LSI SYSTEMS

Overview

The LVE Series Non-contact Optical Extensometer is a state-of-the-art non-contact optical strain measurement system designed to accurately capture strain during tensile testing. Unlike traditional clip-on extensometers that must be physically attached to the specimen, the LVE system enables full-field monitoring of gauge length and width changes throughout the test—right up to specimen fracture—without touching the sample.
Equipped with an ultra-high-resolution camera, specialized telecentric lens, and custom light source with optical filters, the system delivers superior precision and eliminates the influence of ambient lighting. Its non-intrusive design is suitable for a wide range of materials including metals, plastics, composites, and ceramics.

Design Features and Benefits

Excellent repeatability

Measurement results are immune to variations in operator handling techniques.

Near-infinite service life

There is no risk of extensometer damage caused by specimen fracture, enabling reliable strain tracking up to specimen rupture.

No additional loading

No cutting-edge induced damage to specimens, especially soft specimens.

Capable of testing hard-to-measure materials

Enables strain measurement for materials difficult to test with conventional extensometers, such as ropes and thin films.

Suitable for harsh environments

Strain measurement can be performed under high-temperature and high-humidity conditions.

Application

玻璃纤维单向板拉伸

复合材料压缩弹性模量测量

复合材料V型试样内剪切试验

Strain Measurement under High and Low Temperature Conditions

It can operate within high-temperature and low-temperature environments, with a maximum rated temperature of 1100 °C.
Optical quartz glass is adopted for thermal chambers or high-temperature furnaces.
The thermal chamber is equipped with a low-temperature defogging function.

Key Specifications

Model	镜头	视野	变形测量范围（标距变形）	Accuracy Class(ISO9513)	Accuracy Class(ASTM E83)	Resolution	Dimensions (Height (H) x Depth (D) x Width (W))	Weight	采样频率
▼ 近心
LVE251A	单镜头近心	25mm	0~25mm	class 1	B2（标距4mm以上）	0.001mm	23570220	约5kg	0.1~500Hz
LVE102A	单镜头近心	100mm	0~100mm	class 1	B2（标距10mm以上）	0.001mm	23570220	约5kg	0.1~500Hz
LVE202A	单镜头近心	200mm	0~200mm	class 1	B2（标距30mm以上）	0.0013mm	23570220	约5kg	0.1~500Hz
LVE302A	单镜头近心	300mm	0~300mm	class 1	B2（标距50mm以上）	0.0015mm	23570220	约5kg	0.1~500Hz
LVE502A	单镜头近心	500mm	0~500mm	class 1	B2（标距100mm以上）	0.002mm	23570220	约5kg	0.1~500Hz
LVE502B	双镜头近心	25、100、200、300、500mm随机组合	0~500mm	class 1	B2	0.002mm	23570220	约10kg	0.1~500Hz
▼ 远心
LVE251C	单镜头远心	25mm	0~25mm	class 0.5	B1（标距4mm以上）	0.0001mm	2357575	约6kg	0.1~500Hz
LVE801C	单镜头远心	80mm	0~80mm	class 0.5	B1（标距10mm以上）	0.0003mm	235150150	约11.5kg	0.1~500Hz
LVE122C	单镜头远心	120mm	0~120mm	class 0.5	B1（标距20mm以上）	0.0005mm	235200200	约15kg	0.1~500Hz
LVE801D	双镜头远心	80mm（双向平均）	0~80mm	class 0.5	B1（标距10mm以上）	0.0003mm	235150150	约11.5kg	0.1~500Hz
LVE122D	双镜头远心	120mm（双向平均）	0~120mm	class 0.5	B1（标距20mm以上）	0.0005mm	235200200	约15kg	0.1~500Hz

近心镜头视频引伸计与远心镜头视频引伸计的区别

远心镜头对试样平面外运动造成的潜在误差不敏感:试样靠近或远离镜头，相机传感器所看到试样的图像跟试样本身大小相同。在测试过程中，即使试样厚度变化或夹具从测试轴(或平面)移出，也能保持应变测量精度。

Why Choose Us?

• We provide 7×24 technical consultation, operator training, and timely software updates.
• We offer remote monitoring of equipment status, enabling rapid diagnosis and resolution when abnormalities occur.
• Keeping up with the latest development of widely adopted international standards from ASTM, ISO, etc. to ensureyour test results relevant and credible
• Maximizing your lab investment returns with tailored solutions to your unique needs from cost effective hardware tosoftware customization
• We treat everyone, be it clients, colleagues or partners, with honesty and sincerity.
• Staying at the forefront of testing technologies that continuously improve test accuracy, repeatability, and eficiency