Optoma EP776 - Page 52

EP776 Series/EP782 Series
Condential
4-10
2. Brightness
Procedure - Full white pattern
- Use CL100 to measure brightness values of
P1~P13.
- Follow the brightness formula to calculate
brightness values.
☼ Brightness Formula
Avg. (P1~P9)*1.1m
2
Criteria - 1780 lumen (EP776 series)
- 2030 lumen (EP782 series)lumen (EP782 series)
3. Ful On/Full Off Contrast
Procedure - Full white pattern & full black pattern
- Use CL100 to measure brightness values of full
white pattern P5 & full black pattern B5 ( see im-
age: full white)
- Follow Contrast formula to calculate contrast
values.
☼ Contrast Formula
P5/B5
note: P5=center of white image
B5 = the center of black image.
Criteria - 1500:1
4. Uniformity
Procedure - Full white pattern
- Use CL100 to measure brightness values of
P1~P13 (see image: full white).
- Follow the Uniformity formula to calculate
average values.
☼ Uniformity Formula
ANSI Uniformity==
Criteria - 60 %
Avg.(P1,P3,P7,P9)
P5
X100%
Full black pattern
Full white pattern