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Lightray  |  SKU: LIT101

PAR METER (PPFD): Lightray Diffuser & Cosine Corrector

Rated 4.9 out of 5
Based on 43 reviews
$28.00
Shipping calculated at checkout.
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Quality First

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Delivery and Shipping

 

BuildASoil Shipping Policy

At BuildASoil, we’re committed to providing the most affordable and reliable shipping possible—for both our customers and our business. We continuously evaluate and improve our fulfillment process to ensure faster, smoother deliveries. We know shipping is often a pain point in shopping online, and our goal is to make it feel painless. For full details, please read the complete policy below.

Notice: Each product page displays accurate estimated delivery windows based on real-time fulfillment and carrier schedules.


📦 Shipping Options 
  • BuildASoil Shipping: Our complimentary shipping method for qualifying orders. We choose the most cost-effective carrier and shipping method. Delivery may take up to 10 business days. Most items qualify when you purchase two or more eligible products. Some qualify individually.
  • Standard Shipping:  A paid option where we ship using standard ground services.   
     
  • Standard Shipping: Rushed Out the Door! Includes everything in Standard Shipping, but adds on same day order processing (not guaranteed).
  • Get It Fast: Our expedited service. Orders are shipped with 2-3 day transit times and are prioritized for fulfillment, with most leaving the same business day (not guaranteed).
  • Overnight It: Ships via overnight service with immediate fulfillment for urgent deliveries.
  • FedEx Freight (Economy or Priority): For large or heavy orders. All freight ships via FedEx Freight unless arranged otherwise. Contact us in advance if no liftgate is required.
  • Pickup at Factory Store – Available Within 24 Hours! Select this option to pick up your order at our factory store. We'll notify you when it's ready. Bring your order confirmation and a valid ID.
Option Cost Transit Speed Fulfillment Speed Notes
BuildASoil Shipping Free Up to 10 business days Standard Free on any eligible items; ships at our discretion
Standard Shipping Paid 3-7 business Days Standard Standard handling and transit
Standard Shipping: Rushed Out the Door! Paid (slightly more) 3-7 business Days Same Day Fast handling out the door with standard transit
Get It Fast Higher 2–3 business days Same Day Fast handling and transit
Overnight It Highest 1 business day ASAP Fastest possible option
Pickup at Factory Store Free N/A Ready In 24hrs Local pickup option
FedEx Freight Economy Varies by order 2–9 business days (varies) Varies For large or heavy orders
FedEx Freight Priority Varies by order 2–7 business days (faster) Varies For large or heavy orders

🚚 Carriers Used

We ship with FedEx, UPS, and USPS. Carrier preference is not guaranteed unless explicitly communicated to us. 


📮 PO Boxes 

Orders shipped to PO Boxes often require additional costs and are not eligible for free shipping. Use a physical address to avoid delays and fees.


🏝️ Outside Continental US

We ship to Alaska, Hawaii, Puerto Rico, Guam, Northern Mariana Islands and the U.S. Virgin Islands. Free shipping generally does not apply to large or bulky items shipped to these locations. Hawaii and Alaska do have more flexibility with this due to carrier policies. Quotes will be calculated at checkout or by request.


🇨🇦 Canada Orders

We do ship to Canada for select items. Canadian customers must choose “UPS Standard® Shipping to Canada with no Surprises!” at checkout to ensure proper customs clearance and avoid unexpected brokerage fees or delays. Orders using other methods may be subject to delays or rejection at customs.


🏭 Vendor-Fulfilled Items

Some products are fulfilled by vendor partners and display estimated ship dates on their product pages. Questions about these items should be sent to support@buildasoil.com.


🚛 Freight Shipments

Freight deliveries involve pallets via box trucks or semis. Liftgate service is assumed unless specified otherwise.

Important: Inspect all freight shipments before signing. Count and examine all packages. Signing the delivery receipt confirms that the order arrived in full and undamaged.


🚛 Full Truckloads

Orders that qualify for full truckload (FTL) delivery will be custom quoted after checkout. Rates are based on location, order volume, and unloading requirements.

  • Indicate if you have a dock, forklift, or unloading equipment.
  • If you need liftgate or manual unload service, please notify us.
  • Contact support@buildasoil.com in advance for FTL quotes.

🔍 Order Tracking

Tracking information is emailed upon shipment. If not received, visit buildasoil.aftership.com and enter your order details. For help, contact support@buildasoil.com.


🛡️ Shipping Protection

This low-cost optional add-on at checkout insures your shipment against loss, theft, and damage. Claims are fast-tracked for resolution or replacement.

Even with protection, we encourage submitting photos, videos, and documentation to assist our carrier claims process.


📋 Claims Policy

All claims must be submitted via support@buildasoil.com. Phone-based claims are not accepted.

Required Documentation:

  • Issue description
  • Photos/videos of damage, missing or incorrect items
  • Images of packaging and labels

Do not discard packaging or damaged items—carriers may require inspection.

Claim Deadlines

  • Damage / Missing Items: Within 5 business days of delivery
  • Incorrect Products: Within 30 days of delivery
  • Lost or Misdelivered Packages: Within 30 days of shipment

⚠️ Responsibility Disclaimer

Once an order leaves our facility, we are not liable for delays, damage, or misdelivery caused by the carrier. We assist with claims but final decisions rest with the carrier.

We have zero tolerance for mistreatment of delivery drivers. Verified misconduct may result in cancellation and refund of your order minus shipping costs.

Description

Lightray Diffuser 🌟

August 2024 Update: Now Usable On Android and I-phone!!

Do you know what your PPFD and DLI are? 

Upgrade your smartphone to a professional light meter with the Lightray Diffuser & Cosine Corrector. Experience top-level accuracy and convenience, right in your pocket! 📱✨

We use this at BuildASoil and find it to be comparable to our Apogee Device that costs over $500!! This is fantastic!

Check out our tutorial on this subject: BuildASoil: HOW TO SET UP YOUR GROW TENT ENVIRONMENT // DLI, VPD, & More (Season 6, Episode 03)

📱 Device Compatibility

Before purchasing or diving into the details of using your new diffuser accessory, it's crucial to confirm that your device is compatible.

🍏 iOS (Apple)

  • iPhone: All models starting from the iPhone 5S (2013) onwards
  • iPad: All models released after 2013

🤖 Android (Samsung, Google, Xiaomi, OPPO, etc.)

Many common Android devices are supported, but unfortunately not all of them. Please check the list of all 180 compatible devices for yours.

Notice: Must use with the Photone or LM-3000 App available for free. 

Do I need to pay for Photone?

No. But Yes. You can download and use the app for free. To measure your specific light accurately, you will need to unlock an additional light source which costs between $3 and $7 one-time and is valid a lifetime.

I purchased and use the Full Spec LED option. 

We also offer additional Pro features (all light sources, color temperature measurements, advanced settings, additional content, premium support) as a subscription for $5 a month or $30 a year that you may cancel anytime.

You won’t be charged anything without explicit purchase. With every purchase you support us in providing you with the best, most accurate and ad-free light meter app in the world — and also our planet!

Features 🌟

  • 📏 Best-In-Class Accuracy: Get precise light measurements rivaling expensive hardware meters.
  • 🔆 Excellent Cosine Correction: Ideal directional response for real-world lighting conditions.
  • 🔬 Swiss Quality: Developed and tested in a Swiss optics laboratory, ensuring premium quality and reliability.
  • 🔧 Easy Clip-On Design: Simple to attach to your device’s front camera, compatible with all newer iPhones and iPads.
  • 🛠️ Hand-Assembled: Each piece is carefully assembled and tested for quality control.

Benefits 🌿

  • 📱 Portable & Convenient: Carry professional-grade light measurement anywhere you go.
  • 💡 Enhanced Precision: Achieve uniform light diffusion for accurate readings.
  • 🌍 Global Compatibility: Compatible with various iPhone and iPad models; not yet available for Android.
  • 📦 Quick Shipping: Orders ship within one business day, with worldwide delivery options.

How It Works 🛠️

The diffuser uses a semi-transparent disc with a microscopically rough surface to scatter light evenly. This allows your device to measure light accurately, even from different directions, thanks to the cosine corrector functionality. Developed by Swiss experts, it ensures professional results every time.

Order Yours Today 🛒Sale Ends Soon

Get the Lightray Diffuser & Cosine Corrector for just $28 (introductory price, regularly $39). Enjoy free shipping included when you purchase 2+ "free shipping available" items. 🌐✈️

See compatibility list with Android and Iphone Devices here: Compatibility List

Questions?

We are here to help and our entire staff knows how to grow. Just reach out via chat, email or even phone. We are passionate about growing and want you to succeed.

Payment & Security

Payment methods

  • Amazon
  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Venmo
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

average rating 4.9 out of 5
Based on 43 reviews
  • 5 Stars
    39 Reviews
  • 4 Stars
    3 Reviews
  • 3 Stars
    0 Reviews
  • 2 Stars
    1 Review
  • 1 Star
    0 Reviews
98% of reviewers would recommend this product to a friend
Quality
Rated 4 out of 5
Value
Rated 4 out of 5
Shopping Experience
Rated 4 out of 5
Customer photos and videos
43 Reviews
Reviewed by Thomas B., from United States
Verified Buyer
I recommend this product
Experience With Organics
1-4 Years
Rated 5 out of 5
Review posted

Par meter

Works as intended.

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Rated 5 out of 5
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Rated 5 out of 5
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Rated 5 out of 5
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Reviewed by John
I recommend this product
Rated 5 out of 5
Review posted

5 Stars

I was using white paper over over my forward facing camera sith the Photone app—and it wasnt cutting it; was not the accuracy i needed. This thing has completely changed my growing!

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Reviewed by Robert
I recommend this product
Rated 5 out of 5
Review posted

5 Stars

Nice

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Reviewed by Alvin R P., from United States
Verified Buyer
I recommend this product
Experience With Organics
0-1 Years
Rated 5 out of 5
Review posted

Diffuser

🤘🤘

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Quality
Rated 5 out of 5
Value
Rated 5 out of 5
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Rated 5 out of 5
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Reviewed by Eugene T., from United States
Verified Buyer
I recommend this product
Experience With Organics
1-4 Years
Rated 5 out of 5
Review posted

Works better than a sheet pf paper

This diffuser is a handy little tool. The app is too, but before, using paper over the camera gave a reading, whether accurate or not, it works good enough to compare from time to time. with the diffuser, I'm getting very different readings, and my lights are stronger than I thought. For the price, well worth it, better than investing in a PAR meter, and works well enough for a home grower for personal use, to give you an idea of how much light is getting to the plant at different spots.

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Quality
Rated 5 out of 5
Value
Rated 5 out of 5
Shopping Experience
Rated 5 out of 5
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