The invention relates to a solar lens panel (2) comprising a number of light collecting elements (2) placed next to one another and a number of light guides (4) corresponding to the number of light collecting elements (3); one light guide (4) including a light incident surface (5) is assigned to each light collecting element (3), and each light guide (4) is retained in a holding element (14) at a distance (8) from the light collecting elements (3); said distance (8) between the light collecting elements (3) and the light incident surfaces (5) of the light guides (4) corresponds at least approximately to the focal length of the light collecting elements (3). The light incident surfaces (5) of the light guides (4) are located inside the holding elements (14).

Provided is a culturing observation apparatus including: a light source portion that radiates illumination light into a culturing container, in which cells are being cultured, from a side surface of the culturing container, which is optically transparent, within a predetermined angular range; an image-acquisition portion that, when the illumination light radiated from the light source portion is scattered at the cells in the culturing container and when a portion of this scattered light passes through a bottom surface of the culturing container, acquires an image by capturing the scattered light that has passed through the bottom surface; and a transmitting portion that transmits the image acquired by the image-acquisition portion to an exterior.

Solar-redshift systems comprise an integral array of redshift modules, each having at least a focusing device, a target, and a quantum-dot vessel. The quantum-dot vessel contains quantum dots that emit light having an emission wavelength. The focusing device directs incident solar radiation through a focusing gap and toward the quantum-dot vessel, or into a slab waveguide and then toward the quantum-dot vessel, causing the quantum dots to emit redshifted light having the emission wavelength. The redshifted light is directed to the target, examples of which include a photovoltaic material or a living photosynthetic organism. The target has increased sensitivity or response to photons having the wavelength of the redshifted light. A trapping reflector component of the quantum-dot vessel prevents loss of redshifted light to the environment outside the solar-redshift system and allows undesirable infrared light to be removed from the system.