspective plane mirror 24 utilize their placement positions to present the optical path trajectory of the present invention, as shown in Figure 7A and Figure 8A, and Figure 7B is a diagram The partially enlarged schematic diagram of 7A, the partially enlarged part is the multi-optical path head-up imaging device 10 of the present invention, wherein the multi-optical path head-up imaging device 10 further includes a focusing unit 38, and the focusing unit 38 has a focusing range 40 , the perspective plane mirror 24 can reflect a large-area virtual image into the focusing range 40, and the human eye 42 can observe a large-area virtual image in the focusing range 40, as shown in FIG. 8A, the present invention uses at least two input images as For example, two optical paths are used to reflect the left and right halves of the virtual image into the viewing range 40 . When the virtual images of each part are merged, as shown in FIG. 8B , what can be viewed in the focusing range 40 is a large-area virtual image. show.

The second embodiment of the multi-optical path head-up imaging device is described here. Please refer to FIG. 9A and FIG. 9B to illustrate the schematic diagram of mirror split image and the schematic diagram of image split. As shown in the figure, the second embodiment of the present invention can also be used A single imaging unit 16 is used to generate an image, and multiple reflectors 42 are used to divide the image according to the same optical principle as the first embodiment. As a technical means of the second embodiment, multiple reflectors 42 can be placed on the display. between the image unit 16 and the relay lens 20, so that the mirror 42 can divide and reflect the image into at least two or more input images, the mirror 42 can reflect the input images to the relay lens 20 respectively, and the plurality of mirrors 42 The divided image is transmitted to the relay lens 20 through the optical path in the form of at least two input images or more than two multi-segment input images, which can also achieve the purpose and effect of displaying virtual images in a large area with multiple optical paths in the first embodiment. The transmission mode of the optical path behind the relay lens 20 in this embodiment is the same as that described in the first embodiment, so it will not be repeated; as shown in FIG. The four parts divide the input image into four segments to transmit the optical path and reflect it to the relay lens. Therefore, it can be seen from the above technical content that when more mirrors 42 are used in the second embodiment, the image can be divided into more Multiple parts, its implementation is the same as that shown in Figure 9A, and will not be described in detail; referring to Figure 9A and Figure 2A, as shown in the figure, in the second embodiment of the present invention, at least as described in the first embodiment Two input images need to be matched with at least two optical paths. Therefore, the technical feature disclosed in the second embodiment is that the number of the relay lens 20, the perspective plane mirror 24 and the reflector 42 can be equal to the number of input images, and the head-up display with multiple optical paths Of course, the imaging device 10 can also use more than two input images with more than two optical paths, and the principle is the same as that disclosed in FIG. 9A , so it will not be repeated here.

Referring to Fig. 10A, Fig. 10B and Fig. 10C, to illustrate the schematic diagram of the adjustable perspective plane mirror, the schematic diagram of the plane view and the schematic diagram of the top view of the present invention, the perspective plane mirror 24 adopted in the present invention has adjustability, and the driver can adjust it according to his height and sitting posture. Adjust the appropriate display angle at any time, as shown in Figure 10A, the perspective plane mirror 24 can be fixed on a rotating mechanism 44, and the rotating mechanism 44 is then arranged on a rotating actuating mechanism 46, and the rotating mechanism 44 can provide horizontal axis X clockwise And turn it counterclockwise, the rotation actuating mechanism 46 can be used to turn the vertical axis Y clockwise and counterclockwise, so that the perspective plane mirror 24 is adjustable, and can adjust the appropriate display angle at any time according to the height and sitting posture of the driver As shown in FIG. 10B and FIG. 10C , the rotation mechanism 44 and the rotation actuation mechanism 46 can adjust the optimal display angle of the perspective plane mirror 24 according to the position of the human eye.

Refer to Fig. 11A, Fig. 11B, Fig. 11C, Fig. 11D, Fig. 11E and Fig. 11F to illustrate the schematic diagram of the image with a width of 4 meters and a height of 1 meter, the schematic diagram of an image with a width of 2 meters and a height of 1 meter, and a schematic diagram of an image with a width of 1 meter and a height of 1 meter A schematic diagram of a ruler image, a schematic diagram of the size of a concave mirror with a width of 4 meters and a height of 1 meter, a schematic diagram of the size of a concave mirror with a width of 2 meters and a height of 1 meter, and a schematic diagram of the size of a concave mirror with an image of 1 meter in width and 1 meter, and Referring to Fig. 2A, Fig. 3 and Fig. 9A at the same time, as shown in the figure, whether it is the first embodiment or the second embodiment, when the present invention matches an input image with an optical path, if the virtual image generating unit 22 uses a concave mirror 26 To present an image with a width of 4 meters and a height of 1 meter, the inner diameter of the concave mirror 26 is 547.138 mm and the outer diameter is 557.649 mm. The mirror 26 intends to present an image with a width of 2 meters and a height of 1 meter. At this time, the size of the concave mirror 26 has an inner diameter of 299.07 millimeters and an outer diameter of 302.65 millimeters. In the present invention, when four input images are matched with four optical paths, if the virtual image generating unit 22 is If the concave mirror 26 wants to present an image with a width of 1 meter and a height of 1 meter, the required optical element size inner diameter is 192.251 millimeters and the outer diameter is 199.297 millimeters. Therefore, it can be seen from the above, so whether the present invention adopts the first In the embodiment or the second embodiment, when the multi-optical path head-up display device 10 can use more input images with more optical paths or divide more images by the mirror 42, the size of the optical elements of the virtual image generating unit 22 It will only become smaller, but it can still have a large-area imaging range, so the multi-optical path head-up imaging device 10 of the present invention can be miniaturized and installed in the control room more easily, and can be adjusted through the perspective plane mirror 24 Adjust the appropriate display angle with the driver's height and sitting posture.

Although the foregoing embodiments of the present invention are disclosed above, they are not intended to limit the present invention. Changes and modifications made without departing from the spirit and scope of the present invention all belong to the claim of the patent scope of the present invention. For the patent scope defined by the present invention, please refer to the appended application patent scope.

Claims (9)

1. a multi-light-path head-up development device, is characterized in that, comprising: a visualization unit, multiple catoptron, multiple relay lens, a virtual image generation unit and multiple perspective plane mirror, wherein,

This visualization unit is for generation of an image;

The plurality of catoptron is located between this visualization unit and the plurality of relay lens, becomes multiple input image for reflecting and splitting this image, and by the plurality of input image respectively correspondence reflex to the plurality of relay lens;

The plurality of relay lens, for adjusting the refraction angle of the plurality of input image, receives with corresponding respectively and transmit the plurality of input image;

This virtual image generation unit is for receiving the plurality of input image and producing multiple virtual image; And

The plurality of perspective plane mirror is corresponding respectively to be received the plurality of virtual image and is reflected into a large area virtual image.

2. multi-light-path head-up development device according to claim 1, is characterized in that, more comprises one and poly-looks unit, and this is poly-has one depending on unit and poly-ly look scope, and this perspective plane mirror poly-ly to be looked in scope to this for reflecting this large area virtual image.

3. multi-light-path head-up development device according to claim 1, it is characterized in that, more comprise at least one image unit and at least one processing unit, this processing unit is electrically connected this image unit and this visualization unit, this image unit is for reading an external signal, this processing unit becomes an image signal for go forward side by side this external signal of row relax and a carrier signal of this external signal receiving this image unit, this processing unit, for transmitting this image signal to this visualization unit, makes this visualization unit produce this input image.

4. multi-light-path head-up development device according to claim 3, is characterized in that, this external signal is lane line, horizontal line or barrier profile; This carrier signal is carrier working temperature, rotating speed, speed per hour, guiding information, tire pressure, gearshift are pointed out, turn to, prompting of moveing backward, barrier warning, flying height, flying speed, course, vertical speed rate changes, and advances or the signal of idling in carrier angle of inclination, wind direction information, carrier.

5. multi-light-path head-up development device according to claim 1, is characterized in that, this perspective plane mirror and this relay lens are equal with the quantity of this input image.

6. multi-light-path head-up development device according to claim 1, is characterized in that, this perspective plane mirror, this relay lens and this catoptron are equal with the quantity of this input image.

7. multi-light-path head-up development device according to claim 1, is characterized in that, this visualization unit is liquid crystal display or digital light processing projection device.

8. multi-light-path head-up development device according to claim 1, is characterized in that, this virtual image generation unit is concave mirror or convex lens.

9. multi-light-path head-up development device according to claim 1, it is characterized in that, this perspective plane mirror is the flat plate of high reflectance optical thin film, its penetrance is 70% ~ 75%, reflectivity is 30% ~ 25%, this perspective plane mirror has adjustability, adjusts suitable angles of display for carrying out.