| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optometer realizing a smooth change in a prism degree and precisely examining a visual function. <P>SOLUTION: This optometer is provided with a rotary prism applying the prism degree to an object eye to be examined, a pulse motor rotatingly driving the rotary prism in the direction of changing the prism degree, a rotation transmission means transmitting the rotation of the pulse motor to the rotary prism, an instruction means inputting an instruction signal of the rotation start and the rotation stop to the rotary prism and a control means driving the pulse motor to change the prism degree at a speed of 5 pulse/sec. and 0.1-1.0 prism/sec, after inputting the instruction signal of rotation start by the instruction means till inputting the instruction signal of the rotation stop is inputted. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
