Del Mar Photonics - Newsletter

ZnSe rhomb request a quote

ZnSe half-wave rhomb
Type: half-wave rhomb
Material: ZnSe optical grade
Dimensions of working faces (input and
output): 25.4 x 25.4 mm (+0.0/-0.2 mm)
and two faces: 25.4 x 30.9 mm (+0.0/-0.2
Height: 25.4 mm (+0.0/-0.2 mm)
Angles: 32.5 deg and 147.5 deg
Angular deviation: +/-20 arc minutes
4 faces polished: SQ 60-40 scr-dig
Other 4 faces: fine ground
Coating: none
Working range of wavelength: 2-10 microns
Part number: ZnSe_rhomb_25.4_47.6 - buy online



ZnSe window, ø 25.4 mm x 3.0 mm

ZnSe optical grade
Type: circular plane window
Diameter: 25.4 mm (+0.0/-0.2 mm)
Thickness: 3 mm (+/-0.2 mm)
Surface quality: 60/40 scr/dig
Parallelism: 3 arc minutes
Clear aperture: 90% of diameter


Del Mar Photonics supply variety of ZnSe prisms both standard and custom made. Request a quote.

Featured inquiry:

Im part of a team working on a spectrograph design for the Canada-France-Hawaii telescope (CFHT). The system will include ZnSe cross-disperser prisms and will operate at [0.98 2.4 microns] range.

What is the maximum diameter of ZnSe prisms you can make. Do you make blank or just machine them?

Example of custom prism:

ZnSe prisms
Common specifications
Type: custom prism (according to your sketch)
Material: ZnSe optical grade
Dimensions: 24 x 15 mm (see sketch below)
Tolerances on dimensions: +/-0.1mm
Three rectangular faces polished: 60/40 scr/dig
Flatness: lambda @ 633 nm
All other faces (two triangle faces): fine ground
Angle: 30 deg +/- 20 arc min
Clear aperture: > 90% of total dimensions
Chamfers: ≤ 0.2 mm x 45 deg
Coating: none
Part number:
ZnSe_CP_24_15_30 deg - request a quote

Other ZnSe optics:

 Model   Product Name+   Buy Now 
 PH-ZnSe-40-30-20   ZnSe hemicylindrical prism, 20 mm  Buy Now 
 PH-ZnSe-25.4-12.7   ZnSe hemicylindrical prism, 25.4 mm  Buy Now 
 CR-ZnSe-5-5-10   ZnSe monocrystal, 5x5x10 mm  Buy Now 
 R-ZnSe-25.4-25.4   ZnSe rhomb, 25.4x25.4 mm  Buy Now 
 RAP-ZnSe-12.7-25.4   ZnSe right angle prism, 12.7 x 25.4 mm  Buy Now 
 RAP-ZnSe-40-30-20   ZnSe right angle prism, 40x30x20 mm  Buy Now 
 S-ZnSe-10-10-0.5   ZnSe slide, 10x10x0.5 mm  Buy Now 
 WS-ZnSe-100-100-10   ZnSe square window, 100x100x10, coated  Buy Now 
 TR-ZnSe-52-30-20   ZnSe trapezoid, 52x30x20 mm  Buy Now 
 VP-ZnSe-45-3-2 3/4   ZnSe viewport, 2-3/4  Buy Now 
 VP-ZnSe-73-4-4 1/2   ZnSe viewport, 4 1/2  Buy Now 
 VP-ZnSe-32-3.5-2 3/4   ZnSe viewport, dia. 32 mm, thickness 3.5 mm, flange 2-3/4  Buy Now 
 W-ZnSe-1.5"-2.5"-1/4   ZnSe window, 38.1x63x6.35 mm, coated  Buy Now 
 W-ZnSe-105-6-AR   ZnSe window, ø 105 mm, thickness 6 mm, coated  Buy Now 
 W-ZnSe-12.7-1   ZnSe window, ø 12.7 mm, thickness 1 mm  Buy Now 
 W-ZnSe-20-3   ZnSe window, ø 20, thickness 3 mm  Buy Now 
 W-ZnSe-25-2-AR   ZnSe window, ø 25, thickness 2 mm, coated  Buy Now 
 W-ZnSe-25.4-2-AR-3-1   ZnSe window, ø 25.4 mm, thickness 2 mm, AR coated 3-12 m  Buy Now 
 W-ZnSe-25.4-3   ZnSe window, ø 25.4 mm, thickness 3 mm  Buy Now 
 W-ZnSe-60-3-K   ZnSe window, ø 60 mm, thickness 3 mm, coated  Buy Now
 W-ZnSe-76.2-3-K   ZnSe window, ø 76.2 mm, thickness 3 mm, coated  Buy Now 

cleaning - vacuum viewport - AR coated
AR Coated Zinc Selenide Vacuum Viewport
Broadband AR coating (BBAR 350-700nm, 450-800nm, 650-1050nm, 1050-1620nm) for Vacuum Viewport
IR UHV view ports with Broad Band Anti-reflection (BBAR) coating for IR wavelength range
ZnSe viewport CF35 UHV 2.0 to 5.0 micron wavelength range
ZnSe window diam 12.7 mm, thickness 1 mm - diam 20 mm x 3 mm thick - diam 25.4 mm x 3 mm thick
ZnSe Zinc Selenide meniscus lenses
ZnSe Zinc Selenide Plane-Convex lenses
ZnSe Zinc Selenide High Power Plane-Convex lenses
related product: Gold Plated Silicon Mirrors
IR windows for a thermal imager on a vacuum system
IR Beamsplitters: ZnSe 70/30 beamsplitter for CO2 laser - 50/50 at 45 degrees
ZnSe window mounted in a 4.5 conflat for an IR photography application

Vacuum viewport
Del Mar Photonics offer a range of competitively priced UHV viewports , Conflat, ISO or KF including a variety of coatings to enhance performance. Del Mar Photonics viewports are manufactured using advanced techniques for control of special and critical processes, including 100 percent helium leak testing and x-ray measurements for metallization control. Windows Materials include: Fused silica, Quartz , Sapphire , MgF2, BaF2, CaF2, ZnSe, ZnS, Ge, Si, Pyrex. Standard Viewing diameters from .55" to 1.94 ".
Coating - a range of custom coatings can applied - which include
- Single QWOT
- Broad Band AR
- V coatings
- DLC (Diamond like coating)
more details - request a quote
When you send us your inquiry please fill out the following form to indicate all important specifications.



buy online

Del Mar Photonics supply infrared optics from other materials including ZnSe, Germanium, Barium Fluoride, Calcium Fluoride IR grade and many others. E-mail us for custom quote or check our online store for items available in stock.



 Model   Product Name+   Buy Now 
 W-CF-25.4-3   CaF2 window, ø 25.4 mm x 3.0 mm Buy Now 
 W-CaF-40-7   CaF2 window, ø 40 mm x 7.0 mm  Buy Now 
 W-CF-50.8-3   CaF2 window, ø 50.8 mm x 3.0 mm  Buy Now 
 DSP-CF-15   Dispersion prism, IR grade CaF2, 15x15x15x10 mm  Buy Now 


Ge optics

 Model   Product Name+   Buy Now 
 E-Ge-12.7-25.4   Ge etalon, ø 12.7 mm x 25.4 mm (ø 0.5" x 1")  Buy Now 
 W-Ge-25.4-3   Ge window, ø 25.4 mm x 3 mm  Buy Now 
 W-Ge-38.1-4   Ge window, ø 38.1 mm x 4 mm  Buy Now 


BaF2 - Barium Fluoride


 Model   Product Name+   Buy Now 
 WG-BF-25.4-10-1.55   BaF2 wedge, 25.4 mm x 10.0 mm x 1.55 mm  Buy Now 
 WG-BF-25.4-10-2.1   BaF2 wedge, 25.4 mm x 10.0 mm x 2.1 mm  Buy Now 
 WG-BF-25.4-10-2.5   BaF2 wedge, 25.4 mm x 10.0 mm x 2.5 mm  Buy Now 
 W-BF-12.7-2   BaF2 window, ø 12.7 mm x 2.0 mm  Buy Now 
 W-BF-4-0.5   BaF2 window, ø 4" x 0.5", polished, uncoated  Buy Now