K Laser Technology, Inc.

Hsin-Chu Liu

Mang Ou-Yang

I-Pen Chien

Shin-Gwo Shiue

Jim Chung

Shin Gwo Shiue

Kevin Sh Kuo

Chun-Lung Lai

Shin-Maio Tseng

The present invention provides a continuous-zoom imaging device of an interferometer. Reflected lights of a reference plane and a test plane interfere with each other to generate an interference pattern. A collimation device converts a parallel light of the interference pattern into a convergent light. An optical path adjustment means guides the light to a polarizing beam splitter. A continuous-zoom device adjusts the magnification ratio of the interference pattern on the imaging passageway and to output an object image, which is then imaged on a charge-coupled device. The present invention can improve the quality of the interference pattern without using any rotating diffuser, and thus has the characteristics of reduced number of components, lowered cost, and shrunk volume. Besides, the present invention can utilize a joint device to connect the continuous-zoom device and an attenuator so as to achieve automatic light adjustment and convenient operation.

Continuous-zoom imaging device of interferometer

The present invention proposes a reflective type liquid crystal projection system, which comprises an incident light source providing an S-polarization light beam or a P-polarization light beam as the incident light beam. A polarization of color-splitting device having a first polarization of color splitter and a second polarization of color splitter is used to split the incident light beam of three primary colors into two sets of light beams, which respectively penetrate through or are reflected. The two sets of light beams split by the first polarization of color splitter are reflected by two reflective mirrors, traverse two polarizing plates arranged between the reflective mirrors and the second polarization of color splitter, and are then incident on the second polarization of color splitter. At least a retarder is arranged between the reflective mirrors and the polarization of color-splitting device. The split light beams of three primary colors are assembled into an output light beam by a color-combining device comprising three PBS's. Finally, the output light beam is projected to form the image via a projection lens.

Reflective type liquid crystal projection system

Growing community of inventors

Hsinchu, Taiwan

Hsin-Chu Liu