Artificial lighting system for fish and a method of providing fish lighting
A fish lighting system has an input interface ( 10 ) which receives instructions corresponding to a desired fish behavioral and/or physiological response ( 12 ). This is converted into a lighting control signal (RGB, t) for driving a lighting arrangement ( 18 ), with the intensity and color of the output from the lighting arrangement selected to obtain the desired fish behavioral and/or physiological response.
1. A fish lighting system, comprising:
a lighting arrangement;
an input interface configured to receive instructions representing a desired fish behavioral and/or physiological response, wherein the input interface is configured: to receive the instructions as a set of at least two coordinate values comprising a first coordinate value and a second coordinate value; or to convert the instructions into said set of at least two coordinate values; and
a processor configured to convert the at least two coordinate values into a lighting control signal for driving the lighting arrangement, wherein the first coordinate value is defined in terms of a visual response, and the second coordinate value is defined in terms of a response of a non-visual photoreceptor;
wherein the lighting control signal is configured to select an intensity and color of output from the lighting arrangement to obtain the desired fish behavioral and/or physiological response.
2. A system as claimed in claim 1 , wherein the visual response is a visual response during daylight, and the set of at least two coordinate values further comprises a third coordinate value which is defined in terms of a visual response at night.
3. A system as claimed in claim 2 , wherein the input interface is further configured to:
receive a light intensity parameter that is processed by the processor to determine the lighting control signal; or
convert the instructions into the light intensity parameter.
4. A system as claimed in claim 1 , wherein the lighting arrangement comprises a plurality of LEDs.
5. A system as claimed in claim 1 , further comprising:
a temperature sensor and/or
an ambient light sensor.
6. A system as claimed in claim 1 , wherein the non-visual photoreceptor is a pineal photoreceptor, a parapineal photoreceptor, a deep brain photoreceptor or a melanopsin photoreceptor.