Custom Fabricated Biconvex Cylindrical Lenses with Sub-Nanometer Surface Finish Trusted by Global R&D Labs and Medical Device Manufacturers[

• Customization: Available
• Warranty: 1 Year
• Usage: Optical
• Model NO.: FSCL
• Type: Convex Lens
• Transmittance: 90%-95%
• Shape: Cylindrical Shaped Lens
• Material: Optical Glass
• Lenses Color: Clear
• Certification: RoHS, ISO9001, CE
• Customized: Customized
• Diameter (mm): 50.8
• Effective Focal Length (Efl) (mm): 250
• Surface Finish: 20/10-40/20
• Diameter Tolerance: +0.0 / -0.1
• Transport Package: Foam Carton Inner, Then Cartons to Pack Them
• Trademark: FS
• Origin: Tianjin
• Package Size: 20.00cm * 20.00cm * 20.00cm
• Package Gross Weight: 1.000kg

Product Description

Product Description

Biconvex cylindrical lenses hold a significant and distinctive place among optical components. Their design is clearly defined—unlike conventional spherical lenses, these lenses feature two convex surfaces that exhibit curvature along one axis while remaining flat (with no curvature) along the perpendicular axis. This unique geometry grants them special optical properties, making them indispensable in a wide range of applications.

Fushi Optics can provide customers with a variety of replicated grating products such as diffraction gratings, transmission gratings and holographic gratings to meet different needs.
 

Specification

PRODUCT NAME	Biconvex Cylindrical Lens
SURFACE PERFECTION	20/10-40/20
DIAMETER	50.8MM
DIAMETER TOLERANCE	+0.0/-0.1
MATERIAL	K9 GLASS
TRANSMITTANCE	91%
TYPE	Cylindrical Lens

Optical Applications‌

From an imaging perspective, biconvex cylindrical lenses can focus light in one direction while keeping it parallel or divergent in the other. This capability makes them particularly effective in specialized imaging tasks. For instance, in laser line scanning systems, such lenses shape a laser beam into a thin, focused line, enabling high-precision surface scanning. By fine-tuning the lens parameters, operators can control both the width and length of the laser line, adapting the system to meet varying requirements for resolution and coverage.

These lenses also find broad use in photography and projection technologies. In certain specialized camera lenses, they help correct image distortion—especially valuable when capturing wide-angle panoramic shots. They effectively reduce common distortions like pincushion or barrel effects, resulting in more accurate and lifelike images. In projection setups, biconvex cylindrical lenses reshape the light beam to better match the aspect ratio and geometry of the screen, enhancing both image clarity and visual quality.

Manufacturing biconvex cylindrical lenses is a complex process due to their non-symmetrical curved surfaces, which demand high precision. Key parameters such as radius of curvature and surface flatness must be tightly controlled to ensure optimal optical performance. Typically, advanced grinding and polishing techniques are employed to shape the lens surfaces, followed by rigorous testing and calibration to guarantee each unit meets strict quality standards.

Material selection plays a critical role as well. Different applications call for different lens materials. High-precision instruments often use optical glass with excellent transmission properties and strong thermal stability. In contrast, weight-sensitive or cost-driven applications may opt for lightweight alternatives such as optical-grade plastics. The choice of material not only influences optical performance but also affects mechanical durability and service life.

Company Profile

Tianjin Fushi Optics Co., Ltd.

Tianjin Fushi Optics Co., Ltd. is a comprehensive optoelectronic enterprise integrating R&D, production, sales, and after-sales service. Since its establishment in 2012, the company has been dedicated to technological innovation and industrial application in the field of optical components, with its manufacturing base located in China's core optical industry zone. The product portfolio covers a full range of optical basic components, including lenses, prisms, mirrors, optical windows, and filters, with particular technical expertise in the design and manufacturing of diffraction gratings.  
In 2017, Fushi Optics established a professional optical laboratory in Dongli District, Tianjin, committed to integrating optical theoretical research with engineering practice. After years of technical accumulation, the laboratory has gained wide academic recognition for its research achievements in spectral analysis, precision optical processing, and other fields, forming an integrated "industry-academia-research-application" technological innovation system. It continues to provide high-performance optical solutions for the optoelectronic industry.

FAQ

Q: How can I get samples from you?
Just send us your requirements, and we will send samples accordingly. 
 
Q: How long is your delivery time? · 
Regarding inventory, it is 3 working days;
For customized one, it's about 15-25 working days, depending on exact quantity and order date. 
 
Q: Can I customize the products based on my requirements?
Yes, we can customize the material, specifications and optical coating for your optical components as per your requirements.

Q: Are you a factory? 
Yes, we are a professional manufacturer of optical components. We have more than 20 years of experience in optical cold working.
 
Q: How do you control the quality?
More than four times of quality inspection during the production process; we can provide the Quality Test Report.

Packing & Delivery

We attach great importance to every detail in production and communication. Should you have any questions, suggestions, or comments, please do not hesitate to share them with us. Your feedback is invaluable in our pursuit to become a worthy, trusted, and reliable supplier. Thank you for yo