danholt Licht Blog

Bad light spoils not only the eyes but also the mood

Bad light spoils not only the eyes but also the mood

Artificial light with the quality of sunlight is changing the world

Everything appears more realistic, true-to-life, colourful, lively and positive when it is illuminated in a high-quality way, just like the sun.
High-quality light lets us discover new things, recognize subtleties and nuances and gives us a positive attitude towards life. Continue reading

Artificial light in the quality of sunlight - SORAA full spectrum LED

Artificial light in the quality of sunlight - SORAA full spectrum LED

SORAA full spectrum LED based on GaN to GaN Technology

Professor Shuji Nakamura is one of the founders of Soraa Inc. and was awarded the Nobel Prize for his research on the blue LED.
With the LEDs of the so-called VIVID series, Soraa has created full-spectrum LEDs that leave conventional light bulbs and halogen lamps far behind. Continue reading

SORAA Point Source Optics - A high-tech lens system instead of a reflector

SORAA Point Source Optics - A high-tech lens system instead of a reflector

Focus: A high-tech lens system instead of a reflector 

SORAA Point Source Optics
The ability to direct and direct light is a powerful tool.
By combining the unique GaN on GaN technology of small single-point LEDs with the optics developed by Soraa, it is possible to generate a very intense light with sharp individual shadows and homogeneous color rendering in the entire light cone. Continue reading

The color temperature of a light source - what is it and how does it affect me?

The color temperature of a light source - what is it and how does it affect me?

The color temperature of a light source - what is that?

The color temperature is the measure of the color impression of a light source
Definition and Unit of Measure
The color temperature is measured and specified in Kelvin (K).
The graphic above shows typical examples of light colors and their assignment to degrees Kelvin for known light sources.

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50 Shades of White - Vibrant colorfulness starts with pure white

50 Shades of White - Vibrant colorfulness starts with pure white

White needs violet - SORAA Natural White Technology

The violet emitting Gan on GaN LEDs from SORAA have the required level of so-called Fluorescence excitation, which is necessary to be able to clearly distinguish between different shades of white of clothing, cosmetics, paper, devices and also human teeth. White is not just white!

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SORAA Vivid Vollspektrum LED - naturgetreues Licht wie von der Sonne

SORAA Vivid Vollspektrum LED - naturgetreues Licht wie von der Sonne

The sun is the measure of all things in terms of light

The quality of the sun's light and the colors it contains is decisive for human color perception.

You can't do more than the sun can provide - sunlight is best suited to naturally display or "render" all shades and nuances of color.

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TM-30 the new measure of color - the better Color Rendering Index (CRI)

TM-30 the new measure of color - the better Color Rendering Index (CRI)

TM-30 the new measure of color - the better Color Rendering Index (CRI)

The new standard of color rendering index

Together with scientists from SORAA Inc. and the Illumination Engineering Society (IES), a new and improved method for measuring the color rendering quality of illuminants was developed, which far exceeds the accuracy of the CRI value previously used.

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A triangle of glass - makes visible what is hidden in the white light

A triangle of glass - makes visible what is hidden in the white light

Visible white light contains all colors ?

A prism - a triangle made of glass - makes visible what is hidden in the white light.

If a narrow, neutral white beam of light is directed onto a prism made of glass or transparent plastic, the beam penetrates the prism and exits on the opposite side.
The path of the light beam is "bent" twice. Once when passing from the air into the transparent material of the prism and a second time when exiting the prism.
This refraction is caused by the sudden increase and decrease in density along the path of the light beam.
The air surrounding the prism has a lower density than the prism. Continue reading