Thermoplastic optical resin
Fluorene-based polyester resin（OKP）
OKP is a special optical polyester-resin derived from coalchemistry.
It possesses excellent optical properties such as high refractive index and extremely low birefringence.
It is used in various types of camera lenses and sensor applications, including smartphones.
Features
High refractive index
Low Abbe number
Low birefringence
Precision machinability
Examples of applications
Smartphone Camera Lenses
Automotive and surveillance camera lenses
HMD(AR/VR) Lenses
Optical components for various sensors
Optical property
Refractive index-Abbe number
Thinning and miniaturization of camera lenses and optical components can be realized by high refractive index characteristics.
By using it as a chromatic aberration correction lens due to its low Abbe number characteristics High-quality lens design with less color blurring is possible.
Comparison of birefringence (lens retardation)
Clear images can be obtained with lens with less distortion comparable to glass lenses.
Measuring device : Photonic Lattice,Inc.[WPA-200-L] Lens diameter : φ4.5mm Centrar thickness : 0.26mm
Product list
| Product | OKP4 | OKP4HT-L | OKP-1 | OKP-Z5 | Reference※1 PC(for optical use) |
|---|---|---|---|---|---|
| Glass transition temperature（Tg）［℃］ | 121 | 142 | 132 | 143 | 145 |
| Refractive index［nD25］ | 1.607 | 1.632 | 1.642 | 1.656 | 1.585 |
| Abbe number［νD］ | 27 | 23 | 22 | 21 | 29 |
※1 Reference figures are cited from catalogues and literature.
※The data in the above table are for reference only and do not warrant the product.
※For detailed data, refer to the catalog on the right.
To download data
To request a glass data (ZEMAX, CodeV) please fill out the form below and press the “Send” button.You can download the catalog immediately.
