Laser Pointers and the Human Eye<subtitle>A Clinicopathologic Study</subtitle>

The safety of laser pointers: myths and realities.

Laser Pointers as Collaborative Pointing Devices

Single Display Groupware (SDG) is a research area that focuses on providing collaborative computing environments. Traditionally, most hardware platforms for SDG support only one person interacting at any given time, which limits collaboration. In this paper, we present laser pointers as input devices that can provide concurrent input streams ideally required to the SDG environment. First, we di...

Health risks from the use of laser pointers.

Since first being developed in 1960, the LASER, an acronym for Light Amplification Stimulated Emission of Radiation, has become a commonplace device in industry, commerce, entertainment and medicine. Laser pointers – the hand-held, pen-like devices that project a beam of laser light – are rapidly replacing the traditional wooden pointers used by lecturers during presentations. However, these po...

Tracking Multiple Laser Pointers for Large Screen Interaction

We describe a new technique for tracking and identifying multiple laser pointers simultaneously in a large screen collaborative environment. Our method is based on using a video camera to track and decode the laser pointers. We use an asynchronous serial bit stream created by blinking the laser light to encode the identity of each laser. Our goal is to use multiple laser tracking in large scree...

Direct Interaction with Large-Scale Display Systems using Laser Pointers

Existing large scale display systems generally adopt an indirect approach to user interaction. An alternative to the standard desktop-oriented devices, such as the computer mouse to control large wall-sized displays, can be considered in improving user-efficiency. By using an infrared laser pointer and an infrared tracking device, a more direct interaction with the large display can be achieved...