What is the RH41 UV LED flashlight used for?

RH41 UV is used for handheld fluorescence excitation, UV inspection, Anisakis observation, fluorescent penetrant inspection and similar applications that require portable ultraviolet illumination.

Which UV wavelengths are available in the RH41 UV series?

The RH41 UV series includes 365 nm, 370 nm and 375 nm UV models. A 375 nm model with a filter is also available.

Is RH41 UV suitable for large or complex-shaped samples?

Yes. The handheld flashlight format is useful when the sample is large, uneven or difficult to place under a fixed light source.

Is eye and skin protection required when using UV LED flashlights?

Yes. UV light can be hazardous to eyes and skin. Use appropriate UV protective eyewear, avoid direct exposure and follow laboratory safety procedures.

Excitation LED

LED Flashlight - RH41 UV

Portable UV LED flashlight for fluorescence excitation, UV inspection and Anisakis observation

The RH41 UV Series is a handy mobile LED flashlight using 41 UV LEDs for wide-area illumination. It is useful when the sample is large, irregularly shaped or difficult to place under a fixed excitation light source.

Available models include 365 nm, 370 nm and 375 nm UV wavelengths.
The RH41-U375F model includes a filter for applications where reduced visible leakage or improved fluorescence contrast is required.

365 nm UV 370 nm UV 375 nm UV 41 LED Array Portable Inspection

Overview Models & Price Specification UV Safety Filter Guide

Handheld UV Illumination for Fluorescence Excitation

RH41 UV LED flashlight for fluorescence excitation

RH41 UV LED flashlight series.

41 shell-type UV LED arrangement.

RH41 UV is designed for free-hand illumination during fluorescence excitation, UV inspection and visual screening. The flashlight format provides flexibility for samples that are difficult to inspect with a fixed microscope light or transilluminator.

Equipped with 41 shell-type UV LEDs for broad illumination.
Portable battery-powered format for field, bench-top and inspection use.
Useful for fluorescence excitation, fluorescent penetrant inspection and UV inspection workflows.
Convenient for Anisakis detection or observation where handheld UV illumination is preferred.
High-quality LED design with long service life under normal operating conditions.

Application note: UV wavelength, sample fluorescence, ambient light and emission filtering all affect visibility. For fluorescence observation or imaging, match the UV source with the sample and the appropriate observation filter.

Models & Price

Product	Item Code	Price
Handy LED Flashlight 41 shell type LED / UV 375 nm	RH41-U375N	US$ 250
Handy LED Flashlight 41 shell type LED / UV 375 nm + Filter	RH41-U375F	US$ 370
Handy LED Flashlight 41 shell type LED / UV 370 nm	RH41-U370	US$ 260
Handy LED Flashlight 41 shell type LED / UV 365 nm	RH41-U365	US$ 360

Specification

Power	3 W
Size	Length: 140 mm / Emission end: approximately 50 mm diameter / Battery end: approximately 32 mm diameter
Power Source	AAA battery x 4, included with purchase
Weight	Approximately 260 g with batteries

LED Specification

Item	RH41-U365	RH41-U370	RH41-U375N
LED Maker	Nitride Semiconductors	Nitride Semiconductors	Nichia
Peak Wavelength	Min. 363 nm Max. 370 nm	Min. 370 nm Max. 375 nm	Min. 370 nm Max. 380 nm
LED Directivity	15°	15°	40°

UV Intensity Reference Value

Distance 10 cm / No protective filter

Model	RH41-U365	RH41-U370	RH41-U375N
UV Intensity	1800 µW/cm²	2600 µW/cm²	5800 µW/cm²

UV Safety and Observation Notes

UV safety: Do not look directly into the UV LED beam. Use suitable UV protective eyewear, avoid direct skin exposure and follow your laboratory or workplace safety rules.

Fluorescence note: RH41 UV provides excitation light only. Fluorescence visibility depends on the material, UV wavelength, ambient lighting and optical filtering. For photography or microscope observation, an emission filter may be required to reduce excitation light and improve contrast.