Mini Tungsten Light Source

Overview

The LS-HM-P3 is a 2.5W mini tungsten light source weighing only 345g. Instant-on stability, micrometer precision attenuation and a 1.2W long-life mode reaching 100,000 hours combine low power, small size and extreme longevity for portable devices, online monitoring and OEM integration - the lowest energy and maintenance cost in the series.

1. Key Features

• Instant stable output: Tungsten-halogen lamps usually need warm-up; this unit is stable at power-on - ideal for test stations with frequent on/off cycles.
• Precision constant-current control: The constant-current source holds intensity stable against ambient temperature; drift stays small over long acquisitions.
• Adjustable intensity, precision mechanical attenuation: The micrometer adjusts output without changing filament current, so color temperature stays constant and spectra are identical across intensity levels.
• Low power, high efficiency: The IntllightTech stainless-steel cylindrical bulb has a built-in lens; with secondary collimation, 2.5W input achieves throughput exceeding a 20W G4 bulb - minimal heat and energy use.
• High-purity xenon protection, ultra-long bulb life: >2000 h at 2.5W high-brightness mode; >100,000 h at 1.2W long-life mode - nearly maintenance-free.
• Compact and portable: 110 x 80 x 40 mm, 345 g - easily embedded in portable spectroscopy systems or online analyzers.

2. Specifications

3. Appearance

Product appearance

Structure and dimensions

Relative power spectral distribution

4. Working Principle

4.1 Design idea of a low-power source

Conventional halogen sources use 20W+ bulbs for sufficient throughput, at high power and heat. The LS-HM-P3 uses a lensed cylindrical bulb that pre-collimates filament light; a secondary collimator focuses it into the fiber, raising energy utilization so 2.5W covers most transmittance and reflectance needs.

4.2 The long-life mode

Filament life is directly tied to operating temperature; lowering power extends it dramatically. The 1.2W long-life mode reaches 100,000 hours for 7x24 online or unattended measurement; switch back to 2.5W when more intensity is needed.

4.3 Instant-on and constant-current control

Constant-current drive reaches rated filament current immediately - no warm-up. With current locked, output intensity is insensitive to ambient temperature and supply voltage, keeping the baseline stable over long measurements.

5. Common Setups

6. Setup and Measurement Steps

Online liquid measurement example:

1. Connect the LS-HM-P3 to 12V/1A; output is stable immediately.
2. Connect the source to the flow cuvette holder with an SMA905 fiber; connect the output to the fiber spectrometer.
3. Start SmartSoft, set integration time and acquire dark background and blank reference.
4. Start liquid pumping; spectra are acquired continuously as the sample flows, with real-time transmittance or absorbance.
5. If saturated, lower intensity with the micrometer; if weak, switch to 2.5W mode or extend integration time.

7. Applications

• Portable spectroscopy systems paired with small fiber spectrometers.
• Water quality and process monitoring: low power suits battery- or solar-powered stations.
• Rapid lab screening: instant-on for high-throughput transmittance/absorbance work.
• Teaching instruments: compact source for spectrophotometry labs.
• Embedded integration: small size and simple 12V/1A power for OEM equipment.

8. Spectrometer Pairing

2.5W throughput drives conventional cuvette and reflectance setups; for long paths or strongly absorbing samples, switch to high-brightness mode and extend integration time.

9. FAQ

Q: Is 2.5W really enough?
A: Yes. The lensed cylindrical bulb plus secondary focusing delivers throughput exceeding a 20W G4 bulb; standard cuvette and reflectance setups work normally.

Q: Is the 100,000-hour life real?
A: It is the theoretical life in the 1.2W long-life mode. Filament life depends strongly on temperature; the low-power mode lowers filament temperature enough for 100,000+ hours.

Q: Can it run on batteries?
A: Yes. 12V/1A DC at only 2.5W works with battery or solar power for portable devices.

Q: How does it differ from the LS-HM-C1?
A: The LS-HM-C1 is 10W with higher intensity; the LS-HM-P3 is smaller, more efficient and longer-lived - better for portable and online scenarios.

Q: Does it get hot?
A: At 2.5W, heat is minimal and no fan is needed - a key reason it suits OEM embedding.

Q: Can it be used for NIR measurements?
A: Yes. 350-3000nm covers NIR; pair with the NIR spectrometer series for NIR transmittance work.

Q: Why does 2.5W suffice?
A: The lensed bulb pre-collimates filament light and the secondary collimator focuses it into the fiber - far higher energy utilization than ordinary pin bulbs.

Q: Does it support OEM customization?
A: Yes. Housing color, logo marking, power specs and cable lengths can be customized - contact the Pynect commercial team.

10. Selection Guide

• Size, power and maintenance sensitive scenarios (portable, online, OEM): LS-HM-P3 first.
• Desktop lab general use: LS-HM-C1. Maximum intensity with UV compensation: LS-H100.

11. Precautions

• Use the 12V/1A adapter; never exceed rated voltage.
• Intensity drops in long-life mode; increase integration time as needed.
• Set intensity low before connecting fibers to avoid saturation.
• Use the dark shutter correctly during dark-spectrum acquisition.
• Bulb life is extremely long; if replacement is ever needed, power off, cool down and contact the manufacturer.

12. Package Contents and After-Sales

Package: LS-HM-P3 unit, 12V/1A adapter, SMA905 fiber patch cord, user manual, warranty card.

After-sales: one-year whole-unit warranty; bulbs are consumables covered by actual service life. Lifetime technical support and selection consultation with 7x24 response.

13. Ordering

• Product: LS-HM-P3 Mini Tungsten Light Source
• Series: Spectroscopy Light Sources
• Technical: Formulas for Common Spectral Measurement Modes

For sample trials or bulk purchases, please contact us.