Collimating Lenses for Optical Fibers and Spectrometers
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United States
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On FindLight:
since 2017
Description
Our Collimating Lenses and Fixtures are a cornerstone in the realm of fiber optic coupled lens fixtures, seamlessly integrating with our broad array of sampling accessories. These fixtures are meticulously designed with an inner barrel threaded for SMA 905 Connectors, ensuring a reliable and consistent connection. This series is renowned for its versatility and precision, making it a preferred choice for professionals seeking high-quality optical solutions.
The 74-UV Collimating Lens, covering a wavelength range of 200-2000 nm, is equipped with an f/2 fused silica lens. This design allows for minimal beam divergence, typically 2° or less, depending on the fiber diameter. The 74-UV is adaptable for both UV-VIS and VIS-NIR setups, providing flexibility in various optical applications. Similarly, the 74-90-UV variant features a strategically placed mirror under its cap, reflecting light at a 90° angle. This mirror is coated with a UV-enhanced aluminum substrate, offering over 80% reflectivity across the same wavelength range.
For those focusing on the VIS-NIR spectrum, the 74-VIS Collimating Lens, with its BK7 lens, is an excellent choice. While single-lens systems like this can experience chromatic aberration due to dispersion, they remain a reliable option for many applications. The 74-DA Direct-attach Collimating Lens is designed for enhanced light throughput, attaching directly to a spectrometer’s SMA 905 Connector. This configuration allows for efficient light collection and focus onto a spectrometer’s slit.
The 74-ACR Collimating Lens stands out with its achromatic doublet, composed of two optical elements cemented together. This design is optimized to correct for both spherical and chromatic aberrations, ensuring superior optical performance. Meanwhile, the COL-UV-30, the largest in the series with a 30 mm diameter, offers an expansive coupling capability to SMA 905 connectors, making it ideal for larger free-space beams.
Our 84-Series Lens Fixtures extend the capabilities of the 74-Series by accommodating larger free-space beams. With a fiber coupling assembly positioned approximately 100 mm from the lens surface, these fixtures allow for precise focus adjustments, enhancing their utility in complex optical setups.
Collimating Lenses for Optical Fibers and Spectrometers
Specifications |
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|---|---|
| Range COL-UV-30: | 200-2000 nm |
| Connector 84-UV-25: | SMA 905, 6.35-mm ferrule, 1/4-36 external thread |
| Operating Temp 84-UV-25: | 70 °C |
| Range 84-UV-25: | 200-2000 nm |
| Material 84-UV-25: | f/2 fused silica |
| Focal Length 84-UV-25: | 100 mm |
| Diameter 84-UV-25: | 25.4 mm |
| Connector COL-UV-30: | SMA 905, 6.35-mm ferrule, 1/4-36 external thread |
| Operating Temp COL-UV-30: | 200 °C |
| Diameter 74-UV: | 5 mm |
| Material COL-UV-30: | f/2 fused silica |
| Focal Length COL-UV-30: | 30 mm |
| Diameter COL-UV-30: | 30 mm |
| Connector 74-UV: | SMA 905, 6.35-mm ferrule, 3/8-24 external thread |
| Operating Temp 74-UV: | 150 °C |
| Range 74-UV: | 200-2000 nm |
| Material 74-UV: | f/2 fused silica |
| Focal Length 74-UV: | 10 mm |
Features
- Versatile Range: The 74-Series Lens Fixtures cover a wide spectral range from 200-2000 nm, making them suitable for various applications in UV, VIS, and NIR spectrums.
- High-Quality Optics: Equipped with f/2 fused silica and BK7 lenses, these fixtures ensure optimal light transmission and minimal beam divergence.
- SMA 905 Compatibility: All lenses feature an inner barrel threaded for SMA 905 connectors, ensuring easy integration with existing systems.
- Adjustable Focus: The 74-UV and 74-90-UV models allow for adjustments to optimize setups for UV-VIS or VIS-NIR applications.
- Enhanced Reflectivity: The 74-90-UV model includes a UV-enhanced aluminum mirror with >80% reflectivity, redirecting light at a 90° angle.
- Direct-Attach Option: The 74-DA model screws directly onto a spectrometer’s SMA 905 connector, increasing light throughput and efficiency.
- Achromatic Design: The 74-ACR model features an achromatic doublet to correct for spherical and chromatic aberrations, ensuring precise measurements.
- Robust Temperature Range: These lenses operate effectively up to 150 °C, with the COL-UV-30 model capable of withstanding up to 200 °C.
- Large Diameter Option: The COL-UV-30 offers a 30 mm diameter lens for coupling larger free-space beams to optical fibers.
- Fine Focus Control: The 84-Series Lens Fixtures provide fine focus adjustments, ideal for precise optical fiber coupling.
Applications
- 74-UV Collimating Lens
(200-2000 nm) The 74-UV has an f/2 fused silica lens for 200-2000 nm. When focused for collimation, beam divergence is 2° or less, depending on fiber diameter. The 74-UV can be adjusted for UV-VIS or VIS-NIR setups. - 74-90-UV Collimating Lens
(200-2000 nm) The 74-90-UV features a mirror located under its cap that reflects light from the collimating lens to 90°. The mirror is coated with a UV-enhanced aluminum substrate that is >80% reflective from 200-2000 nm. - 74-VIS Collimating Lens
(350-2000 nm) The 74-VIS has a BK7 lens suitable for the VIS-NIR. These single-lens systems have the disadvantage of chromatic aberration, due to dispersion or variation in refractive index with wavelength. - 74-DA Collimating Lens
(200-2000 nm) The 74-DA Direct-attach Collimating Lens screws on to a spectrometer’s SMA 905 Connector for increased light throughput. The lens collects collimated light in a straight path of open air and focuses it onto a spectrometer’s slit. - 74-ACR Collimating Lens
(350-2000 nm) The 74-ACR has two optical elements cemented together to form an achromatic doublet, optimized to correct for spherical and chromatic aberrations. - 84-Series Lens Fixtures
(200-2000 nm) The 84-Series Collimating Lens is designed for coupling larger free-space beams to optical fibers. The fiber is coupled to the assembly with an inner 17.85 mm threaded barrel. The barrel positions the fiber ~100 mm from the lens surface and is turned to achieve a fine focus. - COL-UV-30 Collimating Lens
(200-2000 nm) This 74-series Collimating Lens is our largest-diameter lens – 30 mm – and couples to SMA 905 connectors for simple use.
Frequently Asked Questions
The 74-UV Collimating Lens has a wavelength range of 200-2000 nm.
The 74-90-UV Collimating Lens features a mirror under its cap that reflects light at a 90° angle, while the 74-UV does not have this feature.
The 74-VIS Collimating Lens uses a BK7 glass lens.
The 74-ACR Collimating Lens is designed to correct for spherical and chromatic aberrations using an achromatic doublet.
The 74-DA Collimating Lens can operate at temperatures up to 150 °C.
The COL-UV-30 Collimating Lens has a diameter of 30 mm.
The 74-Series Lens Fixtures use SMA 905 connectors.