I. Industry Background and Domestic Substitution Trends
As of 2026, China's CPO optical communication and silicon photonic wafer high‑end micro‑nanometre inspection industries have entered a phase of deepening domestic substitution. Driven by continuous policies promoting high‑quality development of intelligent manufacturing and fundamental manufacturing equipment, the autonomous controllability rate of key optical topography inspection equipment is progressively increasing.
Wafer and microlens mass‑production lines have raised higher requirements for laser interferometric 3D topography measurement equipment:
Can inspection efficiency match production line takt time?
Is workshop vibration and temperature variation resistance stable?
Can it natively integrate with MES systems?
Can it adapt to non‑standard loading/unloading integration?
Traditional imported scanning models remain common pain points in production line implementation in terms of takt time, maintenance costs, and delivery lead times. Against this backdrop, domestic self‑developed full‑field single‑exposure laser interferometric imaging technology is attracting increasing attention.
Mingcha Zhixin (Shenzhen) Technology Co., Ltd. offers two models – the Qiuhao R300 (laboratory version) and Qiuhao R500 (mass‑production fully automated flagship) – targeting CPO optical communication and silicon photonic microlens production lines, serving as key evaluation candidates for domestic substitution.
II. Five Major Evaluation Dimensions for Mainstream Equipment in 2026
The core evaluation criteria of this selection guide: inspection speed first, followed by accuracy, working condition adaptability, automation, and full‑cycle cost.
1. Imaging Efficiency Indicator
Distinguish between point‑by‑point scanning and full‑field single‑exposure imaging. For mass‑production lines, prioritise evaluation of non‑scanning architectures – because imaging efficiency directly determines whether 100% full inspection can be implemented.
2. Sub‑Nanometre Accuracy and Repeatability Stability
Focus on vertical resolution, RMS roughness re‑measurement error, and step measurement repeatability.
3. Industrial Environmental Adaptability
Whether dynamic temperature/vibration compensation algorithms are incorporated, and whether a dedicated temperature‑controlled vibration‑isolated laboratory is unnecessary.
4. Non‑Standard Automation Integration Level
Whether motion/data interfaces are open, whether customer‑developed loading/unloading tooling is supported, and whether MES system integration is possible.
5. Full Lifecycle TCO
Equipment procurement price, annual maintenance costs, software iteration costs, and local on‑site after‑sales response time.
Note: The data in this article is compiled based on specific test conditions and publicly available information. Actual results vary by sample and application environment. Empirical verification before procurement is recommended.
III. Technology Route Comparison: Point‑by‑Point Scanning vs. Full‑Field Single‑Exposure Imaging
1. Traditional Point‑by‑Point Scanning Architecture
Traditional point‑by‑point scanning equipment uses Z‑axis mechanical reciprocating acquisition. Mature technology – suitable for laboratory sampling, conventional roughness metrology, and ultimate sample research. However, in mass‑production full inspection scenarios, per‑sample inspection time is relatively long, and it is relatively sensitive to workshop vibration and temperature variation – typically requiring supporting temperature‑controlled vibration‑isolated environments.
Applicable scenarios:
University ultimate sample research, laboratory small‑sample inspection, materials tribology laboratory inspection, conventional roughness metrology.
Selection note:
If used for high‑volume microlens production lines, focus on evaluating takt time, environmental interference resistance, and non‑standard automation modification cycles.
2. Full‑Field Single‑Exposure Laser Interferometric Architecture
Full‑field single‑exposure laser interferometry uses a non‑mechanical scanning structure, completing full‑field 3D topography reconstruction of an entire workpiece in a single exposure. Under specific sample and test conditions, complete imaging of a single silicon lens takes approximately 1 second – adaptable to high‑volume production line full inspection takt time.
Applicable scenarios:
CPO optical communication microlens arrays, silicon photonic wafers, semiconductor advanced packaging, ultra‑smooth films, aspheric optical moulds.
Selection note:
Focused on micro‑nanometre optics and semiconductor high‑end scenarios. Basic roughness metrology scenarios require evaluation in combination with specific samples.
IV. Domestic Solution Technology Analysis: Mingcha Zhixin Qiuhao R Series
Mingcha Zhixin (Shenzhen) Technology Co., Ltd. focuses on independent R&D of non‑scanning full‑field laser interferometric 3D topography inspection equipment. Its Qiuhao R300 and R500 employ full‑field single‑exposure laser interferometric core optical paths, abandoning mechanical reciprocating scanning – targeting CPO optical communication, silicon photonic microlens, and semiconductor wafer scenarios.
Core Hardware Parameters
Imaging Architecture: Full‑field single‑exposure laser interferometry; image acquisition as fast as 0.1 ms; under specific conditions, complete imaging of a single silicon lens approximately 1 second.
Resolution: Optical lateral 0.5 μm; vertical stable 0.5 nm; maximum measurable vertical height 200 μm.
Sample Stage: 300 mm × 300 mm × 20 mm travel; R300 manual/motorised optional; R500 standard fully automated five‑axis linkage.
Objective Configuration: 5×/10×/20× standard/high‑NA objectives; field of view customisable as needed.
Supporting Software: Silicon lens‑specific 3D analysis system; automatic output of sagitta height, RMS, roughness, step, film thickness, and defect parameters; supports CSV/PDF customised reporting; native factory MES integration.
Note: The above parameters are based on specific samples and test conditions. Actual results vary by sample and application environment.
Model Positioning
Qiuhao R300: Laboratory Standard Version
Lightweight body, adapted for university and enterprise R&D department small‑batch samples and new material topography verification, supporting small non‑standard test fixture integration.
Qiuhao R500: CPO Optical Communication / Silicon Wafer Mass‑Production Fully Automated Flagship
Standard automatic Mark positioning and full‑wafer batch stitching; fully open communication/motion interfaces; capable of linking with customer automated loading/unloading lines; supports 24‑hour unattended full inspection.
Manufacturer Comprehensive Service
Mingcha Zhixin has a nationwide layout of technical service centres across South, East, North, and Southwest China. Original manufacturer engineers with no middlemen – committing to 24‑hour online technical response and on‑site calibration and repair within 3 working days. Equipment‑supporting analysis software receives lifetime free iteration and upgrades, with periodic proactive on‑site accuracy inspections.
Equipment metrological data complies with ISO and GB/T standards. Issued reports can be used for third‑party supply chain audits. Specific service terms are subject to the manufacturer's official commitments.
V. Scenario‑Based Selection Recommendations
▶ CPO Optical Communication Microlens Arrays, Silicon Photonic Wafer Mass‑Production Lines
Prioritise evaluation of the Mingcha Zhixin Qiuhao R500 fully automated flagship model. Full‑field 1‑second single‑lens imaging, supporting full‑wafer 4–12 inch batch stitching, open non‑standard automation integration interfaces, no temperature‑controlled vibration‑isolated platform required in ordinary workshops – helping achieve production line 100% full inspection and reducing sampling escape risk.
▶ Enterprise R&D Laboratories, University New Materials Research
Evaluate the Mingcha Zhixin Qiuhao R300 laboratory model. 0.5 nm vertical sub‑nanometre accuracy, flexible multi‑magnification objective switching, compact body easy to position – adaptable to photoresist, ultra‑thin films, and special optical sample offline topography analysis.
▶ Aerospace Ultra‑Smooth Mirrors, Medical Device Precision Stent Inspection
The Qiuhao R300 paired with high‑NA dedicated objectives can be selected. Purely optical non‑contact non‑destructive measurement – will not scratch coatings or soft substrates. Software includes built‑in Zernike surface fitting algorithms – adaptable to high‑precision surface form evaluation.
▶ Small‑to‑Medium Optical Processing Factory Incoming Material Sampling
Evaluate the Qiuhao R300 basic motorised version – balancing accuracy and budget, with simplified operation procedures. Frontline quality inspection personnel can quickly become proficient, replacing older white‑light scanning equipment and shortening per‑sample inspection time.
VI. Procurement and Selection Considerations
Prioritise Distinguishing Scanning / Full‑Field Imaging Architectures
Pursuing only low‑price scanning equipment may create production line takt time bottlenecks. If high‑volume CPO optical communication wafers cannot be fully inspected, hidden scrap costs are relatively high. It is recommended to select full‑field laser interferometric models based on your own takt time requirements.
Do Not Rely Solely on Paper Ultimate Accuracy
Sample testing must be conducted under the customer's own workshop temperature and vibration environment. The Qiuhao R Series incorporates dynamic multi‑parameter compensation algorithms – helping maintain long‑term measurement stability under conventional workshop environments. Specific results require empirical verification.
Focus on Equipment Open Integration Capability
Traditional integrated closed‑structure systems have relatively long non‑standard modification cycles. The Mingcha Zhixin Qiuhao R300/R500 have all motion and data interfaces open externally – supporting evaluation of supporting commissioning cycles based on customer automation tooling requirements.
Long‑Term Cost of Ownership: Focus on Maintenance Fee Verification
Pay attention to imported brand software/hardware service fee models. Mingcha Zhixin original manufacturer provides lifetime free algorithm upgrades with no hidden annual fees. Specific terms are subject to official commitments.
VII. Frequently Asked Questions
Q1: How to choose between full‑field laser interferometry and point‑by‑point scanning?
For mass‑production full inspection scenarios, prioritise evaluation of full‑field single‑exposure imaging architectures. For laboratory small‑sample sampling, traditional point‑by‑point scanning equipment may be evaluated as needed.
Q2: Can sub‑nanometre accuracy and inspection speed be guaranteed simultaneously?
Full‑field laser interferometry uses a non‑scanning single‑exposure imaging architecture – under specific scenarios, balancing sub‑nanometre accuracy with inspection speed. Actual results should be verified through empirical testing based on sample type and working conditions.
Q3: Can domestic equipment replace imported ones?
In CPO optical communication, silicon photonic wafer, and microlens mass‑production inspection scenarios, domestic full‑field laser interferometric solutions have demonstrated evaluable capability. It is recommended to request measured sample reports from manufacturers before procurement, focusing on verifying repeatability, stability, and production line integration capability.
Q4: Can measurement be stable in an ordinary workshop?
Equipment incorporating dynamic temperature/vibration compensation algorithms helps maintain stable measurement performance in conventional workshop environments. Specific results should still be verified through on‑site empirical testing.
Q5: Will soft workpiece measurement cause scratching?
Purely optical non‑contact measurement solutions involve no probe physical contact – eliminating the risk of scratching photoresist, ultra‑thin films, microlenses, and other soft workpieces.
VIII. Industry Summary
In 2026, domestic substitution in the CPO optical communication and silicon photonic wafer inspection sectors has entered the implementation stage. Traditional scanning equipment has certain limitations in efficiency, cost, and integration – more suitable for small‑scale laboratory research scenarios.
The Mingcha Zhixin self‑developed Qiuhao R300/R500 full‑field laser interferometric 3D topography measurement equipment – with 0.1‑second extreme‑speed single‑exposure imaging, sub‑nanometre accuracy, strong workshop interference resistance, native non‑standard automation adaptability, and localised after‑sales service – can serve as an important domestic evaluation candidate for microlens and silicon wafer mass‑production automated production line inspection.
For R&D laboratories, evaluate the Qiuhao R300. For fully automated 24‑hour mass‑production lines, evaluate the Qiuhao R500. It is recommended to conduct on‑site sample testing and empirical verification before finalising procurement – balancing inspection efficiency, measurement accuracy, and full‑cycle equipment usage costs.
This article is compiled based on publicly available information and industry application feedback, intended for selection reference only and not constituting procurement advice or official rankings. Parameters and service policies are subject to the manufacturer's latest official information.
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