TW201407192A - Head up display - Google Patents

Abstract

The present invention is related to a head up display, more particularly to a head up display that uses the technology of polarized light to present both a long range image and a short range image or one of them on the eyes of a driver. The head up display is applied in a car and comprises: a first image source, which is disposed under the windshield of the car, the first image source emits a first polarized image light with a first polarization; a light-combining component, which is in front of the first image source for that the first polarization firstly goes to the light-combining component after the first polarization is emitted by the first image source, the light-combining component only lets the first polarization go through, the first polarization then goes to the windshield, thus part of the first polarization is reflected by the windshield to the eyes of a driver; and a second image source, which is inside the car, the second image source emits a second polarized image light with a second polarization, the second polarized image light may directly go to or reflect at least one time to the light-combining component, the light-combining component thus reflects the second polarized image light to the windshield, and the second polarized image light are partially reflected by the windshield to the eyes I of the driver.

Description

Head up display device

The present invention relates to a head-up display device, and more particularly to a head-up display device that uses a polarized light technique to display two remote and close-range images simultaneously or both in a driver's eyes.

The various conditions encountered by cars on the road are changing rapidly. For example, if you are driving on a straight road in the country or on a road full of vehicles in the city, the conditions around the car are completely different. Moreover, depending on the time of day, such as day, evening and evening, because of the good or bad sight, there will be different ways of coping. More specifically, if you are driving fast on the straight road in the country, and the time is in the evening, you can know that the line of sight is not very good, but the speed should not be too slow. At this time, if there is an object suddenly appearing in front, the driver must first feel that there is an object in front, and then it is necessary to know what kind of object is necessary to carry out the necessary strain mode. For example, if you know that it is an animal, you must know more about which animal it is, large or small, and you can make the most appropriate measures after confirmation. However, such detection and confirmation devices are used to increase the safety of driving, and no related products have been found yet.

As shown in the fourth figure, a representation of a head-up display device of the Republic of China Patent Publication No. M332601 for a vehicle having at least one signal generating device 2A for providing at least one signal source, the head display Device 1A includes: a a human machine interface (HMI) 19A is electrically coupled to the signal generating device 2A for selecting the signal source, and an interface circuit 11A for receiving the signal source selected by the human interface 19A. Converting the signal source into an image signal; an imaging surface 17A is formed substantially on one of the windshields of the vehicle; and a projection unit 15A receives the image signal of the interface circuit 11A and converts the image signal into a The image is projected onto the imaging surface 17A, wherein the projection unit 15A further includes at least one lens, a digital micromirror device (DMD), and a lens (not shown) through which the image signal passes. A lens is projected onto the digital micromirror device, and the digital micromirror device forms the picture, and is projected onto the imaging surface 17A via the lens. Since the digital micro-mirror device receives the digital signal and projects the image in the form of a digital light pulse, the resolution is high, which is more favorable for the presentation of the projected image, and has the advantage of smaller size. Therefore, the application direction and the functional features of the prior art are significantly different from the present invention.

Please refer to FIG. 5, which is a schematic diagram of a head-up display device of US Patent Publication No. US7936518B2, comprising an infrared emitting unit 5B for emitting an infrared ray to a user D; and a mirror element 3B for reflecting toward a concave mirror 4B. A display 2B emits one of the visible light L, and transmits the infrared light reflected by the user D and the concave mirror 4B; the plurality of imaging units 6B, 7B face the concave mirror 4B to sense infrared rays, and each image is From a different direction; and an image processing unit 8B calculates an eye position of the user based on an image captured by the plurality of imaging units 6B, 7B. Therefore, in terms of functionality, US Patent Publication No. US8035879B2 uses infrared and visible light to project on the windshield glass. One step is reflected to the user's eyes, which in turn allows the image processing unit to obtain the condition and position of the eye. Therefore, the prior art is applied to capture the position of the eyes, in order to prevent the driver from dozing off while driving, and affecting driving safety. Therefore, the application direction and the functional features of the prior art are significantly different from the present invention.

As mentioned above, there is no such thing as a head-up display device on the market that can display two kinds of images at the same time, so that the vehicle can display external conditions under various different demand states when driving, so that the driver can be fully alerted to perform the operation at any time. Strain measures. Therefore, how to design the above-mentioned head-up display device will be an important subject for those familiar with the art.

The advantages and spirit of the present invention will be further understood from the following detailed description of the invention.

The main object of the present invention is to provide a head-up display device for simultaneously displaying two image display modes of distance and close range for special display or warning purposes.

Another object of the present invention is to provide a head-up display device, which can select an image display mode according to requirements, so that when the driver thinks that the near-distance and long-distance images are too tired to monitor at the same time, he can choose to only turn on the distance or Close display mode.

A head-up display device is used in a car, comprising: a first image source disposed under one of the windshields of the car, the first image source being capable of emitting one of the first polarities a polarized image light; a light combining component disposed in front of the first image source to emit light from the first image in the first polarized image When the source is emitted, it will first come to the light combining component, and the light combining component only passes the first polarized image light, so when the first polarized image light P passes, it will go to the windshield. Then, through partial reflection of the windshield, it enters into one of the driver's eyes; and a second image source is disposed inside the automobile, and the second image source can emit one of the second polarity The second polarized image light, and when the second polarized image light is emitted from the second image source, directly or after at least one reflection to the light combining element, and then reflected by the light combining element The windshield, which is partially reflected by the windshield, enters into the driver's two eyes, and the first polarized image light also enters the driver's two eyes due to the second polarized image light. After at least two reflections, a second optical path that the second image source passes to the driver's two eyes is longer than a first optical path that the first image source passes to the driver's two eyes.

A head-up display device is used in a car, comprising: a first image source disposed under one of the windshields of the car, the first image source being capable of emitting one of the first polarities a polarized image light; a light combining element having a penetrating mode and a mirror mode, and disposed in front of the first image source to emit light from the first image source in the first polarized image light When the light combining element is in the penetrating mode, the light combining element only passes the first polarized image light, so when the first polarized image light passes After that, it will go to the windshield, and then through the partial reflection of the windshield, it will enter the driver's two eyes. At this time, the driver only sees the first image source on the windshield. a virtual image; and a second image source disposed inside the car, the second image source Transducing a second polarized image light having a second polarity, and when the second polarized image light is emitted from the second image source, directly or after at least one reflection to the light combining element When the light combining component is in the mirror mode, the light combining component reflects the second polarized image light to the windshield, and then partially reflects through the windshield, and enters the driver's two eyes. The first optical path passes through the second polarized image light through at least two reflections, and the second optical path passed by the second image source to the driver's two eyes is the first one passed by the first image source to the driver's two eyes. The optical path is long, so the driver sees that the first virtual image of one of the first polarized image rays is closer to the second virtual image of one of the second polarized image rays.

Please refer to the first figure, which is a schematic diagram of a first preferred embodiment of a head-up display device of the present invention. As shown in the figure, the head-up display device 1 is used in a car, and includes: a first image source 11 disposed under a windshield glass A of the car, and the first image source 11 can be emitted. a first polarized image light P having a first polarity (p pole); a light combining element 12 disposed in front of the first image source 11 to be in the first polarized image light P When an image source 11 is emitted, it will first come to the light combining element 12, and the light combining element 12 is a reflective polarizing plate, so that only the first polarized image light P passes, so when the first polarized pole After passing through the windshield A, it will reach the point A11 on the inner surface A1 of one of the windshield A, and then partially reflect through the windshield A, and will enter the second of a driver. The eye I; and a second image source 13 are disposed inside the automobile, this embodiment Is disposed at the top of the windshield A, the second image source 13 can emit a second polarized image light S having a second polarity (s pole), and when the second polarized image light After being emitted from the second image source 13, the S is directly (or at least once reflected) to a point 1211 on the outer surface 121 of one of the light combining elements 12, and then reflected by the light combining element 12 to the windshield A. The point A11 on the inner surface A1 is further reflected by the portion of the windshield A, and enters the two eyes I of the driver. Thus, the first polarized image light P is also added to the In the driver's two eyes I, the driver sees two images, and between the point A11 and the eye I belongs to a combined light path, that is, the first polarized image light P and the second polarized image light. The overlapping portion of S, however, because the second polarized image light S passes at least two reflections, a second optical path from the second image source 13 to the driver's two eyes I passes the first image source 11 to the driver The first light path that the two eyes I pass is long, so the driver sees the first polarized image light. One of the first virtual images 111 of P is closer to the second virtual image 131 of the second polarized image light S. Since the windshield A is transparent, the first virtual image 111 may be present under partial reflection. And the presentation of the second virtual image 131.

Please refer to the second drawing, which is a first partial schematic view of one of the second preferred embodiments of the head-up display device of the present invention. As shown in the second figure, a head-up display device 1' is used in a car, comprising: a first image source 11' disposed below a windshield A' of the car, the first image The source 11' can emit a first polarized image light P having a first polarity (p pole); a light combining element 12' having a penetrating mode and a mirror mode, and is disposed at the An image source 11' in front of the When a polarized image light P is emitted from the first image source 11', it will first come to the light combining element 12'. When the light combining element 12' is in the penetrating mode, the light combining element 12' only Letting the first polarized image light P pass, when the first polarized image light P passes, it will go to the windshield A' to reach a point on the inner surface A1' of one of the windshield A' After A11', it will be reflected to the second eye I of a driver through the partial reflection of the windshield A'. At this time, the driver only sees the first image source 11' on the windshield A'. a virtual image 111'; and a second image source 13', as shown in the third figure, is a second partial schematic view of the second preferred embodiment of the head-up display device of the present invention, which is disposed inside the automobile The embodiment is disposed at the top of the windshield A', and the second image source 13' emits a second polarized image light S having a second polarity (s pole), and when the first After the second polarized image light S is emitted from the second image source 13', it is directly (or at least once reflected) to the light combining element 12' One point 1211' on the outer surface 121', when the light combining element 12 is in the mirror mode, the light combining element 12 reflects the second polarized image light S to the inner surface A1' of the windshield A' The point A11' is reflected by the part of the windshield A and enters the two eyes I of the driver. At this time, the driver only sees the second image source 13' on the windshield A'. a second virtual image 131', because the second polarized image light S passes at least two reflections, a second optical path passed by the second image source 13' to the driver's two eyes I is closer to the first image source 11' The first optical path that the driver's two eyes I pass is long. Therefore, in the second embodiment, the first virtual image 111' of the single first polarized image light P that the driver sees at a time is The second virtual image 131' of the single second polarized image light S is near.

As described above, in the first preferred embodiment, the driver can simultaneously see a distant image and a near image at the same time, so that the first image source 11 and the second image source 13 must be simultaneously turned on. In the second preferred embodiment, the driver only needs to see a far or near image outside the vehicle as needed, so that the first image source 11 and the second image source 13 need only be turned on at the same time. can.

From the above, it can be understood that the present invention provides the following advantages:

1. The long-range and close-range modes can be combined for special display or warning purposes, such as driving in the evening or at night, the distance image shows the presence of moving objects or stationary objects, but it is impossible to judge because of poor line of sight. What kind of moving object or size, at this time, there is a close-up image showing the details of the moving object or the stationary object, so that the driver knows how to further process. If it is a rabbit, you can change lanes or slow down slightly; if it is a big deer, you may have to go through the parking procedure quickly.

2. The head-up display mode of long distance or close range can be selected according to driving conditions. For example, if a car is driving in an urban area, it can only turn on the near-distance display mode because it is not fast; if it is in an open space, and the driver thinks that it is not necessary to monitor the near and far-distance images at the same time, you can choose to only turn on the remote distance. Display mode. In this way, when there is a moving object or a stationary object in the remote display mode, it is immediately ready to be strained.

Thus, the patent application of the present invention utilizes the inventor's rich experience to design a simple but fully problematic solution to the conventional technology with a very creative concept. Therefore, the function of the patent application of the present invention does meet the patent requirements of novelty and progress.

The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto. It is to be understood that the scope of the present invention is not limited by the spirit and scope of the present invention, and should be considered as a further embodiment of the present invention.

2A‧‧‧Signal generating device

1A‧‧‧Heading display device

19A‧‧‧Human Machine Interface

11A‧‧‧Interface circuit

17A‧‧‧ imaging surface

15A‧‧‧Projection unit

5B‧‧‧Infrared emitting unit

D‧‧‧Users

3B‧‧‧Mirror components

4B‧‧‧ concave mirror

2B‧‧‧ display

L‧‧‧ visible light

6B, 7B‧‧‧ imaging unit

8B‧‧‧Image Processing Unit

1‧‧‧Heading display device

11‧‧‧ First image source

A‧‧‧windshield

P‧‧‧Polarized image light

12‧‧‧Combined components

A1‧‧‧ inside

A11‧‧ points

I‧‧‧ eyes

13‧‧‧Second image source

S‧‧‧Second polarized image light

121‧‧‧ outside

1211‧‧ points

111‧‧‧The first virtual image

131‧‧‧Second virtual image

1'‧‧‧Heading display device

11’‧‧‧First image source

A’‧‧‧ windshield

12'‧‧‧Combined components

Inside A1’‧‧‧

A11’‧‧‧ points

111’‧‧‧The first virtual image

13’‧‧‧Second image source

121’‧‧‧ outside

1211’‧‧ points

131’‧‧‧Second virtual image

1 is a schematic view of a first preferred embodiment of a head-up display device of the present invention; and FIG. 2 is a first portion of a second preferred embodiment of a head-up display device of the present invention; Figure 2 is a schematic view showing a second part of the second preferred embodiment of the head-up display device of the present invention; the fourth picture is a representative drawing of a head-up display device of the Republic of China Patent Publication No. M332601; and the fifth figure is the United States One of the patent display bulletin US7936518B2 heads up display device representation.

1‧‧‧Heading display device

11‧‧‧ First image source

A‧‧‧windshield

P‧‧‧Polarized image light

12‧‧‧Combined components

A1‧‧‧ inside

A11‧‧ points

I‧‧‧ eyes

13‧‧‧Second image source

S‧‧‧Second polarized image light

121‧‧‧ outside

1211‧‧ points

111‧‧‧The first virtual image

131‧‧‧Second virtual image

Claims (8)

A head-up display device is used in a car, comprising: a first image source disposed under one of the windshields of the car, the first image source being capable of emitting one of the first polarities a polarized image light; a light combining component disposed in front of the first image source to first come to the light combining component when the first polarized image light is emitted from the first image source The light element only passes the first polarized image light, so when the first polarized image light passes, it will go to the windshield, and then through the partial reflection of the windshield, it will enter a driver's And a second image source disposed inside the automobile, the second image source emitting a second polarized image light having a second polarity, and when the second polarized image After the light is emitted from the second image source, it will be directly or after at least one reflection to the light combining element, and then reflected by the light combining element to the windshield, and then partially reflected by the windshield, and then enters the light source. In the driver’s two eyes, The first polarized image light also enters the driver's two eyes, because the second polarized image light passes through at least two reflections, and the second image source passes through a second optical path that the driver's two eyes pass through. A first optical path through which an image source passes to the driver's two eyes is long. The head-up display device of claim 1, wherein the light-collecting element is a reflective polarizer. The head-up display device of claim 1, wherein the first polarity of the first polarized image light is one pole. The head-up display device of claim 1, wherein the second polarity of the second polarized image light is one pole. A head-up display device is used in a car, comprising: a first image source disposed under one of the windshields of the car, the first image source being capable of emitting one of the first polarities a polarized image light; a light combining element having a penetrating mode and a mirror mode, and disposed in front of the first image source to emit light from the first image source in the first polarized image light When the light combining element is in the penetrating mode, the light combining element only passes the first polarized image light, so when the first polarized image light passes After that, it will go to the windshield, and then through the partial reflection of the windshield, it will enter the driver's two eyes. At this time, the driver only sees the first image source on the windshield. a virtual image; and a second image source disposed inside the automobile, the second image source emitting a second polarized image light having a second polarity, and when the second polarized image light is self- After the second image source is sent, it will go directly or through at least one The reflection is directed to the light combining element. When the light combining element is in the mirror mode, the light combining element reflects the second polarized image light to the windshield, and then reflects through the part of the windshield, and then enters The driver’s two eyes, due to The second polarized image light is reflected by at least two times, and a second optical path that the second image source passes to the driver's two eyes is longer than a first optical path that the first image source passes to the driver's two eyes. Therefore, the driver sees that the first virtual image of one of the first polarized image rays is closer to the second virtual image of one of the second polarized image rays. The head-up display device of claim 5, wherein the light-combining element is a switchable specular reflection element. The head-up display device of claim 5, wherein the first polarity of the first polarized image light is one pole. The head-up display device of claim 5, wherein the second polarity of the second polarized image light is one pole.