## 1 Introduction  
For most ecological systems, visible light, which occupies the range of electromagnetic radiation wavelengths of 380-780 nm and quantum energies of 1.6-3.2 eV, is the main source of energy [1]. Visible light is extremely important for the existence of life on Earth [2]. The fact is that visible light is the main source of energy in most biosystems [3]. The transformation of the energy of light quanta into the energy of chemical bonds occurs in the process of photosynthesis, for this, higher plants mainly need light in the red and blue regions of the spectrum [4]. Visible light is necessary not only for plants, but also affects representatives of other Kingdoms of living beings (animals, fungi, and microorganisms) [5; 6; 7]. In particular, for the existence of most biological species, such processes as vision, phototropisms, photonastia, etc. are important. In general, light of different wavelength ranges has an important signal-regulatory effect on biological objects [8]. It has long been known for plants that changes in light intensity in different spectral ranges (UV, visible, and near-IR radiation) can significantly affect productivity and physiological status [9]. Observations of these processes were begun in antiquity. After the invention of absorption filters, researchers actively studied the effect of various ranges of visible radiation on biological objects. A large amount of information was accumulated, and the main regularities obtained were confirmed after the creation of monochromators [10]. Interestingly, one of the first three Nobel Prizes in Physiology or Medicine was awarded to [PERSON] (1903) \"in recognition of his services in the treatment of diseases-especially lupus-with concentrated light radiation, which opened up new broad horizons for medical science\" [11]. After 1954, when the laser was invented, the era of research into the effect of laser radiation on biological objects began. \"For fundamental work in the field of quantum electronics, which led to the creation of oscillators and amplifiers based on the maser-laser principle,\" the Nobel Prize was awarded to [PERSON], [PERSON], and [PERSON] [12]. Currently, laser radiation sources are largely replaced by LED illuminators (Light-emitting diodes) [13]. On the whole, photobiology has gone through two important stages: 1. Changing the spectrum of the sun, and 2. Creation of light sources. The second stage involves the use of precision light sources; in this case, accuracy is important. This approach has found wide application in medicine and biology. The first approach allows you to ensure mass scale, and the approach is based on the following principle: absorption of light quanta of broadband radiation occurs in one spectral window, and re-emission of quanta occurs in another, narrower spectral window. The main drivers of photoconversion technologies are theranostics, biophotonics, and a number of areas of physics associated with the creation of devices operating on the basis of sunlight (solar batteries, electrophotosynthesis cells, etc.) [14; 15; 16]. The scope of attempts to apply photoconversion technologies in agriculture is often limited to greenhouses. It is known that for most plants, red (645-715 nm) rays are of the greatest importance [17]. It is the quanta of red light that provide the main energy input to the process of photosynthesis. In addition, the quanta of red light affect the processes of plant development, for example, an increase in intensity in the red and orange parts of the spectrum delays the transition of a plant to flowering [18]. The quanta of blue and violet (380-490 nm) light are also directly involved in the process of photosynthesis [19]. In addition, blue light stimulates the production of proteins and is involved in the regulation of plant development [20]. In plants growing under conditions of insufficient insolation, an increase in the blue component in the solar spectrum leads to flowering [18]. Yellow (595-565 nm) and green (565-490 nm) rays are absorbed by various carotenoids.