Back view of Baiwei L521 linear LED lens

Front view of Baiwei L521 linear LED lens

Collection of Baiwei L521 series linear LED lenses

L521 90° Extruded PC Optical Lens for LED Linear Lighting — 30 × 8.5 mm

A 30 mm-wide PC optical lens combining a nominal 90° beam angle with an 8.5 mm cross-section height for compatible LED linear lighting profiles.

Manufacturing Notice: Our Minimum Order Quantity (MOQ) is 2,000 Pieces (or 1,000 Meters for extrusion).

Model	L521
Product Type	Extruded Optical Lens
Nominal Beam Angle	90°
Cross-Section Size (W × H)	30.0 × 8.5 mm
Length	Custom cut to length

REQUEST A QUOTE

Product Overview

90° Beam Angle in an 8.5 mm-High Lens

The L521 is an extruded PC optical lens for LED linear lighting, with a 30.0 mm-wide × 8.5 mm-high cross-section and a nominal 90° beam angle. Its combination of width, height and beam angle makes it an option to consider when developing linear luminaires with limited space for the optical component. Select the L521 by checking both the profile interface and the light distribution required for your project.

Nominal 90° Beam Angle — An optical option for projects seeking a broad lighting distribution.
8.5 mm Cross-Section Height — A defined height for checking available space within the luminaire.
30 mm Lens Width — A clear reference for comparison with the aluminum profile drawing.
PC Construction — A polycarbonate optical component for compatible linear lighting assemblies.

Dimensions & Mounting

Check the 30 × 8.5 mm Cross-Section

The L521 measures 30.0 mm in overall width and 8.5 mm in overall height. Compare these dimensions with the available space inside your lighting profile before checking the detailed mounting interface. Confirm the retaining features, lens seating position and clearance above the LED board. Profiles with the same nominal width may use different mounting geometries.

Mounting Interface — Compare the profile opening and retaining features with the lens cross-section.
Internal Clearance — Check the space available for the lens and its position relative to the LEDs.
Fit Verification — Confirm the assembly using a detailed drawing and a sample where available.

Optical Performance

Match the 90° Beam to Your Lighting Layout

The L521 has a nominal 90° beam angle. The resulting distribution depends on the LED source, emitter arrangement and position relative to the lens. When assessing coverage, consider the distance from the luminaire to the illuminated surface. Evaluate the complete LED-and-lens assembly to confirm whether the distribution and uniformity meet your application requirements.

Nominal Beam Angle: 90°
LED Configuration: LED package, emitter spacing and position relative to the lens
Application Requirements: Installation distance, target coverage and desired uniformity

Luminous intensity distribution curve and photometric data of Baiwei L521 linear LED lens

Applications & Distribution

Explore Applications for the L521

Consider the L521 for the following linear lighting applications, with suitability confirmed through mechanical and optical evaluation.

Recessed linear LED lights illuminate a modern lobby with stone walls and wood accents.

Architectural Linear Lighting

Controlled illumination for recessed linear aluminum profiles.

Linear LED lights in a glass display case illuminate ceramic vessels on stone plinths.

Display Case Lighting

Focused illumination for products and objects in enclosed showcases.

Continuous ceiling-mounted linear LED lights run above a supermarket aisle between stocked shelves.

Supermarket Aisle Lighting

Linear illumination for store aisles and merchandise displays.

Project Support

Define Your L521 Project Requirements

Profile & Assembly Details

Share your aluminum profile drawing, mounting interface and LED board position to help define the required fit.

Lighting Requirements

Provide the installation distance, target coverage and LED configuration so the intended optical performance can be assessed.

Order & Sample Inquiry

Specify the required lens length, estimated quantity and project schedule. Include any sample requirements in your inquiry.

Request a B2B Quote Request a Sample

Product FAQ

Before you choose L521 90° Extruded PC Optical Lens for LED Linear Lighting — 30 × 8.5 mm

What are the dimensions of the L521 lens?

The L521 measures 30.0 mm wide × 8.5 mm high, approximately 1.18 × 0.33 inches. These are the overall cross-section dimensions.

What material is the L521 made from?

The L521 is made from polycarbonate (PC). For projects with specific material requirements, include the required grade or supporting documentation in your inquiry.

What is the beam angle of the L521?

The nominal beam angle is 90°. Actual distribution should be evaluated with the intended LED source and mounting geometry.

Will the L521 fit any 30 mm-wide aluminum profile?

Width alone does not establish compatibility. Check the profile opening, retaining features, internal clearance and LED position against the detailed lens cross-section.

Can the L521 replace the L520?

The two models share a nominal width of 30 mm, but their heights and beam angles differ. The L521 is 8.5 mm high with a nominal 90° beam angle; the L520 is 10.0 mm high with a nominal 80° beam angle. Interchangeability requires verification of the mounting interface and optical performance.