The sinusoscope and the diagnosis and treatment instrument are used for human sinuses, nasal cavity and nasopharyngeal examination and operation.
The technical parameters of sinusoscopy are as follows:
| No. | Part name | Technical parameter |
| 1 | Maximum outer diameter of insertion part (endoscope) | Φ2.7mm Φ3.0mm Φ4.0mm |
| 2 | Endoscope working length | 140mm 175mm |
| 3 | Field of view angle | 55° 65° 90° |
| 4 | Viewing angle | 0° 30° 70° |
| 5 | Designed optical working distance | 20mm |
| 6 | Depth of field scope | non |
| 7 | Center angle resolution | ra(d)3.267 C/° |
| 8 | Color rendering index | Using the spectrum of the A standard illuminator specified by ISO10526:1999 CIE S005, after transmission through the illumination path and imaging system, the color rendering index of the output spectrum Ra≥80% Using the spectrum of the D65 standard illuminator specified by ISO10526:1999 CIE S005, after transmission through the illumination path and imaging system, the color rendering index of the output spectrum Ra≥80% |
| 9 | Light energy transfer rate | DM≤1300 cd/(m2. Im) |
| 10 | Lighting Mirror Body Light Effect Integrated mirror light effect Integrated edge mirror effect Unit Relative Distortion | The shape of the working field of view at the working distance of the sinusoscope is defined as the plane perpendicular to the visual axis At the 90% field of view of the maximum entrance pupil field of view under this field of view shape, the light effect of the illumination mirror body ILeR≥0.240 At the 90% field of view of the maximum entrance pupil field of view under this field of view shape, the comprehensive mirror body light effect SLeR≥0.400 At the 90% field of view of the maximum entrance pupil field of view under this field of view shape, the comprehensive edge light effect SLe-z≥0.120 The amount of control for the relative distortion per unit in this field of view shape <25% |
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