Enhance the awareness of LED lens quality and promote stable improvement

The trend of led lens enterprises to ensure the quality of all employees and to strictly grasp and control product quality is long-term and constitutes a normalization. By summarizing the previously presented problems, how to manage them, prevent them, and fundamentally prevent and handle them is the key to ensuring quality operations in the future, and improving employee awareness. In addition to completing tasks and ensuring safety, emphasis has also been placed on quality monitoring. Without production quality, there will be no work progress, and at the same time, there will be no benefits. In terms of ideology, employees should pay attention to production quality and improve quality; Enhance the ability level of personnel, enable suitable personnel to be used in suitable positions, cultivate main personnel through competitive mechanisms, adopt internal training, encourage allocation and other methods to promote operators to become main positions, and implement specialized key competency training for key positions; At the same time, implement multi skill training for other positions, so that operators can understand that by improving their abilities and ensuring reliable production and quality, they can take on the main role and actively promote the improvement of their abilities and usage quality in terms of ideological awareness. So as to enhance the quality awareness of all employees in the workshop, and then make timely adjustments and improvements through the problems presented, promoting the stable improvement of quality operations. LED Lens quality is a principle, quality is loyalty, quality is a responsibility, quality is the life of the product, and quality is the future of LED lighting lens enterprises! We should keep in mind the importance of quality, carefully complete every day's homework, and treat all details as a form of respect for life.

27 April-2024

Measurement of lens focal length

Measurement of lens focal length, sun light focusing method (rough measurement focal length method): Place the convex lens facing sunlight and place a piece of paper on the other side, changing the distance between the lens and the paper until the light spot on the paper becomes the smallest and brightest. This spot is the focus of the convex LED lighting lens. Measure the distance between the minimum spot and the convex lens using a ruler, which is the focal length. The principle of convex led lens imaging: When an object is placed outside the focus, an inverted real image is formed on the other side of the convex LED lens, which can be reduced, equal in size, or enlarged. The smaller the object distance, the larger the image distance, and the larger the actual image. The object is placed in focus, and the convex lens forms an upright magnified virtual image on the same side. The larger the object distance, the larger the image distance, and the larger the virtual image. Will not image in focus. When the focal length reaches twice, an inverted real image of equal size will be formed. In optics, the image formed by the aggregation of actual light is called a real image, which can be carried by a light screen; On the contrary, it is called a virtual image and can only be felt by the eyes. Experienced physics teachers often mention the method of distinguishing between real and virtual images: inverted real image and upright virtual image. Compared to the original object, the so-called upright and inverted are of course relative. The three types of virtual images made of flat mirrors, convex mirrors, and concave lenses are all upright; The real images made of concave mirrors, convex lenses, and small hole imaging are all inverted without exception. Of course, concave mirrors and convex lenses can also become virtual images, and both virtual images are also in an upright state.

25 April-2024

Design points of LED lenses

LED lens is a product used on LED lights to increase its strength, but how was it designed? 1. It mainly depends on the light source (high-power LED), and different brands of high-power LED will have differences in chip structure, packaging methods, light characteristics, etc., and then form the same lens. When different standard brands of LED lighting lens are used, there will be differences. Therefore, targeted development (guided by mainstream brands) is required to meet actual needs. 2. Use optical design software to design and simulate optical running, and design corresponding optical aspherical surfaces. 3. The LED lens itself belongs to precision optical components, so it requires extremely high precision in the mold, especially in the processing accuracy of the lens optical surface, which needs to reach 0.1 μ m. Lens bias needs to reach 3 degrees μ Within m. The processing of such high-precision molds generally requires the following equipment: ultra precision machining machines 4. The precision component of the mold lies in the optical core, which mainly uses specialized core steel to complete the initial embryo, nickel plating, and then uses an ultra precision machining machine to perform non spherical skill machining on the curved surface.

22 April-2024

How are LED lenses classified based on their application?

LED lens is an optical system that is closely connected with LED and can enhance the power of light application and emission. It can use different lenses to modify the light field dispersion of LED according to different functions. According to application classification, it can be divided into primary lenses and secondary lenses. Primary lens 1. The primary lens is directly encapsulated (or bonded) onto the LED chip holder, forming a whole with the LED. 2. In theory, LED chips emit light at 360 degrees, but in reality, the chip can be fixed and packaged on an LED bracket, so the maximum luminous angle of the chip is 180 degrees (there may be a small amount of residual light larger than 180 degrees). Other chips may also have some stray light, which can effectively concentrate all the light from the chip through a single lens and obtain different luminous angles such as 180 °, 160 °, 140 °, 120 °, 90 °, 60 °, etc. However, the luminous power of led lens varies with different angles (the general rule is that the higher the angle, the higher the power). 3. A primary lens usually uses materials such as PMMA, PC, optical glass, silicone, etc. Secondary lens 1. The secondary lens and LED are two independent objects, but they are inseparable when used. 2. The function of a secondary lens is to concentrate the luminous angle of an LED lighting lens source again into a desired angle between 5 ° and 160 °. The dispersion of the light field can be mainly divided into circular, elliptical, and rectangular shapes. 3. Secondary lens materials generally use optical grade PMMA or PC; In special circumstances, glass can be selected

18 April-2024

What are several common high-power LED lens materials

Several common high-power LED lens materials include PC, PMMA, silicone, glass, etc. The following will be explained. 1. High power LED bead PC led lens: Optical grade material polycarbonate (PC for short). Plastic materials have high production efficiency and are produced through injection molding and extrusion. The product has the advantages of light weight, anti impact, and low cost, with a slightly lower transmittance of about 89% when the thickness is 3mm; At the same time, the temperature resistance of the material product is not very high, the temperature cannot exceed 110 ° C, and the hot deformation temperature is 135 ° C. Nowadays, this material is widely used in LED lighting lens that do not require high transmittance. 2. High power LED bead silicone lens: Silicagel; Silica nickname: Silica gel is a highly active adsorption material, which is an amorphous substance. Due to its high temperature resistance (it can also be reflowed), silica gel is usually used to directly package on LED chips. Generally, silica gel lenses are small in size and 3-10mm in diameter. Due to the larger the product volume, the higher the production cost, and it is less commonly used in other aspects besides LED chip packaging. 3. High power LED bead glass lens: The main benefits of optical glass materials are that their light transmittance can reach up to 97% and they have high temperature resistance; But it also faces factors such as single product shape, fragility, difficulty in batch production, low production efficiency, and high cost. Although few domestic manufacturers have started to develop glass molding processes and use mold casting to produce glass lenses, they can produce lenses of various shapes and special surfaces. However, the price of such production equipment is high now and it is difficult to widely expand in the short term. In addition, the fragile defects of glass materials still need to be discussed and addressed. Due to the high transmittance and cost of glass material lenses, they are commonly used in optical precision instruments. 4. High power LED bead PMMA lens: PMMA originates from the English word acrylic, with the chemical name polymethyl methacrylate, commonly known as organic glass. In Hong Kong and Taiwan, PMMA is commonly referred to as acrylic. This material is an early developed important plastic polymer material with good transparency and chemical stability. Plastic materials have the same characteristics as PC materials, such as easy molding, high production efficiency, light weight, and resistance to impact. At the same time, their light transmittance is about 93% when the thickness is 3mm; The defect is that the temperature cannot exceed 85 ° C and the hot deformation temperature is 92 ° C. Due to its good transmittance, high mass production efficiency, and low cost, this material is widely used in various optical lenses.

15 April-2024