Optoma PK-301 Service Manual page 26

2. Brightness
Procedure
Criteria
3. Full On/Full Off Contrast
Procedure
Criteria
4. Uniformity
Procedure
Criteria
- Full white pattern
- Use CL100 to measure brightness values of
P1~P9.
- Follow the brightness formula to calculate
brightness values.
☼ Brightness Formula
Avg. (P1+P2+P3+...+P9) x 0.12
• 35.2 ANSI Lumens
- Full white pattern & full black pattern
- Use CL100 to measure brightness values of full
white pattern P5 & full black pattern B5 ( see
image: 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.
• 800:1 • 800:1 800:1
- Full white pattern
- Use CL100 to measure brightness values of P1~P9
(see image: full white).
- Follow the Uniformity formula to calculate
average values.
☼ Uniformity Formula
ANSI Uniformity = Avg.(P1,P3,P7,P9)/P5×100%
• 50 %
PK-301/PK320/PK301 PLUS
Full white pattern
Full black pattern
Confidential
4-8