| 摘要 |
An adjustable support which enables any element to be positioned mainly those concerned with visual communications, preferably having a flat form (plasma screen, LCD, TFT, poster advertisement etc.) at any angle and in any position with respect to the initial plane with the normal vector to the screen covering a wide three dimensional angular range (stereoradian). Due to its special configuration the adjustable support formed by at least three rods which are adjustable in length, permits the one way definition of a plane on which a supported visual element is placed, a plane which may form a solid angle such that it permits optimum viewing from any position of the user since the normal vector to the screen may be made to coincide with the visual line of the user.
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