Medical Beauty & Personal Care
678nm 5mW VCSEL SMD
678nm 5mW VCSEL SMD laser diode with an annular beam and 2835 package for laser hair-growth helmets, scalp PBM devices and PCB integration.
Specifications
- Product Type
- VCSEL SMD
- Wavelength
- 678nm typ.
- Optical Output Power
- 5mW typ.
- Transverse Mode
- Multi-mode VCSEL
- Operating Mode
- QCW
- Beam Divergence
- 22° typ.
- SMD Package Options
- 2835
1. 678nm VCSEL SMD for Laser Hair-Growth Device Development
The 678nm 5mW VCSEL SMD is a visible-red laser source supplied in a compact 2835 surface-mount package. It is designed primarily for the development and evaluation of laser hair-growth helmets, laser caps and scalp photobiomodulation devices.
The 2835 SMD package supports compact PCB layouts, automated component placement and multi-emitter optical assemblies. It provides device developers with greater integration flexibility than conventional leaded laser packages, particularly in wearable products with limited internal space.
This component is intended for 678nm- and 680nm-class hair-growth device development. It does not represent a claim regarding the medical efficacy, clinical performance or regulatory approval of any finished device.
2. Core Optical Characteristics and 2835 Package
The VCSEL has a typical center wavelength of 678nm, with a specified wavelength range of 668–688nm. Its typical optical output power is 5mW, with a specified range of 4–6mW.
The device uses a multi-mode VCSEL structure and operates in QCW mode. It has a typical beam divergence of 22° and produces an annular, donut-shaped beam spot rather than a Gaussian or solid-center beam.
During system design, developers should evaluate the annular beam profile together with the emitter spacing, working distance and optical arrangement. Complete system-level testing is required to determine scalp irradiance distribution, optical dose and operating conditions.
The 2835 package measures approximately 3.5 × 2.8mm and is suitable for compact rigid or flexible PCB assemblies, wearable scalp devices and multi-VCSEL layouts.
3. Applications
Laser Hair-Growth Helmets
The 678nm VCSEL SMD can be evaluated as a light source for laser hair-growth helmet development. Engineers can configure multiple emitters according to the helmet area, emitter quantity, VCSEL spacing, drive method and working distance.
Hair-Growth Laser Caps and Wearable Scalp Devices
The compact 2835 package is suitable for laser caps, scalp-light bands and other space-limited wearable products. Multiple VCSEL devices can be arranged on rigid or flexible PCBs according to the mechanical and optical design.
Scalp Photobiomodulation Systems
The device can be used for the development, optical testing and prototype validation of 678nm scalp photobiomodulation systems.
Developers must independently validate irradiance, optical dose, operating time, thermal management and complete-device safety.
Hair-Growth Combs and Localized Scalp Devices
For laser combs, localized scalp-light devices and small-area directional light sources, this product can be evaluated as a low-power visible-red VCSEL solution.
678nm- and 680nm-Class Product Benchmarking
The device may also be evaluated by developers benchmarking 680nm-class laser hair-growth helmet systems, including Theradome-class product architectures.
This statement refers only to application direction and system-development benchmarking. It does not claim brand affiliation, direct compatibility or replacement of any existing branded laser component.
4. Evaluation Kit and Documentation Support
The 678nm 5mW VCSEL SMD is available as an Evaluation Kit for optical, electrical, thermal and PCB assembly verification.
- 10 pcs / KIT
- 2835 VCSEL SMD samples
- Product datasheet and package-dimension documentation
- International shipping quoted according to destination
- Center wavelength, wavelength tolerance and optical power-bin requirements can be discussed for qualified projects
For component-level project evaluation, an Initial Product Report covering the Laser Diode Series and VCSEL Laser Diode Chip Series has been filed with the U.S. FDA CDRH. This filing supports technical documentation and product evaluation.
For applicable products, CE, EMC, EN 60825, LVD, RoHS, REACH and halogen-free certification and compliance documents are available. Documentation depends on the corresponding product model and does not represent certification of the customer’s finished hair-growth device.
5. Frequently Asked Questions
FAQ 1. What are the main optical specifications of this 678nm VCSEL SMD?
The device has a typical center wavelength of 678nm, with a specified wavelength range of 668–688nm. Its typical optical output power is 5mW, with a specified range of 4–6mW.
It operates in QCW mode, has a typical beam divergence of 22° and produces an annular, donut-shaped beam spot.
FAQ 2. What types of laser hair-growth devices can use this VCSEL?
The device is intended for the development and prototype evaluation of laser hair-growth helmets, laser caps, scalp photobiomodulation equipment, laser combs and localized scalp-light devices.
The device developer must validate emitter quantity, working distance, driving conditions, operating time, irradiance distribution, thermal performance and complete-system safety.
FAQ 3. Can this 678nm VCSEL SMD be evaluated for Theradome-class laser hair-growth helmet development?
Yes. It can be evaluated as a component option for 678nm- and 680nm-class laser hair-growth helmet projects.
However, direct compatibility or replacement is not claimed. Developers must verify the center wavelength, wavelength tolerance, optical power, beam profile, divergence, package dimensions, driving conditions and complete-system optical dose for the intended design.
