Appearance Inspection Criteria - BenQ MP611 Product Service Manual

B-side:
C-side:
~For spot inspection distance is 45 cm on A/B/C-side. And inspection time is 10~15 sec.
~For scratch inspection distance is 45 cm on A/B/C-side. And inspection time is 10~15
sec.

5.3.11.1.1 Appearance Inspection Criteria

5.3.11.1.1.1. Environment Condition
angle and distance are dependent on surface classification. In all cases, parts
must be held in such that the light reflection does not disturb the
inspector's eye.
Classification
Lighting positioning
Inspection position relative to part
Inspection distance
Side - right/left sides surfaces
Back cover - Back cover surfaces
Low cause - bottom surfaces
5.3.11.1.1.1.1 Lighting intensity
All appearance quality shall be inspected with the lighting condition as
500~800Lux (natural lighting or white fluorescent light).
5.3.11.1.1.1.2. Inspection angle and distance to object or target
All part inspection must be done under direct overhead lighting. Viewing
Area A Area B
Above of inspected part
90º
45 cm 45 cm
48
Picture 1
Area C
90º 90º
45 cm