TW201836878A - Adjustable full-time head-up display system capable of reading displayed images while wearing polarized sunglasses and providing best visual effects - Google Patents

Abstract

This invention relates to an adjustable full-time head-up display system, which comprises a display device, a rotating device, a windshield, and a second half-wave sheet. In which, the rotating device comprises a first half-wave sheet and a power module. The power module is controlled to rotate the first half-wave sheet to generate the back and forth interchange of S and P polarized light. This invention may solve the problems that the displayed image cannot be read while wearing the polarized sunglasses, and that the images are distorted in rainy days, thereby providing the driver with displayed images that may achieve the optimized visual effects at all times.

Description

 Adjustable full-time head-up display system  

The invention relates to an adjustable full-time head-up display system, in particular to an adjustable full-time head-up display system capable of achieving all-weather non-visual obstacles, thereby solving the problem that the head-up display cannot read the reading image of the polarized sunglasses and overcome The problem of image distortion in the rainy day provides the driver with a display image that optimizes the visual effect at all times, effectively improving driving safety.

According to the head-up display of the vehicle, it is usually placed under the instrument panel on the lower side of the windshield. The image light is projected up to the windshield and then reflected by the windshield to the driver's eyes. The general vehicle is especially for passenger use. The angle of the windshield of the car is mostly about 25 to 35 degrees from the horizontal. With safety considerations, the angle of view of the head-up display is usually designed at an angle of about 5 degrees under the driver's horizontal line of sight, which is easy for the driver to read. It does not block the important line of sight. The angle of incidence of the image light of the head-up display on the windshield is about 60 to 70 degrees.

As shown in the first figure, it is a curve of S polarized light, P polarized light, and reflectance according to Fresnel Equations. In the incident angle range, the reflectance of S-polarized light is much larger than that of P-polarized light. When the incident angle is close to 60 degrees, the reflectivity of P-polarized light is even close to zero, so the vehicle is under strong sunlight, and the display of the head-up display The picture needs to be strong enough to be read clearly by the driver. In order to increase the projection efficiency of the head-up display, the display screen of the general head-up display will use S-polarized light as the light source, or through the appropriate wave plate at the output. The output image light like the screen is converted into S-polarized light and then projected onto the windshield to obtain a relatively large amount of reflected light.

As shown in the second figure, where half-wave plate 6 is used with S-polarized light (represented by S in the figure), the problem of stacking can be solved because of the relationship between Brewster's angle and P-polarization. Light (indicated by P in the figure) gets near zero reflectance in the windshield G, but the use of S-polarized light (indicated by S in the figure) makes the polarized sunglasses invisible.

As shown in the third figure, the half-wave plate 6 with P-polarized light can solve the problem that the Brewster's angle low-reflection and polarized sunglasses can't see the image.

Please refer to the fourth figure, which uses a half-wave plate 6 with P-polarized light. When the raindrops are attached to the windshield G during rain, the reflective layer is at the outermost layer of the windshield G. Therefore, it will be affected by raindrops. The image of the head-up display will be reflected by the surface of the raindrop, which will cause irregular distortion and distortion of the image. This problem will also greatly reduce the utility of the head-up display.

In order to solve the above problems, the industry has continuously proposed various solutions, and related technologies can be considered as US 5,510,913, US 6,042,947, CN 201510635147.2, CN 201610609828.6, CN 201610715723.9, JP Kaiping 2-141720, TW public number 201621399, 201610862856, TW Patent No. I422860, I296720, I464493, I545375 and other patents.

In the foregoing patents, most of them have improved the function of the current head-up display device, but there are still some bottlenecks that are difficult to overcome. For example, some patent pre-issues have solved the problem that the head-up display cannot be worn on the windshield. Polarized sunglasses to read the problem, but when raindrops are attached to the windshield G, the image is distorted; therefore, to solve the above problems at the same time, there is no good solution to the problem so that the head-up display Use, can not meet the requirements of full-time use, but also the problem that drivers often criticize.

In view of the above-mentioned lack of the above formula, the inventor of the present invention has finally completed the adjustable full-time head-up display system of the present invention after numerous research and improvement, that is, the object of the present invention is to provide an all-weather non-visual adjustable adjustable full-time head-up The display system is used to solve the problem that the head-up display can not be read by the polarized sunglasses and overcome the distortion of the image in the rainy day, thereby providing the driver with the image display for optimizing the visual effect all the time, effectively improving the driving safety.

In order to achieve the above object of the present invention, the adjustable full-time head-up display system of the present invention comprises: a developing device; a rotating device comprising a first half-wave plate and a power module, the first half-wave plate setting In front of the developing device, the first half wave plate is coupled to the power module; a windshield includes a first glass and a second glass, and the image light projected by the developing device is in the windshield Reflecting; a second half wave plate disposed between the first glass and the second glass.

The first half wave plate and the second half wave plate are made of a transparent plastic material.

The rotating device further includes a switch, the switch controlling the power module to rotate the first half wave plate.

The rotating device further includes a signal switch, the signal switch controlling the power module to rotate the first half wave plate.

The above-mentioned developing device comprises a projection device and a developing screen, which is a developing screen with 45-degree linearly polarized light.

The above-mentioned developing device comprises a projection device and a developing screen, and the developing screen is a P-polarized developing screen.

The above-mentioned developing device comprises a projection device and a developing screen, and the developing screen is an S-polarized developing screen.

The power module described above is an electric motor.

The first half-wave plate described above is a fan-shaped sheet.

The above developing device comprises a projection device and a developing screen.

The adjustable full-time head-up display system of the present invention is characterized in that it provides an all-weather, non-visually adjustable full-time head-up display system, thereby solving the existing head-up display device and system, and being unable to wear polarized sunglasses to read images. The lack of, and overcome the problem of image distortion in the rainy day, allows the driver to select the output as S-polarized or P-polarized light by manual or automatic control according to the weather conditions, providing drivers with optimization throughout the day. Display images of visual effects to improve driving safety.

[study]

6‧‧‧Half wave plate

G‧‧‧windshield

P‧‧‧P polarized light

S‧‧‧S polarized light

〔this invention〕

1‧‧‧Developing device

11‧‧‧Projection device

12‧‧‧Development screen

2‧‧‧Rotating device

21‧‧‧ first half wave plate

22‧‧‧Power Module

23‧‧‧Toggle switch

24‧‧‧Signal switch

3‧‧‧windshield

31‧‧‧First glass

32‧‧‧second glass

4‧‧‧ second half wave plate

5‧‧‧ wiper

S‧‧‧S polarized light

P‧‧‧P polarized light

L‧‧‧ image light

The first figure is a schematic diagram of different incident angles and reflectances.

The second figure is a schematic diagram of an optical path using a half-wave plate with S-polarized light.

The third figure is a schematic diagram of an optical path using a half-span with P-polarized light.

The fourth figure is a schematic diagram of the optical path of the conventional raindrop attached to the windshield.

The fifth figure is a schematic diagram of the optical path of the present invention.

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

Figure 7 is a schematic view of a second embodiment of the present invention.

Figure 8 is another schematic view of a second embodiment of the present invention.

The ninth figure is a schematic view of an embodiment of the invention for manually controlling the rotation of the first half-wave plate.

The tenth figure is a schematic diagram of an embodiment of the present invention for automatically controlling the rotation of the first half-wave plate.

Referring to FIG. 5 , the adjustable full-time head-up display system of the present invention comprises: a developing device 1 including a projection device 11 and a developing screen 12; and a rotating device 2 including a first a half wave plate 21 and a power module 22, the first half wave plate 21 is disposed in front of the developing device 1, and the first half wave plate 21 is coupled to the power module 22, wherein the first half wave plate 21 is a transparent plastic material; a windshield 3, comprising a first glass 31 and a second glass 32, the image light L projected by the developing device 1 is reflected on the windshield 3; a second half wave plate 4, Between the first glass 31 and the second glass 32, the bottom surface of the second half-wave plate 4 is attached to the display area of the first glass 31, and then the second glass 32 is covered for defoaming and bonding. The second half wave plate 4 is made of a transparent plastic material.

As shown in the sixth figure, a schematic view of a first embodiment of the present invention, wherein the development screen 12 is a development screen with 45-degree linearly polarized light, and the first half-wave plate 21 is a fan type. The power module 22 is an electric motor; when the optical axis of the first half-wave plate 21 is rotated downward to 22.5 degrees, the 45-degree polarized light of the developing screen 12 is rotated 45 degrees clockwise (ie, 22.5 degrees x 2). ), reaching the horizontal direction into an S-polarized light (indicated by S in the figure); when the first half-wave plate 21 is rotated upward to 67.5 degrees, the 45-degree polarized light of the developing screen 12 is rotated 45 degrees counterclockwise. A P-polarized light is reached in the vertical direction (indicated by P in the figure).

As shown in the seventh figure, a schematic view of a second embodiment of the present invention, wherein the development screen 12 is a P-polarized development screen, and the first half-wave plate 21 is a fan-shaped sheet. The power module 22 is an electric motor. The optical axis of the first half-wave plate 21 is the same as the polarization direction of the development screen 12, and the angle is equal to zero, so the polarization direction is not changed; as shown in FIG. After half of the wave plate 21, the optical axis of the first half wave plate 21 is 45 degrees from the polarization direction of the development screen 12, and the polarization direction is rotated 90 degrees into S-polarized light. For the same principle, the developing device 1 includes The projection device 11 and the development screen 12, wherein the development screen 12 is an S-polarized development screen, and the development screen 12 can also be adapted to change the S-polarized light and the P-polarized light.

The above-mentioned first half-wave plate 21 can be controlled by a manual mode, wherein the rotating device 2 further includes a switch 23 (as shown in FIG. 9), and the power module 22 is controlled to rotate. The first half wave plate 21 is set to S-polarized light when the vehicle is started. When the driver wears polarized sunglasses and finds that the image display of the adjustable full-time head-up display system is not visible, pressing the changeover switch 23 will rotate the first Half of the wave plate 21 is switched to a P-polarized light output to solve the problem that the polarized sunglasses cannot see the image.

The above-mentioned first half-wave plate 21 can control the polarization of the polarized light in an automatic manner, wherein the rotating device 2 further includes a signal switch 24 (as shown in FIG. 10), and the signal switch 24 receives the wiper signal. The power module 22 is controlled to rotate the first half-wave plate 21 according to the action of the wiper 5, and the wiper 5 does not move to represent that there is no raindrop, and P-polarized light is used. When the wiper 5 starts to represent raindrops, the S-polarized light is used. In this way, according to the different weather outside the car, the control output is controlled to be S-polarized or P-polarized light. When the S-polarized light is normally turned on, it is not affected by the raindrops. When wearing polarized sunglasses, it is cut. When P is polarized, the displayed image will not be filtered by polarized sunglasses.

The feature of the adjustable full-time head-up display system of the present invention mainly comprises a developing device, a rotating device, a windshield and a second half-wave plate, wherein the rotating device comprises a first half-wave plate and a The power module can control the power module to rotate the first half wave plate by manual mode or automatic mode to generate back and forth interchange of S and P polarized lights, and select the output to be S polarized light or P polarized light. Effectively solve the problem that the polarized sunglasses can not read the displayed image and the image is distorted in the rainy day; therefore, the present invention can enable the driver to optimize the display image of the visual effect all the time according to the weather conditions, thereby achieving the improvement of driving safety. .

In summary, the adjustable full-time head-up display system of the present invention can solve the visual problem of the existing stored image, and the technical means used thereof are not in the prior art, so the novelty of the invention is unique and Progressive elements.

The specific embodiments of the present invention are provided to facilitate the description of the technical content of the present invention, and the present invention is not limited to the above embodiments, and the patent application without departing from the spirit of the present invention In the case of a range, various changes are made and still fall within the scope of the invention.

Claims (10)

 An adjustable full-time head-up display system comprising: a developing device; a rotating device comprising a first half-wave plate and a power module, the first half-wave plate being disposed in front of the developing device, the first The half wave plate is coupled to the power module; a windshield includes a first glass and a second glass, and the image light projected by the developing device is reflected by the windshield; and a second half wave plate is disposed Between the first glass and the second glass.    The adjustable full-time head-up display system of claim 1, wherein the first half-wave plate and the second half-wave plate are made of a transparent plastic material.    The adjustable full-time head-up display system of claim 1, wherein the rotating device further comprises a switch, the switch controlling the power module to rotate the first half-wave plate.    The adjustable full-time head-up display system of claim 1, wherein the rotating device further comprises a signal switch, the signal switch controlling the power module to rotate the first half-wave plate.    The adjustable full-time head-up display system of claim 1, wherein the developing device comprises a projection device and a developing screen, wherein the developing screen is a developing screen with 45-degree linearly polarized light.    The adjustable full-time head-up display system of claim 1, wherein the developing device comprises a projection device and a developing screen, wherein the developing screen is a P-polarized developing screen.    The adjustable full-time head-up display system of claim 1, wherein the developing device comprises a projection device and a developing screen, wherein the developing screen is an S-polarized developing screen.    The adjustable full-time head-up display system of claim 1, wherein the power module is an electric motor.    The adjustable full-time head-up display system of claim 1, wherein the first half-wave plate is a fan-shaped sheet.    The adjustable full-time head-up display system of claim 1, wherein the developing device comprises a projection device and a development screen.