In order to circumvent the fact that only one observer can view the image from a stereoscopic microscope, an attachment
was devised for displaying the 3D microscopic image on a large LCD monitor for viewing by multiple observers in real
time. The principle of operation, design, fabrication, and performance are presented, along with tolerance measurements
relating to the properties of the cellophane half-wave plate used in the design.
An ordinary digital camcorder was converted to a three-dimensional (3-D) camcorder by means of an attachment. The 3-D image can be viewed with the built-in monitor, or on a laptop computer display, or on a TV screen. The principle of operation is based on the manipulation of polarized light. Playback of the 3-D image is simple, and the camcorder attachment is small, rugged, and lightweight.
A novel 3D camera named Axi-vision camera was developed. IT can acquire both color and distance information of objects. An intensity-modulated light illuminates objects and the camera with an ultra-fast shutter captures the light reflected from the scene. The distance information is obtained from two images of the same scene taken under linearly increasing and decreasing illuminations. The camera does not require scanning, multiple camera units, or complicated computations. It is possible to acquire distance information for each pixel of a TV image at real time. The operational features and technical specifications of the camera were investigated. The application to TV program production, such as replacing the image of an object at a particular distance by another, was demonstrated. A new 3D display system is also proposed, developed and demonstrated.
A step-frequency fault locator was constructed as a new diagnostic tool for integrated optics devices. The wavelength of the light was swept stepwise from 1.5 to 1.6 μm in steps less than 1 nm. The image of the target was processed using a neural network algorithm. Detailed comparisons between the results using the neural network algorithm and FFT algorithm have been presented. Obtained resolution
was of the order of microns. The overall dimensions were reduced to 7 x l0 x 2 in. by replacing bulk optic elements with fiber-optic elements.