In scenarios such as spectral calibration, optical component detection, material transmission and reflection analysis, infrared spectrum research, and teaching spectral experiments, most conventional light sources have problems such as discontinuous spectra, rapid light flux attenuation, large long-term drift, and insufficient infrared energy. Especially in steady-state testing of the near-infrared band, weak light signal acquisition, and long-term spectral monitoring, the slight energy fluctuations and spectral line deviations of the light source will directly lead to experimental data dispersion, poor repeatability, insufficient calibration accuracy, and seriously affect the reliability of scientific research results and the accuracy of industrial detection.

The Sefan Optoelectronics 7ILT250A tungsten halogen light source is a high-power and highly stable reference light source specifically designed for precise spectral testing in the visible-near infrared range. It is equipped with a 250W tungsten halogen lamp core from German Osram, combined with a precise quartz collimating optical path and an adaptable linear constant current power supply system. With its core advantages of ultra-wide continuous spectrum, extremely low light attenuation, high luminous efficiency output, and long-term stable controllable characteristics, it becomes the standard main light source for spectral analysis, optical calibration, material optical characterization, and teaching experiments, perfectly filling the energy gap of xenon light sources in the near-infrared band.

Full-band continuous spectrum, visible and near-infrared energy balanced and abundant

The 7ILT250A has an ultra-wide continuous spectrum coverage range of 300?2500nm, covering the entire range from ultraviolet to visible light and near-infrared. The spectral curve is smooth and continuous, without breaks or defect of impurity peaks. The standard color temperature is stable at 3000?3200K, with pure light color and uniform energy distribution. The near-infrared band has abundant energy, perfectly suitable for infrared spectrum analysis, near-infrared material detection, and optical component wide-band response calibration. Compared to the shortcomings of conventional light sources with weak infrared energy and incomplete spectral lines, this light source can achieve balanced output across the entire band, precisely matching the reference light requirements of various precise spectral experiments.

Imported lamp core with ultra-low light attenuation, extremely strong spectral consistency throughout the entire range

The equipment is equipped with an original imported HLX64657 professional research-grade tungsten halogen bulb, with stable light emission performance and excellent anti-decay ability. The light bulb retains 95%?98% of the light flux throughout its lifespan, with almost no significant light intensity attenuation or spectral shift throughout the entire range. This completely solves the problems of low initial brightness and rapid attenuation, severe spectral drift of ordinary domestic tungsten halogen lamps, eliminating the need for frequent parameter calibration, and achieving full consistency in long-term experiments and batch detection data, significantly reducing experimental calibration costs and equipment operation frequencies.

Precise collimating optical path design, high luminous efficiency, small light spot, high coupling rate

Using a double quartz lens precise collimating optical path architecture, the optical path loss is extremely low, and the light energy utilization rate is significantly improved. The rated light flux can reach 9000lm, the light output is concentrated and regular, the minimum light spot is only 5mm×10mm, precisely adapting to small aperture optical systems, fiber coupling, and small sample testing. The beam collimation is excellent, the edges are clear without stray light, and it can seamlessly connect with monochromators, spectrometers, integrating spheres, and fiber testing systems. The optical path coupling efficiency is high, no complex dimming is required, and a high-precision standardized spectral testing platform can be built.

Compatible with linear constant current drive, long-term stable without drift

It can be used in conjunction with Sefan's exclusive constant current power supply system. Relying on precise constant current control technology, it completely suppresses current ripple and temperature drift, with minimal fluctuations in light flux throughout the entire machine's continuous operation, eliminating problems of light intensity jumps and baseline shifts during long-term experiments. It can perfectly support 7×24-hour uninterrupted stable monitoring, long-term aging light illumination of materials, and dynamic spectral tracking under strict conditions, with output stability and experimental reproducibility far exceeding that of ordinary constant voltage drive light sources.

Long lifespan, easy maintenance, lightweight, and integrated for multiple scenarios

The imported lamp core has a long service life and is suitable for frequent start-stop and continuous operation in laboratories. The lamp holder adopts standardized modular design, allowing users to quickly replace the bulb independently without professional optical path adjustment, significantly reducing long-term operation costs. The entire machine has a compact structure and is lightweight and integrated. It is easy to install and does not occupy experimental space. It operates quietly without interference, and will not affect the normal operation of surrounding precision detectors and optical instruments. It is suitable for routine scientific research and teaching in laboratories.

Highly versatile and easy to expand, suitable for general optical experiments in all scenarios.

The 7ILT250A tungsten halogen light source has extremely strong expandability. It can seamlessly be matched with all models of Sifan monochromators, spectrometers, and optical testing platforms, quickly building an integrated photoelectric testing system. It is widely applicable to optical device transmittance/refractive index testing, wide-band calibration of photoelectric detectors, near-infrared spectroscopy analysis, material optical property characterization, basic optical teaching experiments, and precise instrument calibration in scientific research, teaching, and industrial inspection scenarios. It is an indispensable reference light source device in the visible-near-infrared wavelength band.

300?2500nm ultra-wide continuous spectrum | Imported filament with ultra-low light attenuation | Double quartz with high luminous efficiency for focusing | Long-term stable without drift | Modular and easy to maintain | High compatibility of the entire optical system

Precise spectral testing relies on a stable reference light source. The Sifan photoelectric 7ILT250A tungsten halogen light source, with balanced full-band output, constant stable light efficiency, and low attenuation performance, builds a solid reference for visible and near-infrared spectroscopy experiments, continuously empowering precise optical research and industrial inspection upgrades!