Best Large Fresnel Lens

TDH Lighting 6 INCH RECESSED CAN Light Plastic Shower Trim Clear Glass Fresnel Lens

...to 300%. It is considered the most comfortable magnification for reading small prints, ideal for Viewing and checking tiny hobby and crafting materials, small electronic gadget parts such as screws and pins.
★NON-TOXIC & UNBREAKABLE MATERIAL: The lens is made out of optical grade PVC a superier material than other fresnel lens, which provides crystal clear image quality with minimal distortion, pefect for seniors with aging eyes and low vision individuals..
★2 BONUS BOOKMARK MAGNIFIERS & 2 WALLET LENSES: Each package comes with 2 US letter size sheets, 2 bonus bookmark magnifiers and 2 wallet lenses, the smaller lenses are very convenient to bring them with you so you will alwyas have extra set of eyes..
★LIGHTWEIGHT & PREMIUM MATERIAL: All the lenses are made out of Unbreakable & optical grade PVC, the largest one only weighs 1 ounces and it is Ideal for longer reading time, because of the weight advantage you will be able to hold it with minimal fatigue..
★LARGE VIEWING AREA: The Large US letter size magnifying sheet is measured 7" X 10.5" in viewing area which covers and Magnifies an entire page at once without having you to reposition it all the time as the other smaller magnifiers..

..., means you stand further from heat and still get accurate high temp measure result. NOTED: The laser pointers are only provides general positioning, and the Lens Area below the laser hole is the actual temperature measurement area..
✔【ACCURATELY MEASURE】Equipped with the latest temperature sensor and advanced Fresnel lens,This IR Thermometer measure surface temperatures between -50℃~800℃/-58℉~1472℉ with an accuracy of ±2% within 0.5 seconds response with. Thanks to the 0.1~1 Adjustable Emissivity, you can get accurate measure from different materials, such as: gold, silver, iron,brick,ceramics,etc.
✔【High Low Temperature Alarm】This industrial laser temperature gun will audible alert you once the measured temp is higher or lower than the set temp. Auto OFF(The shutdown time can be adjusted) Data Hold, MIN/MAX/Average temp testing, Fahrenheit / Centigrade switchable..
✔【Large Backlit LCD Screen】With the large backlight display, you don’t have to worry about read the measurement in dim area. Comes with protective case and battery. This digital infrared thermometer is specially designed for measuring inanimate objects. Class II laser, optical power 003c0.5mW . Wavelength 630~670 um..
✔【MULTIPURPOSE INFRARED THERMOMETER】 In....

CEILING OCCUPANCY SENSOR uses passive infrared technology, PIR motion sensor to automatically turn ON/OFF lights. This motion sensor features a bright LED indicator when the sensor senses motion..
OCCUPANCY SENSOR Two interchangeable Fresnel lenses for perfect detection based on application needs. This allows the sensor to cover any ceiling height from 8 feet to 50 feet..
EASY INSTALLATION This ceiling motion detector only requires a 1/2 inch knockout cutting material costs and installation time..
MULTI-LEVEL, 360 degree interchangeable lens. Compatible with LED, incandescent, CFL lighting. Easy adjustable sensitivity control via DIP switch. Adjustable sensitivity 50%-100%..
LARGE SENSOR RANGE Up to 2800 sq. ft coverage, 360 degree field view, Operating temperature (32 – 131°F), 120VAC 0 - 800W Ballast or Tungsten, UL-Listed. 1-Year Warranty.

A fraction of the size of most full-frame 500mm lenses.
Specially designed Phase Fresnel (PF) lens element enables a compact design.
Vibration reduction (VR) image stabilization for sharper and steadier.
Durable construction with advanced weather sealing, internal focus and Nikon nonstick fluorine coating.

✔️14"SMARTPHONE SCREEN MAGNIFIER: Cell phone screen magnifier, which can phone magnifying screen by 3-5 times to keep the distance from your smartphone reduces digital eye strain when viewing screens and protect your eyes..
✔️TOP QUALITY LENS: Thin foldable mobile phone amplifier,make the picture more HD,The high-definition effect of the lens is extremely perfect and not to easy to break..
✔️RIGOROUS DESIGN: The HD 3d screen magnifier is made up of the acrylic material,ABS + 3D screen Super slim,Simple and generous appearance,8mm lightweight design,booksize feels good when you carried..
✔️EYE-PROTECTED:Smart phone screen magnifier Use fresnel lens to reduce radiation and reduce visual fatigue,especially good for children and elderly people,helps them protect their eyes from close viewing objects,Farther away from the phone..
✔️A PERFECT HOLIDAY GIFT: It is best choice of holiday gifts for your friends or familys,We are believe you will love your new cell phone screen amplifier,however,if not satisfied,we will give you a full refund..

Packaged in the Adventurer Aluminum Survival Kit Box with weather resistant rubber seal and locking clasps with numerous U.S. Military, U.S. Govt, and NATO approved /issued items..
Includes personal First Aid Kit, Fishing Kit, and Sewing Kit.
as well as pocket knife, derma safe knife, and a wire saw..
Includes Gel Fuel, Fire Starter, Tinder Quik Tabs, All Weather Matches, Fresnel Lens, and a Space Blanket..
Includes Micro Pur water purification tablets and water bags..
Includes Signal Mirror, button compass, whistle, Type 1A Utility cord, and many other items listed below..

Application: suitable for reading newspapers, maps, and magazines, good for home traveling, experimental observation and others.
Portable and useful: these thin Fresnel lens are well made, easy to carry.
They are simply designed, comfortable to use.
Easy to store: the magnifier is lightweight and pocket size.
You can place it in a purse, wallet, pocket and so on.
How to use: place the magnifier above the object to be observed so that the lens is parallel to the line of sight, distance imaging is clear and maximum magnification is nice, find the better viewing position when moving the identified object.
Good performance: the pocket magnifier is flexible and its magnification is 3x, made of good quality PVC plastic material, providing clear and nice viewing effects.