JB/T 8248.3-1999 English PDFUS$249.00 ยท In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. JB/T 8248.3-1999: Method for measuring the coefficient of vignetting and uniformity of image plane illuminance JB/T 8248.3: Historical versions
Basic dataStandard ID: JB/T 8248.3-1999 (JB/T8248.3-1999)Description (Translated English): Method for measuring the coefficient of vignetting and uniformity of image plane illuminance Sector / Industry: Mechanical & Machinery Industry Standard (Recommended) Classification of Chinese Standard: N43 Classification of International Standard: 37.040.10 Word Count Estimation: 7,727 Date of Issue: 1987-12-01 Date of Implementation: 2000-01-01 Older Standard (superseded by this standard): JB/T 8248.3-1995 Summary: This standard specifies: photographic lens vignetting and image uniformity coefficient of surface illumination measurement methods, But fisheye zoom lens, the object space for non-air medium lens. Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of JB/T 8248.3-1999_English be delivered?Answer: Upon your order, we will start to translate JB/T 8248.3-1999_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of JB/T 8248.3-1999_English with my colleagues?Answer: Yes. The purchased PDF of JB/T 8248.3-1999_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.Question 5: Should I purchase the latest version JB/T 8248.3-1999?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version JB/T 8248.3-1999 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically. |