Is LiDAR a laser or radar?
LiDAR stands for Light Detection and Ranging and uses laser light to measure distance. A LiDAR system emits light pulses or modulated light, detects returned signals, and calculates range to create spatial data. Radar uses radio waves instead. Because LiDAR operates with light, its optical components, coatings, alignment, and beam-shaping design are central to sensing performance.
What polymer optics are used in LiDAR and 3D sensing?
LiDAR and 3D sensing systems can use polymer lenses, aspheres, Fresnel optics, microlens arrays, diffusers, beam-shaping surfaces, and bonded multi-element assemblies. The appropriate architecture depends on wavelength, field of view, beam profile, size constraints, environmental requirements, and manufacturing volume. Polymer optics can provide a practical route to lightweight, complex optical geometries and scalable component production.
Can polymer optics perform in near-infrared LiDAR systems?
Polymer optics can be engineered for near-infrared applications when material selection, optical design, and coating requirements are evaluated together. Apollo provides polymer coating solutions for UV, visible, and NIR ranges, including anti-reflective, filter, mirror, and beamsplitter coatings. Development should account for wavelength-dependent transmission, birefringence, thermal conditions, surface quality, and the operating environment of the finished sensor.
How do anti-reflective coatings help LiDAR optics?
Anti-reflective coatings reduce surface reflections within selected wavelength ranges through thin-film interference. In a LiDAR optical path, this can help increase transmitted light, control unwanted reflections, and support system efficiency. Polymer optics require coating processes that respect temperature limitations of the substrate. Coating selection should be matched to the system wavelength, angle range, durability needs, and component geometry.
When should a LiDAR team use diamond turning before molding?
Diamond turning is valuable when a team needs custom optical prototypes before committing to production tooling. It can produce aspheric, diffractive, Fresnel, toroidal, spherical, and plano polymer surfaces, allowing design concepts to be evaluated with physical components. Prototype results can inform tolerance decisions, optical performance validation, and design-for-manufacturing updates before injection molding is used for volume production.
What is included in an optical design-for-manufacturing review?
A design-for-manufacturing review examines whether an optical concept can be produced while meeting intended performance and budget requirements. Apollo considers optical and mechanical requirements together, including geometry, material choice, tolerances, surface specifications, coating needs, assembly approach, and expected production pathway. The review helps identify risks early, before tooling or high-volume manufacturing decisions make changes more costly.
How are polymer LiDAR optics tested?
Testing can include measurement of optical surface roughness, topography, figure, mechanical dimensions, and polarization-related retardation where relevant. Apollo’s in-house metrology includes coordinate measurement, optical profiling, microscopy, and interferometry systems for different component types and sizes. Testing plans should be tied to the critical parameters of the sensing design, its tolerance budget, and the intended application environment.
Can Apollo assemble multi-element polymer optical systems?
Yes. Apollo assembles polymer-based optical products ranging from UV-cemented doublets to complex multi-element systems. Available approaches include mechanical assembly, manual prototype setup, semi-automatic fixturing, high-volume automation, UV bonding, and ultrasonic welding. Assembly capabilities also support air-spaced optics, glass-polymer hybrids, refractive-diffractive hybrids, opto-medical devices, and opto-electronic products.