TW-0E-1 Lens Focus Tester Introduction: Measuring the focal length of convex lens and concave lens with lens imaging principle is a major optical physics experiment in science and engineering universities. At present, there are some shortcomings in the universal light fixture base: large volume, easy to rust, inflexible movement, and it must be tested in a dark room. It brings inconvenience to the measurement. Therefore, the light source and object screen of the original optical holder have been greatly improved. A new type of lens focal length tester has been successfully developed and has been put into mass production. The instrument uses high-quality aluminum alloy as its base and accessories, and uses high-strength LED as its light source. After significant improvement, the new instrument has the following outstanding advantages: characteristic: 1. Convenient adjustment, small size, light weight, no rust, no wear. 2. The scale line and ruler are on the same plane, without visual error, and the measurement accuracy is high. 3. Low power consumption, only 3V power supply is required. 4. Optical experiments can be conducted in a bright laboratory. The new lens focal length measuring instrument is an ideal high-quality optical experimental instrument in the physical experiment teaching of various science and engineering universities and technical secondary schools. With this instrument, the following experiments can be completed: 1. Roughly measure the focal length of convex lens. 2. Measure the focal length of convex lens with autocollimation method and secondary imaging method. 3. Use the measured focus value of convex lens to measure the focus of concave lens (optional). Technical parameters: Light tool holder: 80.0cm long, division value 1mm. (The length can be customized according to customer requirements) Light source: high brightness LED, working voltage 3V. Lens: convex lens focal length is about 8cm, and concave lens focal length is about - 18cm. Base weight: 2.5Kg.
Introduction: Measuring the focal length of convex lens and concave lens with lens imaging principle is a major optical physics experiment in science and engineering universities. At present, there are some shortcomings in the universal light fixture base: large volume, easy to rust, inflexible movement, and it must be tested in a dark room. It brings inconvenience to the measurement. Therefore, the light source and object screen of the original optical holder have been greatly improved. A new type of lens focal length tester has been successfully developed and has been put into mass production. The instrument uses high-quality aluminum alloy as its base and accessories, and uses high-strength LED as its light source. After significant improvement, the new instrument has the following outstanding advantages:
