Bk7 Optical Cylindrical Lens Custom Size Plano Convex Cylindrical Lens

• Customization: Available
• After-sales Service: Yes
• Warranty: 1 Year
• Model NO.: FSOC
• Usage: Lighting, Medical, Optical
• Type: Cylindrical Lens
• Transmittance: >95%
• Shape: Cylindrical Shaped Lens
• Material: Optical Glass
• Lenses Color: Clear
• Certification: ISO9001, CE
• Customized: Customized
• Coating: HC
• Model No: Fsoc-1
• Clear Aperture: >90%
• Surface Quality: 20/10 or Better
• Principle: Ar Coating
• Transport Package: Box
• Specification: Customized
• Trademark: FUSHI
• Origin: China
• Production Capacity: 2000pieces/Month
• Package Size: 20.00cm * 20.00cm * 20.00cm
• Package Gross Weight: 1.000kg

Product Description

Product Description

A cylindrical lens is an optical component with a cylindrical structure and falls under the category of aspherical lenses. Its cross-section can take various forms such as plano-convex, plano-concave, biconvex, or biconcave. This lens alters the light path through a one-dimensional magnification function, causing the planar image to deform. 

Our high-precision Optical Plano Convex Cylindrical Lenses are professional optical components with one flat surface and one convex cylindrical surface, crafted from premium optical materials (BK7 glass, fused silica, sapphire, etc.). Unlike spherical lenses that focus light in all directions, these cylindrical lenses only focus or collimate light along a single axis (the cylindrical axis), while keeping the light parallel along the other axis. As a professional custom manufacturer, we offer high-quality plano convex cylindrical lenses widely used in laser systems, imaging equipment, optical scanners, and medical instruments. Our lenses feature precise optical performance, stable quality, and flexible customization, perfectly meeting the needs of industrial, scientific, and medical applications.

Working Principle

Key Features

Wide Applications

The core principle of Optical Plano Convex Cylindrical Lenses is one-dimensional light focusing and collimation, relying on the convex cylindrical surface to refract light along a single axis:
• Step 1: Parallel light (or divergent light) enters the flat surface of the lens (no refraction occurs on the flat surface).
• Step 2: When light passes through the convex cylindrical surface, it is refracted and converged only along the direction perpendicular to the cylindrical axis (forming a line focus).
• Step 3: Along the direction parallel to the cylindrical axis, the light remains parallel and does not converge or diverge.
• Key Difference: Spherical lenses focus light into a point, while plano convex cylindrical lenses focus light into a line – this is their most distinctive feature.

Our Optical Plano Convex Cylindrical Lenses excel in optical performance and quality, standing out in the market:

• One-Dimensional Focusing Precision: High accuracy along the focus axis, low spherical aberration and coma, ensuring clear line focus and stable collimation.

• Premium Materials: Optional BK7 glass (cost-effective for visible light), fused silica (high UV transmittance, low expansion, high laser threshold), and sapphire (hard, scratch-resistant for harsh environments).

• High Transmittance: Precision-polished surfaces with optional AR coating, reducing single-side reflection to <0.25% and transmittance up to 99.5%.

• Strict Dimensional Control: Precise cylinder radius, thickness and axis parallelism (tolerance ±0.01mm) for perfect compatibility with optical systems.

Our Optical Plano Convex Cylindrical Lenses, with their unique one-dimensional focusing, are widely used across fields to support optical system optimization:

• Laser Systems: For beam collimation, line focusing and shaping in industrial laser cutting, marking, and medical lasers.

• Imaging & Scanning: Used in optical scanners, barcode readers and imaging devices to correct astigmatism and improve clarity.

• Medical Instruments: Applied in endoscopes, ophthalmic and medical imaging equipment to adjust light paths and enhance image quality.

• Scientific Research: Suitable for laboratory optical experiments, spectroscopy and optical detection tools.

• Industrial Detection: Used in optical inspection, machine vision and precision measurement instruments.

Specification

PRODUCT NAME	Cylindrical Lens
SURFACE PERFECTION	20/10-40/20
DIAMETER	5mm-500mm
DIAMETER TOLERANCE	+0.0/-0.1mm
TRANSMITTANCE	95%
TYPE	Optical Cylindrical Lens

Optical Applications‌

Cylindrical lens, compared with traditional spherical lenses, aspheric cylindrical lenses can eliminate spherical aberration, forming focal lines rather than focal points on the focusing axis, significantly reducing the beam size of monochromatic light sources. Its applications cover laser systems, barcode scanning, spectral analysis, and medical technology, etc. Cylindrical lens light regulation: Parallel light beams are reflected and focused into a straight line. The virtual focus diverges the light to form discrete paths. The incident angle affects the degree of image deformation of non-parallel light beams. The gap size is negatively correlated with the uniformity of the light spot. When the gap reaches micron-level precision, the light spot uniformity is better and the influence of the central focus is smaller.

Company Profile

FUSHI

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.

Customization Services

As a professional custom manufacturer of optical lenses, we provide one-stop customization solutions to fully meet your unique application needs, with fast response and high matching degree:
• Size Customization: Customizable lens diameter (from φ5mm to 200mm+), cylinder radius, lens thickness, and chamfer size, adapting to different installation spaces and optical path requirements.
• Material Customization: According to your application scenario (visible light, UV, NIR) and environmental requirements (high temperature, corrosion resistance), customize the most suitable substrate (BK7, fused silica, sapphire, etc.).
• Coating Customization: Optional AR coating (for high transmittance), high-reflection (HR) coating, or other special coatings to optimize optical performance for specific wavelengths.
• Technical Customization: Customize cylinder accuracy, surface flatness, and axis parallelism according to your specific technical parameters; provide personalized design solutions for special application scenarios.
• Fast Service: Free technical consultation, fast quotation within 24 hours, and sample customization service, ensuring that the customized products fully match your application needs.

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 your visit.

FAQ

Q: How can I get samples from you?
A: Just send us your requirements, and we will send samples accordingly. 
 
Q: How long is your delivery time? · 
A: 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?
A: Yes, we can customize the material, specifications and optical coating for your optical components as per your requirements.
Q: Are you a factory? 
A: 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?
A: More than four times of quality inspection during the production process; we can provide the Quality Test Report.