Description: THIS IS A OPHTHALMIC PRODUCT BUYER AUTHORIZED BY FDA ONLY THEY BUY THIS PRODUCTTHIS IS A OPHTHALMIC PRODUCT .BUYER AUTHORIZED BY FDA ONLY THEY BUY THIS PRODUCTTop Headlamp Specifications and Performance of New Sealed-Beam Headlamp W. F . SHERMAN, Manager, Engineering and Technical Department Automobile Manufacturers Association • THIS paper reports on the final outcome of a cooperative engineerii^ and development program aimed at improving the sealed-beam headlamp for automobiles. Participants in the activity have been the chief automotive lighting engineers from each major lamp manufacturing concern, the lighting engineers from each of the American vehicle companies, and representatives of the states' motor vehicle administrators. Necessarily, the author must acknowledge in advance the contributions of a great many people, and does so with gratitude. Origin of Program The reasons why the program was initiated are worth mentioning, first of all. In the last two decades, particularly since the end of World War II, the volume of traffic on America's streets and highways has grown at a surprising rate. In 1955, the number of cars, trucks and buses registered in the United States is near the 60- milllon mark, just about double the 1945 total. This tremendous increase in registrations, and a comparable increase in usage, has a special effect on night-driving conditions. A result is that the average driver is meeting other traffic more frequently, and in consequence has fewer opportunities to use the upper beam of his headlamps than he normally would in open country driving. More and more of his night driving now must be done on the lower beam, designed for traffic use and for meeting other vehicles on the highway. The significant factor, of course, is that, since the highway system is really no more extensive than it was before the war, the concentration of vehicles on the road at night is obviously much greater. This change in night-driving conditions prompted public officials and the manufacturers of headlamps and motor vehicles to see the need for an improvement in the lower beam pattern which would satisfy headlighting requirements through a wider range of driving situations. There also was a desire to improve headlamp features for adverse weather conditions.
Price: 285 USD
Location: AMBALA, HARYANA
End Time: 2024-08-21T08:56:15.000Z
Shipping Cost: 0 USD
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Item Specifics
Return shipping will be paid by: Seller
All returns accepted: Returns Accepted
Item must be returned within: 30 Days
Refund will be given as: Money Back
Brand: zaiss
Custom Bundle: No
Model: Na
MPN: Does Not Apply
Country/Region of Manufacture: India
Modified Item: No
Intended Use/Discipline: Ophthalmology, headlamp
