myERCO

myERCO

Your free myERCO account allows you to mark items, create product lists for your projects and request quotes. You also have continuous access to all ERCO media in the download area.

Login

You have collected articles in your watchlist

Technical environment

Technical environment

Global standard 220V-240V/50Hz-60Hz
Standard for USA/Canada 120V/60Hz, 277V/60Hz
  • 中文

Our contents are shown to you in English. Product data is displayed for a technical region using 220V-240V/50Hz-60Hz.

More user friendliness for you

ERCO wants to offer you the best possible service. This website stores cookies for this purpose. By continuing to use this website, you consent to the use of cookies. For more information, please read our privacy policy. If you click on "Do not agree", essential cookies will continue to be set. Certain contents of external pages can no longer be displayed.

{{ tu_banner_headline }}

tu_banner_copy

Photopic vision: How do we see during the day?

Photopic vision: Representation of the sky with sufficient brightness.

Photopic vision is also known colloquially as day vision. In contrast to scotopic vision (night vision) and mesopic vision (twilight vision), photopic vision consists of visual perception when there is sufficient brightness and is performed via the cones in our eye. This enables us to recognize colors. Since the concentration of cones is highest in the foveal area, daytime vision also has high visual acuity.

Good to know: Experts speak of photopic vision when the eye adapts to luminances exceeding 3 cd/m2.

ERCO Light Knowledge is also available as a whitepaper:

Further topics on seeing and perceiving

Do you need further information?

You can contact your regional contact partner via:

You can gladly send us an e-mail or ask your question here

Your data will be handled confidentially. For further information see Data protection declaration.

Products

Projects

Downloads

Planning light

About ERCO

Contact

Inspiration