In the fields of precise spectroscopy analysis, material characterization and optical detection, continuous, stable and wide-band light source output is the key factor determining data accuracy and the success or failure of experiments. For a long time, a single light source has been unable to balance the deep ultraviolet and near-infrared strong spectra. Band switching often involves problems such as optical path deviation, energy attenuation and repeated calibration. Saifan Optoelectronics has adopted innovative back-transmissive optical path technology to launch the 7ILC1051/7ILC2801 back-transmissive composite light source, which perfectly integrates deuterium lamps and halogen tungsten lamps, achieving an ultra-wide continuous spectrum of 200nm–2500nm, providing an ideal light source solution for high-precision transmission, reflection and absorption measurements with "one-time integration, full stability throughout, and full spectral coverage".
I. Backscatter Fusion: Integration of Two Lights, Full-Spectrum Seamless Coverage
Breaking through the traditional composite light source's "mechanical switching, spectral discontinuity" bottleneck, the Saifan backscatter composite light source adopts a 30W backscatter diode lamp + 75W/250W tungsten halogen lamp innovative architecture. Through precise optical design, the tungsten halogen lamp beam is precisely imaged onto the diode lamp filament first, and then the two light sources are jointly focused to the light output port to achieve seamless superposition of ultraviolet-visible-near-infrared spectra:
Strong deep ultraviolet output: The diode lamp provides a stable ultraviolet spectrum line of 200–400nm, meeting the ultraviolet absorption and transmittance testing requirements for semiconductor films, optical glass, and organic materials.
Enhanced visible-near-infrared: The tungsten halogen lamp covers a wide spectrum of 400–2500nm, and at around 360nm, it superimposes energy with the diode lamp, forming an ultraviolet enhancement transition zone, completely eliminating the energy depression in the junction wavelength band of a single light source.
Independent control of the two lights: They can be simultaneously lit, operate independently, or output separately at different times. Each light source maintains independent stability, without switching the optical path, no deviation, and no attenuation. Once installed, it can cover the full wavelength band measurement, saying goodbye to the inefficient process of frequent lamp replacement and repeated calibration.
II. Ultimate Stability: Long-term Zero Drift, Highly Reliable Data
Spectral measurement is extremely sensitive to light intensity fluctuations, and stability directly determines the credibility of the data. The Saifan composite light source uses triple stability technology to ensure long-term high-precision output:
Independent power supply stabilization: The two lights adopt separate constant current power supplies, with light power fluctuations of <±0.5%, continuous operation for 8 hours without significant attenuation, ensuring the accuracy and reproducibility of each set of transmittance and reflectance data.
Precise optical path coupling: Backscatter coaxial design, the light spots of the two lights are completely overlapping and centered without offset, eliminating the need to re-align the light or adjust parameters when switching wavelengths, significantly improving experimental efficiency and consistency.
Efficient heat dissipation and long lifespan: Optimized air duct and temperature control system effectively suppress the thermal drift of the lamp body; the diode lamp has a lifespan of up to 2000 hours, and the tungsten halogen lamp up to 3000 hours, reducing the cost of consumables replacement and lowering the long-term usage cost.
III. Flexible Adaptation: Modular Design, Compatible in All Scenarios
For the diverse testing needs of laboratories, the 7ILC series adopts a high compatibility and easy integration feature, easily adapting to mainstream spectral systems and experimental devices:
Standard interfaces and reserved expansion: The light source is equipped with an SR540 optical power meter interface, which can monitor the output energy in real time, achieving precise quantitative and closed-loop calibration.
Dual power model selection
7ILC1051 (75W tungsten halogen lamp): Suitable for conventional ultraviolet-visible-near-infrared testing, liquid absorption spectroscopy, and optical constant characterization of films.
7ILC2801 (250W tungsten halogen lamp): With stronger near-infrared energy, suitable for high-absorption samples, diffuse reflection measurement, photothermal spectroscopy, and in situ reaction testing.
Flexible light path output: 6° collimated beam, uniform light spot, can be directly coupled to monochromators, optical fibers, ellipsometers, and spectrophotometers, compatible with the entire series of Saifan spectral equipment and domestic and international mainstream optical systems.
IV. Core Applications: Covering High-End Research and Industrial Precision Testing
With its wide spectrum, stable, seamless, and coaxial advantages, the Saifan backscatter composite light source has become a benchmark light source in spectral analysis, material research, semiconductor testing, and environmental monitoring:
Precise optical measurement: Film thickness and refractive index testing, optical glass transmittance calibration, spectral characterization of filters/ lenses, precise measurement of reflectance/absorption rate.
Advanced material research: Ultraviolet-near-infrared absorption spectra of two-dimensional materials, calcium phosphate, quantum dots; diffuse reflection and transmission characteristics analysis of polymers, ceramics, and metals.
Environmental and chemical analysis: Ultraviolet absorption of water COD/NO₃⁻/ organic substances, infrared characteristic spectra of gases, in situ monitoring of photocatalytic reaction kinetics. Semiconductor and Device Testing: UV Sensitivity of Photoresist, Spectral Response of LED Chips, Quantum Efficiency (QE/IPCE) Testing of Photovoltaic Materials.
V. Sevan's Craftsmanship: Twenty Years of Dedication, Benchmark of Domestic High-End Light Sources
As a leading enterprise in the field of spectral instruments in China, Sevan Optoelectronics has been deeply engaged in precision light sources and spectral technology for twenty years. Its products have passed ISO9001 quality system certification, and its core technologies have obtained multiple national patents. Each 7ILC backside-through composite light source has undergone strict spectral calibration and aging tests, providing a two-year whole machine warranty and a four-hour rapid response professional after-sales service.
From the cutting-edge basic research in the laboratories of the Chinese Academy of Sciences to the industrial quality inspection in enterprise R&D centers; from spectral teaching experiments in universities to online quality control in semiconductor production lines, Sevan's composite light sources, with stable and reliable performance, precise and wide spectrum, efficient and easy-to-use features, help thousands of users break through measurement bottlenecks and produce high-quality data.
Choosing Sevan Optoelectronics' 7ILC1051/7ILC2801 backside-through composite light source is choosing a precise measurement experience with full spectral coverage, zero-gap stability, and one-click switching. With light as the blade, break through the limits of the spectral field; with quality as the foundation, build a foundation of precision. Sevan Optoelectronics uses professional light sources to empower every precise measurement, helping research and industrial inspection reach higher precision and efficiency!
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