Applications for Advanced Light Control

TI DLP® chipsets have enabled powerful, flexible, and programmable light control solutions.  The DLP advanced light control product portfolio extends the technology’s industry-leading projection display technology into ultra-violet and infrared wavelengths, faster pattern rates, and more advanced pixel control. Through complete reference designs and easy-to-use development tools, TI is accelerating innovative new product development into industrial light control applications.

Learn about advanced light control applications in the following areas:

3D Machine Vision

DLP systems can produce non-contact, highly accurate 3D data in real-time using programmable structured light patterns. By projecting a series of patterns onto an object and capturing the light distortion with a camera or sensor, one can generate a 3D point cloud. The point cloud can be used directly for analysis of the object’s surface area, volume, or feature sizes. It can also be exported to a variety of CAD modeling formats.

3D Machine Vision

3D Printing

3D printing builds an object by depositing material one layer at a time and allows designers and manufacturers to speed up development cycles, make quick adjustments to molds and prototypes, and create highly detailed and customizable parts. Stereolithography 3D printers build objects one layer at a time by curing photosensitive material such as of liquid photopolymer resins. A Computer Aided Design (CAD) model of the object is first converted into a series of cross-sectional slices, representing individual print layers. DLP technology allows an entire cross-sectional slice to be exposed in a single shot by generating a 2D light pattern. This provides faster build times than systems using point-by-point exposure and allows build speeds to be independent of layer complexity.

3D Printing

Digital Lithography

Digital lithography is used for PCB manufacturing, flat panel display repair, laser marking, and other light exposure systems. In digital lithography, DLP technology provides high speed and high resolution light patterns to exposure photoresist films and other photosensitive materials without using contact masks. This reduces material cost, improves production rates, and allows for rapid pattern changes, especially ideal for use cases where fine feature sizes require double patterning.

Digital Lithography

Spectroscopy

All molecules have unique responses to different wavelengths of light. Spectroscopy is an analysis technique that uses these unique responses to identify and characterize materials. In a spectrometer design, the TI DLP Digital Micromirror Device (DMD) can be used as a programmable wavelength selector. Broadband light goes through an optical slit. Then the individual wavelengths of light are dispersed onto the micromirror array using a diffraction grating or prism, allowing subsets of the micromirror array to be mapped to specific wavelengths. Specific wavelengths of light can then be switched to a single-element detector. This powerful design architecture eliminates the need for linear array detectors or motors to generate a spectral scan over a wavelength range, enabling chemical analysis with higher performance and smaller form factors at lower costs.

Spectroscopy