This page shows all inspection solutions for solar glass


Inspection solutions for solar glass

  • Best line yield due to advanced defect classification
  • Process optimization by early intervention
  • Low operating costs and increased profitability
  • High level of customer satisfaction
  • Optimize maintenance

Optical inspection systems ensure flawless solar glass products

Solar glass web-16-9

The production of solar glass presents several challenges that can lead to defects in the final product. While defects are common in glass manufacturing, their detection and differentiation in solar glass, production is particularly challenging. Even tiny defects must be detected and distinguished with high reliability.

Most vision systems are limited in their ability to achieve this level of precision. It is therefore critical for manufacturers to implement efficient quality inspection processes to ensure high-quality solar glass products. Otherwise, significant risks can arise, such as lower solar module efficiency and reliability, reduced customer satisfaction and ultimately financial losses.

ISRA VISION's inspection systems ensure quality throughout the entire solar glass production process, from cooling the glass ribbon to cutting the finished glass plate. The optical inspection systems are characterized by reliable detection, classification and differentiation of even the smallest defects. In this way, the systems ensure the highest quality of solar glass in accordance with the specified market standards.

Glass ribbon inspection

Patternscan Ribbon web 16-9

To inspect the patterned glass ribbon, our optical inspection system can be located directly after the furnace and cooling zones. The fully automated system is specially designed to provide precise inspection results even in hot and dirty production environments without the need for additional protective measures. 

As a result, the system ensures fast and reliable assessment of material quality on the patterned glass ribbon. In addition, it provides precise defect classification, enabling it to accurately distinguish between open and closed bubbles.


Fast installation and commissioning

Seamless integration into existing process lines

Shortest ramp-up times

Precise inspection results even in hot and dirty production environments

Distinction between open bubbles/closed bubbles, stones/bubbles

Features, typical defects and technical data


  • Advanced, learning defect classification 
  • Defect cluster analysis 
  • Suitable for connection with cut optimizing system 
  • Robust and resistant to heat and contamination 
  • Cross Dark Field-Technology 

Typical defects

  • Open bubbles, closed bubbles, elongated bubbles
  • Stones 
  • Scratches 
  • Inclusions 
  • Knots, threads 

Technical data

  • Non-clean room inspection down to 90 μm 
  • 2000-4700 mm inspection width 
  • Only one camera bank with switchable LEDs 

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Glass plate inspection

Several defects can occur in the manufacturing of solar glass plates that affect their performance and durability. One common problem is the glass edges, which can be chipped or unevenly cut, causing the glass plate to crack during installation. Another problem involves the solar cover glass, which can have scratches, contaminants or bubbles that reduce the panel's transparency and efficiency. 

Defects can also occur in the substrates used for the solar glass, which can reduce the efficiency of the solar glass panel. Finally, parabolic mirrors used in concentrated solar power systems can also have defects. This can lead to reduced reflection and energy capture, which lowers the overall efficiency of the system. 

ISRA VISION's inline surface inspection systems precisely inspect the entire surface and edges even at high production speeds to prevent further processing of defective solar glass plates. 

Flawless edges of solar glass 

After grinding, our automatic edge inspection system inspects the glass edges for all typical edge and grinding defects. It is the only system on the market to detect asymmetries in the grind at an early stage. Its high-precision edge inspection sensors can be flexibly integrated into the production line. Each sensor scans an edge with several high-resolution cameras and special illumination systems that enable an all-round view of the edge. The system then analyzes the generated images in real-time, detecting and classifying all edge defects, thus enabling automatic quality classification of the glass plates. The collected data can be used to determine the ideal replacement time for the grinding wheel and the edge cutter.

Defect-free solar cover glass

Directly after the washing zone, a patterned sheet glass inspection solution is installed to ensure defect-free solar cover glass. Thanks to ultra-fast pattern switching and multimode LED illumination, a theoretically unlimited number of differently illuminated views can be generated with just one camera or a series of cameras. The information from the different views is used to achieve reliable and advanced defect classification. The result: defects that were previously classified as invisible and indistinguishable become visible.

Monitoring of substrates (glass panels)

On entry into the thin-film solar module production process, a camera-based inline inspection system monitors the substrates (glass panels). On the fly, high-resolution line scan cameras reliably detect all defects on the glass panels at high processing speeds. This enables the user to identify and remove defective glass panels early on. 

Perfect planarity and curvature of parabolic mirrors

Finally, a fully automated 3D inline inspection system, specially developed for the demanding requirements of parabolic mirror production, precisely measures the planarity and curvature of a complete mirror in just 10 seconds. Deviation of the mirror angle from the setpoint (focus deviation) is measured using deflectometry. Glass that does not meet the required quality specifications is automatically sorted out and is not conveyed to downstream processes. In addition, the system automatically saves measurement data for statistical evaluations and thus helps to optimize processes.


Fast installation and commissioning

Shortest ramp-up times

Identification and removal of defective glass panels early on

Detection of asymmetries in the grind at an early stage 

Measurement of a complete parabolic mirror in just 10 seconds

Providing data for replacement time of the grinding wheel and the edge cutter

Features, typical defects and technical data


  • Applicable for float and sheet glass 
  • Individually switchable LED’s  
  • Certified detection performance  
  • Non-clean room inspection down to 90 µm 
  • MultiView-Technologie von ISRA 
  • Ultra-fast pattern-switching 
  • Multi-mode LED illumination 

Typical defects

  • Edge and grinding defects: cracks, chips, shiners, and burn marks 
  • Solar cover glass: Scratches, contaminants or bubbles 
  • Substrates: Delamination, warping, and thickness variations 
  • Parabolic mirrors: misalignment and deformation 
  • Surface defects like: stones, bubbles, Tin defects, Fine scratches, Cullet chip, Water traces 

Technical data

  • Resolution better 33 μm 
  • Waviness and flatness measurement in < 10 sec. 
  • Edge measurement with up to 80m/sec for glasses from 1 to 6 mm 
  • Up to 3.400 mm width for coating and color inspection 
  • Different illuminations channels like: 
    • Transmission Bright Field 
    • Cross Dark Field 
    • Transmission Dark Field 

Download additional information

생산 분석 - 데이터 기반 생산 효율성

웹 기반 생산 분석 플랫폼을 통해 모든 생산 라인의 시스템 상태를 한눈에 확인하거나 생산 데이터를 세부적으로 분석할 수 있습니다. 품질 관리 시스템을 통해 과거 데이터를 분석하고, 현재 검사 데이터를 실시간으로 모니터링하며, 생산 공정의 향후 추세를 파악할 수 있습니다.


생산 최적화

대시보드를 통해 생산 라인과 제품 데이터를 현장 또는 원격으로 비교하여 최적화를 위한 핵심 인사이트를 얻을 수 있습니다. 이를 통해 가치 사슬 전반에 걸쳐 정보에 입각한 전문적인 의사 결정을 내릴 수 있어 제품 품질과 수익성을 높일 수 있습니다. 최적화 조치의 진행 상황을 지속적으로 추적하고 시각화된 고급 리포트를 통해 이를 제시할 수 있습니다


생산 결함 조기 발견

실시간 상태 정보와 자동 알림을 통해 생산의 모든 단계에서 임계값 위반의 원인을 감지하고 신속하게 파악할 수 있습니다. 그 결과 생산 결함을 신속하게 해결하고 가동 중단 시간을 단축하며 생산 비용을 절감할 수 있습니다.


예측 유지보수

센서와 모니터링 시스템의 실시간 데이터를 분석하여 잠재적인 시스템 장애를 예방할 수 있습니다. 이를 통해 정해진 일정에 따르지 않고 기계의 실제 상태를 기반으로 유지보수를 사전에 계획할 수 있습니다. 이러한 데이터 기반 접근 방식은 다운타임을 줄이고 전반적인 생산성을 높임으로써 비용을 절감할 뿐만 아니라 생산 라인 수명을 연장합니다.

Your Benefits 이점

  • 시간을 절약하 수 있는 multi-line overview, 모든 품질 관련 정보를 한 번에 볼 수 있는 One view 시스템
  • 시스템 상태 데이터 모니터링으로 다운타임 최소화
  • 품질 데이터 모니터링으로 품질 문제에 대한 신속한 대응
  • 생산 결함의 신속한 제거, 생산 비용 절감
  • 유지보수 개선으로 다운타임 감소, 전체 생산성 향상 및 생산 라인 수명 연장

Key features 특징

생산 데이터 및 공장 상태에 대한 Overview

웹 기반 솔루션 (클라이언트 소프트웨어 설치 필요 없음)

사업부 중심의 대시보드, 고객별 맞춤 설정 가능

실시간 데이터에서 얻은 Live 로 인사이트 확보

임계값 모니터링 및 경고

관련 타사 데이터 통합 가능 및 고객 시스템으로 데이터 내보내기 가능

Customer service & training 고객 서비스 & 교육


생산 시스템의 효율적이고 미래 지향적인 운영을 위해 우수한 자격을 갖춘 서비스팀이 모든 문제에 대해 전 세계적으로 고객을 지원합니다. 연중무휴 24시간 신속하고 안정적으로 시스템의 구현, 유지보수 및 서비스는 물론 분석 및 최적화를 제공합니다.

서비스 센터를 방문하여 맞춤형 서비스 솔루션을 요청하세요.

또한 유능한 트레이너를 통해 시스템 운영자, 제품 엔지니어 및 품질 관리자가 진정한 검사 전문가가 될 수 있도록 직원들에게 항상 최신 지식을 제공하는 방법을 알아보시려면  ISRA 아카데미를 방문하세요.

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Contact us

Jennifer Kirstein


Albert-Einstein-Allee 36-40
45699 , Herten