Project Description


The ShadowLamp is a lamp concept supporting controllable shadow casting for displaying ambient information. The concept uses electrochromic displays to mask a light source and control the projected shadows. We implemented a prototype in a hexagon frame with six separately controlled LEDs compartmentalized to cast shadows in 60° angles. Alongside the LEDs, each compartment contains an electrochromic display for shadow control. As a use case, we fabricated displays to support a children’s book. The changing shadows adding an ambient element to the story’s progress. The displays and LEDs are controlled by a Bluetooth connected Android application running on a smartphone.
Published as: Walther Jensen, Markus Löchtefeld, and Hendrik Knoche. 2019. ShadowLamp: An Ambient Display with Controllable Shadow Projection using Electrochromic Materials.. In Extended Abstracts of the 2019 CHI Conference on Human Factors in Computing Systems (CHI EA ’19). ACM.

Deliverable  D4.1
Title  1st generation prototypes with current EC components
Dissemination  Public