In the face of ever-changing security monitoring product forms and application scenarios, surveillance cameras must have excellent imaging quality in complex lighting environments in a variety of scenarios. Thanks to the development of high-definition surveillance, the development of high-definition lenses, the most important component of high-definition photosensitive devices, has also received much attention in recent years. However, at present, the surveillance cameras on the market are exquisite, with a wide variety of products and varying quality. As the "hotness" of HD is getting longer, engineers and dealers may not be able to distinguish the real good lens in the face of numerous lenses. Here, Xiaobian will take you from a non-optical point of view to monitor the lens. How to tell the difference between the lens? From AVENIR ETOKU Seiko's SV1040GNBIRMP lens, we may be able to find the answer. This article refers to the address: http:// First, the appearance of the lens to identify the quality of the delicate The first thing that any lens sees is the appearance. A good surveillance lens will focus on shaping the details from the inside out. In general, well-known brands will be more careful in the design of the lens and the materials used in the casing. Take the SV1040GNBIRMP of AVENIR ETOKU Seiko lens of Shenzhen Supersonic Electronics Co., Ltd. as an example. The lens has a precise outer casing and excellent material selection. The overall appearance of the lens is very strict. It is made of a matt plastic case with no glare and no glare. It is worth mentioning that the main advantage of the plastic casing is that the cost of the spare parts is low, which can greatly reduce the cost of the lens casing; the plasticity is strong, and the appearance of the lens can be designed and rectified according to actual needs; its aesthetics is self-evident. This plastic is an engineering plastic, and its strength and hardness can fully meet the engineering requirements of industrial lenses. The plastic case also ensures that there is no significant heat rise and contraction in the case of a large change in the working environment temperature, ensuring the accuracy of the internal lens position. Throughout the international trend, surveillance cameras including Tamron, Fujinon, Computar and AVENIR ETOKU Seiko lenses are all made of plastic. However, plastic molds are expensive, and the precision of the manufactured casings is quite strict. Most domestic lens manufacturers are not allowed to meet the production requirements because of the production process, but are also blocked from the door, and still use metal casings. Identify the surveillance camera four-parts - appearance articles Second, the lens feels the difficulty of debugging To distinguish the pros and cons of the lens, in addition to seeing the four roads, it is necessary to "hand touch all directions." A good surveillance lens is not only beautiful in appearance, but also very important in hand. In the actual monitoring and construction, there are many situations where high-altitude operations are required. In this environment, the difficulty of debugging the lens is increased. In order to facilitate the construction, the feel of the lens needs to meet higher requirements. The excellent lens will feel light and delicate, and it can be precisely and finely rotated. There is no oil leakage or the lens adjusts the rigid and stuck. A good lens feels smooth, that is, to achieve a focusless focus that is both undamped and accurate, rather than a slight focus on the focus point or the lens is difficult to adjust. The good feel of a good lens can easily focus and focus, greatly reducing the engineering difficulty and workload. In order to meet the high requirements of the lens feel, the AVENIR ETOKU precision lens of Shenzhen Supersonic Electronics Co., Ltd. strictly controls the quality of the lens during the production process, and controls the lens processing error within one-seventh of the hair strand to ensure Have a good feel, they set up the adjustment bar on the lens, can be fixed in time after adjustment, even in the case of vibration, the imaging will not be illusory. In order to achieve the ultimate effect, the AVENIR ETOKU Seiko lens is made of German imported damping oil to ensure the best feel. Third, the lens coating identifies the overall amount of light effect The coating of the monitoring lens can cancel the reflected light of the lens, and the effect is to eliminate the ghost, glare and anti-refraction generated spots, and at the same time reduce the lens reflectivity and increase the amount of light entering the lens. Lens coating is generally divided into single layer coating and multi-layer coating. The preferred single-layer film is usually violet, and the color of each coating is different. AVENIR ETOKU Seiko's SV1040GNBIRMP multi-layer coating is dark green. Since the lens of the lens consists of a glass lens, it reflects light and reduces the light transmitted through the glass lens. The coating technology is mainly used to achieve anti-light reflection, promote light penetration, improve the overall light throughput of the lens, and ultimately improve the image quality. Multi-layer coatings work better than single-layer coatings. In fact, the application of lens coating technology on surveillance cameras is more common, but the technical capabilities of manufacturers in this part are quite different, so it is easy to use this part as a reference for distinguishing lenses. The multi-layer coating technology of AVENIR ETOKU Seiko lenses is very mature and highly competitive in terms of technical capabilities. As the "eyes" of surveillance cameras, choosing a good lens is very important for the overall effect of the construction and monitoring system. When selecting the monitoring lens, the engineering company and the dealer should not only consider polishing the "eyes" of the camera, but also polish their eyes, and select the real excellent lens through the above points.
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