Technical

Mirrors

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phone: (610) 360-7874


Click above for white papers page.
 
 
 

Lightweight Cassegrain optical sets can be finished to CC, D-K or R-C.
 
 

Moon used to quantify

telescope performance
 

 

Solar eclipse taken from Dream; August 21st, 2017, 2:31pm. 


 

 

Dream specializes in the optimized design, engineering and in-house production of its bubble-free zeroDELTAlightweight mirror blanks, as well as finishing of lightweight optical mirrors & sets.

Dream's level of engineering, innovation and process control offers our customers the latest in unparalleled performance, including low MSF and low surface roughness.
 

 
zeroDELTA enables our customers through SWaP; Size, Weight & Performance:
* Elimination of quality-robbing boundary-layer mirror seeing, which is a centuries old problem with solid mirrors.
* Elimination of figure-distortion caused by internal temperature gradients, making zeroDELTA mirrors process & finish to the same levels as zero-expansion mirrors.
* Maintain tight optical alignment tolerances that come with today's latest optical designs - Dream's mirrors are 1/3 to 1/6 the mass of solid mirrors.
* Faster slews, better tracking performance and higher throughput due to lower inertia of the total instrument.
* Dream's level of engineering and therefore the mechanical performance of the mirrors does not force the use of expensive finishing techniques and/or technologies.
* All of the above at 6-10x lower cost than pocket-milled zero-expansion mirrors.

"We shall look back and see how inefficient, how primitive it was to work with thick, solid mirrors, obsolete mirror-curves, ..."
- George Willis Ritchey 1928
JRASC, Vol. XXII, No. 9, November 1928.
 

Solid glass mirror technology has changed little over 166 years. Dream's zeroDELTAmirrors deal directly with historic problems, as well as the print through issue with lightweight mirrors.

See a Dream engineered lightweight mirror in person:
- .April, SPIE DCS, booth 822
- .August 8-10, SPIE Optics and Photonics, booth 8548
- September 19-20, OSA Frontiers in Optics, booth 314
- October 17-19, SPIE Optifab, booth 212

 


Q u a l i t y

S t a r t s

A t

T h e

S u b s t r a t e

16" f2 IR carbon fiber telescope with gold-coated lightweight mirrors.

Dream mirror finished to higher quality level than Hubble Space Telescope's M2

This hyperboloidal convex secondary mirror (M2) was part of a Dream 24" Ritchey-Chrétien telescope for a NASA project.

Click here for additional information.

 

Dream delivers a fast & demanding 300mm CA f3 finished & coated Ritchey-Chrétien optical set.


Dream casts and fully processes a bubble-free f1.376 mirror for an Adaptive Optics project. The mirror is six times lower in areal density than Hubble's M1.
 

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QED Optics displays Dream mirror at SPIE's Photonics West

Designing, Engineering & Using Lightweight Mirrors Since 2003


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