This paper presents an optical design of a dental light that meets the regulation of ISO 9680. The designed light pattern on the target is an elliptical shape with uniform illumination. Moreover, the real module contains four optical modules, and is operated at 9 W and performs a maximum illuminance of 42,010 lx. In order to reduce the correlated color temperature (CCT) variation, we replace the original white light-emitting diode with a new one, which has an extremely low angular CCT derivation. Accordingly, the CCT variation is reduced to 232 K from 1323 K of the original module.

Travelling on public transport can often be an unengaging experience. We see an opportunity to enrich the public transport experience by utilizing digital play in this space, and in response explore the design of a digital game for trams. Cart-Load-O-Fun acts as a research vehicle to understand how games for public transport should be designed. We present findings as a result of a study of passengers playing the game. We hope that these findings will help designers who aim to facilitate play on public transport to evoke playfulness in the users of these spaces, ultimately allowing for a more engaging experience.

Exertion games, digital games involving physical effort, are becoming more popular. Although some exertion games support social experiences, they rarely consider or support body contact. We believe overlooking body contact as part of social play experiences limits opportunities to design engaging exertion games. To explore this opportunity, we present Bubble Popper, an exertion game that considers and facilitates body contact. Bubble Popper, which uses very simple technology, also demonstrates that considering and facilitating body contact can be achieved without the need to sense body contact. Through reflecting on our design and analyzing observations of play, we are able to articulate what impact physical space layout in relation to digital game elements, and physical disparity between input and digital display can have on body contact. Our results aid game designers in creating engaging exertion games by guiding them when considering body contact, ultimately helping players benefit more from engaging exertion games.