
Point Vicente Fresnel
Lens
Harbour Lights #678
Lighted
Along the picturesque coastal landscape of California,
between Point Loma and Point Conception, you will find one of the most
beautiful spots in the nation, complete with palm trees, breaking waves
and a lighthouse, standing as a reminder of the history of this serene
location.
Point Vicente Light was illuminated in 1926 and was outfitted with a Third
Order Fresnel Lens. The lens was manufactured in 1886 by Barbier, Benord &
Turenne in Paris, France, and is by far the most beautiful aspect of this
magnificent lighthouse. This lens is unlike any other because of the
unique bivalve type design. The double prism allowed for two rapid
flashes, followed by seconds of darkness, giving the seafaring travelers
better visibility and recognition of the treacherous area this lighthouse
protects.
The Fresnel Lens, pronounced ‘fra-nel’, was first introduced by the French
scientist Augustine Jean Fresnel. Augustine was born in 1788. His father
was an architect so mathematics and a love for science were in his blood.
In 1824, well into Fresnel’s career, he was employed by the Lighthouse
Commission and as part of his effort he developed the use of compound
lenses instead of mirrors for lighthouse visibility. The new Fresnel Lens
was introduced shortly after development and is used still today in almost
all lighthouses throughout the nation.
The unique bivalve Third Order Lens is still located in the Point Vicente
Lighthouse for visitors to enjoy. It produces two white flashes every
twenty seconds and is powered by a 1,000 watt bulb. The light emanating
from the powerful lens is rated at 437,000 candlepower and can be seen up
to twenty miles away. Although the lighthouse was automated in 1971, it
still serves as an active aid to navigation and is kept in pristine
condition by the Coast Guard.
|
HL# |
Name |
MSRP |
Introduced |
Expected |
Edition |
|
678 |
Point Vicente Fresnel Lens CA |
$99 |
06/05 |
09/05 |
3,000 |
|