Optical coating solutions: high-precision customized coatings enable the performance of optoelectronic devices to leap forward

In the field of precision optics and optoelectronic technology, the coating process is a key link in improving device performance and achieving optical design goals. Whether it is laser systems, imaging equipment, fiber optic communications, or sensing and display applications, the quality of the optical coating directly affects the transmission efficiency of light, the signal-to-noise ratio of the system, and the overall stability. However, in the face of diverse material systems and increasingly stringent optical indicators, traditional standardized coating solutions are no longer able to meet the needs of high-end applications. Relying on self-developed coating equipment and years of process accumulation, Hirundo has launched high-precision customized optical coating solutions, which are committed to helping customers break through the bottleneck of substrate adaptation and parameter compliance and achieve a leap in the performance of optoelectronic devices.

The core pain points of the industry: substrate adaptation and parameter accuracy challenges

Currently, optical coatings face two common challenges

Adaptation of multi-substrate coatings

There are significant differences in thermal expansion coefficient, surface energy, and chemical stability between different optical materials (such as various optical glasses, calcium/magnesium fluoride crystals, fused silica, semiconductor substrates, etc.). The same coating process often produces differences in adhesion, stress matching, or film density on different substrates, resulting in the film layer being prone to cracking, peeling off, or substandard optical properties.

Low compliance rate of high-precision optical parameters

Especially in special wavelength bands such as ultraviolet, deep ultraviolet, ultra-wideband, or extremely narrow band, the requirements for the transmittance, reflectivity, polarization characteristics, and phase control of the film layer are extremely strict. The design complexity of the film system is high, and process fluctuations can easily lead to center wavelength shifts, bandwidth deviations, or excessive losses, making it difficult to ensure product yields.

These pain points directly drive up customers' R&D costs and cycles and restrict the pace of innovation in high-end optics and systems.

Hirundo Solution: Trinity of high-precision coating systems

In response to the above challenges, Hirundo has built a solution with customized processes, precision film system design, and full-process quality control as the core.

1. Substrate-oriented customized coating process

We reject the "one-size-fits-all" coating model. At the beginning of the project, our process team will conduct a detailed analysis of the specific substrates (glass/crystals/other optical materials) provided by the customer and ensure that the film layer and the substrate achieve the best physical and chemical bonding state through process customization such as surface pretreatment, transition layer design, and dynamic adjustment of coating parameters. Whether it's deliquescence crystals or high-temperature-sensitive materials, we can provide targeted solutions that significantly improve the firmness and environmental durability of the coating.

2. High-precision film system design and simulation

With a deep theoretical accumulation of optical films and a rich design database, our engineers are able to cope with a variety of complex optical index requirements. Using advanced simulation software, we can perform accurate membrane designs covering:

Full wavelength requirements from ultraviolet to far infrared. Various functional film systems such as anti-reflection film (AR), high reflection film (HR), spectroscopic film, and filters.

Applications with special requirements for angular sensitivity, polarization state, and laser damage threshold (LIDT). The design phase fully considers the process tolerance to ensure that the design scheme has high realizability and stability in actual production.

3. Whole process quality inspection and closed-loop control

Quality runs through every link. We have built a complete quality system from substrate cleaning and pre-coating inspection to real-time optical monitoring (IAD, OMS, etc.) during the coating process to comprehensive inspection after finished products. Testing items include but are not limited to.

Spectral performance

 Use high-precision spectrophotometers to measure transmittance and reflectance to ensure that the spectral curve matches the design.

Environmental reliability

Conduct tests such as high and low temperature cycling, humidity, and adhesion to verify the stability of the film layer in harsh environments.

Surface defect detection

Monitor film uniformity, scattering, and defects.

Continuously optimize process parameters through data feedback to form a closed loop of "design-process-detection-optimization" to ensure a high degree of consistency between batches.

Platform advantages

Self-developed equipment and process precipitation create high yield.

Hirundo's core competitiveness stems from its in-house advanced coating equipment and years of process technology accumulation.

Self-developed coating platform

We have independent intellectual property rights for key modules such as the plasma source, film thickness control, and the vacuum and temperature control system of the coating machine, which can be flexibly configured and optimized according to special process needs, breaking through the limitations of foreign equipment "black box" operation.

Deep process database

Through numerous projects, we have accumulated a vast database covering different material combinations, membrane structures, and process parameters, which can quickly match and optimize the process route of new projects, greatly shortening the development cycle.

Significant yield advantage

 Thanks to the above capabilities, in the field of complex and high-precision optical coating, the comprehensive yield of our products exceeds the industry average by more than 15%, providing customers with reliable quality assurance and cost advantages.

Empowering the future: climbing new peaks of optoelectronic technology with customers

Hirundo's optical coating solutions have been successfully used in high-performance lasers, precision analytical instruments, aerospace optical systems, biomedical devices, and cutting-edge scientific research devices. We not only provide coating processing services but also are willing to become a strategic partner of customers in the field of optical films, intervening from the design stage to jointly overcome technical difficulties.

In an era where optical precision determines product height, choosing Hirundo means choosing a high-value coating solution with reliability, precision, and customization at its core. Let us work together to empower your optoelectronic devices to achieve performance leaps and breakthroughs with a layer of precision thin film.

Welcome to contact our technical team to provide you with targeted coating solution analysis and evaluation.