Optical components Optical Components -Optical Glass – Optical Windows – Optical Lens – Microscope slides – Sight glass Polished Discs | Standard Disc Diameter | Standard Thickness available | Catalogue Number | | 5 | 1, 2 & 3mm | QPD 5 | | 10 | 1, 2 & 3mm | QPD 10 | | 15 | 1, 2 & 3mm | QPD 15 | | 20 | 1, 2 & 3mm | QPD 20 | | 25 | 1, 2 & 3mm | QPD 25 | | 30 | 1, 2 & 3mm | QPD 30 | | 35 | 1, 2 & 3mm | QPD 35 | | 40 | 1, 2 & 3mm | QPD 40 | | 45 | 2, 3 & 4mm | QPD 45 | | 50 | 2, 3 & 4mm | QPD 50 | | 55 | 2, 3 & 4mm | QPD 55 | | 60 | 2, 3 & 4mm | QPD 60 | | 65 | 2, 3 & 4mm | QPD 65 | | 70 | 2, 3 & 4mm | QPD 70 | | 75 | 2, 3, 4 & 5mm | QPD 75 | | 80 | 2, 3, 4 & 5mm | QPD 80 | | 85 | 2, 3, 4 & 5mm | QPD 85 | | 90 | 2, 3, 4 & 5mm | QPD 90 | | 95 | 2, 3, 4 & 5mm | QPD 95 | | 100 | 2, 3, 4 & 5mm | QPD 100 | | Larger sizes available on request | Thinner & thicker sizes available on request |
Optical Components -Optical Glass – Optical Windows – Optical Lens – Microscope slides – Sight glass Quartz tubes and Quartz plate can be polished to produce Optical windows, microscope slides & Sight glass. Below is a list of our standard polished items. Also available in Suprasil, Borosilicate and Sapphire glass Quartz Polished plates – Quartz Microscope Slides – Quartz Cover Slip Microscope Slides 75mm x 25mm x 1,2,& 3mm thick Quartz Cover Slips Watch glasses Viewing windows & Sight Glass for furnaces & high pressure systems
Technical Data on Clear Fused Quartz: This is the most effective general purpose quartz available. It is a high quality quartz made from natural quartz sand. Because it is made from natural resources, it does contain impurities. The impurities may cause broad band absorption if the quartz should solarize. Solarization appears as a purplish film over the length of the lamp. The chart below represents the transmission properties. 
Synthetic Fused Quartz – also known as Suprasil Quartz or Spectrosil Quartz This is a synthetic quartz grown from SiCl4. It is volatilized in a oxygen flame, or, if a hydroxyl free quartz is needed, it is formed by electrical arc in an oxidizing atmosphere. This quartz does not solarize because of the absence of ionic impurities normally associated with Clear Fused Quartz. The chart below represents the transmission properties. Transmission Curve of UV Grade Silica 
| | Typical production variation for 10mm thickness. Surface Reflection losses included | | | Theoretical Reflection Loss (uncoated) |
| | Typical transmission for 10mm thickness. Surface Reflection Losses included |
Special Properties- Very High ultraviolet transmission
- (UV)
- Low thermal expansion
- Very high temperature resistance
- Very high temperature change resistance
- High thermal shock resistance
- High material purity
- Low fluorescence
Typical Applications - UV-transmitting optics
- High temperature applications
- Cover slides for ultraviolet light applications
- Mirror substrates
- Measurement and sensor technology
- Windows for spacecrafts
Fused Silica is a synthetic molten amorphous quartz glass. A very high optical transmisson in the ultraviolet spectrum and an enormous temperature resistance are only two of the unique properties of this material. The remarkably high UV transparency cannot be performed by any other glass. Synthetic quartz glass has a low thermal expansion and a very high thermal shock resistance. Silica glass components are manufactured from large material blocks (boules). The raw material is sawn, ground, polished and shaped to the desired specification. The material can be selected for inclusions and index homogeneity requirements.
| Refractive Index Density Homogeneity - Homogeneity specifications (Class AA-E)
Inclusion Classes - Class 0 to 5 (detailed specifications)
Average Coefficient of Thermal Expansion Thermal Characteristics - Softening Point approx. 1585°C
- Annealing Point approx. 1075°C
- Strain Point approx. 990°C
Further detailed specifications on request
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