| 摘要 |
Disclosed herein is a moiré shape measurement apparatus using a Liquid Crystal Display (LCD) panel. The moiré shape measurement apparatus includes a light source, a variable grating, a viewing lens, a light receiving unit, a computation unit, and a driving device. The light source emits light. The variable grating passes the emitted light therethrough, and creates a projection grating pattern. The viewing lens focuses a reflected grating pattern that is obtained when the projection grating pattern is reflected from the object. The light receiving unit receives the light of the reflected grating pattern passed through the viewing lens. The computation unit previously stores the viewing grating pattern, forms the moiré pattern by overlaying the reflected grating pattern, received from the light receiving unit, on the stored viewing grating pattern, and computes the shape of the object using the moiré pattern. The driving device adjusts a direction and a pitch in order to form a grating of the variable grating.
|
