Portal de Periódicos da CAPES

<title>Design and characterization of an aspherical zoom lens for projection TV</title>

1995; SPIE; Volume: 2407; Linguagem: Inglês

10.1117/12.205903

1996-756X

Luh-Hwa Chen, Wein-Chyi Horng, Ryh-Huang Chen, Chie-Ching Lin,

Surface Roughness and Optical Measurements

By using aspherical lens design is one of the keys to reduce the size and weight for a compact lens applied in Projection TV. The other approach is to use plastic lenses instead of glass lenses to reduce weight and cost. In this work, we describe the optical design of projection zoom objective by using aspherical surface and plastic-glass hybrid lens sets. Our aspherical design can significantly reduce dimensional scale 30% off comparing with spherical design. We also calculate the compensation of focus shift owing to the changes of temperature and humidity for plastic lenses. Results of this work and other questions raised by this attempt will be discussed in this paper.