摘要:
The present invention provides a compound device having an eye refractive power measurement function and an eye accommodation function state measurement function, preventing an increase in size and cost in comparison with a known eye refractive power measurement device, and convenient for the operator even when the measurement type is changed. An eye refractive power measurement device includes a measurement type select switch (30) which selects one of at least two types of measurements including normal refractive power measurement, which measures the refractive power of the subject s eye including spherical power, cylinder power, and astigmatism axis, and eye accommodation function state measurement, which determines a change in the refractive power of the subject s eye for high-frequency components. A refractive power measurement section (40) is a multiple meridian direction refractive power measurement section which can measure the eye refractive power in two or more meridian directions. The multiple meridian direction refractive power measurement section measures the refractive power in at least two meridian directions when performing the normal refractive power measurement. The multiple meridian direction refractive power measurement section measures the refractive power in one predetermined meridian direction when performing the eye accommodation function state measurement.
摘要:
The present invention provides a compound device having an eye refractive power measurement function and an eye accommodation function state measurement function, preventing an increase in size and cost in comparison with a known eye refractive power measurement device, and convenient for the operator even when the measurement type is changed. An eye refractive power measurement device includes a measurement type select switch (30) which selects one of at least two types of measurements including normal refractive power measurement, which measures the refractive power of the subject s eye including spherical power, cylinder power, and astigmatism axis, and eye accommodation function state measurement, which determines a change in the refractive power of the subject s eye for high-frequency components. A refractive power measurement section (40) is a multiple meridian direction refractive power measurement section which can measure the eye refractive power in two or more meridian directions. The multiple meridian direction refractive power measurement section measures the refractive power in at least two meridian directions when performing the normal refractive power measurement. The multiple meridian direction refractive power measurement section measures the refractive power in one predetermined meridian direction when performing the eye accommodation function state measurement.
摘要:
A gate self-alignment type field-effect semiconductor device is formed with an insulating film deposited on the surface of a substrate. A polycrystal silicon doped with impurities having a type of conductivity opposite to the conductivity of the substrate extends through a gap in said insulating film to engage the surface of said substrate so as to serve as both a diffusion source and electrode for each of the source and drain of the device.
摘要:
The present invention provides an eye accommodation function state measurement device which places only a small burden on the subject, allows confirmation of an intermediate measurement result, and is more conveniently used. The eye accommodation function state measurement device disposes an image at a plurality of positions by using an image moving mechanism, and measures the accommodation function state of the subject's eye at each position. The eye accommodation function state measurement device includes a control section (65) which provides a measurement suspension period (S6 to S10) in which the measurement is suspended. In the measurement suspension period, the eye accommodation function state measurement device calculates the eye accommodation function state (S7), displays the intermediate measurement result of the eye accommodation function state (S8), or transmits data from the control section (65) to an external storage section (69) (S9).
摘要:
The present invention provides an eye accommodation function state measurement device capable of always obtaining accurate measurement results regardless of the cylinder power, measurement date, and the like, and enabling measurement under conditions the same as the previous measurement conditions. The eye accommodation function state measurement device includes a target projection section 62 which projects a target 62a onto a subject's eye 60, and a target moving mechanism which moves the position of the target 62a along the direction of the optical axis of the subject's eye 60, the eye accommodation function state measurement device disposing the target 62a at a plurality of positions by using the target moving mechanism, and measuring the eye accommodation function state of the subject's eye 60 at each position, the eye accommodation function state measurement device including a target position select section 67 which can select the initial position of the target 62a from a plurality of positions, and a target position correction section 68 which can correct the initial position of the target 62a to an arbitrary position. The target position select section 67 can select one of at least three kinds of power values including “spherical power”, “spherical power+cylinder power/2”, and “spherical power+cylinder power”. as the initial position of the target 62a.
摘要:
The present invention provides an eye accommodation function state measurement device which places only a small burden on the subject, allows confirmation of an intermediate measurement result, and is more conveniently used. The eye accommodation function state measurement device disposes an image at a plurality of positions by using an image moving mechanism, and measures the accommodation function state of the subject's eye at each position. The eye accommodation function state measurement device includes a control section (65) which provides a measurement suspension period (S6 to S10) in which the measurement is suspended. In the measurement suspension period, the eye accommodation function state measurement device calculates the eye accommodation function state (S7), displays the intermediate measurement result of the eye accommodation function state (S8), or transmits data from the control section (65) to an external storage section (69) (S9).