2.2 DLP技术在高分辨率前照灯应用中的优势

In this TI DLP Labs video, we will

describe some key advantages of using DLP technology

for high-resolution headlight applications

and describe some typical use cases.

DLP technology enables incredibly high-resolution

headlight modules.

The automotive-qualified DLP5531-Q1 DMD,

or Digital Micromirror Device, has over 1 million pixels.

And there's no sacrifice to style

when the final lens height of a DLP5531-Q1 headlight module

can remain under 40 millimeters.

A headlight module that uses DLP technology

can be designed with LED or laser illumination.

DLP technology has been proven over 20 years in markets

such as cinema and enterprise projection,

and now it's automotive-qualified

and in production vehicles today.

What can a headlight do with 1 million pixels?

One application is Adaptive Driving Beam, or ADB.

ADB allows the high beam to remain on continuously

while shaping light around oncoming traffic.

DLP technology's high-resolution allows

precise illumination control, put light

exactly where it is needed so more of the high beam

can remain on at all times without blinding oncoming

traffic or pedestrians.

More light can show drivers and ADAS systems everything

in view, giving them more time to react to changes if needed.

High resolution can also create smooth, gradient transitions

in the light shape to avoid rapid, jerking motion of light

that can be seen in low-resolution ADB options.

Use the full programmability of high-resolution headlights

to reinvent how vehicles and drivers see at night.

Highly reflective road signs can glare drivers and oversaturate

camera sensors.

With high-resolution DLP technology,

the headlight can dim or turn off

pixels to avoid glare for the driver or camera

while highlighting pedestrians, cyclists,

and obstacles to give the driver and ADAS systems time to react.

And ADB is only the beginning of what

a high-resolution headlight can do.

Any custom content can be displayed on the road.

This enables a new communication channel between the vehicle

and the driver.

Here, the headlights are used to project lines indicating

a vehicle path and to show the vehicle width as it traverses

a narrow construction zone.

Lane marking can give drivers and also other cars

more confidence to safely navigate through hazards

by communicating intent.

Only the highest resolution makes symbol projection

possible.

Symbol projection enables welcome messages

to the driver, differentiated branding, navigation, warnings,

and other vehicle-to-everything, or V2X, communication

to be conveyed on the road.

Here, an arrow and distance are projected onto the road

to indicate where a turn is located.

But how many pixels does a headlight really need

to perform these functions?

To answer that, let's look at the navigation symbol

that was projected on the previous slide.

We can assume the headlight is mounted in the vehicle

approximately 60 centimeters above the road.

The symbol is 2 meters long and projected

at a distance of 10 meters.

Because of the steep angle that this symbol is projected

on the ground, it actually fills less than 1 degree

of the headlights' entire field of view.

These images show the flattened image

from the headlights' perspective.

In a typical design, the DLP5531-Q1 DMD

is able to use 50 to 100 lines of pixels

to display this symbol due to its high pixels per degree,

depending on the optical design.

Other so-called high-resolution headlight technologies

struggle with too few pixels for this level of detail.

Click the links on this slide or immediately below this video

to learn more about DLP technology

in high-resolution headlights.

Our white paper, Trends in High-Resolution Headlamps,

provides more detail on headlight field

of view and resolution.

For more information, visit TI.com/DLP.

Thanks for watching.

In this TI DLP Labs video, we will

describe some key advantages of using DLP technology

for high-resolution headlight applications

and describe some typical use cases.

DLP technology enables incredibly high-resolution

headlight modules.

The automotive-qualified DLP5531-Q1 DMD,

or Digital Micromirror Device, has over 1 million pixels.

And there's no sacrifice to style

when the final lens height of a DLP5531-Q1 headlight module

can remain under 40 millimeters.

A headlight module that uses DLP technology

can be designed with LED or laser illumination.

DLP technology has been proven over 20 years in markets

such as cinema and enterprise projection,

and now it's automotive-qualified

and in production vehicles today.

What can a headlight do with 1 million pixels?

One application is Adaptive Driving Beam, or ADB.

ADB allows the high beam to remain on continuously

while shaping light around oncoming traffic.

DLP technology's high-resolution allows

precise illumination control, put light

exactly where it is needed so more of the high beam

can remain on at all times without blinding oncoming

traffic or pedestrians.

More light can show drivers and ADAS systems everything

in view, giving them more time to react to changes if needed.

High resolution can also create smooth, gradient transitions

in the light shape to avoid rapid, jerking motion of light

that can be seen in low-resolution ADB options.

Use the full programmability of high-resolution headlights

to reinvent how vehicles and drivers see at night.

Highly reflective road signs can glare drivers and oversaturate

camera sensors.

With high-resolution DLP technology,

the headlight can dim or turn off

pixels to avoid glare for the driver or camera

while highlighting pedestrians, cyclists,

and obstacles to give the driver and ADAS systems time to react.

And ADB is only the beginning of what

a high-resolution headlight can do.

Any custom content can be displayed on the road.

This enables a new communication channel between the vehicle

and the driver.

Here, the headlights are used to project lines indicating

a vehicle path and to show the vehicle width as it traverses

a narrow construction zone.

Lane marking can give drivers and also other cars

more confidence to safely navigate through hazards

by communicating intent.

Only the highest resolution makes symbol projection

possible.

Symbol projection enables welcome messages

to the driver, differentiated branding, navigation, warnings,

and other vehicle-to-everything, or V2X, communication

to be conveyed on the road.

Here, an arrow and distance are projected onto the road

to indicate where a turn is located.

But how many pixels does a headlight really need

to perform these functions?

To answer that, let's look at the navigation symbol

that was projected on the previous slide.

We can assume the headlight is mounted in the vehicle

approximately 60 centimeters above the road.

The symbol is 2 meters long and projected

at a distance of 10 meters.

Because of the steep angle that this symbol is projected

on the ground, it actually fills less than 1 degree

of the headlights' entire field of view.

These images show the flattened image

from the headlights' perspective.

In a typical design, the DLP5531-Q1 DMD

is able to use 50 to 100 lines of pixels

to display this symbol due to its high pixels per degree,

depending on the optical design.

Other so-called high-resolution headlight technologies

struggle with too few pixels for this level of detail.

Click the links on this slide or immediately below this video

to learn more about DLP technology

in high-resolution headlights.

Our white paper, Trends in High-Resolution Headlamps,

provides more detail on headlight field

of view and resolution.

For more information, visit TI.com/DLP.

Thanks for watching.