Verification of lens design
The following is the content related to the lens design verification: In the process of lens design, the lens optical path simulation technology could be used for design verification. It had many meanings: - Increase design efficiency: It can help designers quickly verify the design plan and avoid repeated modifications in the actual processing process, thus greatly improving the design efficiency. - Reduce R & D costs: Potential problems can be found in the design stage and optimized in advance, reducing the cost loss in the actual processing and testing process. - Optic performance optimization: Accurately analyze the optical performance of the lens and provide data support to the designer to improve the optical system and improve the image quality. - Extending design ideas: It helps designers to better understand the principles of light, stimulate inspiration, and expand design ideas. From the specific lens design verification examples, such as the lens design of the target detection space infrared camera, the solution of combining the image side eccentric optical path and low-temperature optical technology was proposed. The image side eccentric refraction optical system with an object side field of view of 8°×8°, an entrance pupil aperture of 265mm, and a working temperature of 200K was designed. The lens's maximum aperture was 280mm, and it adopted a multi-level scattered elastic support design. After the lens was adjusted and the image quality was confirmed at room temperature, the mechanical vibration test was carried out. The image quality was tested at 200K. The test results showed that the energy concentration of the lens reached 75% on the axis and 72% at the edge of the field of view. This was also a design verification process. In addition, in the lens testing laboratory, the lens was tested and analyzed in detail through various testing equipment and instruments. It was also a kind of verification of the lens design. The functional divisions of the laboratory included the sample receiving area (receiving the lens samples to be tested and registering them for classification), the pre-treatment area (pre-treatment such as cleaning and drying the lens), the testing area (equipped with high-precision testing equipment such as optical measuring instruments, microscopes, etc.), and the data analysis area (equipped with computers and data analysis software to process the analysis data to obtain the results). Each link worked together to ensure the accuracy and scientific nature of the lens inspection and verification. Read more exciting novels for free
Sunny optical phone lens design
Sunny Optics 'phone lens design had many features. The lens was known for its high definition and optimized optical design. For example, the slanted lens design improved the shooting performance in low-light environments. At the same time, Shunyu introduced advanced coating technology in its latest lens, which reduced reflection and significantly improved color reproduction, allowing users to feel more realistic colors and higher contrast. In addition, the lens also adopted a lightweight design, allowing smartphone manufacturers to retain a smaller body while providing more powerful shooting capabilities. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
What parameters should be provided to design the lens?
The parameters that needed to be provided when designing the lens included: 1. * * Lens-related parameters **: - The number of lenses. - The type of glass. - The radius of the lens. - The thickness of the lens. - The distance between the lenses. - The diameter of each lens. 2. * * Focus related parameters **: - The effective focal length (EFL) includes the focal length of the image (the distance from the main surface of the image to the focal point of the image) and the focal length of the object (the distance from the main surface of the object to the focal point of the object). It is necessary to pay attention to the problems of the focal length being too short or too long. For example, if the focal length is too short, it will cause the field of view to be too large. If the focal length is too long, the lens will be too long and the field of view will be too small. - Back focal length (BTL, the distance from the last side of the lens in the optical system to the image plane). - The optical focal length (FFL, the distance from the first surface of the lens in the optical system to the object surface) must be distinguished from the focal length of the mechanism. - Mechanical back focal length (FTL/FFL, the distance from the last mechanical surface of the lens group to the image surface). 3. * * Overall length of the lens **: - Total optical length (the distance from the first side of the lens to the image plane). - The total length of the mechanism (the distance from the end of the lens barrel to the image surface). 4. * * Field of view (FoV)**: Including diagonal field of view (FoV-D), horizontal field of view (FoV-H), and vertical field of view (FoV-V). It refers to the largest field of view that the lens can capture. 5. * * Joules (F/NO., relative aperture)**: The ratio of the effective focal length to the diameter of the pupil. It is used to determine the brightness of the lens. 6. * * Distortion-related parameters **: Distortion is divided into TV distortion and optical distortion. It is the off-axis phase difference. It is the difference between the height of the intersection point of the off-axis point and the main ray on the image plane and the ideal (near-axis) image plane. Distortion is a function of the field of view and has nothing to do with the aperture. 7. * * relative illumination (Ri)**: The ratio of the central illumination to the peripheral illumination. If the relative illumination is too low, problems such as blurring and color distortion will occur. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The difference between generation verification and family verification
One generation verification and pedigree verification were two different methods of genetic testing. One-generation verification referred to testing only the proband through the second-generation sequence, and then performing a one-generation verification on suspected mutations. Pedigree verification referred to the simultaneous second-generation sequence of the proband and his parents. Each mutation of the proband was compared in parallel by three people to determine whether it was consistent with co-separation. The first generation verification was mainly used to improve the accuracy of the test, while the pedigree verification could confirm whether the genetic information carried by the embryo was consistent with the known hereditary diseases in the family to prevent the disease genes from being passed on to the next generation.
Verification System
The following are some recommendations for the sweet novels of the certification system: Wind and Cloud Into the Painting Scroll: This is a sweet novel with an ancient setting. It tells a story of the early Tang Dynasty, full of romantic and growing elements. 2. << Spoiled >>: This novel was written by Miang. The male and female protagonists in the story have a childhood relationship. The love story between them is full of comedy and sweetness. 3. " After the Fuma Elopes ": This is a novel that transcends the ancient language of sweetness. It tells the story of a princess and the Fuma. It is full of romance and sweetness. The novels recommended above are all completed and can satisfy your requirements for the sweet novels of the certification system.
Quge verification
Quxing verification was a kind of proofreading technique. It was mainly used to check whether the text met the requirements in terms of semantics, grammar, style, and so on.
Canon lens, Nikon lens
Canon lenses and Nikon lenses were well-known brands in the field of camera lenses. In terms of Nikon lenses, the new Z-mount lenses were generally of high quality, such as holo-field compatibility and excellent corner resolution. The F-mount was limited by the caliber and the distance between the two sides, while the Z-mount had a great improvement in this aspect, especially in the wide-angle to mid-focal length section. Canon lenses, such as the RF28 - 70mm F2.8 lens, had a constant large aperture of F2.8. It was portable, and the image quality was average, even a little beyond the positioning of the silver ring lens. It also had anti-shake function. However, its price was sometimes affected by marketing routines. For example, during the 11/11 period, the price of Canon RF28 - 70mm was higher than the recommended price on the official website and did not return to normal value. These two lenses had their own optical design features, advantages, and market positioning under different camera mount systems. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
A game without verification
There were many types of games that did not require verification, including open world settings, sandbox construction, music play, business simulation, and answering questions. Some of the recommended games that did not require verification included Mini World, Ultraman Legends, Plants vs Zombies 2, Subway Surfers, Travelling Girl, Knight's Heart, Godslayer, and answering questions to earn money. These games provided a rich gameplay and entertainment experience, allowing players to enjoy the fun of the game.
Movie ticket verification
The method to check the movie tickets was very simple. First of all, you can carefully check the information on the movie ticket, including the movie name, screening time, theater name, etc., to see if they match the movie ticket you bought. Secondly, many movie tickets use the QR code technology. You can use the scanning tool on your phone or the scanning equipment provided by the theater to scan the QR code on the movie ticket. If the QR code was valid, the system would display the ticket information to prove that the movie ticket was valid. If you can't scan the QR code to check your ticket, you can ask the theater staff for help. They can verify the authenticity of your movie tickets through a computer or other specialized equipment. In addition, in order to protect your rights and interests, it is recommended that you choose formal channels when purchasing movie tickets, such as official ticketing websites, theater ticketing windows, or authorized third-party ticketing platforms. You should avoid buying movie tickets of unknown origin to avoid encountering fake tickets or other problems.
Bank photo verification
In the bank related business, photo verification was mainly used for identity verification and other purposes. For example, in terms of credit card processing, the new regulations required that after submitting basic personal information, one had to turn on the mobile phone camera and follow the prompts to complete the live scan. Then, the system would automatically match the user information stored in the public security database for verification. Only after all the procedures were passed could one successfully receive a credit card. In Singapore, major retail banks will implement Singpass Face Verification (SIFF), which uses facial scans to verify customer identity against national records. It is used to strengthen the digital token (MT) setting process for retail bank customers and trigger it in high-risk scenarios to prevent fraud. However, there were also loopholes in the bank's identity verification system. For example, security tests of some bank applications in Vietnam revealed that their identity verification system could be deceived by static images instead of accurately verifying the user's real face. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Poetry and Song Verification
The main purpose of the poem verification was to check the rhythm of the melody to see if it met the relevant requirements so that it could be corrected. For rhythmic poems (including quatrains, regular poems, and rhythms of five or seven characters), quatrains and regular poems had a fixed number of words, sentences, and flat tones. They could be tested through professional platforms such as "Poetry My Love" and "Search Rhyme". During the test, he would directly copy and paste the work into the input box of the test column. He could perform the basic verification by selecting "New Rhyme" or "Pingshui Rhyme" according to the work. However, he still had to judge the polyphone and obstinate sentence patterns by himself. Because there was no limit to the number of sentences in the arrangement of temperament, it could not be completely checked by software. However, the whole poem could be divided into several sections and tested as a regular poem or quatrain. However, this method could only detect the level and rhythm. Whether it was in tune or not still needed to be judged manually. The word is filled according to the word score. When checking the poems, one needed to pay attention to the level and tone. The level and tone were a set of tone specifications for modern rhythmic poems. Nowadays, most beginners would use computer or mobile phone programs to check the rhythm of poetry.