OP6656 Plano-Concave Lenses

Plano-concave Lens Description

Plano-concave lenses are optical lenses designed to diverge parallel light rays. With a negative focal length and negative spherical aberration, these lenses are frequently used to correct aberrations such as astigmatism, spherical aberration, coma, and distortion in optical systems. The concave surface typically faces the distant object or infinity. Plano-concave lenses are usually manufactured from optical K9 glass with anti-reflective coatings optimized for the wavelength range of 400-700 nm. Additionally, some lenses are made from ultraviolet quartz glass, which exhibits excellent transmission in the UV range and a low thermal expansion coefficient. For specialized applications in the ultraviolet range, these glasses may be coated with UV anti-reflective coatings.

Plano-concave Lens Applications

- Optical instrumentation: Utilized in telescopes, microscopes, and other instruments where light must be bundled or focused over a wide area.

- Imaging systems: For dispersing light over a large field of view in cameras and imaging devices.

- Optical filters: Employed in conjunction with other optical components to achieve specific light behaviours, such as beam shaping and distortion correction.

- Laser systems: In laser systems, they assist in controlling beam size and divergence, particularly in applications such as laser scanning and beam shaping.

Plano-concave Lens Packaging

Our products are packaged in custom cartons of various sizes based on material dimensions. Smaller items are securely packed in polypropylene cartons, while larger items are placed in bespoke wooden crates. We ensure strict adherence to packaging customization and the use of suitable cushioning materials to provide optimal protection during transit.

Packaging: Carton, wooden crate, paper barrel, iron barrel, or custom options.

Please refer to the packaging details for your information.

Manufacturing Process

1. Material selection: Choose optical materials such as K9 glass, quartz, or UV quartz depending on the application.

2. Cutting: The raw material is cut into lens blanks.

3. Grinding: The concave (curved) surface is shaped, and the flat (plane) surface is ground to the required specifications.

4. Polishing: Both surfaces are smoothed to achieve optical clarity and surface quality.

5. Coating (optional): Apply anti-reflective or UV coatings, if necessary, to enhance performance.

6. Inspection: Check focal length, surface accuracy, and overall quality.

7. Beveling: Chamfer edges to prevent damage and ensure smooth handling.

8. Packaging: Carefully package the lenses to avoid damage during transit.

Frequently Asked Questions about Plano-concave Lenses

Q1. What is a plano-concave lens?

A plano-concave lens is an optical lens with one flat (plano) and one concave (inwardly curved) surface. It is designed to deflect light rays entering the lens, causing them to diverge.

Q2. What materials are plano-concave lenses made from?

Plano-concave lenses are typically made from optical materials such as K9 glass, quartz, quartz glass, or sapphire, depending on the desired application and wavelength range.

Q3. What is the primary function of a plano-concave lens?

The primary function of a plano-concave lens is to deflect light passing through it, making it useful for applications requiring beam expansion or light scattering, such as in laser systems or optical instruments.

Performance Comparison Table

Different Materials of Plano-concave Lenses

Related Information

Plano-concave lenses are typically manufactured from K9 glass, and their anti-reflective coatings are designed for the wavelength range of 400-700 nm. Some lenses are also constructed from ultraviolet quartz glass as a substrate. Ultraviolet quartz glass offers excellent transmission in the UV range and a low expansion coefficient. For specific applications, UV anti-reflective coatings may be applied.