| 摘要 |
PROBLEM TO BE SOLVED: To improve light transmittance by forming a structure, having different spacings of conductive meshes in the longitudinal and lateral directions from the result of classifying EMI in the horizontal and vertical components and observing them. SOLUTION: An incoming wave 1 is filtered by an EMI shield filter 3 to realize an EMI shield, a part of the wave 1 passes as a transmitted wave 2, the wave 1 is classified into vertical and horizontal polarized components 1-1, 1-2, the two components pass through conductive meshes, having conductors arranged with close spacings in the vertical direction and rough spacings in the horizontal direction, such that the vertically polarized component 1-1 which passes through is attenuated less than for the horizontal polarized component 1-2. Hence the electromagnetic wave passed through the EMI shield filter 3 can be attenuated down to approximately equal quantities of the vertical and horizontal polarized components 1-1, 1-2. As a result, the light transmittance can be improved after realizing attenuation to the electromagnetic wave quantities.
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