REGINATO TELESCOPES
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Supremax ® BLANKS
We are updating prices , please inquire to info@reginato.it
Fine annealed Supremax
blanks are borosilicate glass
disks, extracted from a plate of
Schott Supremax® with a low
coefficient of thermal expansion
(3.25x10-6/°C) while the
standard glass (Soda Lime) has
got 8.5x10-6/°C.
To obtain blanks with a concave
surface, we first give it a
spherical shape with the
requested radius; the blank is
then treated for fine annealing
process that lasts 72 to 120
hours, depending on disk
diameter and thickness. All
stresses coming from the fast
cooling of the
vitreous cast mass are
removed; the blank optical
surface is then flattened again
and roughly shaped to the
requested concave surface.
The blank is now ready for next
glossing phases.
Diameter Thick.
Price
mm
mm
Euro
Polarized light image on blank,
before and after annealing
These are Soda Lime glass
disks obtained from commercial
grade glass plates; they are very
useful when
shaped for use
as tools in advanced grinding or
glossing phases of mirrors.
All these glass disks can be
provided roughly shaped
concave or convex.
We are able to do any kind of working on our production or
customer provided blanks, up to 32 inches (810mm) in diameter,
and up to 8" (200mm) in thickness.
TOOLS
Standard tolerance on the diameter are ±1.0mm, on the thickness are ±1.0 mm .
Price excluded Vat, delivery cost and packing
Working on blanks and tools
Standard tolerance on focal length are ± 1.5%.
Curve generating service price is connect to work on our blanks.
Please request quote for curve service on your blank
Price excluded Vat.
Flat surface
Concave surface
Convex surface
Rectfied edge
Central hole
Conical shape
Standard tolerance on the diameter are ±1.0mm, on the thickness are ±1.0 mm .
Precise tolerance on request.
Orders are confirmed on receipt of an advance of 15-25% of price list.
Packing is included on the price, delivery is at the customer’s expense.
Price excluded Vat.