| 摘要 |
A display evaluation system for evaluating a liquid crystal panel (10) comprises an optical adjustment unit (20), a photographic camera (30), and a measurement unit (35). An image signal generation unit (15) is connected to the liquid crystal panel (10). The photographic camera (30) is provided with a CCD image sensor (31). The optical adjustment unit (20) is comprised of lenses (221, 222). In the optical adjustment unit (20), an optical filter (21) which has a transmittance gradient provided by machining a metal plate into a mesh structure is arranged in a position of a diaphragm. The CCD image sensor (31) arranged in a defocus position is shaped to suppress a response beyond the Nyquist frequency. Consequently, it is possible to reduce the occurrence of a moiré pattern and to capture an image resolved for each pixel. |
