Retardation Film λ/4
The LINOS® λ/4 retardation film is an achromatic, 0.3 mm-thin optical sheet that provides precise phase control of polarized light within the 450–650 nm range. Based on the principle of classical birefringent waveplates such as gypsum or mica, it introduces a quarter-wave phase shift between orthogonal polarization components. When paired with a linear polarizer at 45°, it efficiently converts linearly polarized light into high-quality circular polarization, enabling accurate polarization control in a wide range of optical systems.
The λ/4 retardation film offers a thin, lightweight design that minimizes beam displacement, simplifies integration into compact setups, and maintains stable optical performance. It is available in both unmounted and mounted configurations, with a precision Ø 25 mm mount featuring an adjusting lever for Microbench systems, ensuring easy alignment and reproducible results. This makes it a practical solution for laboratory, educational, and instrumentation applications requiring reliable polarization control.
| Product | Retardation Film L/4; Mount D=25 | Retardation Film L/4; D=22.4 |
| Length | 10.0 mm | |
| Shape | Circular | Circular |
| Optic Size | Ø 22.4 mm | Ø 22.4 mm |
| Clear aperture | 21.0 mm | |
| Wavelength Range | 450.0 - 650.0 nm | 450.0 - 650.0 nm |
| Outer Mount Diameter | 25.0 mm |
Achromatic retardation sheet (0.3 mm-thin) for stable phase control with minimal optical distortion
Quarter-waveplate function optimized for 450–650 nm for efficient polarization conversion in the visible range
Enables generation of circularly polarized light when combined with a linear polarizer at 45°, ensuring precise polarization control
Based on proven gypsum/mica plate principle for reliable and well-understood optical performance
High transmission (>89%) ensures efficient light throughput and reduced signal loss
Available in unmounted and mounted versions for flexible system integration
Ø 25 mm mounted version with adjusting lever for Microbench systems enables fast, precise, and reproducible alignment in optical setups
Retardation Film L/4; Mount D=25 (G063411000)
Retardation Film L/4; D=22.4 (G374401000)
| Product | Retardation Film L/4; Mount D=25 | Retardation Film L/4; D=22.4 |
| Length | 10.0 mm | |
| Shape | Circular | Circular |
| Optic Size | Ø 22.4 mm | Ø 22.4 mm |
| Clear aperture | 21.0 mm | |
| Wavelength Range | 450.0 - 650.0 nm | 450.0 - 650.0 nm |
| Outer Mount Diameter | 25.0 mm |
Achromatic retardation sheet (0.3 mm-thin) for stable phase control with minimal optical distortion
Quarter-waveplate function optimized for 450–650 nm for efficient polarization conversion in the visible range
Enables generation of circularly polarized light when combined with a linear polarizer at 45°, ensuring precise polarization control
Based on proven gypsum/mica plate principle for reliable and well-understood optical performance
High transmission (>89%) ensures efficient light throughput and reduced signal loss
Available in unmounted and mounted versions for flexible system integration
Ø 25 mm mounted version with adjusting lever for Microbench systems enables fast, precise, and reproducible alignment in optical setups
Retardation Film L/4; Mount D=25 (G063411000)
Retardation Film L/4; D=22.4 (G374401000)