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Main technical parameters

(1) Focal length of objective lens (theoretical value) F= 500mm

(2) Effective aperture: φ 80mm

(3) Field of view: 3°20 '

(4) Lighting bulb: 6V LED

(5) Resolution: 1.8"

(6) Overall size: 570× φ 90mm

(7) Weight: about 0.6kg

Instrument use:

Parallel light tube is obtained through it from the infinite distance of parallel light beam, this light beam is called parallel light. It is an important tool for assembling and adjusting optical instruments, and also an important part of optical measuring instruments. With different demarcation plates, micrometer lenses, or microscope systems, it is possible to measure the focal length, discrimination, and other imaging qualities of the lens group. The attached adjusted plane reflector is fixed on the workpiece with the moving straight line, and the moving workpiece can be checked by observing through the Gaussian eyepiece on the light tube with the Gaussian autocollimation lens attached to the light tube.

Working principle:

Figure 1 shows the working principle of pgF500-80-1 parallel optical tube. The cross partition board 2, which serves as the inspection reference target, is uniformly illuminated by light source 1. If the cross splitter 2 is located exactly in the focal plane of objective 3, then the light passing through the cross splitter 2 is refracted by objective 3 as a parallel beam, which is also equivalent to the beam from the target at infinity.