Rod Lens Customizable Special Type of Optical Lens Manufacturer for Optics

Product Description

Product Description

Our high-precision Optical Rod Lenses are cylindrical-shaped optical components with a polished circumference and ground flat ends, crafted from premium optical materials (BK7 glass, fused silica, sapphire, etc.). Unlike traditional spherical or cylindrical lenses, they feature a rod-like design that enables one-dimensional linear focusing and collimation of light, making them compact, space-saving, and highly efficient. As a professional custom manufacturer, we provide high-quality rod lenses that excel in beam shaping, light transmission, and linear focusing, widely used in laser systems, medical endoscopes, optical scanners, and scientific research equipment. Our lenses combine precise optical performance, durable quality, and flexible customization, perfectly meeting the diverse needs of industrial, medical, and scientific applications.

A lens is made according to the law of refraction of light. A lens is a refractive mirror, with its refractive surface being two spherical surfaces (a part of a sphere), or one spherical surface and one plane of a transparent body. The images formed by the lens can be real or virtual. Lenses are widely applied in various fields such as security, vehicles, digital cameras, lasers, optical instruments, etc. With the continuous development of the market, lens technology is becoming increasingly widely used.

Working Principle 

 Key Features

• Step 1: Collimated or divergent light enters the polished circumference of the rod lens (the key optical surface).
• Step 2: Due to the difference in refractive index between the lens material and air, light is refracted only along the direction perpendicular to the rod's central axis, forming a clear linear focus.
• Step 3: Along the direction parallel to the rod's central axis, light remains parallel and does not converge or diverge, maintaining stable light transmission.
• Key Feature: Rod lenses work similarly to cylindrical lenses but with a more compact rod shape, making them easier to integrate into small optical systems and ideal for linear focusing tasks.

• One-Dimensional Linear Focusing: Precise linear focusing & collimation, low aberration, ensuring clear, stable light convergence for linear imaging and beam shaping.

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

• Compact & Space-Saving: Rod-shaped, small, lightweight, easy to install and integrate into small optical systems or narrow spaces.

• Strict Precision Control: Diameter (±0.01mm), length (±0.1mm), roundness (≤0.005mm), surface quality (60/40 scratch/dig), ensuring perfect compatibility.

• Durable & Efficient: Precision-polished (≤5Å roughness), optional AR coating (≤99.5% transmittance), high light transmission, corrosion & high-temperature resistance for long-term stable use.

Specification

PRODUCT NAME	Rod Lens
PRODUCT SIZE	0.1 - 600mm
EFFECTIVE FOCAL LENGTH	250mm
DIAMETER TOLERANCE	+0.0/-0.1mm
TRANSMITTANCE	95%
TYPE	Optical Lens

Optical Applications‌

A lens is a type of lens where the thickness of the central part is much greater than the curvature radii of its two surfaces. Optical glass has high transparency, purity, colorlessness, uniform texture, and good refractive ability, making it the main raw material for lens production. The lens is the most fundamental optical component of the optical system of a microscope. Components such as the objective lens, eyepiece lens, and condenser lens are all composed of single or multiple lenses. Depending on their different shapes, they can be divided into convex lenses (positive lenses) and concave lenses (negative lenses). When a beam of light parallel to the principal axis passes through a convex lens, it converges at a point, which is called the "focus". The plane passing through the focus and perpendicular to the optical axis is called the "focal plane". There are two foci, the one in the object space is called the "object space focus", and the focal plane at this point is called the "object space focal plane"; conversely, the one in the image space is called the "image space focus", and the focal plane at this point is called the "image space focal plane". Light passing through a concave lens forms a virtual image upright, while a convex lens forms a inverted real image. Real images can be displayed on a screen, but virtual images cannot.

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

• Size Customization: Customizable diameter (φ1mm–50mm+), length (3mm–500mm+), and chamfer size, adapting to different optical path and installation requirements.
• Material Customization: Select the optimal substrate (BK7, fused silica, sapphire, etc.) according to your application wavelength (UV/VIS/NIR) and environmental conditions (high temperature, corrosion resistance).
• Coating Customization: Optional AR coating (for high transmittance), HR coating, or special coatings (e.g., laser line V-coating), optimizing optical performance for specific wavelengths.
• Technical Customization: Customize surface precision, roundness, and linear focusing accuracy; provide personalized design solutions for special scenarios (e.g., medical endoscopes, micro laser systems).
• Fast Service: Free technical consultation, 24-hour quotation, sample customization, and support for small-batch and large-batch orders, ensuring products fully match your requirements.

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.