Desk Ott-Lite provides more desktop illumination than the halogen bulbs overhead in my office ceiling. I now look forward to working at my desk after dark here in sunny Arizona, because of the quality of light coming from this lamp. Ott-Lite provides detailed instructions with every package. Phone support and corporate accounts are available. In my situation the light is actually too bright to use here on the desk with my iMac unless I bend it away from the computer's screen.
Low wattage means low heat.
Equivalent to a standard harsh 100w bulb, Ott-Lite's 18 Watt tube bulb is safely warm, not hot to the touch, and is rated to last 10,000 hours. Accessories and bulbs for my Crane and their other lamps are available. Call the company and ask where to preview the lineup in your neighborhood. I personally recommend Ott-Lites. They are attractive and good value, just like your Macintosh.