LiDAR primarily consists of components such as a transmit module, a receive module, a scanning module, and a control module; this article discusses the application of adhesive in LiDAR transmit modules.
Bonding of the laser to the collimator
Product requirements for adhesives: rapid initial set, low coefficient of expansion, strong bonding strength, extremely low shrinkage rate, no gas volatilization during curing, resistance to chemical corrosion, and the ability to maintain bonding speed at low temperatures in specialized applications.
Recommended Product: JM3410 Series
Product Features:
Expansion coefficient: below 20 ppm/℃
With an “extremely low” contraction rate, there is no displacement of the workpiece during thermal curing that would affect the light source; therefore, it can be used for high-precision optical-path positioning.
Dual curing method: rapid UV pre-curing followed by heating to enhance structural strength, while curing areas that have not been exposed to the UV light.
The curing process involves no volatilization and will not affect the light source.
It offers excellent chemical resistance; when used in robotic floor cleaners, for example, it will not be affected by oil stains or similar contaminants.
Provides excellent bonding strength to metals and plastics.
Bonding of Optical Lenses and Collimating Mirrors
Requirements for the adhesive used in the product: Since lenses are typically small, the adhesive should have moderate viscosity to ensure easy application and prevent adhesive overflow; it should exhibit low stress so as not to affect the lenses; it should provide excellent adhesion to metal, plastic, and glass; it should cure rapidly; and it should be dustproof and waterproof.
Recommended Product: JM 352 Product Features:
Low stress ensures that the lenses will not be stretched or damaged during the curing process.
Medium to low viscosity ensures easy handling.
Photopolymerization method: rapid curing
Suitable for bonding to a variety of substrates
After bonding with adhesive, it provides excellent dustproof and waterproof performance.
Optical, Thermal & Structural Engineering Criteria for Automotive LiDAR Modules
Modern automotive and industrial LiDAR (Light Detection and Ranging) transceiver modules operate under severe automotive environmental standards (-40°C to +105°C thermal shock, 85°C / 85% RH damp-heat aging, and high-frequency road vibration) while requiring sub-micron optical alignment stability across 905 nm or 1550 nm laser wavelengths. Selecting the wrong adhesive chemistry introduces three fatal failure modes:
- Outgassing & Optical Lens Fogging: Volatile siloxanes or unreacted monomers condense onto laser diodes, MEMS mirrors, and receiver lenses, degrading point-cloud range. Low-outgassing UV cationic epoxies (JM 2081) and optical UV acrylates (GM 3239) prevent optical contamination.
- Cure Shrinkage & Active Alignment Shift: Collimator lenses and beam splitters require volumetric cure shrinkage below
1.2%and high glass transition temperature (Tg) so optical axes do not drift after UV exposure. - FPGA / Laser Driver Thermal Bottlenecks: High-density LiDAR SoCs and laser firing boards require low-stress, high-conductivity gap fillers (JOMG 1980 8.0 W/m·K 2K Thermal Silicone Gel) to transfer heat into the cast aluminum housing without warping the PCB.
Verified JOME Engineering Grades & Specification Cross-Reference
To qualify an industrial-grade adhesive, potting compound, or thermal interface material for this application, compare verified Shanghai Jome Industrial Co., Ltd. (JOME) formulations below or explore our primary category hubs: UV Curing & Optical Clear Adhesives and Medical-Grade Silicone Gel & Special Elastomers.
| JOME Grade / SKU | Polymer Chemistry & Cure | Key Verified Specification | Primary Industrial Application |
|---|---|---|---|
| GM 3239 / GM 3218 | 1K Optical Clear UV Acrylate Adhesive (LOCA) | >98% light transmittance | 3–10s UV LED cure | Non-yellowing | LiDAR optical windows, display cover glass, PMMA/PC/glass lenses |
| JM 2081 | 1K UV Cationic Epoxy Active-Alignment Adhesive | Low volumetric shrinkage (<1.2%) | High glass/ceramic/metal bond | LiDAR transmission modules, optical transceivers, endoscopic lenses |
| JM 3302 / JM 380 | UV/Moisture Dual-Cure High-Resilience Silicone Sealant | Rapid UV cure + shadow moisture cure | Replaces rubber O-rings | Medical anesthesia masks, disposable catheters, IP68 sensor housings |
| JOMS 5707 | 2K Medical-Grade Biocompatible Addition Silicone Gel | Platinum-cured, ultra-pure, skin-safe & non-cytotoxic | Medical wearables, endoscopic capsules, patient interface cushions |
Interactive Engineering Tools: Master Substrate & Thermal Cross-Reference Chart · Potting Volume, Mix Ratio & ΔT Calculator · Industrial Adhesive Manufacturer Comparison
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Matched JOME Industrial Formulations: For production bonding, potting, and sealing qualification in this application, evaluate 2-Part Clear epoxy adhesive thin layer Potting Compound, Clear long-term yellowing-resistant polyurethane encapsulation coating compound, Clear self-repairing encapsulating silicone gel, and Vehicle-grade transparent self-healing encapsulated silicone gel (ISO 9001:2015 and CTI RoHS 2.0 verified; free engineering samples shipped via UPS freight collect).
Frequently Asked Engineering Questions
Q: Which JOME adhesive or potting grades are recommended for adhesive selection for lidar transmission modules?
Depending on substrate pair, continuous operating temperature, and curing line constraints, Shanghai Jome Industrial Co., Ltd. (JOME) recommends evaluating GM 3239 / GM 3218, JM 2081, and JM 3302 / JM 380. Review our full specification table on this page or request a customized formulation sample.
Q: Can JOME customize viscosity, cure speed, or thermal conductivity for our automated production line?
Yes. JOME's Shanghai RandD laboratory customizes A/B mix viscosity, thixotropic index, pot life, Shore hardness, and thermal filler loading (0.75 to 25.0 W/m·K) to match your dispensing equipment and environmental test standards.
Industrial Adhesive Categories, Matched Grades and Engineering Guides
Product and Application Categories: Thermally conductive adhesive · Thermal Conductive Sealant · Thermal Conductive Pad · Silicone Potting Compound · Structural Adhesive · Silicone Structural Adhesive · Anaerobic Structural Adhesive · Silicone Sealants · Epoxy Sealants · UV Curing Adhesives · UV Silicone Sealant · Anaerobic Adhesive · Anaerobic threadlocker adhesive · Thread sealant · UV Curable Acrylic · Lubricating grease · Medical Grade Silicone gel · Company News Guides · Applications Guides · Electrical Appliances / Household Appliances / Consumer Electronics Guides · Wind power Guides · Medical Devices Guides
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