⒈ working length:
Different uses of endoscopic products, the working length is not the same, in general:
① laryngoscope working length ≥ 180mm;
② sinus mirror working length ≥ 175mm;
The outer diameter of the mirror tube:
Different uses ( adults and children), the outer diameter size is not the same. Adults and children) endoscopic products, the outer diameter size is not the same, in general:
① laryngoscope outer diameter size Φ5mm, Φ8mm, Φ10mm;
② sinus mirror outer diameter size Φ3mm, Φ4mm;
3 Optical performance:
① Field of view: sinus mirror, cystoscopy, cystoscopy, proctoscopy, amnioscopy of the Field of view angle can not be less than 60 °, otherwise it affects the observation range.
②Angle of view: the angle of view is generally divided into anterior view (00 °, 12 °), oblique view (30 °, 45 °), lateral view (70 °, 90 °).
③Resolution: resolution is an important optical index of endoscope, ordinary endoscope should generally be greater than 9.92Lp/mm (L=10mm).
Sunglasses illumination: mainly the uniformity of illumination, such as illumination can not fill the field of view, the periphery is blurred, which in turn affects the field of view.
Be careful about the mechanical properties:
① Sealing: the sealing of endoscopes is related to the quality of imaging, if the sealing is not good, it is easy to seepage, destroying the optical system and affecting the observation. The water-through valve mirror sheath and the cone of the cystoscope should be tightly fitted, and the water seepage should be no more than 5 drops in 1min, otherwise it is easy to leak and affect the operation if it is not well fitted.
② Surface roughness
③ Firmness of the connection parts
Choice of eyepiece cover outer diameter size is related to the coordination with the CCD camera system, the international common size diameter of 32mm.
Borrow insulation performance:
Mainly electronic endoscopes, the relevant electrical isolation parts of the insulating structure, such as eyepiece cover mated to the CCD camera, Cold light source interface, light guide cable and other related accessories insulation performance.
The thermal insulation properties:
In medical endoscopes, since the endoscope is an invasive instrument, in order to avoid injury to the human body while the endoscope is in operation, it is now common to use a cold light source, with an infrared filter at the light outlet, to maximize the infrared light output.
Industrial endoscopes are mainly used for. Pipe diameter of 60-400mm municipal pipelines, residential homes, commercial buildings, factories and plants and other indoor pipeline video inspection. The system consists of fiberglass rigid actuator cable, wire frame, HD camera, controller.
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