Glossary entry

German term or phrase:

ableitbar

English translation:

differentiable

Added to glossary by Heike Holthaus
Jan 24, 2018 15:18
6 yrs ago
5 viewers *
German term

ableitbar

German to English Tech/Engineering Medical: Instruments Eyeglass lenses
....dass eine Fläche mit reduzierten Oberflächenunterschieden, insbesondere eine **kontinuierliche ableitbare Fläche**, erzielt wird.

Context: Patent on manufacturing eyeglass lenses. Something (sorry, have to be vague) is applied to the lens blank to even out surface differences to achieve a "continuous ????? surface. The purpose is to reduce stresses during/after processing the lens.

TIA

Heike
Proposed translations (English)
4 +2 differentiable

Discussion

Anne Schulz Jan 25, 2018:
lol - is it really that bad? I agree, patent language is often more than awful. This particular patent, however, has a reasonable (and well-worded) explication on why eye glass surfaces should be kontinuierlich and ableitbar. (Yet I should probably withdraw my comment to phil as it seems "differentiable" is the common term, rather than "derivable", if a derivative can be calculated.)
gangels (X) Jan 25, 2018:
Asker Don't be coy. Give the full sentence for a lucid picture
Lancashireman Jan 25, 2018:
freepatentsonline.com Must surely be the worst source to quote on KudoZ. It instantly brings any proposal into disrepute.
Anne Schulz Jan 25, 2018:
@phil Based on http://www.freepatentsonline.com/DE19538470C2.html "derivable" does work. Why don't you post an answer?
philgoddard Jan 24, 2018:
The dictionary says derivable. Does that work? "Derivable curve" gets some hits.

Proposed translations

+2
2 hrs
Selected

differentiable

https://books.google.de/books?id=8YbbAAAAMAAJ&q="ableitbar" ...
(not derivable, here: differentiable)

https://math.stackexchange.com/questions/1117323/the-definit...
From: https://en.wikipedia.org/wiki/Smoothness#Differentiability_c... : a continuously differentiable function is a continuous function whose derivative exists.

All lenses are continuously differentiable! It's not a functioning lens until this is achieved

There is some evidence for the use of "continuously differentiable" relating to lenses on google patents, although I tend to take those with a pinch of salt (e.g. http://www.google.ch/patents/CA1223142A?cl=en
https://www.google.com/patents/US5137343)

You can also see mathematical papers on lens design that refer to the (twice) "continuously differentiable" property e.g. https://arxiv.org/pdf/0704.1059.pdf

--------------------------------------------------
Note added at 4 hrs (2018-01-24 19:27:33 GMT)
--------------------------------------------------

Also this question on lenses is essentially synonymous (except for the zweimal which yours doesn't mention) https://www.proz.com/kudoz/german_to_english/other/631537-zw...
Peer comment(s):

agree Anne Schulz
14 hrs
agree Wendy Robinson
17 hrs
Something went wrong...
4 KudoZ points awarded for this answer. Comment: "Thank you"
Term search
  • All of ProZ.com
  • Term search
  • Jobs
  • Forums
  • Multiple search