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Lightray  |  SKU: LIT101

PAR METER (PPFD): Lightray Diffuser & Cosine Corrector

Rated 4.8 out of 5
Based on 39 reviews
$28.00
Shipping calculated at checkout.
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Delivery and Shipping


BuildASoil Shipping Policy

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




Shipping Options

At checkout, you’ll be presented with the following options:

  • BuildASoil Shipping (Free)
     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, without prioritizing fulfillment speed.

  • Standard Shipping: Rushed Out the Door!
     Includes everything in Standard Shipping, plus guaranteed same business day shipment if the order is placed before our cutoff time.

  • Get It Fast
     Our expedited service. Orders are shipped via 2–3 day methods and prioritized for fulfillment, with most leaving the same business day (not guaranteed).

  • Overnight It
     For urgent deliveries, this ships your order via overnight service with immediate fulfillment, within 24 business hours..

  • FedEx Freight (Economy or Priority)
     Large or heavy orders that qualify for freight shipping will be offered these options. All freight ships via FedEx Freight unless otherwise arranged. If you require a non-liftgate delivery (e.g. dock or forklift available), please contact us in advance.




Carriers Used

We primarily ship with FedExUPS, and USPS. If you need a specific carrier for a specific shipping address, please reach out to us by phone at 855-877-7645, or send us an email to support@buildasoil.com, which will create a customer support ticket. You also have the option of submitting a ticket through the support.buildasoil.com site.




PO Boxes

Orders addressed to PO Boxes often incur additional costs and are ineligible for free shipping. To avoid delays or fees, we recommend using a physical shipping address whenever possible.




Shipping Outside the Lower 48

We do ship to Alaska, Hawaii, Puerto Rico, Guam, the U.S. Virgin Islands, and other U.S. territories.
Free shipping does not apply to most large or bulky items sent to these locations. Standard or custom rates will be calculated at checkout. Contact us if you need a freight quote for outlying areas.




Vendor-Fulfilled Items

Some products ship directly from our vendor partners. These will display accurate estimated ship dates on their product pages. Any concerns or delays with these items should be directed to support@buildasoil.com.




Freight Shipments

Freight shipping involves delivery of pallets via box trucks or semi-trailers.
By default, all freight is assumed to require liftgate service. If you do not need a liftgate, please notify us prior to shipment.

Inspect your freight order before signing the delivery receipt.
Count the number of packages and check for visible or concealed damage. Do not sign unless everything is accounted for and undamaged. Signing a receipt waives the right to claim missing or damaged freight unless noted at delivery.




Order Tracking

Tracking information will be emailed to the address on file once the order ships.
If you do not see the tracking email, visit https://buildasoil.aftership.com/ to locate your order using your email and order number. You may also contact support@buildasoil.com for assistance.




BuildASoil Shipping Protection

You can add BuildASoil Shipping Protection at checkout. This low-cost option insures your order against loss, theft, and damage.
If something goes wrong during transit, your replacement order will be fast-tracked through our claims system.

Even when protection is purchased, we request that you submit photos, videos, and any supporting evidence of the issue. This allows us to file formal claims with carriers and ensure the long-term success of our shipping network.




Claims Policy

All claims must be made via support@buildasoil.com.
 We do not accept claim submissions via phone.

To process your claim, we require the following:

  • A clear description of the issue

  • Photos or videos documenting damage, missing items, or incorrect products

  • Images of packaging, shipping labels, and box condition if relevant

Do not discard any shipping materials or products involved in the claim—carriers may require inspection.

Claim Deadlines:

  • Visible or Concealed Damage / Missing Items: Report within 5 business days of delivery

  • Incorrect Products: Report within 30 days of delivery

  • Lost Packages or Incorrect Delivery: Report within 30 days of shipment date




Carrier Responsibility Disclaimer

Once an order has left our facility, BuildASoil is not responsible for carrier-related issues such as delays, misroutes, or mishandled deliveries.
We will support claims to the best of our ability, but the final resolution is subject to carrier approval.

Additionally, we maintain zero tolerance for mistreatment of delivery drivers, delivery dispatchers, or anyone with the shipping/freight carrier. Any reported conflict resulting in a failed delivery will result in the order being refunded, minus the cost of shipping and a 15% restocking fee.

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 4.8 out of 5
Based on 39 reviews
  • 5 Stars
    35 Reviews
  • 4 Stars
    3 Reviews
  • 3 Stars
    0 Reviews
  • 2 Stars
    1 Review
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    0 Reviews
97% 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
39 Reviews
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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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 Colin L., from United States
Verified Buyer
I recommend this product
Experience With Organics
0-1 Years
Rated 5 out of 5
Review posted

Pretty cool to have in pocket

Fits in pocket and not expensive. But will throw you off 100 but lower is always safer!

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Quality
Rated 3 out of 5
Value
Rated 3 out of 5
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Rated 3 out of 5
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Reviewed by Eric, from United States
Verified Buyer
I recommend this product
Experience With Organics
1-4 Years
Rated 5 out of 5
Review posted

Must have

After soil, tent and a light, this might be the best $40 I’ve spent on grow equipment.

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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 Jared S., from United States
Verified Buyer
I recommend this product
Experience With Organics
0-1 Years
Rated 5 out of 5
Review posted

Works as advertised.

Item seems to work as advertised. All of my ppfd numbers are consistent and way more accurate than trying to use the app alone. I use the Photone app.

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

5 Stars

I mean. It's cheaper than a legit par meter.

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