What is the HDA Series LED twin-arm light used for?

The HDA Series is used as a flexible epi-light source for stereo microscope observation and fluorescence excitation. The twin arms allow the user to adjust the light angle from both sides of the specimen.

Which HDA model is suitable for blue-light fluorescence excitation?

HDA-TB3 is the 470 nm blue LED model. It is generally used for blue-light excitable fluorophores and stains such as GFP, FITC, SYBR Green and similar reagents when the optical filter set is appropriate.

Which HDA model is suitable for green-light fluorescence excitation?

HDA-TG3 is the 530 nm green LED model. It may be used for longer-wavelength fluorescence applications such as EtBr, DsRed, Cy3 and Alexa 532 type workflows when matched with a suitable emission filter.

Is an emission filter required for fluorescence observation?

Yes. For clear fluorescence observation or imaging, a suitable emission filter is normally required to separate fluorescence emission from the excitation light.

Excitation LED

LED Twin-Arm Light - HDA Series
Blue and Green Epi-Light for Fluorescence Excitation

Flexible dual-arm LED epi-lighting for microscope fluorescence observation

The HDA Series is a compact, piggyback-style LED twin-arm light designed for microscope fluorescence observation. The flexible dual arms allow the light angle to be adjusted from both sides of the specimen, making it easier to control shadows, surface relief and working distance while keeping heat generation low.

Blue 470 nm and green 530 nm LED models are available. For fluorescence use, select the excitation wavelength according to the reagent, specimen, emission filter and camera or observation system. A suitable emission filter is required for clear fluorescence observation.

470 nm Blue LED 530 nm Green LED White LED Twin Flexible Arms Low Heat Output

Models & Price Reagent Guide Optional Items Specification Filter Guide

Flexible Twin-Arm Epi-Light for Microscope Fluorescence Excitation

Single-color LEDs provide selected excitation wavelengths, avoiding UV/IR-heavy lamp output.

Compact piggyback-style design for stereo microscope installation.
Brightness adjustable while maintaining stable LED color characteristics.
Low heat output reduces thermal influence on specimens.
Twin flexible arms for adjustable angle and directional side illumination.
Emphasizes depth, surface relief and shadow contrast.
Approximately 30,000-hour LED life.

HDA Series LED twin-arm light for microscope fluorescence excitation

HDA Series compact twin-arm LED light installed on a microscope

Compact microscope installation
with flexible dual-arm illumination.

HDA Series set composition with LED twin-arm light and accessories

Main unit, AC-DC adapter and
microscope mounting adapter configuration.

Set Composition and Price

HDA Series models are supplied as a twin-arm LED main unit with AC-DC adapter and mounting adapter. The blue and green fluorescence models include a corresponding band-pass filter.

HDA-TB3 and HDA-TG3
come with a complimentary
blue/green band-pass
filter respectively
to enhance contrast.

Product	Item Code	Price
Blue LED Twin Arm at 470 nm main unit + Blue Band-Pass Filter + AC-DC adapter + Universal Mounting Adapter	HDA-TB3	US$ 960
Green LED Twin Arm at 530 nm main unit + Green Band-Pass Filter + AC-DC adapter + Universal Mounting Adapter	HDA-TG3	US$ 960
White LED Twin Arm main unit + AC-DC adapter + Universal Mounting Adapter	HDA-TW3	US$ 880

Compatible Reagent / Wavelength Guide

The following examples are a practical guide for selecting the excitation wavelength.
Please confirm the excitation / emission characteristics of the exact reagent and use a
suitable emission filter.

Model	LED Color / Peak Wavelength	Typical Fluorescence Applications
HDA-TB3	Blue LED / 470 nm	SYBR Green, FITC, GFP, EGFP and other fluorophores with excitation peaks around 470 nm; suitability of individual dyes depends on their specific excitation characteristics.
HDA-TG3	Green LED / 530 nm	EtBr, SYPRO Red, DsRed, Cy3, Alexa 532 and other longer-wavelength fluorescence workflows when matched with the correct filter set.
HDA-TW3	White LED / typical color temperature 5,500 K	General reflected-light stereo microscope observation, inspection, documentation and photomicrography.

Spectrum comparison of white blue and green HDA LED models

Spectrum image for white, blue and green LED models.

The information above is provided for reference purposes only. Actual results depend on various factors including the specific reagent, specimen condition, emission filter, microscope optics, camera sensitivity and ambient light. Please verify suitability for your application before use.

Optional Items and Related Products

YS05T

Related stereo microscope system for observation and documentation.

Olympus TG Set

Digital camera adapter set for microscope image documentation.

MFH-FL

Microscope filter holder for fluorescence observation and imaging.

LFH-FL

Filter holder option for matching observation filters to the fluorescence workflow.

Optional Filter	Item Code	Image	Price
Diffusion filter	HDA-DF (x2)		US$ 86.00
Polarized filter	PL-20 (x2)		US$ 86.00

Specification

LED Twin Arm - Main Body

Specification	HDA-TW3	HDA-TB3	HDA-TG3
Color	White	Blue	Green
Color Temperature / Peak Wavelength	4,500 K min. 5,500 K typ. 10,000 K max.	460 nm min. 470 nm typ. 490 nm max.	520 nm min. 530 nm typ. 550 nm max.
LED Life	Approx. 30,000 hours (*1)
Illuminance	More than 50,000 lx for one side	-	-
Power	10 W
Current System	Direct current system
Intensity Adjustment	Output-current controllable system
Intensity Range	0 - 100%
Operating Temperature	0 - 40°C
Operating Humidity	20% - 80% RH
Weight	820 g (*2)

*1 LED life: varies depending on the operating environment and usage conditions.
*2 Weight: mounting adapter excluded.

AC-DC Adapter

Item	Specification
Input Current	AC100V ±10%
Input Frequency	50 / 60 Hz
Output Current	DC12V 1A
Safety Regulation	PSE
Weight	110 g

HDA Series LED twin-arm light body dimensions

Main body and installation dimension reference.

Rear space comparison for compact HDA Series microscope light

Compact design helps save rear space behind the microscope.

LED Twin-Arm Light - HDA SeriesBlue and Green Epi-Light for Fluorescence Excitation