demolding - разделение пресс-формы на составные элементы (mold members)
delensing - собственно извлечение линз или отделение линз от пресс-формы
см. описание процесса:
To produce lenses, such as contact lenses, it is necessary to separate the two mold members (e.g., demold the molding cup or lens mold), and to separate the lens product produced in the molding cup (e.g., delens the lens product
from one of the mold members)
...
the polymerized lens product can
be delensed by compressing a mold member with a force
sufficient to overcome the attachment force between the
lens product and a surface of the mold member.
...
The present methods and systems are effective in
delensing relatively flexible lens products from lens mold
members, and are particularly useful in delensing silicone
hydrogel contact lens products from lens mold members.
https://data.epo.org/publication-server/rest/v1.0/publicatio...



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Note added at 1 hr (2022-09-19 09:57:03 GMT)
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the present delensing methods include using a gas to facilitate separation of a polymerized contact lens product from a contact lens mold member


A method of manufacturing a silicone hydrogel contact lens, comprising:
curing a polymerizable silicone hydrogel lens precursor composition in a contact lens mold assembly to form a polymerized silicone hydrogel contact lens product located in a lens shaped cavity defined by a first mold section and a second mold section of the contact lens mold assembly;
demolding the contact lens mold assembly to provide a separated mold section comprising the polymerized silicone hydrogel contact lens product; and
delensing the polymerized silicone hydrogel contact lens product from the separated mold section comprising the polymerized silicone hydrogel contact lens product, wherein
the demolding comprises (i) contacting the contact lens mold assembly comprising the polymerized silicone hydrogel contact lens product with a liquid; and thereafter (ii) directing a wedge device between a portion of the first mold section and a portion of the second mold section so that the only one of the separated mold sections comprises the polymerized silicone hydrogel contact lens product; or
the delensing comprises (i) contacting the polymerized silicone hydrogel contact lens product of the separated mold section with a liquid to produce a hydrated silicone hydrogel contact lens product; and (ii) removing the hydrated silicone hydrogel contact lens product from the separated mold section using a vacuum device.
https://patents.google.com/patent/EP1752280A2/en