초록 ▼

A tuned wave phased array includes a plurality of spaced transmitter elements, a signal generator that produces an activation signal for activating the transmitter elements to transmit a guided wave in an associated medium and a delay circuit for sequentially delaying the activation of at least one

A tuned wave phased array includes a plurality of spaced transmitter elements, a signal generator that produces an activation signal for activating the transmitter elements to transmit a guided wave in an associated medium and a delay circuit for sequentially delaying the activation of at least one of the transmitter elements for creating constructive interference of a selected mode of the wave propagating in the medium, thereby boosting the selected mode of the wave.

대표청구항 ▼

A tuned wave phased array includes a plurality of spaced transmitter elements, a signal generator that produces an activation signal for activating the transmitter elements to transmit a guided wave in an associated medium and a delay circuit for sequentially delaying the activation of at least one

A tuned wave phased array includes a plurality of spaced transmitter elements, a signal generator that produces an activation signal for activating the transmitter elements to transmit a guided wave in an associated medium and a delay circuit for sequentially delaying the activation of at least one of the transmitter elements for creating constructive interference of a selected mode of the wave propagating in the medium, thereby boosting the selected mode of the wave. /li>7. An image reading apparatus according to claim 6, wherein said second scanning optical system moves at substantially half the speed of said first scanning optical system.8. An image reading apparatus according to claim 5, wherein an area of the supporting region on the side of the scanning start position is larger than an area of the supporting region on the side opposite the scanning start position.9. An image reading apparatus according to claim 5, wherein said image reading apparatus is supported on the side of the scanning start position at opposed ends thereof in a direction perpendicular to the scanning direction, and said image reading apparatus is supported on the opposite side at one end thereof in the direction perpendicular to the scanning direction.10. An image forming apparatus comprising: image reading means for reading an image on an original, said image reading means having an original placement portion, on which the original is to be placed, and original scanning means, which moves from a scanning start position in a scanning direction along said original placement portion;supporting means for supporting said image reading means;image forming means for forming an image on a recording sheet in accordance with image information read by said image reading means; anda delivery portion, onto which the recording sheet having the image formed by said image forming means is delivered, said delivery portion being disposed between said image reading means and said image forming means,wherein an area of a region in which said image reading means is supported on a side of the scanning start position in the scanning direction is larger than an area of a region in which said image reading means is supported on a side opposite the side of the scanning start position.11. An image forming apparatus according to claim 10, wherein said original scanning means comprises:a first scanning optical system movable along said original placement portion; anda second scanning optical system for movable at a speed lower than a speed of said first scanning optical system so as to guide light from said first scanning optical system to a light receiving portion.12. An image forming apparatus according to claim 11, wherein said second scanning optical system moves at substantially half the speed of said first scanning optical system.13. An image forming apparatus according to claim 10, wherein said image reading means is supported on the side of the scanning start position at opposed ends thereof in a direction perpendicular to the scanning direction, and said image reading means is supported on the opposite side at one end thereof in the direction perpendicular to the scanning direction.14. An image forming apparatus according to claim 10, further comprising deflection preventing means for preventing a deflection of said image reading means.15. An image forming apparatus according to claim 10, further comprising operation stopping means for stopping an image reading operation of said image reading means when an amount of deflection of said image reading means is within a predetermined range.16. An image forming apparatus comprising: image reading means for reading an image of an original, said image reading means having an original placement portion, on which the original is to be placed, and original scanning means which moves from a scanning start position in a scanning direction along said original placement portion,supporting means for supporting said image reading means,image forming means for forming an image on a recording sheet in accordance with image information read by said image reading means; anda delivery portion, onto which the recording sheet having the image formed by said image forming means is delivered, said delivery portion being