The design challenge of an optical system is not limited to the optical design itself and its performance in nominal conditions; it extends to the realisation of a system which includes tolerancing and manufacturability as well as meeting system requirements such power consumption, heat dissipation, mass, cost constraints and timescales. In this presentation, optical designs for different applications ranging from satellite optical imager to Augmented Reality Displays are presented to illustrate the different challenges that an optical design needs to address. Augmented Reality will prove to be a very useful tool in our everyday lives; it brings elements of the virtual world into the real world, enhancing what we see, hear, and feel. With this comes a high demand for compact, light, affordable and high-quality displays.
A description of an optical relay subsystem used in a high resolution earth observation satellite imager is presented. Tolerance and thermal analysis showed that very tight tolerances are required to achieve diffraction limited performance. The alignment technique and verification of the build of different components are presented. Typical results of the alignment process together with predicted performance are reported. Optical characterisation of the relay subsystem in terms of wavefront analysis is described. To achieve diffraction limited performance an optical correction method was developed and implemented. The successful practical implementation of wavefront correction to achieve diffraction limited relay lens system is demonstrated.
This paper reviews the design process underlying development of a second generation multi-photon laser scanning microscope (MPLSM) system and the methods used to characterize its performance. The purpose is to show how each of several elements of the design present complex design choices which must be resolved in the overall interests of instrument performance combined with ease of use in difficult experiments involving live samples. The paper is intended to stimulate discussion of how close we are to making MPLSM accessible as a routine microscopy method, as opposed to a specialized, user engineered technique. The issue of detector design in MPLSM poses the well known problem of how to collect as much as possible of the emitted fluorescence as its escapes from the sample. The challenge in design of a commercial system is to combine the highest possible detection sensitivity with the requirements of laser safety, ease of use and adaptability to different microscope platforms. This paper will present a 'hybrid' approach to MPLSM detection where the user can select one of several detection strategies according to the nature of the particular sample. Proposals will be presented how detector performance can be compared between systems of different design.