Etymology. From Middle French, from Old French loupe (“sapphire lens, imperfect gem, mass of hot metal”), from Frankish *luppa (“something pendulous”), from Proto-Germanic *lubbǭ (“that which hangs or dangles”), *lub- (“to peel, hang”), from Proto-Indo-European *lep- (“to peel, skin”)..
What is loupe mean in English?
Definition of loupe
: a small magnifier used especially by jewelers and watchmakers.
How many lenses does a loupe have?
Lens Quality including triplet loupes
The very simplest loupes contain just one lens; better loupes contain two (doublets), very good loupes contain three (triplets) and a few contain five (“five element”).
How do you use a loupe?
Who invented the loupe?
In Rome Emperor Nero ( A.D. 37-68) was known to have peered through gemstones at actors on a distant stage. The first magnifier constructed for scientific purposes is believed to have been designed by the English philosopher Roger Bacon in 1250.
How do you keep a loupe in your eye?
HOW TO USE A LOUPE
- Hold the loupe close to your eye. You must realize that a lens that magnifies ten times has a fairly short focal length so it will be used only an inch or so from the eye.
- Keep your head up and both eyes open. Keep your head erect and don’t bend your head over.
- Brace the hand holding the loupe.
What is a Jewellers loupe?
Jeweller’s Loupe
Jeweller’s loupes are an essential workbench item for jewellers working with smaller or more intricate pieces. As a small magnification device, jeweller’s loupes can be held near objects to give you a magnified view of what you’re working with.
How do you pronounce poule?
Pronunciation
- IPA: /pul/
- audio. 0:02. (file)
- Rhymes: -ul.
What is Conard in French? , s. adj m. 1 (vieilli) idiot, imbécile, inintelligent, déficient (vieilli) innocent, stupide, inepte.
What loupe do jewelers use?
For gemologists, the 10X loupe (with ten-power magnification) is the standard for hand-held gem identification. Although you’ll find more powerful loupes, the depth of field (the area that’s in focus) is so small above 10X that they’re hard to use. Instead, use a microscope when you need higher magnification.
What is a poule?
slang. a young woman, particularly a promiscuous one.
Are loupes worth it?
Eliminating the desire to move closer to the mouth, a good fitting set of dental loupes promotes better posture and a long and healthy career. These benefits whilst extensive, are not always apparent immediately; and often using dental loupes involves a learning curve before all the benefits are experienced.
How do you pick a loupe?
Then review the following aspects of magnifiers:
- Number of Elements: A single lens is satisfactory for low powers.
- Working Distance: The distance from the magnifier to the object viewed is the working distance.
- Field of View:
- Eye Relief:
- Depth of Field:
- Coating:
- Magnification:
- BASIC MAGNIFIER OPTICAL SYSTEMS.
What is a Poule Hemingway?
Poule (noun) (slang)
pul. A girl or young woman, especially a promiscuous one. 1920s; earliest use found in Ernest Hemingway (1899–1961), writer. From French poule girl, young woman, (colloquial and slang) promiscuous woman, mistress, transferred uses of pole, poule hen.
Do loupes make your vision worse? Loupes help prevent eye strain and do not weaken or affect the eye, nor do they cause the user to become compromised in any way2,3.
Why are my loupes blurry? Please note though, that it is normal to see a blurry image as you move the optical barrels closer or farther apart or up and down. This is because you are still trying to adjust the loupes to match your PD and the ideal declination angle.
Should dentist wear loupes? First and foremost, vision is improved simply because everything in the field of view is so much bigger. Secondly, loupes are worn to allow dentists to have a more “physiologic” posture while working, and thereby minimize the slouching which dentists are historically known to develop.
What is a jeweler’s loupe used for?
How do I choose a loupe?
Magnification – The higher the magnification the smaller the field of view will be. Magnification is the last choice that you have in the dental loupe selection process. You need to determine on your own what magnification you feel most comfortable with and allows you to work effectively.
How do I choose a loupe?
Then review the following aspects of magnifiers:
- Number of Elements: A single lens is satisfactory for low powers.
- Working Distance: The distance from the magnifier to the object viewed is the working distance.
- Field of View:
- Eye Relief:
- Depth of Field:
- Coating:
- Magnification:
- BASIC MAGNIFIER OPTICAL SYSTEMS.
Can I use a loupe with glasses?
Implementation of Prescription of Eyeglasses with Loupes: FLM loupes are mounted in front of eyeglasses (bifocal areas of eyeglasses) and thus optics of FLM loupes do not require prescription lenses. But TTL loupes require prescription lenses as a part of the eye lenses of TTL loupe optics.
How do you look at a diamond with a loupe?
What are loupes glasses?
Dental loupes are the magnifying glasses that dentists wear to enlarge everything that they see in the mouth. There are two basic reasons why these glasses are worn. First and foremost, vision is improved simply because everything in the field of view is so much bigger.
How do I choose a jeweler’s loupe?
For gemologists, the 10X loupe (with ten-power magnification) is the standard for hand-held gem identification. Although you’ll find more powerful loupes, the depth of field (the area that’s in focus) is so small above 10X that they’re hard to use. Instead, use a microscope when you need higher magnification.
What is a jewellers loupe? Jeweller’s Loupe
Jeweller’s loupes are an essential workbench item for jewellers working with smaller or more intricate pieces. As a small magnification device, jeweller’s loupes can be held near objects to give you a magnified view of what you’re working with.
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