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Optical Projector: Precision Measurement Redefined by Mikrosize
In modern manufacturing, the demand for precision has never been higher. As a premier Measuring Testing Instrument supplier, Mikrosize is dedicated to providing cutting-edge solutions that empower industries to achieve flawless production standards. At the heart of this metrological evolution lies the Optical Projector, also widely known as the Digital Projector or Contour Projector.
What is an Optical Projector?
An Optical Projector is a sophisticated device that integrates optics, precision mechanics, and electronics to perform non-contact two-dimensional measurement. Its primary function is to magnify the profile of a workpiece—such as gears, threads, or stamped components—and project its shadow onto a viewing screen. This allows operators to visually compare the part against a template or measure features directly. Whether referred to as an Optical Comparator or Profile Projector, this tool is the gold standard for verifying manufactured part geometry across aerospace, automotive, and medical industries.
The Mikrosize Commitment to Precision Metrology
As a trusted Measuring Testing Instrument supplier, Mikrosize understands that accuracy is a promise. While globally renowned for hardness testing (Rockwell, Vickers, Brinell), our commitment extends to every facet of dimensional metrology. We provide high-precision instruments, including advanced Optical Projectors, ensuring clients access to holistic quality assurance solutions.

In-Depth Technical Specifications: JT12A-B φ300 Model
The JT12A-B φ300 represents traditional optical design enhanced by modern digital readouts.
Optical System Excellence: This model features a positive image projection system, ensuring screen orientation matches the workpiece, reducing operator error. It offers vertical and horizontal dual projection modes with objective lens groups including 10×, 20×, 50×, and 100× magnifications for inspecting both large contours and minute details.
The Aspherical Condenser Lens Advantage: High-quality projectors from Mikrosize integrate an aspherical condenser lens that corrects aberrations found in standard spherical lenses. This ensures perfectly collimated light, providing a uniformly bright screen from edge to edge—critical for reducing measurement errors on complex contours.
Illumination and Cooling Systems: The JT12A-B utilizes dual-source lighting: 12V 100W transmission illumination for sharp contours, and 24V 150W reflection illumination for surface details. An axial fan dual-direction cooling system maintains thermal stability during prolonged use, preventing heat distortion and maintaining specified accuracy.
Measurement Capacity and Accuracy: The workbench offers 150mm X-axis and 50mm Y-axis travel, supporting 0° to 360° rotation for easy angle measurement. Accuracy is rated at (4+L/25) μm, meaning for a 100mm measurement, precision is 0.008mm—essential for high-stakes industries.
Data Management: Built-in DS401SM multi-function digital display provides real-time positioning data and supports geometric calculations. An integrated micro printer allows immediate result documentation for streamlined quality audits.
Robust Construction: Built upon a granite base with excellent vibration damping, and equipped with high-accuracy grating displacement sensors, this instrument ensures reliable detection of complex contours.
Working Principle and Methodologies
The profile projector working principle uses telecentric optics ensuring constant magnification regardless of part position, eliminating parallax error. Operators use two methods: Absolute Measurement (moving stage crosshairs between edges) and Relative Measurement (comparing silhouette to master chart gauges for rapid batch inspection).
Diverse Applications Across Industries
As a leading Measuring Testing Instrument supplier, Mikrosize provides tailored solutions:
Automotive: Inspecting piston rings, gears, and fuel injection nozzles
Aerospace: Verifying turbine blades and critical fasteners
Electronics & Medical: Examining lead frames, connector pins, and surgical tools
Plastic Molding: Measuring molded parts against CAD data
Elevating Quality Control with Integrated Solutions
Mikrosize empowers manufacturers to create synergistic quality control loops. For example, a heat-treated gear first undergoes hardness verification using a Mikrosize Hardness Tester, then dimensional verification on the Optical Projector—ensuring both material properties and geometry meet specifications.

Product Features That Set Mikrosize Apart
Positive Image Projection: Aligns with standard measurement practices
Dual-Level Perspective Lighting: Optimal contrast for any workpiece
Aspherical Lens Clarity: Bright, uniform field reducing eye strain
Long-Life Illumination: Imported halogen lamps minimize downtime
High-Efficiency Cooling: Bidirectional heat dissipation ensures stability
Advanced Digital Readout: Simplifies complex geometric calculations
Why Choose Mikrosize?
Holistic Metrology Expertise: Complete solutions from hardness to dimensional testing
Quality Assurance: Instruments delivering reliable 1 Micron Accuracy
Customer-Centric Approach: Expert guidance for specific applications
Global Standards: Compliance with international metrology standards

Conclusion
The Optical Projector remains a fundamental pillar of quality control, providing fast, accurate, non-contact dimensional measurement. As a dedicated Measuring Testing Instrument supplier, Mikrosize combines material properties expertise with dimensional measurement precision—ensuring your products are both strong and dimensionally flawless. Invest in the accuracy that builds trust—invest in Mikrosize.