DLP4710LCFQL datasheet(28/45 Pages) TI2

28 / 45 page

• AILL = illumination area on the DMD (cm2)

• QINCIDENT = total incident optical power on DMD (W) (measured)

• AARRAY = area of the array (cm 2) (data sheet)

• OVILL = percent of total illumination on the DMD outside the array (%) (optical model)

• OPUV-RATIO = ratio of the optical power for wavelengths <410 nm to the total optical power in the illumination

spectrum (spectral measurement)

• OPVIS-RATIO = ratio of the optical power for wavelengths ≥410 and ≤800 nm to the total optical power in the

illumination spectrum (spectral measurement)

• OPIR-RATIO = ratio of the optical power for wavelengths >800 nm to the total optical power in the illumination

spectrum (spectral measurement)

• OPBLU-RATIO = ratio of the optical power for wavelengths ≥410 and ≤475 nm to the total optical power in the

illumination spectrum (spectral measurement)

• OPBLU1-RATIO = ratio of the optical power for wavelengths ≥410 and ≤445 nm to the total optical power in the

illumination spectrum (spectral measurement)

The illumination area varies and depends on the illumination overfill. The total illumination area on the DMD

is the array area and overfill area around the array. The optical model is used to determine the percent of the

total illumination on the DMD that is outside the array (OVILL) and the percent of the total illumination that is on

the active array. From these values the illumination area (AILL) is calculated. The illumination is assumed to be

uniform across the entire array.

From the measured illumination spectrum, the ratio of the optical power in the wavelength bands of interest to

the total optical power is calculated.

Sample calculation:

QINCIDENT = 9.40 W (measured)

AARRAY = (1.0368 × 0.5832) = 0.6047 cm2 (data sheet)

OVILL = 16.3% (optical model)

OPUV-RATIO = 0.00021 (spectral measurement)

OPVIS-RATIO = 0.99977 (spectral measurement)

OPIR-RATIO = 0.00002 (spectral measurement)

OPBLU-RATIO = 0.28100 (spectral measurement)

OPBLU1-RATIO = 0.03200 (spectral measurement)

AILL = 0.6047 ÷ (1 - 0.163) = 0.7224 cm2

ILLUV = [0.00021 × 9.40W] × 1000 ÷ 0.7224 cm2 = 2.732 mW/cm2

ILLVIS = [0.99977 × 9.40W] ÷ 0.7224 cm2 = 13.01 W/cm2

ILLIR = [0.00002 × 9.40W] × 1000 ÷ 0.7224 cm2 = 0.260 mW/cm2

ILLBLU = [0.28100 × 9.40W] ÷ 0.7224 cm2 = 3.66 W/cm2

ILLBLU1 = [0.03200 × 9.40W] ÷ 0.7224 cm2 = 0.42 W/cm2

DLP4710LC

DLPS178C – MAY 2020 – REVISED JULY 2023

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DLP4710LCFQL Datasheet(PDF) 28 Page - Texas Instruments