The care in lighting helps a lot, as it can get to compensate low contrast in colours by increasing the luminance. The contrasts allow us to separate planes, generating hierarchies, etc. What is more important is that it is not fatiguing. Vision is not ocular; it is cerebral The “picture” that has taken by our retina is sent to the brain where a compendium of psychological aspects (past experiences, cultural factors, interest, etc.)

The care in lighting helps a lot

Will permit the same information acquire different aspects to different people. For a person with normal vision, over 70% of all the information he receives is through the sense of sight. The conscious vision consumes a very high amount of our energy (remember a visit to a museum, we went out exhausted) and for this reason, most of our vision is not conscious. Given the above, it is easy to understand that lighting designs should take full account of this unconscious and cerebral vision and brain. Propose effects very easy to capture, operate in different cultural environments (now globalisation helps) and hardly requires the use of our rational brain.

Do not fatigue. The nature cycles Aspects such as light levels, spectral composition of light, and colour temperature are technical and generate reaction in the body influenced by the characteristics of light. These aspects must be taken into account as positive factors for the design, which improve it rather than creating “noise” in perception. Recently, a new photo-receptor in the retina has been discovered, unlike rods and cones, whose function is the circadian photoreception for the adjustment of the biological clock. Studies are being conducted on its photopigment (melanopsin) to know the wavelength of light most effective in this role.

Psycological aspects Shadow is another important aspect in lighting design where management is more complex. The generation of shadows enhances the contrast and also the presence of shadows shows partially some objects. Our brain is responsible for “supplement” and also as a side effect, we will create some “curiosity” attraction. Many of the ways we have behind us look for these improvements. Technological developments are those with more widespread (and also financial investment) leds, oleds, discharge lamps of lower power, improved regulation of discharge lamps; they are just some of the ways in the name of the efficiency.

We will walk through in the future within the technical field of lighting, the measurable, and the legalised. Outstanding in the subjective aspects is that all the studies are directed towards comfort and even to health by lighting, as the lighting spectrums improved the production performance by making users feel more comfortable. The use of colour in hospitals, and improvement of mood even in offices, etc. Are the ways to enrich the subjective factors of lighting and the vision process. It would be nice to coordinate the results between the technical and subjective developments, since it seems that the former ignores the latter; there is a border between them. I want to reuse the “image of the iceberg” expressed at the beginning of the article. Both aspects are one unit, indivisible.

The technical aspects have their subjective counterpart. One example of the lack of dialogue between the two sides is worldwide regulations for the immediate elimination of incandescent lamps. How the prevalence of interest in the name of efficiency, and certainly in business, is going against health. The famous artist and producer ingo maurer predicted the increasing of visits to psychologists after the disappearance of the incandescent lamp.