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Dream Cellular,
LLC specializes in the design, engineering and in-house production
of cellular mirror blank, including their annealing.
All substrates are cast in-house, typically to +/-1C. The average
anneal quality is 4nm/cm or less. The average CTE of Dream's
lightweight mirrors is 2.6-2.7x10-6/K. Pyrex and Borofloat 33
have a CTE that is 22.6% higher. |
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We do not fuse,
frit bond or use other such processes where individual components
are cut and then assembled. These methods often make it extremely
difficult, if not impossible, to vary specific rib thicknesses,
create sub ribs, tapered
ribs, etc. All of
Dream Cellular, LLC's blanks are cast (melted) to produce a single,
continuous blank that does not suffer from potential bonding
issues the other processes can experience. We can create designs
that are far more complex and optimized than other processes allow. |
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Dream Cellular,
LLC's lightweight optics have no
rivals because of
the extent of engineering and intelligent design that is put
into every blank. We bring an extensive knowledge base due to
years of design experience in cellular optics as well as supporting
and using such optics through our sister company, Dream Telescopes
& Acc., Inc..
In this way we have closed the design and engineering loop because
we do not simply design and produce cellular blanks, we use them
in full instruments. This broader-based, real-world knowledge
allows us to maximize the blank's design and features in every
way. Designing in features that are unique to optical support
are imperative. Dream Cellular, LLC is creating blanks that are
not just light, stiff and with a much shorter thermal time constant
but functional and optimized to a degree never seen
before. |
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Because we produce
the engineered, lightweight mirrors in-house it gives Dream control
over scheduling/delivery, as-designed versus as-cast variance,
annealing and an ability to quickly modify any design.
All of Dream Cellular's
light weight mirror blanks are designed using an iterative design/FEA
process to reach the design goals for both polishing and
gravity displacements. |
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Thermal
and mechanical advantages
of Dream Cellular, LLC's engineered substrates |
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