---
title: "Filtered Light (238)"
created: 2026-07-01
updated: 2026-07-01
type: concept
status: compiled
namespace: pattern-language
pattern_number: 238
pattern_name: "Filtered Light"
source_repository: https://github.com/zenodotus280/apl-md
source_url: https://github.com/zenodotus280/apl-md/blob/master/Patterns/Filtered%20Light%20%28238%29.md
license_note: Non-commercial reuse with attribution; see namespace README and source LICENSE.md.
related_patterns:
  - "Natural Doors and Windows (221)"
  - "Deep Reveals (223)"
  - "Climbing Plants (246)"
  - "Canvas Roofs (244)"
  - "Warm Colors (250)"
  - "Small Panes (239)"
---

# Filtered Light (238)

> Source pattern from the abridged `apl-md` corpus. Use as a design reference and constraint seed; do not treat as commercial-clean training data.

### Problem
>Light filtered through leaves, or tracery, is wonderful. But why?

### Solution
>Where the edge of a window or the overhanging eave of a roof is silhouetted against the sky, make a rich, detailed tapestry of light and dark, to break up the light and soften it.

### Related Patterns
... even if the windows are beautifully placed, glare can still be a problem - [[Natural Doors and Windows (221)]]. The softness of the light, in and around the window, makes an enormous difference to the room inside. The shape of the frames can do a part of it - [[Deep Reveals (223)]] - but it still needs additional help.

You can do this, most easily, with climbing plants trained to climb around the outside of the window - [[Climbing Plants (246)]]. If there are no plants, you can also do it beautifully with simple canvas awnings [[Canvas Roofs (244)]], perhaps colored [[Warm Colors (250)]]. You can also help to filter light by making the panes smaller, more delicate, and more elaborate high in the window where the light is strong - [[Small Panes (239)]] ...

---

> [!cite]- Alexander, Christopher. _A Pattern Language: Towns, Buildings, Construction_. Oxford University Press, 1977, p. 1105.
> #APL/confidence/medium
>
> #APL/Construction-Patterns/Interior-Details