The 980nm semiconductor laser module is a near-infrared light source featuring excellent beam quality, low heat generation, high concealment and enhanced eye safety. It serves as a core light source widely used in industrial sensing, intelligent equipment, scientific detection and security night vision systems.

A speckle structured light laser is an integrated laser module composed of laser chip, driving circuit and DOE (Diffractive Optical Element). It diffracts single laser beam into millions of fixed, pseudo-random speckle dots via special DOE optics and projects unique granular speckle patterns onto target surfaces.

3D printing defect detection is a quality control procedure to find abnormal flaws during or after additive manufacturing, aiming to eliminate unqualified parts caused by layer shifting, missing printing, air pores, surface pits, warpage, unfused powder and dimensional deviation.

Since its invention, laser (Light Amplification by Stimulated Emission of Radiation) has become a cornerstone of modern technology and medicine. However, few realize that the wavelength of a laser—its color and the invisible "light" it emits—is crucial in determining its applications. From precise ophthalmic surgery to deep-space communications, from micro-machining to defense technology, the choice of wavelength is like giving a laser a unique "identity code." This article will unlock the mysteries of different laser wavelengths and explore how they are profoundly changing our lives.

Why 405nm?

· 405nm near-UV wavelength matches the maximum absorption peak of all mainstream UV photopolymer resins (including elastic resins for 3D printed shoes), enabling efficient photopolymerization/curing.

· Higher photon energy than ordinary LED, deeper curing depth, wider adaptability to high-viscosity, high-filler industrial resins.

DLP (Digital Light Processing) is a vat photopolymerization resin 3D printing technology.

The feasibility, efficiency, and final beam quality of coupling a laser beam into an optical fiber all depend on the characteristics of the original laser and the type of optical fiber.

,A bird laser deterrent, also called a green laser bird repeller, is a modern device that uses a 520 nm green laser beam to keep birds away from farms, warehouses, airports, and other sensitive areas. It works by projecting a moving green laser light across open spaces or structures, which birds see as a solid, approaching object rather than a harmless light. Because birds' strongest sense is their vision, this sudden visual threat triggers their natural flight instinct, making them flee immediately. Over time, they learn to avoid the area altogether.

A "lifesaver" against drowsy driving: These green lasers are officially called anti-drowsy laser lights, and are warning devices specifically designed to improve nighttime driving safety on highways. They are not decorative or speed measuring devices.