What is the function of an auto continuous zoom video microscope?
Stereoscopic microscopes are widely used in biological anatomy, microbial observation, microsurgery, mineral structure observation, and industrial production. Industry is mainly used in the production, assembly, and quality inspection of fine components such as electronic manufacturing, semiconductors, and watches, and is an essential process equipment for some processes. Although stereomicroscopes allow for binocular observation and continuous magnification, they still tend to cause fatigue in operators due to their strong sense of three dimensionality. With the emergence and continuous cost reduction of CCD and CMOS image sensors, single tube continuous zoom video microscopes have emerged. The video monocular microscope has developed rapidly due to its advantages of wide field of view, intuitive and realistic, simple operation, and less fatigue for operators. There is a trend in the production line to replace binocular observation with stereomicroscopes.
Continuous zoom video microscope (hereinafter referred to as video microscope) originated from binocular observation stereomicroscope. The optical system mainly consists of three parts: a continuous zoom objective lens, an eyepiece lens, and an additional front objective lens, as shown in Figure 1. The continuous zoom objective belongs to the low magnification objective range and is a key component of video microscopes. The observed object is imaged onto the photosensitive surface of a CCD (or CMOS) through an optical system. The image sensor converts the light signal into an electrical signal (video signal), which is then displayed on a CRT or LCD screen through a television system. Figure 2 shows the DT-10 single tube continuous zoom video microscope developed in collaboration between the Guidian Electromechanical Integration Research Institute and Wuzhou Aote Optoelectronic Instrument Company. Under the condition of no front objective lens and 1 x eyepiece, the zoom ratio M=1:6.3, 0.7-4.5 x continuous zoom. After connecting to a 1/3-inch CCD through the C interface, the microscopic image is displayed on the CLD. The optical system also requires the use of adjustable intensity LED coaxial lighting or circular LED array external lighting.
