Abstract: The present invention relates to a photobioreactor intended for the notably continuous culture of photosynthetic microorganisms, preferably microalgae, comprising at least one culture enclosure (1) intended to contain the microorganism culture medium (3) and at least one light source (2) outside the culture enclosure (1), characterized in that it further comprises at least one cylindrical or prismatic light diffusion element (4) placed inside the culture enclosure (1), the light diffusion element (4) being coupled optically with the light source (2) so as to collect the photons emitted by the light source (2) and to return them to the culture medium (3) by its lateral surface. The present invention also relates to the use of a photobioreactor to cultivate photosynthetic microorganisms and to the use of a light diffusion element (4) to illuminate the culture medium of a photobioreactor.

Abstract: The invention relates to a photobioreactor for cultivating photosynthetic micro-organisms, comprising: a) at least one cultivation container (1) for containing the culture medium (3) of the micro-organisms, b) photovoltaic cells (2) isolated from the culture medium (3), emitting light towards the culture medium (3), and c) means (4) for powering the photovoltaic cells (2) in order to operate the photovoltaic cells in light emission mode.

Abstract: The present invention relates to a photobioreactor intended for the notably continuous culture of photosynthetic microorganisms, preferably microalgae, comprising at least one culture enclosure (1) intended to contain the microorganism culture medium (3) and at least one light source (2) outside the culture enclosure (1), characterized in that it further comprises at least one cylindrical or prismatic light diffusion element (4) placed inside the culture enclosure (1), the light diffusion element (4) being coupled optically with the light source (2) so as to collect the photons emitted by the light source (2) and to return them to the culture medium (3) by its lateral surface. The present invention also relates to the use of a photobioreactor to cultivate photosynthetic microorganisms and to the use of a light diffusion element (4) to illuminate the culture medium of a photobioreactor.

Abstract: The invention relates to a photobioreactor for cultivating photosynthetic micro-organisms, comprising: a) at least one cultivation container (1) for containing the culture medium (3) of the micro-organisms, b) photovoltaic cells (2) isolated from the culture medium (3), emitting light towards the culture medium (3), and c) means (4) for powering the photovoltaic cells (2) in order to operate the photovoltaic cells in light emission mode.