Observation system and light emitting method

A light emitting method for emitting irradiation light with which different irradiation environments are irradiated, the light emitting method comprising:

• acquiring an information signal including irradiation environment information regarding an irradiation environment of the irradiation light;
• determining whether or not the irradiation environment information includes an open field by the information signal;
• and
• causing a display unit to display a first software key by a control signal in a case where the irradiation environment information includes the open field, and causing the display unit to display a second software key by the control signal in a case where the irradiation environment information does not include the open field,
• wherein a function corresponding to predetermined light emission is disabled in the first software key, and the function corresponding to the predetermined light emission is enabled in the second software key.

An observation system comprising a control device that controls irradiation light with which different irradiation environments are irradiated, wherein the control device includes:

• a control unit that controls a light source device that generates the irradiation light;
• and
• an acquisition unit that acquires irradiation environment information regarding an irradiation environment of the irradiation light,
• the control unit causes a display unit to display a first software key in a case where the irradiation environment information acquired by the acquisition unit includes an open field, and causes the display unit to display a second software key in a case where the irradiation environment information does not include an open field,
• the first software key corresponds to a function of periodically repeating at least a first state and a second state in which light emission intensity in a band of visible light is higher than that in the first state, and has a limitation such that the second state is light emission of a period longer than 7.7 ms, and
• the second software key does not have the limitation.