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UV/LED

UV/LED

Active Alignment Process in Optoelectronic Manufacturing

Active Alignment Process in Optoelectronics Active alignment is a precision assembly process used primarily in optical systems—such as camera modules, fiber-optic transceivers, LiDAR units, and photonic sensors—to ensure optimal coupling efficiency between optical components (e.g., lenses, lasers, fibers, photodiodes).Unlike passive alignment, which relies on mechanical tolerances and fiducial references, active alignment continuously monitors optical performance during assembly and adjusts the position of components in real time to achieve peak optical…
Paven Patel
October 8, 2025
UV/LED

Cationic vs Free Radical Reaction: Epoxies and Acrylate UV Cure Adhesives

Free-Radical Curing Mechanism Used for: Acrylates, methacrylates, unsaturated polyesters, styrenics, vinyl monomers. Initiation:Free-radical initiators (e.g., peroxides, azo compounds, or UV photoinitiators) generate radicals under heat or light.Example: R−O−O−R→ 2R⋅R-O-O-R  Propagation:The radical adds to a vinyl group (C=C), creating a growing chain radical. R⋅+CH2=CHX→R−CH2−CHX⋅R Termination:Two radicals combine or disproportionate, stopping growth. R⋅+R⋅→R−RR Very fast polymerization. Works with a wide variety of monomers. Common in UV-cure adhesives and 3D printing resins. Limitations:…
Paven Patel
October 3, 2025
ElectronicsEpoxy AdhesiveUV/LED

Active Alignment Adhesives

What is active alignment? Active alignment refers to the process of fine-tuning or precisely aligning components, typically optical or mechanical systems, while the system is actively operating. This method is commonly used in the manufacturing and assembly of high-precision devices, such as cameras, sensors, and optical instruments. In contrast to "passive alignment," where components are assembled based on predetermined measurements or templates, active alignment adjusts the components in real-time while…
Paven Patel
October 2, 2024
ElectronicsUV/LED

Advantages of UV Cure Epoxy

Cationic epoxy, more commonly UV cure epoxy, refers to a type of epoxy resin system that cures through a cationic (positively charged) polymerization mechanism. Epoxy resins are polymers widely used in various industrial applications, including adhesives, coatings, and composites, due to their excellent adhesive properties, chemical resistance, and mechanical strength. In a cationic epoxy system, the curing process involves the reaction of epoxy groups (usually present in the resin) with…
Paven Patel
March 27, 2024
ElectronicsUV/LED

Active Alignment Adhesive: FLASHBOND UV-3720

Epoxyset, a leading manufacturer of epoxy adhesives, introduces its FLASHBOND UV-3720, a light and/or heat-curable cationic epoxy specifically designed for active alignment applications. These include camera modules, optical components, LiDAR (Light Detection and Ranging), and other ADAS (Advanced Driver Assistance Systems) assemblies used in automotive applications. During the optical assembly process of many components need to be positioned exactly and efficiently. Types of assemblies include lenses in cameras, CCD chips,…
Paven Patel
February 21, 2024
Recent-newsEpoxy AdhesiveUV/LED

FLASHBOND UV-3607HT NOMINATED FOR PRODUCT OF THE YEAR

Epoxyset is proud to announce the nomination of its new UV/Heat cure epoxy, FLASHBOND UV-3607HT for Product of the Year at the Assembly Show 2021 in Rosemont, IL. This is second year (2019) Epoxyset has been nominated for this award. You can read the details from Assembly Show website here. Visit us at Booth 1811 at the Donald E. Stephens Convention Center in Rosemont, IL on Oct. 25-28 to learn…
Paven Patel
October 14, 2021
ElectronicsEpoxy AdhesiveUV/LED

FLASHBOND™ UV-5608DC Light Activated, Delay Cure Epoxy Adhesive

Delay Cure Epoxy Adhesive Epoxyset introduces a ground-breaking, light cure chemistry that allows fast processing and fixturing of parts even if both parts are opaque. This is known as a delay cure epoxy adhesive.  UV-5608DC is one of a series of epoxy adhesives that can be activated by 405nm light with an intensity of about 150mW/cm2 for 5-10 seconds.  Parts are mated together and aligned within 45-60 seconds of activation.…
rob_bdc
August 19, 2019