**Product Specifications**
**Brand:** YIDUN
**Product Name:** Optical Anti-blue Light Anti-radiation Glasses
**Model Number:** /
**Suitable for:** Unisex
**Frame Material:** PC
**Lens Material:** Resin
**Lens Weight:** Approximately 13g
**Lens Width:** 56mm
**Lens Height:** 34mm
**Nose Bridge Distance:** 17mm
**Temple Length:** 142mm
**Blue Light Blocking Power:** +1.50
**Blue Light Blocking Type:** Anti-blue light presbyopic lock
**PD:** 62-64mm
**Face Shape:** Suitable for most face shapes
**Additional Information:** Hand measurements may have slight errors, please refer to the actual product for accuracy.
**Regulation:**
| Age (years) | Recommended Power (Diopters) |
|-------------|------------------------------|
| 45-49 | +100 |
| 50-54 | +150 |
| 55-59 | +200 |
| 60-64 | +250 |
| 65-69 | +300 |
| 70-74 | +350 |
| 75 and above| +400 |
**Patent Information:**
**Utility Model Patent Certificate No.:** 4801140, 4728124
**Utility Model Patent Name:** Optical Anti-blue Light Anti-radiation Glasses, UV Coating Mirror
**Inventor:** Meirongsheng
**Patent Number:** ZL.201520556719.3, ZL201520556646.8
**Patent Application Date:** July 29, 2015
**Patentee:** Nanchang YIDUN Technology Co., Ltd.
**Announcement Date:** December 9, 2015
**Authorization Date:** January 20, 2016
**Patent Term:** 10 years from the date of authorization
**Note:** The above prescription powers are for reference only and may vary depending on individual presbyopia severity.
