Holographic filter applied to LCD projector for improvement of laser pointer presentation

摘要

Abstract: This paper presents the concept and feasibilitydemonstration of an improvement of the LCD projectoroptics. An innovative concept of integration of anholographic filter in the optical head allows for laserpointer tracking. The filter retrieves the positioninginformation of the pointer on a PSD (Position SensitiveDevice). The detector is interfaced with the LCD matrixin order to project a pattern on the screen. Severalsoftware options can be implemented for remote controlof the slide show. We present the holographic geometryoptimization, the experimental recording, and results.!6