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DLP5531LEQ1EVM: adaptive light

6003006
Prodigy 60 points
Part Number: DLP5531LEQ1EVM
Other Parts Discussed in Thread: DLPC230-Q1, DLP5531-Q1, DLP-OMM-SEARCH

Hi TI team,

I'm Yongxin Wang, from George Mason University. Our lab is looking to buy several products of the exact idea "adaptive light for automotive" which provides the freedom of on/off switch for mega-pixel lighting.

How is this module compatible with LED illumination, especially with car lights or other lights that can work as car lights?

For example,

1. how to place the LED light and the evaluation module? Is some kind of enclosing box needed?

2. given that the module looks quite small, is it only suitable for evaluation or it is actually work for the "adaptive car light" application.

3. Also, what is the field of view of the product?

Thank you for your time!

-Yongxin

Ph.D. In Computer Science

George Mason University

  • 0
    TI__Mastermind 27780 points

    Hi Yongxin,

    Please pardon the delay, the U.S. teams are now returning from holiday.

    Responding to your questions:

    1. The DLP5531LEQ1EVM is already fully assembled to emulate a headlight module, so you do not need to manually insert/position the LED. Per the user's guide instructions, you will only need to connect the cable harnesses between the formatter board, LED driver board, LED module, and power supply. This is a plug-and-play style EVM that allows you to quickly connect a micro-HDMI cable from the formatter board to your PC, and send images/video through your PC using the DLPC230 Control Program GUI.

    2. This EVM is a production-ready optical module from Sekonix, so you can use this EVM's components in a real-world adaptive car light application.

    3.The field of view is 14 x 7 degrees (horizontal x vertical).

  • 0 in reply to Akeem Whitehead
    Prodigy 60 points

    Hi TI team,

    Thank yo for the response. Happy Holiday!

    I'm still reluctant on making a decision mainly because there is no real world demo available online to resolve my concern about how well it would work as adaptive driving beam. Is there a picture or video showing the real life or experimental use the evaluation module in any form? For example, I would like to see what the final light looks like, how strong the light is and how dense it is when it shine upon the road or some other object. If you could help on mitigating any of my concern, that would be really appreciated.

    -Yongxin

  • 0 in reply to Akeem Whitehead
    Prodigy 60 points

    Hi Akeem,

    Thank you for the resources. These videos are good supplementary materials for the demo of matrix headlights and their application.

    Will DLP5531LEQ1EVM have the promise of achieving the similar performance of the one in the Audi video?  To address my question, let me ask a few detailed question.

    1. which Sekonix headlight is used in the EVM? How much lumen does it emit?

    2. For each pixel of the image, what level of control is achieved? Is it just ON/OFF switch? If not, how many levels of light intensity is controllable in a programmable manner? I see from the link below that "The LED brightness can be controlled through PWM output from the DLPC230-Q1". Though it seems that it is based on changing the current though some physical slide bar. Does this imply that the headlight brightness can only be controlled through physical contact of the moduel?https://www.ti.com/lit/ug/dlpu099a/dlpu099a.pdf?ts=1609889432405&ref_url=https%253A%252F%252Fwww.ti.com%252Ftool%252FDLP5531LEQ1EVM

    3. what is the dimension(H * L * H) of EVM? Or could I find such information somewhere?

    4. How does this EVM handles low beam compared to high beam? Or it is only made for low-beam applications since the Peak Lux at 25 m (measured at center of image) is only 120 according to the same link in question (2).

    Thank you.

    -Yongxin

  • 0 in reply to 6003006
    TI__Mastermind 27780 points

    Hi Yongxin,

    Yes, the DLP5531-Q1 is used to achieve the showcased performance and currently the only high resolution exterior headlight DLP DMD based chipset available on the market today.

    To better answers questions 1, 3, and 4, please use the DLP-OMM-SEARCH tool here --> https://www.ti.com/tool/DLP-OMM-SEARCH .This spread contains multiple light engine module suppliers, all the specifications, and contacts for additional details. Any details not available in this spreadsheet about the module performance can be better answered by the supporting company, while TI can provide support for the DLP5531-Q chipset. Here are the DLP5531-Q1 based light engine options:

    Application DMD Part Number Max Display
    Resolution    		 FOFO Contrast LED Type Max Lumens Throw Ratio F/# Field of View (Degrees) Peak Illuminance @ 25m (Lux) Optical Module Model Number Company Controller
    Electronics
    Included?    		 Country Company Website Contact Company Product Information Page Additional features
    Exterior Headlight DLP5531-Q1 1152 x 576 300:1 Nichia 3950 lm 2.4 1 14˚x7˚ 130 lux DLP5531LEQ1 SEKONIX Co., Ltd. Yes Republic of Korea www.sekonix.com sekonix_omm@list.ti.com
    Exterior Headlight DLP5531-Q1 1152 x 576 300:1 Nichia 2300 lm     14˚x7˚ 125 lux ADB1 Young Optics Yes Taiwan www.youngoptics.com young_optics_omm@list.ti.com HDMI input, Low-Beam/High-Beam Switchable, Fit with ADB/ AFS Function
    Exterior Headlight DLP5531-Q1 1152 x 576 300:1 Nichia 1200 lm     14˚x7˚ 120 lux SEKONIX Co., Ltd. Yes Republic of Korea www.sekonix.com sekonix_omm@list.ti.com
    Exterior Headlight DLP5531-Q1 1152 x 576 200:1 OSRAM Oslon 1050 lm     16˚x8˚ 90 lux TDMDHL1 TQ Optoelectronics Yes Taiwan, Germany www.tqtechnology.com tq_opto@list.ti.com
    Exterior Headlight DLP5531-Q1 1152 x 576 300:1 Nichia 1200 lm     18.5˚x7˚ Ningbo Sunny Automotive Optech Co., Ltd. No China www.sunnyautomotiveoptech.com sunny_omm@list.ti.com
    Symbol Projector DLP5531-Q1 1152 x 576 300:1 Nichia 1300 lm     18˚x9˚ Ningbo Sunny Automotive Optech Co., Ltd. No China www.sunnyautomotiveoptech.com sunny_omm@list.ti.com

    Regarding question 2, the DLP5531-Q1 uses a combination of the PWM LED driver, landed-duty cycle of the DMD mirrors, and bit sequencing settings that user can set to balance peak brightness and range of intensities. The DLP5531-Q1 chipset is very self contained in optimizing the sequences based on a few user inputs to specify which is a priority to you (brightness vs range of intensities). You can read more about how the video processing of the chipset works in the DLP5531-Q1 Chipset Video Processing for Light Control Applications app note.

  • 0 in reply to Akeem Whitehead
    Prodigy 60 points

    Hi Akeem,

    I have contacted SEKONIX about the headlight and it seems that the intensity shouldn't be a problem. The video processing link boosts a lot  of my understanding on the device, like intensity level, latency and refresh rate!

    There are still some follow-up Qs on the scalability, mounting, modular design and IP rating of the EVM.

    1. (Scalability) If multiple headlights(two) are used at the same time, are there any sub-modules that can be shared between the two so that the total price could drop.

    2. (Mounting) Will we be able to mount the light(size constraint) in the traditional place of the headlight and have wire long enough to connect it to the controller inside the car?

    3. (modular design) Could I replace the headlight sub-module with other headlight on the market?

    4. (IP rating) Will the product work outside, especially when there's rain or snow? And how feasible it is to build a enclosure box for the module?

    5. DLP whitepaper also mentions about the background 1D matrix light, is there any product on the market as a supplementary to the base low-beam light and DLP light?

    Thank so much for the time!

    Yongxin

  • 0 in reply to 6003006
    TI__Mastermind 27780 points

    Response in following post.

  • 0 in reply to 6003006
    TI__Mastermind 27780 points

    Hi Yongxin,

    Most of your questions are more applicable to the design process of a tier 1 automaker, but I will try to answer:

    1. It is not possible to share any of the sub-modules of the DLP5531LEQ1EVM between two headlights.

    2. The DLP5531LEQ1EVM is a standalone unit, and not physically optimized to be mounted in a real production headlight enclosure. Thw unit hardware and dimensions are optimized for lab measurements. You will need to make additional hardware to mount the unit in an enclosure. The unit includes a uHDMI connector for you to run a long cable for test purposes (cable not included). The Cheetah USB-to-SPI interface is used as the SPI Host Controller used by the GUI for evaluation.

    3. The video output from the ECU to the DLP HL module can be modular in the sense that either an OpenLDI or Parallel-RGB can be used, and a SPI or I2C host interface can be used for register R/W and command purposes.

    4. The EVM is intended for lab measurements. You will need to create a custom enclosure to meet the IP ratings.

    5. DLP headlight solutions are commonly paired with LED array headlight modules for coverage of the low and high beam FOV.

  • 0 in reply to Akeem Whitehead
    Prodigy 60 points

    Hi Akeem,

    I see, that's bad news. It would be expensive when we need two headlights.

    Does TI has LED array headlight module, or do you have some recommendations on where to get one?

    -Yongxin

  • 0 in reply to 6003006
    TI__Mastermind 27780 points

    Hi Yongxin,

    Yes, I understand the cost is high, but the benefit of the DLP headlight solution is the high resolution. Depending on the content you need to display, especially if the content is symbol projection, there is a noticeable quality difference between a DLP versus LED headlight solution. TI currently only offers the following LED headlight solution reference design material: