You can safely enjoy the rare thrill of watching a solar eclipse with these Solar Eclipse Safety Glasses (20-pack) from American Paper Optics. Featuring an optical density of five or greater, compliant with ISO 12312-2, and CE certified, the colorful, folding paper glasses are made in the USA with 2-mil, scratch-resistant black/silver polymer lenses that filter out 100% of harmful ultra-violet and infrared rays and 99.999% of intense visible light. These independently tested glasses are safe for viewing all phases of a solar eclipse.

ISO 12312-2 Certified for Solar Viewing    For Safe Viewing of Solar Eclipse    Blocks 100% of Harmful UV & IR Light    Blocks 99.999% of Intense Visible Light    Made in the USA

• ISO 12312-2 Certified for solar viewing
• Recommended by AAS, the American Astronomical Society

Related Questions and Answers

Q: 1. What is the interpupillary range? Thank you!

A: Sorry La Scala only list these specifications: LaScala Optics LSI03 Specs Magnification 3x Objective Lens Diameter 25 mm Angle of View 11.2° Minimum Focus Distance 6' / 1.8 m Focus Type Center Battery None Dimensions 4.5 x 2.3 x 2.1" / 11.4 x 5.8 x 5.3 cm Weight 7 oz / 198.5 g Package Weight 0.505 lb Box Dimensions (LxWxH) 5.6 x 3.2 x 2.05"

Q: 2. Can these be used a regular sunglasses for driving ?

A: We would not recommend it. Eclipser HD Solar Glasses from American Paper Optics are ISO and CE certified safe for direct solar viewing. These glasses filter out 100% of harmful ultraviolet and infrared rays and 99.999% of intense visible light, so you can watch a once-in-a-lifetime eclipse without fear of damage to your eyes. We would recommend not using these while driving.

Q: 3. Celestron says “ Never use this filter if your camera has an optical viewfinder.” Does that mean to not use it on a Nikon D500?

A: Because the Nikon D500 viewfinder is looking through the lens that is filtered, it is safe to use the Celestron EclipSmart Universal Solar Filter for Optics 75mm to 100mm with your camera.

Q: 4. I'm considering these for my Mom. She wanted some theater glasses stronger than normal. Are these too big to fit into an evening or small purse and/or do you know if they come with a cord or anything to go around the neck? Any other items you recommend I buy along with these?

A: My Mom likes hers. They are approximately 4.5 x 2.75 when opened up, and the barrels are 1.75 at their beltline. The bag they travel in is 4.5 x 6 when laid flat. I don't think there was a chain, but we got a matching brass chain. So they are very nice opera glasses, stronger than the usual glasses. One thing, we had to put a little bit of medium thread lock on the set screw to keep it from working loose--easily done. Can't think of any other accessories that would be needed.

Q: 5. Can I use this on a Nikkor 200-500mm lens on a Nikon Z6?

A: The outside diameter of the Nikon 200-500mm lens is too large to fit the Celestron filter. You can use this Haida instead: https://bhpho.to/38vHAQw

Q: 6. Could I put this on a Micro 4/3rds camera w/Flip out OLED display (and telephoto lens)??

A: The Celestron EclipSmart Universal Solar Filter for Optics 75mm to 100mm will fit on the front of the lens as long as your lens is between 75mm and 100mm in outside diameter. The filter would not be near the camera so it would not affect the use of the a flip screen.

Q: 7. Does the handle telescope for more comfortable holdin?

A: Yes this handle extends for comfort. It is adjustable.

Q: 8. How quickly do these degrade? Should I be able to view both the eclipse in 2023 and 2024 with the same pair of glasses?

A: Solar glasses such as the American Paper Optics Eclipser HD Solar Glasses are estimated to be good for about 3 years from the date of production so they will be fine for both eclipses.

Q: 9. Is the diameter of the actual filter part?

A: The diameter of the actual solar filter on the Celestron EclipSmart Universal Solar Filter is 63.5mm.

Q: 10. Can one eyepiece be focused to better match eye differences?

A: Agree with the previous answers.