If you are buying optical products made of glass materials such as filters/attenuators/reflectors/splitters, please pay special attention to:
1. Avoid storing the filter in a humid, high temperature environment.
2. Avoid hard objects scratching the filter surface and heavy objects crushing.
3. Take the lens with finger cots or rubber gloves. If you don’t have one, wash and dry your hands before taking the lens. Place the lens lightly on the lens paper and don’t place it on rough or hard surfaces to avoid damage. When getting dust or fingerprints, use a cotton swab or cotton ball to dip a small amount of industrial alcohol or ethanol and other solvents and wipe gently. Do not use force. Slowly wipe the entire lens in one direction at a time. Avoid rubbing back and forth. Wait for the solvent to cool. After drying, put it on the corresponding position for use.
4. The use temperature of colored optical filter should not exceed 80 degrees. If it needs to be used under high temperature conditions, please explain to the seller that only tempered optical filters can be used at high temperatures, but it is best not to exceed 250 degrees to avoid damage to the filter. .
5. During the use of the filter, it is necessary to prevent the temperature from rising and falling suddenly. If the temperature difference is too large, the filter will be broken. Please operate carefully.
6. The combination of the filter and the instrument or device: If the instrument or device has threads, you can install the filter on the corresponding ferrule and then screw it to the device; if there is no thread and only the structural parts, you can use AB Glue or UV glue to stick the filter to it. If it doesn''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''t work, you can communicate with customer service and provide relevant guidance.
1. In order to avoid the damage or loss of the goods during the transportation process, please check carefully when you receive the goods. If there is a problem with the packaging or the goods, please do not sign for it, and contact us as soon as possible to solve the problem together , Thank you for your cooperation!
2. The quality of the products sold in our shop are guaranteed, within seven days after the arrival of the goods(Subject to receipt)Due to quality issues(Does not match the spectrum, or the lens is broken)Can be returned. If the customer makes an incorrect operation, chooses improperly (selected the wrong model by yourself, or bought N many kinds of products for the test, and found it inappropriate after the test) or other man-made damages, it will not be returned or exchanged.
3. Please be sure to read the model and parameters when purchasing the product. Due to the particularity of the product, we will not provide trial service or return or exchange service for the time being, please understand. If the product really needs to be returned, please bear the required freight and reach an agreement with the seller before the return, thank you for your cooperation!
4. All products in our shop are taken in kind. Due to problems with shooting, camera and computer monitors, the color of the pictures when customers buy the products is for reference only, mainly based on the usage and related product descriptions. Customers who are unclear can consult the seller and provide Related technical support.
5. Regarding the problem of size modification: Due to the small amount, the modification size can only be processed manually on the basis of the existing size. There will be a certain tolerance for manual grinding, and the shape is not as perfect as the machine directly makes it, perfectionist Please modify the size carefully. Our shop does not accept the reason that the shape is not round or the side has a small gap after the size is modified to request a return or give a bad review. For customers with particularly high requirements, please choose custom-made or find another way to solve the size problem. Our company I don''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''t hope that after the master has spent a long time grinding it out, the customer requests to return the goods, so that this kind of hurt and money will be avoided as much as possible.