An optical apparatus is provided with a zoom optical system. The present invention also provides a diagnostic method for lipidosis and diseases related thereto, including detecting and above in a sample collected from a mammal, and making a diagnosis with the quantitative ratio of the two as the index. The apparatus detects battery temperature and includes a controller that will control charger voltage and current as a function of temperature and determine a suitable charging capacity. Each of the inputoutput adapters is assigned a range of IO bus DMA addresses by the hypervisor.