Abstract: The technology disclosed herein relates to a transcutaneous irradiation device having a top portion and a bottom portion. The top portion may include one or more transcutaneous irradiation modules configured to be arranged on a head of a user, the top transcutaneous irradiation modules including a top pulsed laser source. The bottom portion may include one or more transcutaneous irradiation modules configured to be arranged on an abdomen of the user, the top transcutaneous irradiation modules including a bottom pulsed laser source. A modulation frequency may be applied to the top and bottom irradiation modules such that the top and bottom pulse laser sources are subjected to a double pulse.

Abstract: The invention relates mainly to an optical guide for diffusing a light radiation through a surface, which is essentially characterized in that it includes a base (3,31) comprising or able to hold at least one diffusion rod (2, 2a; 35a, 35b, 35c) whose lower diffusion end (7, 7a; 38a, 38b, 38c) protrudes from said base (3) and is intended to be applied on or near said surface, and whose upper collecting end (6,6a; 37a, 37b, 37c) is intended to be located near and opposite a power supplied light source (36a, 36b, 36c), and in that the diffusion rod (2, 2a; 35a, 35b, 35c) comprises a material able to transmit light from its collecting end (6,6a; 37a, 37b, 37c) up to its diffusion end (7, 7a; 38a, 38b, 38c). The invention also relates to an irradiation module and to an irradiation device adapted to the transcranial and/or transcutaneous irradiation by light radiation.

Abstract: The invention relates to a transcutaneous irradiation device which is essentially characterised in that it comprises: a top portion (1) suitable for positioning on the head (3) of a user and comprising at least one transcutaneous irradiation module (10) consisting of at least one irradiation source, and a bottom portion (9) suitable for being positioned on the abdomen (16) of the user and comprising at least one transcutaneous irradiation module (10) consisting of at least one irradiation source. In particular, the transcutaneous irradiation device of the invention is configured for the prevention or treatment of neurological disorders and/or neurodegenerative diseases, preferably for the prevention or treatment of Alzheimer's disease, Parkinson's disease and/or Huntington's disease.

Abstract: The invention relates mainly to an optical guide for diffusing a light radiation through a surface, which is essentially characterized in that it includes a base (3,31) comprising or able to hold at least one diffusion rod (2, 2a; 35a, 35b, 35c) whose lower diffusion end (7, 7a; 38a, 38b, 38c) protrudes from said base (3) and is intended to be applied on or near said surface, and whose upper collecting end (6,6a; 37a, 37b, 37c) is intended to be located near and opposite a power supplied light source (36a, 36b, 36c), and in that the diffusion rod (2, 2a; 35a, 35b, 35c) comprises a material able to transmit light from its collecting end (6,6a; 37a, 37b, 37c) up to its diffusion end (7, 7a; 38a, 38b, 38c). The invention also relates to an irradiation module and to an irradiation device adapted to the transcranial and/or transcutaneous irradiation by light radiation.