Focal Length 40mm Convex Lens of 2025
Best Choice1
HENGYANGGUANGXUE12x10mm(Sizes),Plano-Convex Cylindrical Lenses,Uncoated,N-BK7,Focal Lengths Available 40mm,Wavelength Range: 350 nm - 2.0 µm(Uncoated),Optical Lens,Heng Yang Guang Xue
Main highlights- Wavelength Range:350 nm - 2.0 µm
- Substrate Material:N-BK7
- Sizes:12x10mm,Focal Lengths Available:40mm
- Radius:20.68mm，Back Focal Length:38.30mm
- Center Thickness:2.60mm,Edge Thickness:2.00mm
9.8Exceptional
View offer on:
Show more
- Curious about how we select the top products for you? Explore How It Works
Value for Money2
HENGYANGGUANGXUEDiameter 40mm, K9 Bi-Convex Spherical Lens Uncoated,Focal Length 40mm,Wavelength 350-2000nm,K9 Glass Focusing Beam Expanding Collimator Lens,High-Precision Optical Lenses.
Main highlights- wavelength 350-2000nm(Uncoated )
- Substrate Material:(K9)N-BK7 (Grade A)a
- Radius(R) 38.85mm,Back Focus(Fb) 35.24mm
- Diameter 40mm Focal Length 40mm
- Center Thickness(Tc) 13.59mm,Edge Thickness(Te) 2.50mm
9.7Exceptional
View offer on:
Show more
3
PATIKILPATIKIL 10cm Focal Length 40mm Double Convex and 10cm Focal Length 40mm Double Concave Lens 1 Set, 2 Pack Glass Optically Polished Round Edges Lens for Physics Experiment Classroom, Clear
Main highlights- Note: Double concave lenses are often used in combination with other lenses to create specific optical effects. Remember to handle the lens with care to avoid scratches or damage to the surface.
- Concave Lens: Place the concave side of the lens facing the object from which you want to disperse the light. Adjust the distance between the object and the lens until the desired level of dispersal is achieved. Convex Lens:Once you have determined the focal length, position the lens in front of the light source. Move the lens back and forth until the image of the object is in focus on the screen or surface.
- Color: Transparent; Material: Glass; Focal Length (Double Convex Lens):10cm; Focal Length (Double Concave Lens): 10cm; Diameter(Double Convex Lens):40mm / 1.54"; Diameter(Double Concave Lens):40mm / 1.54"; Packing List: 2 x Glass Lens
- Application: Double concave lenses are used to disperse light. The double convex lens is a type of lens that is thicker at the center than at the edges and is used to gather light. They can make telescopes, suitable for a variety of applications, including scientific experiments, photography, and optical instruments.
- Advantage: Made of quality glass that is durable, scratch resistant, and provides excellent optical performance. Round edges have been polished, it is not easy to hurt your hand when you assemble it. Designed with a double concave shape that let the light diffuse and produces virtual images. The double convex shape of the lens provides a wider field of view, resulting in clearer and sharper images. The lens is accurately measured and has consistent curvature.
9.5Excellent
View offer on:
Show more
4
MECCANIXITYMECCANIXITY Double Convex Lens, 2.36"(60mm) Focal Length 1.58" (40mm) Diameter Optically Worked Glass Polished Ground Edges Great for Physics Class, 2 Pack
Main highlights- The focal length of the lens is 60mm / 2.36inch; The size of the lens is 40 x 7mm / 1.58 x 0.28 inch (OD*H)
- The double convex lens has outward convex surfaces on both sides, which can gather the light passing through. In instruments such as magnifiers, microscopes, and telescopes, it is used to focus light to enlarge the image. In camera lenses, it is used to focus and adjust images, and can also be used in daily physics teaching experiments.
- Please store and use it properly to avoid scratches and damage to the mirror surface.
- Once you have determined the focal length, position the lens in front of the light source. The side of the lens that is curved outward should face the object you want to focus the light on. Move the lens back and forth until the image of the object is in focus on the screen or surface.
- Made of quality glass that is durable, scratch resistant, and provides excellent optical performance. Round edges have been polished, it is not easy to hurt your hand when you assemble it. The lens is accurately measured and has consistent curvature, ensuring consistent performance and results.
9.4Excellent
View offer on:
Show more
5
JIATONGJIATONG 5PCS X Optical Glass Lens Without Edge Dameter 40MM Flat-Convex Lens, Focusing LED Convex Lens (Φ40mm*H8.5*F60)
Main highlights- Package Included:5PCS X Optical Glass Lens Without Edge
- Optical glass convex lens is applicable to LED spotlights, car lights, focusing flashlights, projection lights, explosion-proof lights, down lights, and other lighting products. It has high temperature resistance, non-aging, high intensity, high transmittance, uniform light spot, shadow, dark area. It can be used with various high-power LED 1W, 3W, 5W, 8W, 10W 15W, 20W, 50W and other ultra-high-power LED products
- Material: high borosilicate glass
- Light transmittance: 95% ; Refractive index: 1.474 ;Working temperature: - 50 to 450 degrees
- Light angle: adjustable angle (the actual focusing angle can be obtained by adjusting the distance between the lens and LED)
- Diameter:40mm Height:8.5mm Focal Length:F60mm
9.2Excellent
View offer on:
Show more
6
CEROMYConvex Lens Set Diameter 30mm 40mm 50mm Glass Lens, Focal Length 50mm 100mm, Double-Convex Lens for DIY Projector 1pc(30 x 50mm)
Main highlights- When light rays pass through a biconvex lens, they are deflected towards the principal optical axis and converge at a point, which is the focal point
- This order encompasses 1pc of convex lens
- Suitable for a wide range of lighting and optical fields: these lenses are suitable for a variety of lighting products and optical instruments, such as sensors, optical instruments, floodlights, etc., showing their versatility and adaptability
- Great physical and optical properties: the product has physical properties such as high temperature resistance, aging resistance and high strength, as well as high light transmittance and uniform light spot, ensuring great optical performance
- Diameter * focal length represents the dimensions.
9.0Excellent
View offer on:
Show more
7
EISCOEISCO Double Convex Lens, 50mm Focal Length, 1.5" (38mm) Diameter - Spherical, Optically Worked Glass Lens - Ground Edges, Polished - Great for Physics Classrooms
Main highlights- SPHERICAL || Lens measures 1.5" (38mm) in diameter
- OPTICALLY WORKED GLASS || Made of high quality, optically worked glass. Highly polished with ground edges
- GREAT FOR PHYSICS CLASSROOMS || This optically true lens is excellent for physics classroom demonstrations in optics and light refraction
- DOUBLE CONVEX || Highly polished, double convex lens
- 50MM FOCAL LENGTH || Converging lens with a 50mm focal length
8.8Very Good
View offer on:
Show more
8
PATIKILPATIKIL 4" (100mm) Focal Length Double Convex Lens, 3 Pack 50mm Diameter 9mm Height Glass Optically Polished Round Edges Lens for Physics Experiment, Clear
Main highlights- Note: Remember to handle the lens with care to avoid scratches or damage to the surface.
- Instruction: Once you have determined the focal length, position the lens in front of the light source. The side of the lens that is curved outward should face the object you want to focus the light on. Move the lens back and forth until the image of the object is in focus on the screen or surface.
- Color: Transparent; Material: Glass; Focal Length: 100mm; Overall Size: 50 x 9mm / 1.97 x 0.35 inch(OD*H); Packing List: 3 x Glass Len
- Application: The double convex lens is a type of lens that is thicker at the center than at the edges and is used to gather light. It can make telescopes, suitable for a variety of applications, including scientific experiments, photography, and optical instruments.
- Advantage: Made of quality glass that is durable, scratch resistant, and provides excellent optical performance. Round edges have been polished, it is not easy to hurt your hand when you assemble it. The double convex shape of the lens provides a wider field of view, resulting in clearer and sharper images. The lens is accurately measured and has consistent curvature, ensuring consistent performance and results.
8.7Very Good
View offer on:
Show more
9
DADAKEWINDADAKEWIN Diameter 40mm Double Optical Lens High-Precision Concave-Convex Lens Processing Customized Professional Experimental Components (Diameter : 40mm, Focal Length : 60mm)
Main highlights- Usage: Optical
- Structure: Double Convex
- Material: Glass
- Effective focal length: 60mm
- Diameter: 40mm
8.5Good
View offer on:
Show more
10
PATIKILPATIKIL 5cm,10cm Focal Length Double Convex and 7.5cm,10cm Focal Length Double Concave Lens 1 Set, 6 Pack Glass Optically Polished Round Edges Lens, Clear
Main highlights- Note: Double concave lenses are often used in combination with other lenses to create specific optical effects. Remember to handle the lens with care to avoid scratches or damage to the surface.
- Material: Glass; Double Convex Lens: 1# Focal Length: 5cm, Diameter:30mm / 1.18", 2# Focal Length: 10cm, Diameter:40mm / 1.57", 3# Focal Length: 10cm, Diameter:50mm / 1.97"; Double Concave Lens: 1# Focal Length: 5cm, Diameter:30mm / 1.18", 2# Focal Length: 10cm, Diameter:40mm / 1.57"L 3# Focal Length: 10cm, Diameter:50mm / 1.97"
- Concave Lens: Place the concave side of the lens facing the object from which you want to disperse the light. Adjust the distance between the object and the lens until the desired level of dispersal is achieved. Convex Lens:Once you have determined the focal length, position the lens in front of the light source. Move the lens back and forth until the image of the object is in focus on the screen or surface.
- Application: Double concave lenses are used to disperse light. The double convex lens is a type of lens that is thicker at the center than at the edges and is used to gather light. They can make telescopes, suitable for a variety of applications, including scientific experiments, photography, and optical instruments.
- Advantage: Made of quality glass that is durable, scratch resistant, and provides excellent optical performance. Round edges have been polished, it is not easy to hurt your hand when you assemble it. Designed with a double concave shape that let the light diffuse and produces virtual images. The double convex shape of the lens provides a wider field of view, resulting in clearer and sharper images. The lens is accurately measured and has consistent curvature.
8.4Good
View offer on:
Show more
Similar products on Amazon
