Marshe

Hello friends, this is the second article on customized led lenses.

When you hear "free optical design," your true thought might be:

"Is this just a bait to lure you in with freebies, only to charge you later?"

Here's our answer in one sentence:

At Sunshineopto, free optical design and free LED circuit design are our promise to every customer—whether you order 100 or 100,000 units.

This article clearly explains three things: what we specifically design, what we deliver, and how the entire process proceeds.

As a leading optical lens manufacturer with 16 years of expertise in Shenzhen, we have completed over 3,000 sets of customized molds and hold multiple optical patents.

Each free design is overseen by a seasoned optical engineer with 16 years of experience.

1.Start from your needs

Requirement communication is the most critical step in the entire design process.

We will ask you: the application scenarios of LED lights, the LED model or brand, the target beam angle, the size limitations within the luminaire, the estimated quantity, and any special requirements such as UV resistance or high-temperature tolerance.

The clearer your requirements, the more precise our design will be.

If unsure about the details? We have 16 years of professional expertise to help clarify.

Many clients who are new to custom LED lens manufacturing are unsure about what preparations to make.

Our 24/7 online team will guide you step by step.

2. How to Perform Optical Design

The essence of optical design is to create an accurate map for light—indicating the path each beam should take.

Just like a chef adjusting a recipe—material refractive index, thickness, and surface curvature, each parameter influences the final "flavor" (optical efficiency).

When designing LED lenses, our primary objectives have always been to maximize light efficiency, precisely control the beam angle, and eliminate halos and dark zones.

3. The tools we use—LightTools and Zemax

What does LightTools do: Ray tracing and illuminance simulation—essentially simulating millions of light rays in a computer to observe their effects on target surfaces.

What does Zemax do: Optical surface optimization and aberration analysis—ensuring that lens surface shapes are physically manufacturable and performance-optimized.

How to coordinate the two: LightTools tells you "how light travels," while Zemax tells you "what the lens should look like.".

These are widely recognized professional optical design software tools, and our engineers use them daily to design LED lenses for clients.

4. What will you receive

Based on your requirements, our optical engineer will complete the design of the optical and lens structure within one week and submit it to you for confirmation.

Here is the specific content you will receive:

IES luminaire distribution file: An industry-standard format that can be directly imported into lighting design software such as Dialux and Relux, used to simulate the lighting effects of luminaires in real-world spaces.

Ray Tracing Report / Light Distribution Diagram: Visually demonstrates beam shape, angles, and illuminance distribution—clearly showing where each beam goes.

Optical Efficiency Report: Luminous Flux Utilization of Lenses – In other words, how much light is effectively utilized and how much is wasted.

3D model files: Typically in STEP or IGES format, covering both optical surfaces and structural features (such as installation clips, positioning posts, and bracket locations) to facilitate inspection of the lens's fit with the luminaire housing and sealing components.

Material Recommendation: PC or PMMA? Is UV resistance required? What temperature resistance is needed? We will provide professional advice based on your actual application scenario.

With 16 years of experience as an optical lens manufacturer, every design report undergoes internal optical testing and verification to ensure reliable data.

5. Free LED PCB Board Design

We offer one-stop services, and if you also need matching LED circuit boards, we provide free design as well.

The delivery includes: aluminum substrate layout drawings, Gerber files (ready for direct submission to PCB manufacturers for production), BOM material list, and LED driver power supply matching recommendations.

Why this matters: The coordination between lenses and light boards directly impacts the final lighting effect. Having both designed by the same team is far more efficient than sourcing them from two separate suppliers.

From optical lens design to LED circuit design, LED PCB board design and production, and the supply of LED chips and power supplies, we can handle it all.

We look forward to collaborating with you.

6. Design Cycle

According to our internal process, the optical engineer will complete the design of the optical and lens structure within one week and submit all documents for your confirmation.

Standard Project: After requirement confirmation, optical and structural design shall be completed within 7 days.

LED circuit design: conducted in parallel with optical design and delivered simultaneously.

Complex free-form surface design: It may take a bit longer, but we will keep you updated throughout the process.

You can propose any revisions at any time, and we'll keep revising until you're satisfied—revisions are also free of charge.

FAQ

Q: Is free optical design really free? Are there any hidden conditions?
A: It's completely free. This is our promise to every client, regardless of order size. Even if you ultimately decide not to proceed with mold production at our facility, you can still take away the design reports and IES files without paying a single penny.

Q: I don't have a background in optical engineering. Can I communicate effectively with your designers?
A: No problem at all. Just let us know what effect you want (e.g., "spotlight with a 15° beam angle" or "even lighting without dark zones"), and we'll handle the technical details.

With 16 years of project experience, we have honed our ability to "translate" client requirements.

Question: Will you use my design for other clients?
A: Absolutely not. Your optical design is 100% yours. We sign a confidentiality agreement, and the molds also belong to you.

Q: My requirements are not entirely clear at the moment. Could you provide several design proposals for me to compare first?
A: Yes. During the design process, we can provide you with multiple parameter options (such as different beam angles or material selections) for comparison and selection to find the most suitable one. All preliminary directional adjustments are free of charge.

Q: Does the free design include a reflective cup?
A: Yes. Whether you need lenses or reflectors, optical design services are free of charge. We will recommend the most suitable solution based on your application scenario (e.g., outdoor floodlights, sports venue lighting, etc.).

Q: What do I need to provide during the design process?
A: LED model, desired beam angle, usage scenario of the LED luminaire, and available internal dimensions of the luminaire. Providing reference images would be even better.

Q: Is there any difference in quality between free and paid designs?

A: There is no difference. All design tasks are performed by the same senior optical engineer, using the same professional software and adhering to the same process standards. We offer free design services to lower your decision-making threshold and R&D costs—this is made possible by our 16 years of experience with over 3,000 molds.

Q: What is the maximum number of times a project can be modified? Is there a limit?
A: There is no fixed limit on the number of revisions. We will continue to make adjustments within a reasonable range until the optical solution meets your satisfaction. As long as the initial design direction is correct, typically 1-2 rounds of fine-tuning will finalize the design. If there are significant changes in your requirements during the communication process (e.g., from 15° to 60°), we will also redesign it free of charge—just inform us as early as possible.

Why Sunshineopto's Free Optical Design is Trusted

We, SunshineOpto, are a Shenzhen factory with 16 years of experience in LED optical design and core component manufacturing. We have tackled various challenging projects, boasting extensive professional expertise and experience in client communication.

Over 3,000 custom mold projects: Transforming designs into manufacturable lenses, we know exactly where every pit lies.

Professional software + experienced engineers: Design quality does not compromise just because it's free.

24/7 Online Support: Whether you're in North America or Europe, responses are never delayed overnight.

One-stop capabilities: lens optical design, reflector design, LED circuit design—all free of charge. We don't specialize in just one of these.

Overall, what you receive is not just a verbal promise of "free," but a full set of professional deliverables: IES files, light distribution diagrams, efficiency reports, 3D drawings covering optics and structure, material recommendations, and LED circuit design plans—all completed within a week for your review.

Tell us your LED model, beam angle, and size requirements. Our optical engineers will complete the optical and lens structure design within one week and submit all documents for your review.

Click the website chat button or send an email directly, and our engineers will reply within 24 hours.