Mirror to 20 °, 60 °, 85 °
Uses: used in paint, ink, plastic, marble, etc. Measurement of the surface gloss.
Test technical features: light source through the lens to become parallel or slightly convergent beam of light shooting at the test plate film surface, the reflected light converged by the receiving lens, after the scene has been photovoltaic cells to absorb light bar.
|
|
|
|
| Select Image |
 |
|
|
|
|
