Optical Bonding
In larger lens systems, two or more components are often bonded together. This is because a single lens or prism refracts light to varying extents, resulting in a colour spectrum for a prism and chromatic aberration in lenses. These aberrations are corrected by combining two or more lenses made of different types of glass. Modern microscope, camera, smartphone and photography optics often consist of three to ten separate lenses.
The lenses and prisms are joined with a thin film of adhesive or optical cement, which acts as an achromatic lens and matches the lenses’ refractive index. So as not to impair the quality of the optics, these special adhesives and optical cements must have an extreme degree of purity and low shrinkage to prevent stress on the glass lenses.
The table below lists a selection of optical cements that are suitable for bonding lenses and optical bonding. Further adhesives and custom solutions are available on request.
To download the technical datasheets (TDS) please click on the adhesive name.
| Optical cement/ adhesive | Application | Viscosity [mPas] | Base | Curing* |
|---|---|---|---|---|
| Vitralit® 1505 |
optical cement lens bonding cement glass bonding potting material |
250-400 | epoxy | UV |
| Vitralit® 1527 |
optical cement lens bonding cement glass bonding potting material |
600-1,250 | epoxy | UV |
| Vitralit® 1528 |
optical cement lens bonding cement glass bonding potting material |
350-850 | epoxy |
UV secondary heat cure |
| Vitralit® 1605 |
encapsulation of electronic components optical cement lens bonding cement glass bonding potting material |
200-400 | epoxy |
UV secondary heat cure |
| Vitralit® 6127 | glass bonding | 20-100 | acrylate |
UV secondary heat cure |
| Vitralit® 6008 VLV | glass bonding | 40-90 | acrylate |
UV VIS |
*UV = 320 - 390 nm VIS = 405 nm