Introduction to ACHRON SATIC LENSES COLIMNATORS

Technical Description of ACHROMATIC LENSES COLLIMATORS

ACHRONSATIC LENSES COLLIMATORS are high-precision optical devices that integrate achromatic lens groups. Their core function is to convert divergent light beams into high-parallelism collimated light beams while effectively correcting chromatic aberration in multi-wavelength light and solving chromatic aberration problems with traditional single-lens collimators. Achieve high-quality collimation and transmission of wide-band light beams. With excellent achromatic performance, high beam quality and wide wavelength compatibility, it is widely used in high-end optical fields such as fiber optic communications, laser processing, spectral analysis, medical equipment, etc., and is a core component for ensuring the stable performance of multi-wavelength optical systems.

1. Core Principles and Structural Design

(1) Core principles of achromatic design

When a common single-lens collimator deals with a mixed beam of multiple wavelengths, light of different wavelengths will focus at different positions due to refractive index differences, resulting in chromatic aberration, which leads to a decrease in beam collimation accuracy and spot distortion.

Achromatic lens collimators are designed with double-bonded or triple-bonded achromatic lens groups, which are precisely bonded from low dispersion optical glass (such as crown glass) and high dispersion optical glass (such as flint glass). The complementary dispersion characteristics of the two glasses can focus two or more wavelengths of light at the same focal point within the preset wavelength range (such as visible light band, near-infrared band), while correcting axial chromatic aberration and magnification chromatic aberration to ensure consistent parallelism and spot quality of the wide-band beam after collimation.

(2) Core structure composition

The structure design of the achromatic lens collimator takes into account both optical performance and mechanical stability, and is mainly composed of four core components:

Achromatic lens group:

As the core optical component, it adopts double or triple bonding process, with anti-reflection coating on the lens surface, suitable for the wide band of 350nm-2300nm, transmittance ≥98%, effectively reducing light reflection loss.

Fiber coupling  assembly:      

Compatible with single-mode (SM)/multi-mode (MM) fiber, interface supports  standard specifications such as SC/FC/LC, the fiber end face is precisely ground (PC/UPC/APC type optional) to ensure precise alignment with the   optical axis of the lens assembly, coupling efficiency ≥95%.

Precision adjustment structure: 

Made of ceramic or Kovar alloy with a low coefficient of thermal expansion, equipped with a six-dimensional fine-tuning platform that can precisely adjust the relative position between the lens group and the fiber, optimize collimation accuracy, adjustment accuracy ≤0.001mm.

Sealed protective housing: 

Industrial-grade sealed design, water and dust  resistance IP65, with excellent temperature and vibration resistance, can operate stably in an environment of -40 ° C to 85 ° C to prevent  dust and water vapor from entering and affecting optical performance.

2. Core technical parameters

The technical parameters of the achromatic lens collimator strictly follow industrial-grade high-end standards, taking into account both achromatic performance and collimation accuracy. The core parameters are as follows (with customization support) :

 3. Core Strengths

Wide band  achromatic, excellent beam quality: 

Effectively corrects chromatic aberration within the preset wavelength range, ensures  uniform and distortion-free spot after collimation of multi-wavelength  beams, solves the chromatic aberration pain point of traditional   collimators, and is compatible with multi-wavelength mixed light source  scenarios.

High collimation accuracy and low transmission loss: 

The precision lens group design and six-dimensional fine-tuning structure ensure  collimation accuracy and coupling efficiency, with insertion loss as low as 0.15dB, significantly reducing light energy loss.

Strong environmental adaptability and high stability: 

Low thermal expansion coefficient material and industrial-grade seal design, excellent  temperature change resistance, vibration resistance and corrosion resistance, can operate stably for a long time in harsh environments, with a service life of more than 100,000 hours.

Flexible customization and wide adaptability: 

Supports multi-dimensional customization in terms of wavelength range, power carrying capacity, interface specifications, size, etc. The lens group design can be optimized according to customer requirements to meet the personalized needs of different fields such as optical fiber communication  and spectral analysis.

Easy to integrate and operate: 

The standardized interface and compact structure design can be directly integrated into various optical systems, and the locking after adjustment is simple, requiring no complex maintenance.

4. Applicable fields

Achromatic lens collimators, with their dual advantages of wide-band achromatic and high collimation accuracy, are widely used in multi-wavelength optical scenarios with strict requirements for beam quality:

Spectral  analysis:  

Compatible with ultraviolet-vision-near-infrared spectrometers, Raman spectrometers, etc. Ensure collimation transmission of multi-wavelength detection beams and improve spectral detection accuracy and resolution.

Fiber optic communications: 

Used in wavelength division multiplexing (WDM)  communication systems to achieve efficient collimation and coupling of multi-wavelength optical signals, enhancing the transmission capacity and stability of communication systems.

Laser processing: 

Compatible with multi-wavelength laser cutting and welding equipment, correct laser chromatic aberration, ensure uniform laser energy focused on the workpiece surface, and improve processing accuracy and consistency.

Medical equipment:  

For multi-wavelength laser treatment equipment, biomedical imaging equipment to ensure precise transmission of treatment/imaging beams, reduce damage to healthy tissues, and improve treatment outcomes.

In the field of scientific research experiments: 

Adapted for multi-wavelength optical experiments in universities and research institutions, such as interferometry, optical quantum communication research, etc. providing high-quality collimated beams for experiments and facilitating scientific research breakthroughs.

Machine Vision: 

Used in high-resolution industrial cameras, laser rangefinders and other devices  to correct chromatic aberration between ambient light and laser, improving imaging clarity and ranging accuracy.

5. Precautions for Use and storage

Notes for Use:

Operate in a clean environment. Avoid direct contact with the lens surface by hand. If stained, wipe gently with a lint-free cotton swab dipped in anhydrous ethanol. Do not use corrosive cleaning agents.

When connecting the light source, make sure the wavelength and power of the light source are within the rated range of the device to avoid high-power light  burning out the lens or fiber.

When adjusting  the position of the lens group, do it slowly and smoothly to avoid the optical axis deviation caused by rapid adjustment, and be sure to lock the fixed structure after the adjustment is completed.

Storage Notes:

When not in use for a long time, protective caps should be worn on the lens and interface. Store in a dry, clean, dark environment with a storage  temperature of -20 ° C to 60 ° C and a relative humidity of no more than 60%.

Avoid contact with corrosive gases and strong electromagnetic interference sources to  prevent damage to the lens film or oxidation of the structural  components.

Our ACHRONSATIC LENSES COLLIMATORS series adheres to the ISO 9001 quality management system throughout the process, with strict quality control at every step from raw material selection, lens group bonding to finished product inspection. For more details on customization or technical solutions, contact our technical team for exclusive support