
English: 
This TI DLP Labs video
will cover the advantages
of DLP technology in augmented
reality head-up displays.
Before we discuss the
advantages of DLP technology
in an augmented reality head-up
display or AR HUD, let's
first define what we mean
by augmented reality.
In an augmented
reality hood, graphics
are projected into the
driver's field of view,
interacting with and
marking real-world objects.
Critical information, such
as advanced driver assistance
systems, or ADAS alerts,
and navigational cues
are overlaid onto
the real world.
Graphics are
calculated real-time
based on vehicle sensor
data, and projected directly
in the driver's line of sight,
improving situational awareness
and keeping the driver's
eyes on the road.
DLP technology is bright
and power-efficient.
For example, a 75
lumen projector
consumes only 8.5 watts
of electrical power

Chinese: 
本次 TI DLP 实验室
视频将介绍
增强现实抬头显示中
DLP 技术的优势。
在介绍增强现实
抬头显示（或 AR HUD）中
DLP 技术的优势
之前，我们先来
了解一下
增强现实的定义。
在增强现实
头戴设备中，
图形投射到
司机的视场内，
与真实世界的物体
进行交互并予以标记。
高级驾驶辅助系统
(ADAS) 警报以及
导航提示等关键信息
均会叠加在
真实世界中。
图形是根据
汽车传感器数据
实时计算得出的，
并直接投射在
司机的视线范围内，
既提高了环境感知能力，
又能让司机始终
将注意力放在路面上。
DLP 技术兼具
高亮度和低功耗。
例如，一个 75
流明的投射仪，
由 LED 供电时
仅消耗 8.5 瓦电能，

Chinese: 
其耗电量低于
同类竞争技术的
一半。
DLP 技术可在
汽车的工作温度范围内
保持颜色、
对比度和亮度
一致。
太阳能负载
性能出色，支持
20 米或以上的
虚拟图像距离。
得益于高分辨率、
高光学效率以及
高切换速度，
DLP 技术可提供
清晰、明亮
和鲜艳的 HUD
影像，而且
色彩饱和度高。
最后，DLP 技术
支持新一代
增强现实
抬头显示解决方案，
如波导和全息薄膜。
DLP 技术的核心是
数字微镜器件 (DMD)。
DMD 是光学 MEMS
器件，包含成千上万个
独立、快速转换
且高度反射的
铝镜。

English: 
when powered by LEDs, which
is less than half the power
of competing technologies.
DLP technology delivers
constant color, contrast,
and brightness over the
automotive operating
temperature range.
Solar load performance is
excellent, supporting virtual
image distances of
20 meters or more.
DLP technology benefits
from high resolution,
high optical
efficiency, and fast
switching speed, which results
in crisp, bright, vivid HUD
imagery, with highly
saturated colors.
And finally, DLP
technology supports
next-generation augmented
reality head-up display
solutions, such as waveguides
and holographic films.
At the heart of DLP technology
is the digital [? micro ?]
mirror device, or DMD.
The DMD is an optical MEMS
device consisting of thousands
to millions of individual,
fast-switching, highly
reflective aluminum mirrors.

English: 
The physical characteristics
and switching performance
of the mirrors do not
[? de-rate ?] over temperature,
ensuring constant color,
contrast, and brightness.
The DMD mirrors reflect both LED
and laser light equally well,
supporting LED or laser
illumination light sources.
In addition to constant
performance over temperature
and support for all currently
available light sources,
the DMD mirrors provide
several other advantages.
Color saturation is not affected
by the reflection of light
off the DMD mirrors.
The illuminating light source
defines the color saturation
levels.
And as a result, DLP technology
delivers bright, vivid, highly
saturated colors, achieving up
to 125% NTSC when using LEDs,
and up to 172% NTSC
when using lasers.
Another nice feature
of DLP technology
is that when wearing
polarized sunglasses,
HUD images are still visible.

Chinese: 
铝镜的物理特性
和转换性能
不会随着温度的
变化而降低，
能确保颜色、对比度
和亮度一致。
DMD 镜片对 LED 和激光
具有同样出色的反射效果，
因此支持 LED
或激光照明光源。
除了性能不随
温度变化和支持
当前的所有
可用光源外，
DMD 镜片还具有
其他几项优势。
色彩饱和度
不受 DMD 镜片
反射光线的影响。
照明光源
决定色彩饱和度
水平。
因此，DLP 技术可提供
明亮、鲜艳和高度饱和的色彩，
使用 LED 可实现
高达 125% 的 NTSC 色域，
使用激光可实现
高达 172% 的 NTSC 色域。
DLP 技术的
另一个出色特性
是在佩戴
偏光太阳镜时，
HUD 图像仍可见。

Chinese: 
DMD 镜片能反射
可见光谱的
P 和 S 偏振光。
因此无需
偏振滤光器。
AR HUD 的一个
差异化特性
是支持较长的
虚拟图像距离。
由于 HUD 光学系统
具有放大作用，
因此，虚拟图像距离
越长，聚集的阳光
就越多。
在基于 TFT 的系统中，
阳光聚焦在
吸收性高的 TFT
面板上，
导致温度显著上升
和潜在的损害。
而在基于 DLP
技术的 HUD 中，
阳光聚焦在
半透明的散射屏上，
然后在这里
散焦和传输，
从而产生
很小的温升。
选择一种
成像技术时，
需要重点
考虑的一点是
这项技术不仅能
满足当前要求，
还能满足
未来的要求。
新一代
AR HUD 将需要

English: 
The DMD mirrors reflect both
the P and S polarized portions
of the visible spectrum.
There is no polarization
filter required.
A key differentiating
feature of an AR HUD
is support for a long
virtual image distance.
The longer the virtual
image distance, the greater
the concentration of sunlight,
due to the magnification
of the HUD optics.
In a TFT-based
system, sunlight is
focused onto a
highly absorptive TFT
panel, resulting in
significant temperature
rise and potential damage.
In a DLP technology-based
HUD, sunlight
is focused onto a
semi-transparent diffuser
screen, where the light is then
de-focused and transmitted,
resulting in minimal
temperature rise.
When selecting an
imaging technology,
one of the key
care-abouts should
be the ability of the
technology to not only meet
today's requirements, but
also meet future requirements.
Next-generation
AR HUDs will need

English: 
to support wider fields of view,
longer virtual image distances,
and take up significantly
less space in the dash.
These objectives can be
achieved with technologies
such as waveguides
and/or holographic films,
both of which require
direct laser light sources.
DLP technology's support for
laser light sources, combined
with its high efficiency
and high resolution
make it an optimal
imager technology
choice for these next-generation
AR HUD technologies.
For more information on
DLP automotive technology,
please visit TI.com/DLP.
Thanks for watching.

Chinese: 
支持更宽的视场、
更长的虚拟图像距离，
并显著减小
在零件中的占用空间。
这些目标可
通过波导和/或
全息薄膜等
技术来实现，
两者均需
直接的激光光源。
DLP 技术的
激光光源支持，
加之高效率和
高分辨率特性，
使其成为新一代
AR HUD 技术的
理想成像技术。
有关 DLP
汽车技术的更多信息，
请访问 TI.com/DLP。
