New Generation High-Frequency Medical X-Ray Film Viewer
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| Author: Liu Yuxuan ( Sichuan University) |
| Along with the high speed improvement of the light-source manufacturing technology, a new generation |
| High-Frequency medical X-ray film viewer comes into being. Comparing with traditional viewer, it improved |
| significantly in appearance, comfortability, light-source quality, product life, and irradiancy mechanism. |
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| As of light-source, the new viewer takes use of high color-temperature light-source, which is more |
| suitable for viewing medical film. The new light-source applies the latest CCFL technology. |
| Color-temperature exceeds 8600 K, and frequency of the CCFL light-source exceeds 50,000 times per |
| second,much higher than traditional daylightlamp’s 50 Hz frequency. In this case, even if doctor keeps |
| watching for a long time, he won’t feel tired in his eyes. Therefore, the new viewer could protect doctor’s |
| eyes in great extent. |
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| As of light evenness, the new viewer takes advantage of excellent light route transition design. Light is |
| reflected for many times, and then turned into parallel light, project through acrylic panel, becomes area |
| light source. Accordingly, the light comes out looks quite evenly and exquisite, overcomes shortcoming of |
| uneven light that all traditional viewer had, which was caused by the fan-shaped light came directly from |
| daylightlamp. |
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| As of product life, the new CCFL can be used for more than 20,000 hours, which is 8 times of traditional |
| daylight lamp. At the same time, since CCFL’s lightening mechanism is turning DC 12V into 750V,via |
| High-frequency inverter, which substitute traditional daylight lamp’s ballast and starter lightening method. |
| The stability and working life is significantly increased. At the meantime, it’s power consumption is only |
| one third of traditional viewer. |
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| As of appearance, the new generation viewer takes use of latest TFT Liquid Crystal Display technology, |
| which makes the thickness of the viewer only 2.5 cm, far less than traditional viewer’s thickness 12-14 cm. |
| The overall appearance looks quite modern, portable and easy for installation. And also leaves space for |
| installation of the display on the diagnostic desk, when the PACS comes into operation in the future. |
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| In addition, the new viewer also makes specific improvement on film holder. The traditional viewer took |
| use of spring and roller film holder, when the spring was getting loose, film always dropped. The new |
| viewer takes roller self-lock film holder, which will auto self-lock when the film falls, and makes holding |
| and extracting film easy and reliable. Besides, the new viewer is also preceding the traditional viewer in |
| noise and heat. It doesn’t have the noise coming from ballast. And heat of CCFL is much lower than |
| traditional daylight lamp. |
