Digital micromirror devices (DMD) comprise an array of individually addressable MEMs mirrors that can each be set to one of two angular positions. When interfaced with high power light sources and projection optics, and driven using a standard video input, these devices are commonly known as digital light projectors (or digital light processors). The DLP LightCrafter®, provided by Texas Instruments®, is a handheld and versatile example of modern integrated DLP® technology. The LightCrafter can operate as a standard video projector, with 8-bit depth RGB color output at 60Hz. Each frame is displayed by rapidly projecting its composite "bit-planes" in sequential time slots. A bit-plane exists for each digital bit of resolution for each of the red, green, and blue illumination channels (i.e. there are 24 bit-planes displayed per 60Hz frame). Unique to Texas Instruments' DLP technology, the projector can be operated in a "structured light mode", whereby the number of colors and bit depth can be reduced to achieve a higher frame rate. For example, the LightCrafter can accept 3-color, 8-bit 60Hz video input and display monochrome, single bit-plane output patterns at 1,440Hz. To achieve up to 4kHz pattern display rates, up to 96 bit-plane patterns can be pre-loaded into the LightCrafter.
A complete description of Texas Instruments’ DLP LightCrafter and its capabilities can be found here.
Aeon Imaging’s DLM technology
Aeon Imaging’s DLM Essentials Kit includes:
DLP LightCrafter pre-configured for structured light mode using stored line patterns
The necessary optics to collimate and focus the projected light patterns onto a target
Single-board computer with a 1GHz ARM processor
CMOS rolling shutter sensor
The line patterns and projector collimation optics match the illumination and detection fields of view, while the electronics provide temporal synchronization. Confocal imaging has never been so easy! Customize your microscope by relaying the imaging plane to the target and sensor, add microscope objective, polarizers, or wavelength filters as-needed from Edmund Optics’ or Thorlabs’ extensive catalogues, and align your system through a standard internet browser in minutes.