# Spectral Viewer

<main class="content-wrap card" id="bkmrk-this-module-displays">This module displays spectral and / or reflectance curves.  
The goal is to check the quality of your light in your cabin to optimize your viewing conditions, for example.

[![image-1638451941983.png](https://wiki.coraye.com/uploads/images/gallery/2021-12/scaled-1680-/image-1638451941983.png)](https://wiki.coraye.com/uploads/images/gallery/2021-12/image-1638451941983.png)

<div><div><div>---

</div></div></div>#### <span data-slate-fragment="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">How to use Spectral Viewer</span>

<span class="text-4505230f--TextH400-3033861f--textContentFamily-49a318e1"><span data-key="3439aafcd8594a5abdcb932517527462">First, we need to load or capture light samples, or color samples, to display their curves.</span></span>

Start by capturing them:

<p class="callout success">For more information, see the chapter: [Controlling an illuminant](https://wiki.coraye.com/books/coraye-manual-en/page/control-of-an-illuminant "Control of an illuminant")</p>

<p class="callout success">For more information, see chapter: [Capturing a color](https://wiki.coraye.com/books/coraye-manual-en/page/capture-a-color "Capture a color")</p>

<span data-slate-fragment="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">Or directly load a .sp (light sample) or .spc (color sample) file:</span>

[![image-1628530720795.png](https://wiki.coraye.com/uploads/images/gallery/2021-08/scaled-1680-/image-1628530720795.png)](https://wiki.coraye.com/uploads/images/gallery/2021-08/image-1628530720795.png)

[![image-1628530738738.png](https://wiki.coraye.com/uploads/images/gallery/2021-08/scaled-1680-/image-1628530738738.png)](https://wiki.coraye.com/uploads/images/gallery/2021-08/image-1628530738738.png)

<span data-slate-fragment="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">The samples will be added in the left column. In the main window of Coraye  
Click on the "Spectral viewer" pictogram.</span>

[![image-1628530770002.png](https://wiki.coraye.com/uploads/images/gallery/2021-08/scaled-1680-/image-1628530770002.png)](https://wiki.coraye.com/uploads/images/gallery/2021-08/image-1628530770002.png)

<span class="text-4505230f--TextH400-3033861f--textContentFamily-49a318e1"><span data-key="d6dbe9fbb6d1419c89a473674724b536">Then click on the small square to the right of the sample name.  
The spectral curve will be displayed</span></span>

<div><div><div><div data-slate-fragment="JTdCJTIyb2JqZWN0JTIyJTNBJTIyZG9jdW1lbnQlMjIlMkMlMjJkYXRhJTIyJTNBJTdCJTdEJTJDJTIybm9kZXMlMjIlM0ElNUIlN0IlMjJvYmplY3QlMjIlM0ElMjJibG9jayUyMiUyQyUyMnR5cGUlMjIlM0ElMjJwYXJhZ3JhcGglMjIlMkMlMjJpc1ZvaWQlMjIlM0FmYWxzZSUyQyUyMmRhdGElMjIlM0ElN0IlN0QlMkMlMjJub2RlcyUyMiUzQSU1QiU3QiUyMm9iamVjdCUyMiUzQSUyMnRleHQlMjIlMkMlMjJsZWF2ZXMlMjIlM0ElNUIlN0IlMjJvYmplY3QlMjIlM0ElMjJsZWFmJTIyJTJDJTIydGV4dCUyMiUzQSUyMkNsaXF1ZXolMjBlbnN1aXRlJTIwc3VyJTIwbGUlMjBwZXRpdCUyMGNhcnIlQzMlQTklMjAlQzMlQTAlMjBkcm9pdGUlMjBkdSUyMG5vbSUyMGRlJTIwbCclQzMlQTljaGFudGlsbG9uLiUyMExhJTIwY291cmJlJTIwc3BlY3RyYWxlJTIwc2VyYSUyMGFmZmljaCVDMyVBOWUlMjIlMkMlMjJtYXJrcyUyMiUzQSU1QiU1RCU3RCU1RCU3RCU1RCU3RCUyQyU3QiUyMm9iamVjdCUyMiUzQSUyMmJsb2NrJTIyJTJDJTIydHlwZSUyMiUzQSUyMnBhcmFncmFwaCUyMiUyQyUyMmlzVm9pZCUyMiUzQWZhbHNlJTJDJTIyZGF0YSUyMiUzQSU3QiU3RCUyQyUyMm5vZGVzJTIyJTNBJTVCJTdCJTIyb2JqZWN0JTIyJTNBJTIydGV4dCUyMiUyQyUyMmxlYXZlcyUyMiUzQSU1QiU3QiUyMm9iamVjdCUyMiUzQSUyMmxlYWYlMjIlMkMlMjJ0ZXh0JTIyJTNBJTIyRXhlbXBsZSUzQSUyMGxhbXBlJTIwJUMzJUEwJTIwdHViZSUyMEZsdW8uJTIyJTJDJTIybWFya3MlMjIlM0ElNUIlNUQlN0QlNUQlN0QlNUQlN0QlNUQlN0Q="><div data-slate-fragment="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"><div data-slate-fragment="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"><div><div><div><div>Example: fluorescent tube lamp.<svg class="icon-7f6730be--text-3f89f380" fill="currentColor" height="1em" preserveaspectratio="xMidYMid meet" stroke="none" viewbox="0 0 24 24" width="1em" xmlns="http://www.w3.org/2000/svg"></svg></div></div></div></div></div></div></div></div></div></div>[![image-1628530803562.png](https://wiki.coraye.com/uploads/images/gallery/2021-08/scaled-1680-/image-1628530803562.png)](https://wiki.coraye.com/uploads/images/gallery/2021-08/image-1628530803562.png)

<span data-slate-fragment="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">Example: natural daylight</span>

[![image-1628530826686.png](https://wiki.coraye.com/uploads/images/gallery/2021-08/scaled-1680-/image-1628530826686.png)](https://wiki.coraye.com/uploads/images/gallery/2021-08/image-1628530826686.png)

**<span class="text-4505230f--TextH400-3033861f--textContentFamily-49a318e1">Spectral Viewer is also capable of displaying reflectance curves for color samples.</span>**

<div><div><div><div data-slate-fragment="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"><div data-slate-fragment="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"><div data-slate-fragment="JTdCJTIyb2JqZWN0JTIyJTNBJTIyZG9jdW1lbnQlMjIlMkMlMjJkYXRhJTIyJTNBJTdCJTdEJTJDJTIybm9kZXMlMjIlM0ElNUIlN0IlMjJvYmplY3QlMjIlM0ElMjJibG9jayUyMiUyQyUyMnR5cGUlMjIlM0ElMjJwYXJhZ3JhcGglMjIlMkMlMjJpc1ZvaWQlMjIlM0FmYWxzZSUyQyUyMmRhdGElMjIlM0ElN0IlN0QlMkMlMjJub2RlcyUyMiUzQSU1QiU3QiUyMm9iamVjdCUyMiUzQSUyMnRleHQlMjIlMkMlMjJsZWF2ZXMlMjIlM0ElNUIlN0IlMjJvYmplY3QlMjIlM0ElMjJsZWFmJTIyJTJDJTIydGV4dCUyMiUzQSUyMlNwZWN0cmFsJTIwVmlld2VyJTIwZXN0JTIwJUMzJUE5Z2FsZW1lbnQlMjBjYXBhYmxlJTIwZCdhZmZpY2hlciUyMGRlcyUyMGNvdXJiZXMlMjBkZSUyMHIlQzMlQTlmbGVjdGFuY2UlMjBwb3VyJTIwZGVzJTIwJUMzJUE5Y2hhbnRpbGxvbnMlMjBkZSUyMGNvdWxldXIuJTIwJTIyJTJDJTIybWFya3MlMjIlM0ElNUIlNUQlN0QlNUQlN0QlNUQlN0QlMkMlN0IlMjJvYmplY3QlMjIlM0ElMjJibG9jayUyMiUyQyUyMnR5cGUlMjIlM0ElMjJwYXJhZ3JhcGglMjIlMkMlMjJpc1ZvaWQlMjIlM0FmYWxzZSUyQyUyMmRhdGElMjIlM0ElN0IlN0QlMkMlMjJub2RlcyUyMiUzQSU1QiU3QiUyMm9iamVjdCUyMiUzQSUyMnRleHQlMjIlMkMlMjJsZWF2ZXMlMjIlM0ElNUIlN0IlMjJvYmplY3QlMjIlM0ElMjJsZWFmJTIyJTJDJTIydGV4dCUyMiUzQSUyMkxhJTIwY291bGV1ciUyMGRlJTIwbGElMjBjb3VyYmUlMjBlc3QlMjBsYSUyMGNvdWxldXIlMjBjb3JyZXNwb25kYW50JTIwJUMzJUEwJTIwbCclQzMlQTljaGFudGlsbG9uJTIwZGUlMjBjb3VsZXVyLiUyMiUyQyUyMm1hcmtzJTIyJTNBJTVCJTVEJTdEJTVEJTdEJTVEJTdEJTVEJTdE"><div><div><div><div>The color of the curve is the color corresponding to the color sample.</div><div></div></div></div></div></div></div></div></div></div></div>[![image-1628530862373.png](https://wiki.coraye.com/uploads/images/gallery/2021-08/scaled-1680-/image-1628530862373.png)](https://wiki.coraye.com/uploads/images/gallery/2021-08/image-1628530862373.png)

<div><div><div>---

</div></div></div>#### <span data-slate-fragment="JTdCJTIyb2JqZWN0JTIyJTNBJTIyZG9jdW1lbnQlMjIlMkMlMjJkYXRhJTIyJTNBJTdCJTdEJTJDJTIybm9kZXMlMjIlM0ElNUIlN0IlMjJvYmplY3QlMjIlM0ElMjJibG9jayUyMiUyQyUyMnR5cGUlMjIlM0ElMjJoZWFkaW5nLTIlMjIlMkMlMjJpc1ZvaWQlMjIlM0FmYWxzZSUyQyUyMmRhdGElMjIlM0ElN0IlN0QlMkMlMjJub2RlcyUyMiUzQSU1QiU3QiUyMm9iamVjdCUyMiUzQSUyMnRleHQlMjIlMkMlMjJsZWF2ZXMlMjIlM0ElNUIlN0IlMjJvYmplY3QlMjIlM0ElMjJsZWFmJTIyJTJDJTIydGV4dCUyMiUzQSUyMlBlcnNvbm5hbGlzZXolMjB2b3MlMjBjb3VyYmVzJTIyJTJDJTIybWFya3MlMjIlM0ElNUIlNUQlN0QlNUQlN0QlNUQlN0QlNUQlN0Q=">Customize your curves</span>

[![image-1628530895790.png](https://wiki.coraye.com/uploads/images/gallery/2021-08/scaled-1680-/image-1628530895790.png)](https://wiki.coraye.com/uploads/images/gallery/2021-08/image-1628530895790.png)

<div><div><div>---

</div></div></div>#### <span data-offset-key="853b8eb7f2cf4d609c017b3483f0f5bb:1" data-slate-fragment="JTdCJTIyb2JqZWN0JTIyJTNBJTIyZG9jdW1lbnQlMjIlMkMlMjJkYXRhJTIyJTNBJTdCJTdEJTJDJTIybm9kZXMlMjIlM0ElNUIlN0IlMjJvYmplY3QlMjIlM0ElMjJibG9jayUyMiUyQyUyMnR5cGUlMjIlM0ElMjJoZWFkaW5nLTIlMjIlMkMlMjJpc1ZvaWQlMjIlM0FmYWxzZSUyQyUyMmRhdGElMjIlM0ElN0IlN0QlMkMlMjJub2RlcyUyMiUzQSU1QiU3QiUyMm9iamVjdCUyMiUzQSUyMnRleHQlMjIlMkMlMjJsZWF2ZXMlMjIlM0ElNUIlN0IlMjJvYmplY3QlMjIlM0ElMjJsZWFmJTIyJTJDJTIydGV4dCUyMiUzQSUyMk0lQzMlQTl0YW1lcmlzbWUlMjIlMkMlMjJtYXJrcyUyMiUzQSU1QiU1RCU3RCU1RCU3RCU1RCU3RCU1RCU3RA==">Metamerism</span>

<span data-offset-key="853b8eb7f2cf4d609c017b3483f0f5bb:1" data-slate-fragment="JTdCJTIyb2JqZWN0JTIyJTNBJTIyZG9jdW1lbnQlMjIlMkMlMjJkYXRhJTIyJTNBJTdCJTdEJTJDJTIybm9kZXMlMjIlM0ElNUIlN0IlMjJvYmplY3QlMjIlM0ElMjJibG9jayUyMiUyQyUyMnR5cGUlMjIlM0ElMjJoZWFkaW5nLTIlMjIlMkMlMjJpc1ZvaWQlMjIlM0FmYWxzZSUyQyUyMmRhdGElMjIlM0ElN0IlN0QlMkMlMjJub2RlcyUyMiUzQSU1QiU3QiUyMm9iamVjdCUyMiUzQSUyMnRleHQlMjIlMkMlMjJsZWF2ZXMlMjIlM0ElNUIlN0IlMjJvYmplY3QlMjIlM0ElMjJsZWFmJTIyJTJDJTIydGV4dCUyMiUzQSUyMk0lQzMlQTl0YW1lcmlzbWUlMjIlMkMlMjJtYXJrcyUyMiUzQSU1QiU1RCU3RCU1RCU3RCU1RCU3RCU1RCU3RA==">By comparing the reflectance curve of a measured color sample with the spectral curve of an illuminant, we can get an idea of what the influence of an illuminant on a color sample will be. (Metamerism)  
You can also use the cursor on the scale to compare the curves with each other.</span>

[![image-1628530984999.png](https://wiki.coraye.com/uploads/images/gallery/2021-08/scaled-1680-/image-1628530984999.png)](https://wiki.coraye.com/uploads/images/gallery/2021-08/image-1628530984999.png)

<p class="callout info"><span data-slate-fragment="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">In colorimetry, metamery is a perception of colors that merge with different spectral power distributions (without correspondence). Colors that correspond to this method are called metamers.</span></p>

<span data-slate-fragment="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">When you hover over the curves, you get the values in mW / (m2.nm)</span>

[![image-1628531032213.png](https://wiki.coraye.com/uploads/images/gallery/2021-08/scaled-1680-/image-1628531032213.png)](https://wiki.coraye.com/uploads/images/gallery/2021-08/image-1628531032213.png)

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