Microscope system

1. A microscope system comprising:

a stage configured to have a specimen placed thereon;

a light emitting diode configured to emit illumination light for illuminating the specimen;

an optical system configured to condense the illumination light emitted by the light emitting diode and irradiate the specimen with the illumination light;

an input unit configured to receive an input of a light control signal that adjusts a light amount of the light emitting diode; and

a control unit configured to:

determine whether the light control signal instructs to decrease or increase the light amount of the light emitting diode,

when the light control signal instructs to decrease the light amount of the light emitting diode, control the light amount of the light emitting diode to instantly have a value according to the light control signal, and

when the light control signal instructs to increase the light amount of the light emitting diode, select a predetermined time from among a plurality of values to control the light amount of the light emitting diode to become a light amount according to the light control signal by delaying the light control signal by the predetermined time from a timing when the light control signal is input, by changing the light amount of the light emitting diode to become the light amount according to the light control signal in a stepwise manner within the predetermined time.

2. The microscope system according to claim 1 , wherein the control unit starts to control the light amount of the light emitting diode when the microscope system is powered up.

3. The microscope system according to claim 1 , wherein the control unit controls the light emitting diode by exponentially and monotonously increasing and outputting, at fixed time intervals, a light amount instruction value that indicates the light amount of the light emitting diode such that the light amount instruction value reaches the light amount according to the light control signal within the predetermined time.

4. The microscope system according to claim 1 , wherein the control unit controls the light emitting diode by outputting at monotonously decreasing time intervals, an equally-spaced light amount instruction value that instructs the light amount of the light emitting diode to reach the light amount according to the light control signal within the predetermined time.

5. The microscope system according to claim 3 , further comprising:

a storage unit configured to store the light amount instruction value when the microscope system is powered up,

wherein the control unit controls the light amount of the light emitting diode to become the light amount according to the light control signal after lapse of the predetermined time when the light amount of the light emitting diode according to the light control signal is larger than the light amount of the light emitting diode according to the light amount instruction value stored in the storage unit.

6. The microscope system according to claim 1 , wherein the input unit receives an input of an instruction signal that instructs change of the predetermined time.

7. The microscope system according to claim 1 , further comprising:

a detection unit configured to detect whether an observer is observing the specimen,

wherein the control unit controls the light amount of the light emitting diode when the detection unit detects that the observer is observing the specimen.

8. The microscope system according to claim 1 , wherein the predetermined time is in a range of from 0.5 to 3 seconds.

9. The microscope system according to claim 1 , wherein the predetermined time is in a range of from 1 to 2 seconds.

10. The microscope system according to claim 1 , wherein the predetermined time is 1 second.