ahmad24
عدد المساهمات : 95
تاريخ التسجيل : 16/01/2010
العمر : 38
 |  موضوع: Cold Light Sources  السبت فبراير 13, 2010 4:13 am | |
| Cold Light Sources
Abbreviation / other names
Light source
What does it do
High intensity light used in conjunction with endoscopes, rigid scopes, headlamps and operating microscopes etc.
Physiology
Cold light sources are normally used to illuminate a specific work area during surgery or medical examinations. It is important that the light is as near in colour to natural light so doctors are able to detect abnormal colourations of the skin and tissue. It is also important that the light does not heat the tissue
How it works
The high intensity light source consists of a power supply, cooling fan, brightness controls, lamp life indicator and a spare lamp to enable procedures to be finished if the primary lamp fails. Filters are also employed to reduce the transmission of excessive heat to the operating site. This is why it is called ‘Cold Light’. The two main types of lamps used are xenon arc and halogen. Some xenon lamps have a useable life of only 500 hours.
The light is channelled to the required area via a flexible fibre optic light guide, made from tightly bundled glass fibres. This concentrates the light and allows the light to be easily directed to where it is required | |
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هيبة ملك
عدد المساهمات : 17
تاريخ التسجيل : 15/02/2010
العمر : 35
| | موضوع: رد: Cold Light Sources الأحد فبراير 28, 2010 5:41 am | |
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يعطيكـ 1000 عافيه الموضوع جداً شيق .. تقبل مروري ..  .. هيبة ملك | |
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