Is HUD just a gimmick? Or futuristic tech? HUD introduction is here!

Is HUD just a gimmick? Or futuristic tech? HUD introduction is here!

HUD (Head Up Display) introduction

You may not be a pilot, but at least you have a great opportunity to use the pilot's technology-HUD (Head Up Display).

HUD (Head Up Display) is the futuristic tech applied from fighter jets to cars, from the cockpit of fighter jets to the cab of cars. So far, HUD (Head Up Display) is no longer the exclusive enjoyment of pilots, but has become a car electronics. One of the development products, there are also some automotive electronics companies that survive with HUD as their main product.

The development of front-end automotive electronics mostly started from high-end cars. With technological breakthroughs and cost reductions, it gradually spread to more basic cars. HUD (Head Up Display) is also inseparable from this traditional development route. HUD (Head Up Display) has just become automotive electronics and introduced into cars. It is an exclusive equipment for luxury cars. After several years of development, it has slowly Expanded down, it is expected to be as popular as Dash Cam for automotive electronic products. In response to the introduction of a new category of HUD, such a development route has been continuously circulating again.

Briefly describe the origin of HUD (Head Up Display), and then explain what HUD is. HUD (Head Up Display) uses the principle of optical reflection to project important driving-related information on the windshield and reflect it in a balanced manner. In the eyes of the driver, the intuitive function of HUD (Head Up Display) is to make the driver no longer need to look down at the dashboard and navigation. It projects relevant driving information data onto the front windshield of the car by projection. Related driving information data may include driving speed, battery voltage, water tank temperature, engine speed, car fuel consumption, navigation route... etc.

The basic technical principle of HUD (Head Up Display) does not sound difficult. The cool effect after operation often surprises people. Therefore, it has become a product that automobile manufacturers gradually pay attention to.

As for whether the technical difficulty of HUD (Head Up Display) is as simple as imagined, it is just a gimmick, or futuristic tech, we can start with the development of HUD (Head Up Display).


HUD (Head Up Display) development

Windshield Reflective HUD

The earliest HUD (Head Up Display) was a reflective HUD, which directly reflected relevant driving information on the windshield. Because of the needs of brightness and clarity, the use of this reflective HUD requires a transparent sticker on the windshield. This type of HUD (Head Up Display) has the lowest technical level and low cost. It only reflects the light source to the windshield by the light-emitting diode. This is an advantage. This type of HUD (Head Up Display) is most common in AM (Aftermarket); The disadvantage is that the display range of the image is limited, the function is single, and the transparent black film will also interfere with the driving vision, and it is easy for others to see the reflected information.


Combiner Type HUD

Combiner Type HUD, this HUD (Head Up Display) sets up a dedicated display screen between the windshield and the driving, and uses this display screen as a dedicated display virtual imaging. Compared with the Windshield Reflection Type HUD, the Combiner Type HUD is The projected driving information can only be seen from the angle of the driver’s seat. This type of HUD (Head Up Display) can be seen in OE (Original Equipment) and AM (Aftermarket). The main difference lies in the Combiner mounted on OE (Original Equipment) The Type HUD display screen can be raised electrically when activated, and the Combiner Type HUD of AM (Aftermarket) needs to be stuck between the windshield and the driving, and cannot be integrated with the surrounding car electronics to achieve the ability to answer calls and messages. Function, the display screen needs to be adjusted manually, the coolness is not as cool as the Combiner Type HUD of OE (Original Equipment).
(UniMax’s Combiner Type HUD)


Windshield Type HUD

Windshield Type HUD, also known as WHUD, this type of HUD (Head Up Display) is quite different from the first two types of HUD (Head Up Display) because it is buried in the internal space in front of the dashboard, To the body of the HUD (Head Up Display), at the same time, the projection distance is farther than the Windshield Reflection Type HUD and Combiner Type HUD. It can be projected several meters in front of the driver, which perfectly combines the sight of the car. The biggest advantage of this feature is that it can bring higher driving safety, because the distance between the HUD (Head Up Display) imaging and the driving visual road conditions is too far, when the driver is watching the HUD (Head Up Display), the eyes need to zoom, At this time, the road conditions will be blurred, causing a situation similar to blind driving.

The Windshield Type HUD is directly imaged through the windshield. It does not require the Windshield Reflection Type HUD film and the exclusive display screen of the Combiner Type HUD. However, because of the imaging principle, it is directly applied to the general windshield, which will produce overlapping images and cause poor use. Therefore, a car equipped with Windshield Type HUD needs to replace the windshield with a wedge-shaped glass. The wedge-shaped glass is characterized by a special film in the middle of the glass, which can solve the problem of overlapping images. The disadvantage is that the overall cost is expensive. Symbolic. Windshield Type HUD is mostly installed in OE (Original Equipment) due to the requirements of installation and wedge glass. AM (Aftermarket) Windshield Type HUD is very rare and inconvenient to install. The user experience is also very bad because of overlapping images.

(UniMax’s Windshield Type HUD)



AR HUD is similar to Windshield Type HUD. It is buried in the internal space in front of the instrument panel and requires wedge-shaped glass. However, compared to Windshield Type HUD, it provides a wider projection image and a longer projection distance for driving. The main impact of the projection distance is mentioned in the introduction of Windshield Type HUD, which can increase the safety of driving and match the sight of the car; the wide projection image can bring more applications, in addition to projecting driving speed, battery voltage, water tank temperature, and engine In addition to the main driving information for speed and fuel consumption, it can also achieve precise navigation, warning prompts, and precise matching of the real world environment.The overall function is more powerful than Windshield Type HUD, and the technological effect is more cool. The disadvantage is that in addition to higher technical requirements, because the AR HUD requires a wide projection image, it needs to be equipped with a large-size panel, which makes the AR HUD bulky. As a result, not all cars have enough space to provide the AR HUD buried in The interior space in front of the dashboard usually requires special design for the configuration of automotive parts, which is a common technical problem with AR HUD.


Flat type AR HUD

Flat type AR HUD, a new generation of HUD (Head Up Display), buried in the internal space in front of the dashboard, has a wide projection image and long-distance projection distance. It can be said that it inherits the characteristics of AR HUD, but has AR HUD While it has advantages, it also solves the common technical problems of AR HUD. When introducing AR HUD, it was mentioned that because the wide projection image needs to be equipped with a large-size panel, it also makes the AR HUD form a huge volume, and the import threshold is increased, but Flat Type AR HUD introduces advanced MAVE technology, so that the external light path can be imaged by penetration and reflection, such as blinds, and can project wide images without a large panel. The volume can be reduced by at least 30% compared with AR HUD, and it can be easily imported Most vehicles; at the same time, AR HUD and Windshield Type HUD need to use wedge-shaped glass, and the overall cost of introduction is expensive. However, because of the optical path design, Flat type AR HUD does not need to use wedge-shaped glass, making it easier to popularize in the automotive electronics market. The disadvantage is that the technology is difficult, and automotive electronics manufacturers with this technical capability are very rare. UniMax's Flat type AR HUD has a brightness efficiency of 8-30 times higher than that of other brands. It has both mass production and technical capabilities, leading the world.

The above introduction can be seen that the same is HUD (Head Up Display), because of the different types, the required technical capabilities are also very different.
(UniMax's Flat type AR HUD, small size, low power consumption, no need to use wedge glass)


The role of HUD

UniMax believes that HUD (Head Up Display) creates several functions for driving on the road:
1. Real-time navigation information: It can mark several main navigation information such as turn reminders and road names. This technology is also called TURN BY TURN.
2. Excellent driving experience and safety: In the driving state, if the driving is distracted, looking down at the dashboard and navigation, and creating a blind driving distance of several meters, if it is high-speed, it will be a blind driving of tens of meters, which is dangerous Greatly improved, HUD (Head Up Display) can help drivers collect important driving information without lowering their heads, which has improved a lot of safety.
3. Answer incoming calls and messages: After HUD (Head Up Display) streams the surrounding car electronics, you can answer and hang up incoming calls and messages from your mobile phone by means of control, gesture, and voice.
4. The status symbol of the trendy person in technology: Compared with the Dash Cam, the car is equipped with a HUD (Head Up Display), which is obviously more able to set off the status of the trendy person who is at the forefront of technology.

There are irreplaceable features in the automotive electronic products that perform their duties. UniMax is also optimistic that HUD will become a popular automotive electronic product.
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