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The restored Fresnel has operated reliably since 1999. It’s only a little finicky, requiring, as it did in the past, some human care and attention to keep it happy. Every week, the protective storm window panes of the lantern room are checked and cleaned, surfaces dusted, and brass polished. Quarterly, the lens is shut down for a complete mechanical check and a thorough cleaning.

La carte de parrainage permet au «Parrain» de cumuler des francs Suisse sur son «CompteFidélité» dans lesconditions suivantes:A l'occasion de chaque achat chez OPTICAL CENTER, 3 cartes de parrainage numérotées sontactivées et remisesmatériellement au «Parrain». Ce dernier les distribue à ses amis, sa famille ou toutepersonne de son choix quel'on désigne comme étant le «Filleul».Lorsqu'un «Filleul» procède à un achat en utilisant la carte de parrainage que lui a remiseson «Parrain», ce dernierdispose d'un crédit de 20CHF à deux conditions : d’une part, le «Filleul» ne doit pas êtrerépertorié comme clientOPTICAL CENTER et d'autre part le «Filleul» doit utiliser la carte de parrainage au plustard dans les 12 mois suivantla date à laquelle le «Parrain» l'a reçue d'OPTICAL CENTER.Le «Parrain» bénéficie d'un crédit de 20CHF par «Filleul» qui a acheté comme indiquéci-avant. Le «Parrain» pourraimputer son crédit dans la limite de 60CHF par achat qu'il effectuera. Tout créditcomplémentaire relatif auparrainage sera reporté à l'occasion d'un nouvel achat.Les francs Suisse acquis grâce au parrainage sont utilisables dans les mêmes délais etconditions que ce qui estindiqué à la rubrique "le Compte Fidélité"

Fresnellenslighthouse

The phrase lighthouse keeper conjures a romantic image of stalwart men and women braving storms and a solitary life in remote outposts. There are still many lighthouses in operation today, but the transistorized NAVAID panel, automated lamp changers, and other electronic innovations, have made the profession of lightkeeper virtually obsolete. In 1972, our own Fresnel lens was disengaged, and an aero-marine type rotating beacon was mounted on the roof.

The order of a Fresnel lighthouse lens reflects its size. First order lenses are the largest. Our lens is a third order lens.

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Reviving the Fresnel as a modern, automated light was no easy matter. It had to be made as reliable as the DCB (Directional Code Beacon, commonly in airports), which had replaced the Fresnel in 1972. Advanced technical support is provided as needed by the US Coast Guard Aids to Navigation Team. The Point Cabrillo Light House combines 19th century technology with the sophisticated electronics of today, and was nurtured to fruition by the lightkeepers’ finest attributes: a passion for detail, creative problem solving, and copious elbow grease.

Fresnellenspronunciation

Glasses are a piece of equipment that is often used every day and can therefore easily get dirty due to external elements or rubbing against the skin. It is therefore essential to clean them regularly, both the lenses and the frame, mainly using a microfibre cloth. However, if the latter is itself soiled, it will not be able to clean your glasses properly and may even soil them further. In fact, when it is dirty, the cleaning cloth will transmit the dirt particles to the glasses on which it is rubbed. In addition, when a dirty microfibre cloth is rubbed over the lenses, it does not restore their original clarity as well as a clean cloth can. The dirty cloth may even dull the lens even more, or even scratch it slightly. However, a microfiber cloth for glasses will tend to get dirty quite easily. Indeed, it is not always stored as well as it should be on a daily basis, due to lack of time or attention. And even when stored in the spectacle case, the cleaning cloth still needs to be cleaned regularly since it takes up all the dirt it removes from the glasses.

Once the need to clean your eyewear cleaning cloths has been taken into account, you need to know how to do it. Indeed, it's necessary to clean the microfibre cloth well so that it does not get damaged and that it regains its initial effectiveness. Indeed, as well as knowing how to properly clean your glasses, it is imperative to know the correct procedure for your cleaning cloth. To do this properly, it is advisable to use cold water and mild soap. The microfiber cloth should be left to soak for a few minutes and then rinsed again with cold water. Although effective, cleaning it in a washing machine can damage the cloth if it is done too often. Finally, a glasses cleaning cloth that is too damaged or too worn must be replaced. Do not hesitate to ask your Optical Center optician for a new one and make sure you wash your new cleaning cloth regularly.

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Research tells us that our lens is one of only three lenses in the United States made by the English firm of Chance Brothers. It is in very good condition and needs little mechanical work. Restoring the Fresnel lens and putting it back into operation preserves a significant piece of our maritime heritage for future generations. It is the heart of the Point Cabrillo Light Station.

To take good care of your glasses, it is essential to clean them regularly, especially with the help of cleaning cloths. However, it is important to ensure that the cleaning rag used is itself clean so that it can perform its function properly. Here's why it's imperative that your eyewear cleaning cloth is clean and how to properly wash it without damaging it.

FresnelLensSheet

The invention of the Fresnel lens was an enormous technological breakthrough in 1820 that affects us today – for example, in theater lights and car head lamps. These lenses revolutionized lighthouses and saved countless lives. The lighthouse lenses are not in widespread use now and are rapidly disappearing through vandalism and neglect. Not much is known about working on them, which makes the educational aspect of the lens restoration very valuable. We want to record and disseminate this information as thoroughly as possible, to make it possible for others to care for and, hopefully, restore other lenses.

At the Point Cabrillo Light Station State Historic Park, lightkeeping has made a comeback. Since the return of the Fresnel lens to service in 1999, the volunteer lightkeepers from Coast Guard Auxiliary Flotilla 87 have been trained to perform maintenance on both the lens and lantern room.

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