DLPDLCR4710EVM-G2: LightCrafter 4500 vs DLP LightCrafter 4710

Pablo Figueredo

Part Number: DLPDLCR4710EVM-G2
Other Parts Discussed in Thread: DLP4500, DLPC350

I'm thinking about acquiring this projector to use in a 3D structured light scanner, which will be connected through the HDMI port (Because the software does not allow me to connect it in any other way, I can not save the patterns to project into the memory of the projector). The reason why I want to use this projector, the one that has square pixels. This allows me that the projected striped pattern will be correct, and not have the lines deformed.

1) I wanted to know if it is advisable to use in structured light

2) If you have any disadvantage against the DLPLCR6500EVM and distortion?

www.ti.com/.../DLPLCR6500EVM

www.wintechdigital.com/index.php

3) It can be purchased with 0% offset

4) Which projector achieves better definition of the projected pattern connected through the HDMI port (ie as a second screen of the PC) the DLP LightCrafter 4500 or the DLP LightCrafter 4710

Thank you very much

Paul

over 5 years ago

0 Navneet Singh over 5 years ago

TI__Expert 4610 points

Hello Pablo,

I will look in to this query of yours and get back to you very shortly.

Thanks,
Navneet

0 Pablo Figueredo over 5 years ago in reply to Navneet Singh

Prodigy 85 points

hello Navneet, thank you for taking care of this topic personally, it makes me very happy that you answered me so fast !!!

0 Sanjeev over 5 years ago in reply to Pablo Figueredo

TI__Mastermind 30875 points

Hi Paul,

As compared to DLPLCR6500EVM, if you are looking at pattern synchronization and 1:1 pixel accuracy and grayscale linearity, DLP LightCrafter 4500 is better suited. You can use the DLP LightCrafter 4710 if you are using binary b&w patterns, also note that this platform doesn't have all the configurations like trigger mode and GPIO for pattern exposure etc.

DLP LightCrafter 4710 mostly intended for regular video display while DLP LightCrafter 4500 customized for structured light kind of applications.

Regards,
Sanjeev

0 Vivek Thakur over 5 years ago in reply to Sanjeev

TI__Mastermind 22830 points

Hi Pablo,
Please let us know if need further assistance r have a question. If not, I will tentatively close this thread.

0 Pablo Figueredo over 5 years ago in reply to Vivek Thakur

Prodigy 85 points

and to project patterns in a 3D scanner with the projector connected as a second screen (hdmi collection) is the 4500 or the 6500 better? I ask why the 4500 is diamond pixel. Does not this generate fuzzy patterns? Out of focus patterns when interpolating an orthogonal signal and having to force it to project it into a diamond matrix?

0 Vivek Thakur over 5 years ago in reply to Pablo Figueredo

TI__Mastermind 22830 points

Hi Pablo,
DLP4500 and DLP6500 DMD, both are well suited for structured light application. You should choose between them based on your system requirement like resolution, frame rate.

Pablo wrote…
“I ask why the 4500 is diamond pixel. Does not this generate fuzzy patterns? Out of focus patterns when interpolating an orthogonal signal and having to force it to project it into a diamond matrix?”

Diamond pixel architecture offer several unique advantages like:
1. Thinner optical engine because it has side illumination.
2. One can achieve higher brightness by using anamorphic optics (faster F/# in Y direction).
3. Diamond pixel architecture has higher line frequency along X and Y axis compared to manhattern architecture which has high line frequency along +45 degree and -45 degree.

DLPC350 controller enables pixel accurate control for DLP4500 DMD. Our customers have developed 3D scanners with very high precision using DLP4500.

Once again, please choose the device which best meets your system requirement.
Regards,
Vivek

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DLPDLCR4710EVM-G2: LightCrafter 4500 vs DLP LightCrafter 4710