News
1、 Narrowband filters in optical thin films have a wide range of applications in optical communication systems. They have the advantages of narrow passband, low insertion loss, and good temperature stability. Narrowband filters are commonly used for orthogonal incidence and are typically directly solidified for collimators. However, with the development of science and technology, narrowband filters with oblique incidence are often needed. When light is obliquely incident, the polarization dependent loss of the narrowband filter increases, and the peak and bandwidth of the narrowband filter will shift towards short wave
Flow cytometry (FCM) is a cell analyzer used to detect the fluorescence intensity of stained cell markers. It is a high-tech method for rapidly measuring and collecting physical or chemical properties of cells, such as size, internal structure, DNA, RNA, proteins, antigens, etc. Based on the analysis and classification of single cells. Working principle introduction: Using laser as the excitation source to ensure better monochromaticity and excitation efficiency; By combining fluorescent dyes and monoclonal antibody technology,
Friends who have used laser marking machines know that the marking depth of laser marking machines can be freely adjusted, but there are still many people who do not know this when they first come into contact with laser marking machines. I even found that they ask Du Niang: How to adjust the marking depth of laser marking machines? Today, I will talk to you about how to adjust the marking depth of the laser marking machine. 1、 Increasing the power of the laser can directly increase the depth of laser marking, but the prerequisite for increasing the power is to ensure the laser power supply and laser water cooling
Shortwave blue light is light with high energy between 400 nm and 480 nm. This wavelength of blue light increases the toxin content in the macular area of the eye, posing a serious threat to the health of the fundus. Blue light causes blindness. At present, an effective solution is to apply movies to television. The anti blue light coating technology is mature, low-cost, and can effectively prevent the penetration of blue light. Especially, it should be pointed out that not all blue light is harmful, the truly harmful blue light is between 400 and 440
A polarizing beam splitter prism can split incident unpolarized light into two perpendicular linearly polarized lights. P-polarized light passes through completely, while S-polarized light reflects at a 45 ° angle and exits at a 90 ° angle to the P-light. A polarizing beam splitter is composed of a pair of right angled prisms. One of the prisms is coated with a polarizing splitting dielectric film on its inclined edge. Material: K9 or ZF glass, dimensional tolerance: ± 0.2mm extinction ratio: single wavelength>500:1,>1000:1
When choosing a laser marking field mirror, three aspects should be considered: 1. It should be matched with the equipment used. 2. It should be matched with the marking requirements. 3. Of course, we should also cooperate with the vibrating mirror, so when you purchase it, you must make a choice based on the following aspects. 1、 How long wavelength field lens is needed? The wavelength can generally be matched with the machine, and many customers do not know how many wavelengths their machine has. Generally speaking, we use the following waves: non-metallic machines to make
The first channel long wave infrared ultra narrowband filter of the atmospheric detection infrared spectrometer is specifically designed to detect the concentration of CO2 gas in the atmosphere. Therefore, the optical performance of the filter should be designed based on the characteristic absorption peak of CO2 gas in the atmosphere. The main technical specifications of the first channel filter in the NOAA system atmospheric infrared spectrometer in the United States are: center wavelength of 14.95um, bandwidth of 0.067um
The solar simulator is an instrument used to test the evaluation indicators of solar cells, such as short-circuit current Isc, open circuit voltage Voc, and fill factor ff. Introduction: The main host for testing the evaluation indicators of solar cells includes a 1000W xenon lamp light source, an optical integrator, and an atmospheric mass of AM=sec θ with a solar constant value of 1353W/m2. Table of Contents: 1. Basic Structure: 2. Basic Principles: 3. Operating Rules: Basic Structure: Solar Simulation
Advantages of narrowband filter products: Single piece narrowband filter coated with hard film, long service life, wavelength positioning ion evaporation, small temperature drift, strict production process control, small product size and optical index errors, imported ultra-thin optical glass, high transmittance, good smoothness, small thickness tolerance, good flatness and other optical characteristics. Adopting imported coating equipment ion sputtering coating process, it has the characteristics of high film firmness, good spectral uniformity, and strong center wave stability. Narrow
Fluorescent filters, also known as fluorescent filters, are widely used in various fields. Its main function is to separate and select the excitation and emission spectra of substances. Fluorescent filters typically use a transparent glass substrate and are coated on both surfaces. The thickness of the anti reflection film will be selected as an integer multiple of half the wavelength, at which point the reflection superposition will be enhanced. The anti reflection thickness is a multiple of a quarter wavelength, and the superposition is enhanced at this time. Fluorescent filters include various types of fluorescent filters, typically