Detection device, detecting method, control program and recording medium

1. A detection device which irradiates a test subject with excitation light, and detects fluorescence which is radiated from the test subject, the device comprising:

a light receiving unit which receives the fluorescence;

means for calculating a light receiving intensity of fluorescence which is received by the light receiving unit while changing a relative position between the light receiving unit and the test subject; and

means for specifying an optimal position of the relative position where the light receiving intensity which is calculated by the means for calculating the light receiving intensity becomes a maximum, in which the fluorescence is detected using the optimal position which is specified by the means for specifying,

wherein the light receiving unit further receives reflected light which is excitation light reflected from the test subject when the test subject radiates fluorescence,

wherein means for calculating half-value width of the reflected light is further included,

wherein the half-value width is an index denoting the relative position, and

wherein the means for specifying specifies the half-value width of the reflected light of which light receiving intensity of the fluorescence becomes the maximum as the optimal position.

2. The detection device according to claim 1 , further comprising:

a storage unit which stores the optimal position which is specified by the means for specifying,

wherein the optimal position which is stored in the storage unit is used when detecting the fluorescence.

3. The detection device according to claim 1 , further comprising:

means for informing which informs the fact when the means for calculating the light receiving intensity cannot calculate light receiving intensity of fluorescence which is received by the light receiving unit.

4. The detection device according to claim 3 , further comprising:

a display unit which displays an informing result of the means for informing.

5. The detection device according to claim 1 , further comprising:

an irradiation unit which irradiates the test subject with excitation light,

wherein, when the means for calculating the light receiving intensity cannot calculate light receiving intensity of fluorescence which is received by the light receiving unit, means for adjusting at least one of an output intensity of excitation light which is irradiated by the irradiation unit and a relative position between the irradiation unit and the test subject so that the light receiving intensity of fluorescence which is received by the light receiving unit falls in an appropriate range of light receiving intensity which can be calculated by the means for calculating the light receiving intensity.

6. A non-transitory computer readable recording medium on which a control program for causing a computer to function as each means of a detection device according to claim 1 is recorded.

7. A detecting method in which excitation light is radiated to a test subject, and fluorescence which is radiated from the test subject is detected, the method comprising:

a step of calculating a light receiving intensity of fluorescence which is received by the light receiving unit while changing a relative position between the light receiving unit which receives the fluorescence and the test subject;

a step of specifying an optimal position of the relative position where the light receiving intensity of fluorescence which is calculated in the step of calculating the light receiving intensity becomes a maximum; and

a step of detecting the fluorescence using the optimal position which is specified in the step of specifying,

wherein the light receiving unit further receives reflected light which is excitation light reflected from the test subject when the test subject radiates fluorescence, the method further comprising

calculating a half-value width of the reflected light,

wherein the half-value width is an index denoting the relative position, and

wherein the specifying step specifies the half-value width of the reflected light of which light receiving intensity of the fluorescence becomes the maximum as the optimal position.

8. The detecting method according to claim 7 , further comprising:

a step of manufacturing a fixing member for fixing the relative position to the optimal position after the step of specifying,

wherein, in the step of detecting, the relative position is cause to correspond to the optimal position using the fixing member.