초록 ▼

An ultrasonic diagnostic scanner for obtaining ocular measurements is described. The ultrasonic diagnostic scanner generally comprises transmitter means for generating an ultrasonic signal, receiver means for receiving echo signals and for producing a peak signal at substantially the maximum amplitu

An ultrasonic diagnostic scanner for obtaining ocular measurements is described. The ultrasonic diagnostic scanner generally comprises transmitter means for generating an ultrasonic signal, receiver means for receiving echo signals and for producing a peak signal at substantially the maximum amplitude of the echo signals when the echo signals exceed a predeterminable threshold level, programmable means for producing count signals indicative of the times between the transmission of the ultrasonic signal and the occurrence of a selected number of peak signals, and between the occurrence of predetermined peak signals, microcomputer means for controlling the transmitter and programmable means, and output means for generating a perceptible output indicative of the ocular parameter being measured. The ultrasonic diagnostic scanner also includes sensitivity adjustment means for maintaining a predetermined amplitude level of at least one of the echo signals under the control of the microcomputer means. Threshold adjustment means is also provided for adjusting the predeterminable threshold level under the control of the microcomputer means. A dot matrix liquid crystal display is also included for visually displaying an echo histogram of the echo signals.

대표청구항 ▼

An ultrasonic diagnostic scanner for measuring at least one parameter of an eye, comprising: transmitter means for causing a transducer to transmit an ultrasonic signal; receiver means for receiving echo signals representing reflections of said transmitted ultrasonic signal and for producing a peak

An ultrasonic diagnostic scanner for measuring at least one parameter of an eye, comprising: transmitter means for causing a transducer to transmit an ultrasonic signal; receiver means for receiving echo signals representing reflections of said transmitted ultrasonic signal and for producing a peak signal only at substantially the maximum amplitude of said echo signals when said echo signals exceed a predetermined threshold level which is below said maximum amplitude; programmable means responsive to said peak signals for producing a first count signal indicative of the time between the transmission of said ultrasonic signal and the occurrence of a selectable number of peak signals and for producing a second count signal indicative of the time between the occurrence of predetermined peak signals; microcomputer means for controlling said transmitter means and said programmable means, said microcomputer means determining said selectable number and said predetermined peak signals, and for determining said eye parameter from at least one of count signals; and output means responsive to said microcomputer means for generating a perceptible output indicative of said eye parameter.