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Typical Polymer Materials:

• Calazole PBI- polybenzamidazole
• PEEK- polyetheretherketone
• PPS- polypheniline sulfide
• Ultem PEI- polyetherimide
• Torlon PAI- polyamide-imide

In semiconductor manufacturing, these materials are used for wafer handling tools, wand tips, wafer rings, polishing tools and numerous other critical processes.

Valley Design is your resource for engineering, prototyping and manufacturing solutions for electronic, medical, MEMS, aerospace and semiconductor clean room applications.

Return to Home Page: Polyimide applications and polyimide properties

Polished Polyimide Wafers:

Polyimide wafers, from stock, are polished on one side with less than 5nm Ra surface finish.

Polished polyimide wafer sizes manufactured on regular basis:

• Single and double sided polish
• Standard diameters are 2in, 3in, 100mm, and 150mm
  (Other diameters on special order)
• Standard thicknesses are 125µm (5mils), 250µm (10mils), 375µm (15mils), 500µm (20mils)
• Surface finish is less than 5nm
  (Finer finishes on special order)
• Thickness tolerances are ± 25µm (1mil) and ± 12.5µm (0.5mil)
  (Low µm thickness tolerances on special order)

Return to Home Page: Polyimide applications and polyimide properties

VDC Surface Finish Designations:

VDC – 1	As machined/manufactured – depending on thickness
VDC – 2	Lapped surface with loose abrasive – dull, uniform finish
VDC – 3	Diamond fine lapped – shiny but slightly scratched look
VDC – 4	Standard buffed surface
VDC – 5	Fine buffed surface
VDC – 6	Polished surface
VDC – 7	Fine polished surface (80/60 scratch/dig)
VDC – 8	Optically polished surface (60/40 scratch/dig)
VDC – 9	Fine optical polished surface (40/20 scratch/dig)
VDC – 10	Best optically polished surface (20/10 scratch/dig) – 20 Angstrom Ra range

1.5″ / 38.1mm Mirror Surface Finish Specifications:

s/d = scratch/dig
A = Angstroms

Surface Quality:	10/5 s/d, <5A
	10/5 s/d, <10A
	20/10 s/d, <10A

Other related web pages:

• Metallic mirrors vs. pure metal mirrors
• Molybdenum metal polished mirrors and optics
• Polished stainless steel wafers
• Stainless steel Optics
• Stainless steel wafers and substrates
• Superpolished metal optical components

Return to Home Page: Metal optics from aluminum, copper and molybdenum

Typical flatness is lambda/4 with a surface finish of 5nm Ra. Click here for more information on coated mirrors.

Valley Design can also supply polished mirrors from other metals :

• Stainless Steel
• Copper
• Molybdenum
• Nickel

Contact us for all your critical CNC machining needs, in materials ranging from soft PEEK to hard materials such as Sapphire.

Return to Home Page: Metal optics from aluminum, copper and molybdenum

Please call or e-mail for more details, or for a quotation per your specifications.

Other related web pages:

• Molybdenum metal polished mirrors and optics
• Polished stainless steel wafers
• Stainless steel Optics
• Stainless steel wafers and substrates
• Superpolished metal optical components

Return to Home Page: Metal optics from aluminum, copper and molybdenum

Physical properties of 17-4 PH Stainless Steel which are important for critical applications include:

• High-strength steel alloy
• Composition percentages: C = 0.07, Mn = 1.0 max, Ni = 3.0 – 5.0, Cu = 3.0 – 5.0, Nb + Ta = 0.15 – 0.45, Fe = balance
• Safe, continuous operating temperature: 316°C (600°F)
• Thermal conductivity: 17.9 W/mK
• CTE: 10.8 x 10^-6 at 100°C
• Density: 7.75 g/cc

Other super polished metal materials include Copper, Molybdenum, Brass, Aluminum and Nickel coated metals. Please call or e-mail for more details, or for a quotation per your specifications.

Other related web pages:

• Metallic mirrors vs. pure metal mirrors
• Molybdenum metal polished mirrors and optics
• Polished stainless steel wafers
• Stainless steel optics
• Stainless steel wafers and substrates
• Superpolished metal optical components

Return to Home Page: Metal optics from aluminum, copper and molybdenum

Using its proprietary technology, Valley Design can now produce Angstrom level optical surface finishes on these pure metal mirrors, eliminating the necessity for expensive and lower performance metallic coatings. Pure metal optics mirrors minimize distortion of the reflected image, and offer a very hard, scratch-resistant surface with low thermal distortion. Mirrors manufactured from Molybdenum and Stainless Steel exhibit many of these advantages.

Please call or e-mail for more details, or for a quotation per your specifications.

Other related web pages:

• Molybdenum metal polished mirrors and optics
• Polished stainless steel wafers
• Stainless steel Optics
• Stainless steel wafers and substrates
• Superpolished metal optical components

Return to Home Page: Metal optics from aluminum, copper and molybdenum

• Highest optical damage threshold
• High anti-corrosion stability
• Hard and extremely scratch-resistant, stable surface with unrestricted cleanability
• Low absorption and scattering losses: < 2%
• High thermal conductivity: 138 W/mK
• High IR reflectivity: > 98%
• Surface finish: 20/10 scratch/dig; < 20 Angstroms
• Typical flatness: lambda/2, lambda/4, lambda/10

Please call or e-mail for more details, or for a quotation per your specifications.

Other related web pages:

• Metallic mirrors vs. pure metal mirrors
• Polished stainless steel wafers
• Stainless Steel Optics
• Stainless steel wafers and substrates
• Superpolished metal optical components

Return to Home Page: Metal optics from aluminum, copper and molybdenum

Valley Design also offers custom optical colored filter glass.

• Geometries from 2mm to 200mm
• Ultra-thin <25 microns up to 15mm thick
• Thickness tolerances to ±0.5 microns
• Precision dicing to 125 microns
• Small hole and core drilling
• Machining, shaping and chamfering
• Superpolished surface finishes <10 Angstroms

Click here for all color filter glass specifications and transmission curves.

Contact Valley Design for all your colored filter glass needs and for HEBO filter glass.

Violet optical color filter glass

Violet glass filters are designated as V 01, V 02 and V 03.

V 01 is equivalent to Schott	–	and Hoya B – 390
V 02 is equivalent to Schott	BG 3	and Hoya –
V 03 is equivalent to Schott	–	and Hoya B-370