What is a Piezo Ojective Scanner?
Piezo objective scanner is specially designed for objective focusing microscopy. Configured with non - regressive flexible hinge parallel steering mechanism, it has small compensation quantity and high focusing stability. Piezo objective scanner with microscopic inspection/measurement or observation device, can drive the objective lens to focus and adjust Z-axis motion. It can be used with a variety of high resolution microscopes to improve the focusing accuracy of the objective to nanometer.
Application of High-load Piezo Objective Scanner
The large-load piezo objective scanner has a large load capacity, up to 900g or even higher, which can be used for heavy load piezo objective scanner.
1、Laser Wafer Invisible Cutting
Laser wafer invisible cutting, is to focus the lasers through lens, and then the position of the focus is precisely adjusted by the piezo objective scanner, so that the focus is precisely positioned at the part of the wafer to be cut. The temperature of the part to be cut rises rapidly, and then it is melted or vaporized. With the laser and the relative movement of the cutting material, a plurality of points is formed on the cutting material.
2、Improving the Focusing Accuracy of Ordinary Microscopes
The fine-tuning distance of the piezo objective scanner can be controlled by the piezo controller. The variable output voltage of the piezo controller corresponds to the zero-to-full stroke displacement of the piezo objective scanner, and the two have a linear relationship. The fine-tuning distance of the piezo objective scanner can be controlled by changing the variable output voltage of the piezo controller. Compared to ordinary microscope hand wheel adjustment, the focusing accuracy is higher up to the nanometer level.
3、Applied to Super-resolution Microscopic Imaging
Microscopic optical imaging refers to the technology of magnifying images of tiny samples from the visible light reflected through or from samples. Super resolution (SR) microscopy is a broad concept to describe the emerging optical microscope. Although conventional optical microscopes can achieve 100 nanometers resolution , this ultra-resolution technology can achieve higher resolution even up to tens of nanometers. The SR microscope uses specific fluorescent probe properties to separate the photons emitted by two closely spaced fluorescent sources so that they can be imaged separately, avoiding diffraction limits and allowing the dynamic effects of cells in the nanoworld to be observed.
New super-resolution techniques, such as stimulated emission loss microscopy, light-activated localization microscopy and random optical reconstruction microscopy, have reduced resolution from 100-200 nm to even lower. Piezo objective scanners with nanometer resolution is ideal for these applications. The alignment of the microscope and the sample stand requires accurate and rapid movement. Piezo objective scanner based on high resolution piezo ceramics can provide unique ultra-precision technology support.
4、Laser Lithography, Optical Disk Data Storage
The photolithography process means that the photolithography substrate placed on the electric platform rotates and moves along with the electric platform, and the acoustooptic modulator controls the strength of light beam to expose the photolithography at varying doses. Usually, the positioning accuracy of the electric platform reaches micron or submicron magnitude. However, the pitch error and deviation of the electric platform caused by inertia, static friction and loosening will directly affect the performance of the system and the quality of the lithographic elements. With the nanoscale accuracy, stable performance and convenient operation, Coremorrow piezo objective scanner would be an ideal choice for scanning motion platform in lithography equipment.
5、White Light Interference and 3D End Face Detection
White light interference technology takes visible light as the light source. The white light emitted by the light source reflects half of the light intensity in the semi-transmitted optical plane after passing through the interference objective lens, and the other half of the light intensity is transmitted and irradiated on the surface of the measured object and reflected again into the interference objective lens, which interferes with the reflected light in the original optical plane. With Coremorrow piezo objective scanner, the accuracy can achieve nanometer resolution.
At present, optical interference is commonly used to measure the optical fiber end face. Optical interference is based on the coherent light encounter in space, which enhance or weaken in different areas, forming a stable strong and weak distribution. The 3D interferometer system is designed on this principle. interference fringes can be observed by CCD camera, Coremorrow piezo objective scanner is used to move the interference objective lens to produce phase movement, the image measured by CCD camera is transmitted to the computer by image card for analytical processing. Interference fringes are read by CCD camera after each step, and the end face shape is calculated according to the distribution of interference fringes.
CoreMorrow Large Load Piezo Objective Scanner
For more details, please contact CoreMorrow by calling 0451-86268790, 17051647888 (Wechat ID)!