Light filter industrial lens
In industrial lenses, the filter played an important role. The filter was an accessory used at the front of the lens. There were many types, including the lens cover, the polar filter, the neutral density filter, the color filter, the band-pass filter, the infrared filter, the infrared filter, and so on. 1. ** Protective lens cover **: Its function is to prevent dirt and dust from attaching to the lens surface and protect the lens glass. 2. ** Polarizing filter (Polarizer)**: Able to filter out reflections. It can eliminate and reduce the illumination of the light source on the smooth surface. During installation, the light source and the lens need to be equipped with corresponding polar filter respectively. By installing a polar lens in front of the industrial lens and carefully rotating the polar lens, the harmful glare can be minimized or even disappeared, so as to take a glare-free photo. 3. ** Neutral gray filter/light reduction mirror/ND mirror **: Able to reduce light evenly without changing the aperture, preventing overexposed and suppressing low resolution. 4. ** Color filter, band-pass filter **: Only transmit the light needed for inspection, cutting off obstructing environmental light such as sunlight and fluorescent lamps. 5. ** Anti-infrared filter **: Reduce interference and remove excess infrared light. 6. ** Ultraviolet protection filter **: Used to observe the fluorescence of violet light (exciting light). Choosing the appropriate filter in the imaging system can achieve some special effects, and the design of the imaging light path needs to pay attention to the influence of various stray lights. The filter can help to obtain clear images for analysis and detection. Read more exciting novels for free
Telephoto camera filter lens recommended
For the telephoto camera lens, there is a chameleon 900mm f/8.0.(Nikon Z-mount, Pentax mount, Canon EF-M mount, etc.), Chameleon 650 - 1300mm f/8.3 (There are 4/3 ports, Pentax ports, Soni E ports, etc.), Chameleon 420 - 800mm f/8.3 (there are 4/3 ports, Soni ports, etc.), Tenglong 50 - 300mm F4.5 - 6.3 Di III VCXD, Tenglong 50 - 400mm lens, etc. As for the filter, the commonly used lens filter on the market included the UV-lens, the Polarizer, the Black Soft lens, the Starlight lens, and the Light Reduction lens. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Canon lens filter tightening direction
Canon lenses were usually tightened in a clockwise direction. However, before installing the filter, you need to check whether the filter fits the camera. You can check the lens size on the camera dust cover and the size of the lens outer ring. Turn the threaded surface of the filter to the lens and carefully rotate it clockwise to the bottom, but it may not be very tight. If you want to disassemble the Canon 18 - 135 lens filter, you should twist it counterclockwise. If you can't twist it, you can use some special methods, such as using a cotton swab to dip a little sewing machine oil in the gap between the filter and the lens. Let it stand for a while before twisting it, but the oil should not be too much to avoid affecting the lens. In addition, if the screw thread was misaligned during the installation of the filter, it needed to be handled before installation. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Guangzhou HD industrial lens manufacturer
Guangzhou Zhicai optical lens manufacturer develops industrial lenses, including industrial camera lenses, FA machine vision lenses, CCTV lenses and many other lenses. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Industrial lens parameters detailed explanation
The parameters of an industrial lens included the following important aspects: ##1. Focus (EFL) 1. ** definition and essence ** - The focal length is the distance from the main light point of the optical system to the focal point. The distance from the topmost lens to the back focal point is called the back focal length, and the distance from the bottommost lens to the front focal point is called the front focal length. It was an indicator of the ability of an optical system to converge or diverge light. 2. ** Relationship with field of view ** - For the same sensor, the longer the focal length of the lens, the smaller the field of view, and the smaller the field of view. Conversely, the smaller the focal length, the larger the field of view, and the larger the field of view. ##2. Field of View 1. ** Meaning ** - It refers to the range of the image that the lens can capture, usually expressed in terms of field of view. ##3. Magnification 1. ** Concepts ** - Magnification refers to the ratio of the size of the image to the size of the object. ##4. Chip size 1. ** Selection Principle ** - To choose a lens with a larger compatibility, if the target surface of the CCD-chip is 1 ", the lens should at least use a lens with a maximum compatibility of 1". A 2/3 "lens is not suitable. ##5. Numeric Aperture UA 1. ** Impact on the camera ** - It would affect the resolution and aperture of the lens. The larger the UA value, the better the lens resolution and aperture. The resolution calculation formula is: resolution = 0.61* Lambda/UA (Lambda is the light source's wavelength). At the same time, effective FNO = optical magnification/(2xUA). ##6. Aperture Number (F.No) 1. ** Concepts ** - The aperture number (F.No) was the ratio of focal length (EFL) to the entrance pupil (D, the image of the aperture in the object space), which was F.No = EFL/D. 2. ** Impact on the picture ** - The size of the F.No number would affect the brightness of the screen, the depth of field, and the sensitivity of the installation. ##7. Working Distance WD 1. ** Concepts ** - It refers to the distance between the bottom of the lens and the surface of the object. In the machine vision optical system, the required space had to consider the length of the camera lens group itself and the working distance of the lens. If the space could not satisfy the sum of the two, it was necessary to consider changing the working direction of the prism or re-designing the optical system. ##8. DOF 1. ** Relationship with focal length and working distance ** - The relationship between depth of field and focal length was that the longer the focal length, the smaller the depth of field, and the shorter the focal length, the greater the depth of field. The relationship between depth of field and working distance was that the shorter the working distance, the closer the lens was to the object, and the smaller the depth of field. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Industrial camera lens interface buckle
The common interface of industrial cameras include C interface, CS interface, F interface, M72 interface, M95 interface, etc. The F interface was a snap-on interface. Usually, except for the F interface, the other interface was defined by the size of the thread and had a specific distance between the two. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Can an industrial lens be used for photography?
Industrial lenses could be used for photography. The industrial lens was a camera or photographic lens used in the field of industrial automaton. Its main function was to perform optical imaging. It was an essential core hardware in machine vision, and its image quality was affected by many factors. It could be divided into different types such as fa lens (also known as CCTV lens), zooming lens (manual and automatic), and monocentric lens (generally, there were object monocentric and double monocentric), which indicated that it could be applied to photography related work. There were also many cases of industrial lenses being used in photography. For example, some photographers used lenses removed from Ricoh photocopiers to modify the so-called "burgundy industrial lens" for filming. Some people used unnamed industrial lenses with the SonyA7. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Machine vision industrial camera and lens selection
Machine vision industrial cameras and lens selection needs to consider the following aspects: ** I. Selection of industrial cameras ** 1. ** resolution ** - First of all, the accuracy requirements and field of view must be clearly defined to calculate the required camera resolution. For example, if the detection accuracy is 0.01mm and the field of view is 21mm x 16mm, then the camera resolution should reach (21/0.01) X (16/0.01) about 3 million pixels. To obtain high-quality images and high-precision detection, a camera with a higher resolution such as 5 million resolution could be considered. 2. ** Type of sensor ** - It was mainly divided into two categories, namely, CCD-based and CMOS-based. At present, CMOS-based had gradually become mainstream. When choosing a LCD sensor, if you need to capture dynamic images, a global shutter LCD sensor is more suitable; for static image capture, a rolling shutter LCD sensor is a better choice. 3. ** Interface Selection ** - The distance and size of the data transmission had to be considered. The USB 3.0 interface is fast but the transmission distance is limited.(The theoretical transmission speed limit is about 500mb/s, and it is not recommended to use it over a distance of more than 5 meters);GigE (GigE) interface can be used over long distances.(Up to 100 meters) High-speed data transmission (up to 1Gbit/s), suitable for industrial scenarios where cameras are deployed over a large area and require high data transmission speed and stability, such as large-scale factory automated production line monitoring. The Camera Link interface is a high-speed serial interface specially designed for industrial cameras. The data transmission rate is very high. It is used in professional industrial testing fields that require extremely high speed and accuracy, such as the manufacturing process of semiconductor chips. 4. ** Color Selection ** - If the detection target involves color recognition, a color camera should be used; if color recognition is not needed, a black-and-white camera is more cost-effective. Color cameras could record the three basic colors of red, green, and blue to form a color image. Different color cameras had different color depths (usually measured in bits). The higher the color depth, the higher the color reproduction of the image. For example, an 8 - bit color camera could record 256 (2 ^8) color levels, and a 12 - bit camera could record 4096 (2 ^12) color levels. Black-and-white cameras only recorded light intensity information and output black-and-white images. They had advantages in scenes sensitive to light contrast (such as detecting object contours and edges), and the data processing capacity was relatively small, so the processing speed might be faster. 5. ** Framerate ** - The frame rate refers to the number of images captured by the camera in a unit of time (usually one second). Shooting and analyzing high-speed moving objects (such as car crash test, high-speed production line product inspection, etc.), a high frame rate camera (such as 30fps or above) is needed to clearly capture the moment of object movement, analyze the movement trajectory and speed change, etc. For relatively static or slow-moving object monitoring scenes (such as indoor warehouse monitoring, office monitoring, etc.), a lower frame rate camera (such as 10 - 15fps) can meet the needs, and can also reduce data storage and transmission bandwith requirements. 6. ** Pieces ** - Pieces were the basic unit of imaging for industrial cameras. The greater the number, the richer the image details could be recorded. When detecting the surface defects of small parts, high-resolution cameras could capture details such as scratches and cracks more clearly. At the same time, under the same conditions, the higher the resolution, the larger the size of the image. This was very important for scenes that required large-sized images for post-processing or overall observation. 7. ** Target ** - The target surface of the camera referred to the size of the image sensor's sensitive area, usually expressed in inches. The larger the target, the wider the field of view, suitable for shooting larger objects or wider scenes (such as monitoring large warehouses); the smaller the target, the narrower the field of view, suitable for shooting small objects or close-up shots of local details (such as microscopic inspection in electronic chip manufacturing). ** 2. Selection of lens ** 1. ** Wavelength, zooming or not ** - It was easier to determine the working wave length of the lens and whether it needed to be zoomed. If you need to change the magnifying power during the imaging process, use a zoom lens; otherwise, use a fixed-focus lens. The most common lens worked in the visible range, but there were other applications. It was also necessary to consider whether filter measures were needed, whether it was a single color light or a multi-colored light, and whether it could avoid the influence of stray light to determine the working wave length of the lens. 2. ** Special requests will be prioritized ** - According to the practical application characteristics, the special requirements should be specified, such as whether there is a measurement function, whether a monocentric lens needs to be used, whether the depth of field of imaging is very large, etc. Although the depth of field was often overlooked, it was a factor that the imaging system had to consider. 3. ** Working distance, focal length ** - Working distance and focal length were often considered together. Generally, the resolution of the system was first determined, and then the magnifying power was obtained by combining the size of the CCD-based image. Then, the approximate distance between the object and the image was obtained by combining the spatial structure constraints, and then the focal length of the lens was further estimated. Therefore, the focal length of the lens was related to the working distance of the lens, the resolution of the system (and the size of the CCDs). 4. ** Interface Match ** - The interface types of industrial cameras and lenses must match, such as C interface, CS interface, etc., to ensure the correct connection. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Taixing electric zoom industrial lens manufacturer
It's just a " Taixing Industrial Zoom-lens Factory." There's no specific information. Is there anything else you haven't told me? For example, what were the characteristics of this manufacturer, what were the advantages of the products, and so on? If that's the name, I can only say that this is a factory that produces electric zoom industrial lenses in Taixing. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
What kind of lens filter do you use to shoot food with a single-lens reflex?
There were many types of lens filter that could be used when shooting food with a DSLR. For example, the lens was usually colorless and transparent, which could protect the lens. There was also a prismatic mirror that could reduce the reflection of light so that the color and details of the food could be more clearly presented. The light reduction lens (medium gray density lens) could reduce the amount of light entering the lens. When shooting food in a bright environment, it could help control the exposure and use a large aperture to blur the background, highlight the main body of the food or use a slow shutter to achieve special effects. The Black Soft Mirror could produce a soft effect on the image, making the food look more realistic. The Starlight Mirror could create the effect of twinkling stars on the food to enhance the fun of the scene. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Is it useful for the lens to reflect light?
The lens mainly changed the path of light through refraction, not reflection. In the principle of the car headlights lens, a reflective bowl was used to gather the light of the lamp bead at the focal point of the lens, and then the lens refracted the light evenly. Although the main function of the lens was not to reflect light, in this process, it could be considered that it indirectly redirected (refracted) the light gathered by the reflective bowl, so that the light was evenly dispersed, thus achieving a better light paving effect. However, from the perspective of light utilization efficiency, the lens's light utilization rate was not as high as the reflective bowl (mainly relying on reflecting light), because the lens structure needed to deal with the incoming light to a certain extent (such as blocking part of the light when the low beam), and there was light loss. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>