Optical lens
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United States of America
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Apr 19, 2022
Grant Date -
Jul 4, 2019
app pub date -
Dec 20, 2018
filing date -
Dec 20, 2018
priority date (Note) -
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status (Latency Note)
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Abstract
An optical lens includes a first lens, a second lens, a third lens, a fourth lens and a fifth lens arranged in order from a magnified side to a minified side. A sum of refractive powers of the first lens and the second lens is negative, and a sum of refractive powers of the third lens, the fourth lens and the fifth lens is positive. The first lens is a glass lens with a negative refractive power, the second lens is a plastic lens, and the third lens, the fourth lens and the fifth lens are composed of one glass lens with an Abbe number of larger than 60 and two plastic lenses.
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