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LRI Proton Pro

provided for review by
lri_logo
  Introduction:
LRI Proton Pro is a single AA battery based, Microcontroller (µC) based, high quality dual LED flashlight. Proton Pro is next incarnation of original LRI Proton. Major change involves use of reflector and Cree LED in place of 6 LED array. LRI Proton Pro has primary LED as high efficiency Cree XLamp 7090 XR-E LED and secondary ultra bright 3mm red LED. The user interface (UI) for Proton Pro is same as that of original Proton. Basically Proton's UI is advanced form of Freedom UI. Freedom UI consist of variable brightness setting, 3 signaling modes and automatic SOS mode. For Proton Pro Freedom UI applies in both white & red LED's and both LED's can be individually operated by single click switch. Body of Proton Pro is built of aircraft grade Aluminium alloy. Outer side of body is in black color with anodized type III hard coat coating. Advantage of hard anodizing is that it protects the light from wear and tear during harsh conditions. Proton Pro comes with detachable strong stainless steel pocket clip. Side switch has rubber boot. Inside Proton Pro, the battery contacts are gold plated. There are O-Ring seals at different places. O-Ring seals prevent dust and water entering the light making it reliable under wet and dusty conditions. The lens of Proton Pro is of hardened glass type. Bezel has a glow in the dark O-Ring seal. The main feature of Proton pro is availability of dual beams. White beam is for general illumination where as the red beam can be utilized for night vision and map reading. LRI Proton Pro is designed to perform well in extreme weather conditions, rain and sub-zero temperatures. Overall build quality of Proton Pro is good. Packaging includes a durable belt pouch, means of attaching key chain and a filler piece for pocket clip.

Light Features:
  • Dual Beam, white and red illumination
  • Cree XLamp 7090 XR-E LED
  • Ultra bright 3mm red
  • Microcontroller (µC) based drive circuit
  • Advanced Freedom UI for both white and red LED's
  • Side click switch for easy one hand operation
  • Durable stainless steel detachable pocket clip
Light Operation & Output:
Light Operation: Simple, click switch. For white beam, click once to switch on, click again to switch off. For red beam, press and hold the click switch, release when desired brightness level is achieved. To switch off red beam, simply click once again. Advanced modes can be attained by holding the switch past the brightness setting. Let's have a detailed look at the freedom user interface mode diagram for LRI Proton Pro Light.

LRI Proton White LED Operation:
user interface mode diagram for LRI Proton Pro Note: Proton Pro is shipped in demonstration mode. You will have to take your Proton Pro out of Demonstration Mode by pressing and holding the button until the light turns itself off. This will take about 20 seconds.

Freedom UI: Single Button Operation: White LED

1. Simple ON-OFF: Click the button to switch ON; click the button again to turn OFF.

2. Control Brightness: from ON position
         If the light is already in ON state (Max brightness) - Press and hold the button, the light level starts ramping down, release the button when desired dim level is attained. Light will blink at lowest light level.

3. For Safety Beacons: Press and hold past "blink" state. the light will start cycling through different modes. You can choose Slow Beacon, Medium Beacon, Fast Flash, or S.O.S. whenever the desired Beacon mode has arrived, simply release the button. The 4 safety Beacon modes are.
          Slow Beacon - Flashes once every 5 to 6 seconds 0.25 Hz.
          Medium Beacon - Has an on-off-on beat in one second intervals - 2 Hz.
          Fast Beacon - A very rapid strobe - 10 Hz.
          S.O.S. - Continually flashes the International Morse Code for distress.

4. Signal/Morse Mode: To enter the Morse Mode, click the button in quick succession rapidly until light starts blinking along with each click. It takes approximately about 6 clicks. You have now entered in Morse Code / Signaling mode. To exit Signal/Morse Code, simply press the button until light turns itself OFF.

The chart on left side here displays just the same thing visually to help better understanding of Freedom UI.


LRI Proton Red LED Operation:
user interface mode diagram for LRI Proton Pro Freedom UI: Single Button Operation: Red LED

1. Switch ON-OFF & Control Brightness: From OFF position press and hold the button to switch ON; The light will start ramping up. Release the button when desired light level has been achieved. If you continue holding button light will blink at max light level. Click the button again to turn OFF.

2. For Safety Beacons: Press and hold past "blink" state. the light will start cycling through different modes. You can choose Slow Beacon, Medium Beacon, Fast Flash, or S.O.S. whenever the desired Beacon mode has arrived, simply release the button. The 4 safety Beacon modes are.
          Slow Beacon - Flashes once every 5 to 6 seconds 0.25 Hz.
          Medium Beacon - Has an on-off-on beat in one second intervals - 2 Hz.
          Fast Beacon - A very rapid strobe - 10 Hz.
          S.O.S. - Continually flashes the International Morse Code for distress.

The chart on left side here displays just the same thing visually to help better understanding of Freedom UI.



Below is the chart showing total output levels for various batteries.

LRI Proton Pro
Level NiMH AA Alkaline AA Lithium AA
Max 540 690 732
Min 3 3 3
Light Info:
General Info
    ID
38
    Light Model Proton Pro
    Manufacturer Laughing Rabbit Inc
    Review Page & Image
  
 Proton Pro
Proton Pro
    Country  United States
    Review Date 2008-04-14
    Review Update 2008-04-20
Light Vitals
    Length 98 mm
    Width / Bezel Diameter 20 mm
    Width / Tube Diameter 16 mm
    Height (if applicable)  mm
    Weight (without battery) 29 gm
Light Source
    LED Format Power LED
    Number of LEDs 1
    LED Name Cree XR - E
    LED Power 3  Watts
Light Management
    Lens Material Glass
    Lens Coating (if any) AR Coated
    Lens Transperency (typical) 90
    Lumen Management Reflector
    Material Plastic
    Beam Type Mostly Throw with good side spill
Power Management
    Converter Type Step Up
    Properties Semi Regulated, Micro Controller (uC)
    Features Advanced User Interface
Batteries Supported, Output & Runtime
    Battery Size
    Chemistry
    Nominal Voltage
    # Used
    Total Output
    Runtime to 75%
    Runtime to 50%
    Runtime to 25%
AAAAAA
NiMH  Alk  LiFeS2  
1.21.61.7
111
540690732
61130
74370
80470
Switch Options
    Switch Type
    Switch Properties
Click
Side
Body Material Options
    Material
    Properties
    Color
Aluminium
Type III Hard Anodized
Black
Light Rating
    Looks
70 70
    Build Quality
75 75
    Runtime
60 60
    Output
70 70
    Features
85 85
    Usability
95 95
    Bang for buck
60 60
    Overall Rating
 73.571
In-Depth Review & Pictures:
Packaging: LRI Proton Pro comes beautifully packaged card board box. Inside the main card board box, there is blister type second packaging that holds Proton Pro and accessories. The main card board box has transparent central window reveling the LRI Proton Pro flashlight. The front side of box has mention of major features of Proton Pro, it also has has access to switch allowing users to test the light in demonstration mode. With light in demonstration mode, you can switch ON or OFF, you can also change the brightness setting. Proton Pro will turn itself OFF in about 30 seconds. On the back side the box shows quick UI operation guide; Proton Pro drawings from front, side and top angles. At the bottom of the box there are light specifications, information about quality, toughness and contact address.


Side view of the LRI Proton Pro package. On both the sides detailed features for Proton Pro are listed.

Inside you will find an instruction manual card, durable belt pouch and a pocket clip filler piece.



Size Comparison: Pictured below From L to R: AA Battery, Zebralight H50 Q5, LRI Proton Pro and Fenix L1D. Proton Pro is about same length as Fenix L1D but slimmer overall.


Another comparison From L to R: AA Battery, LRI Proton Pro, Original LRI Proton and AA Battery. As you can see the Proton Pro is slightly more in length as compared with original Proton. This is mainly because addition of reflector, glass lens and Cree-XR E LED.


Bezel Comparison: On the left you can see Dual LED LRI Proton Pro where as on right is the Fenix L1D.


Here is another comparison between LRI Proton Pro on left and original LRI Proton on right. The distinctive difference between LRI Proton Pro and original Proton is in the LED's and of course the use of reflector in Proton Pro. The beam pattern for original Proton was pure flood where as for Proton Pro the beam pattern is more throw with good side spill.


Bezel: Let's have a closer look at the bezel of LRI Proton Pro. Cree XR-E LED is aligned perfectly in center. The reflector in Proton Pro is of Cyrillic. Reflectors appearance is smooth. It has a circular opening allowing 3 mm red LED. The beam pattern is mostly throw with good side spill for both the LED's.


Closeup of LED's in Proton Pro.


Body: LRI Proton Pro is built from aircraft grade aluminium. The construction quality is nice. Let pictures do the rest of the talking for now.












Special: LRI Proton Pro glow in the dark pictures
Glow in the dark bezel O-Ring is brilliant for first few seconds. The glow decreases over time. It will last up to 8 Hours. Glow Ring helps to easily find Proton Pro in complete darkness.


Here's another picture of LRI Proton Pro bezel with glowing O-Ring.

Beam Shots:
Here is the Beam shot Matrix showing LRI Proton Original and Proton Pro on Max light level with Alkaline battery. All beam shots are taken at f/8 aperture with varying shutter speed.
Proton Original Proton Pro Max
1/250
1/100
1/50
1/25
1/10

Beam Shots LRI Proton Pro Red Beam: Here is the Beam shot Matrix comparing LRI Proton Original and Proton Pro with Red Beam Max light level on Alkaline battery. All beam shots are taken at f/8 aperture with varying shutter speed.
Proton Original Proton Pro Max
1/25
1/10
1/5
1/2.5
1

Extreme Closeup Pictures: LRI Proton Pro
Here are a few extreme closeup shots. Please note that there is a lot of dust that is attached. This is because the light was heavily used (for about two months) prior to taking the closeup's. Usually, the extreme closeup pictures are taken first and then light is used for review analysis. Overall workmanship of LRI Proton Pro is good, body built is strong.

Bezel of Proton Pro


LRI Proton Pro Side Click Switch, rubber cap has very good grip.


LRI Proton Pro battery tube.


LRI Proton Pro laser engraving.


Tail cap. See the scratches, that's due to very harsh usage. More on this further down in super extreme closeup's.


Super Extreme closeup LRI Proton Pro Bezel


LRI Proton Pro battery tube, notice the CNC machining fine marks.


LRI Proton Pro Laser Engraving.


LRI Proton Pro tail cap. you might have noticed there are some scratches; these scratches are result of using in extreme conditions (desert), but the metal is intact, thanks to good anodizing. That's the level of protection HA III offers.


Runtime:
Alkaline AA: The runtime for LRI Proton Pro with Alkaline AA battery on MAX light output is about 37 Minutes till 50%, Runtime for LRI Proton Pro with less output levels will be considerably more.

NiMH AA: The runtime for LRI Proton Pro with NiMH AA battery on MAX light output is about 1 Hour and 14 Minutes till 50%, Runtime for LRI Proton Pro with less output levels will be considerably more.




Alkaline AA Myth Buster: As you can see from the above runtime chart, Alkaline battery does not perform well on continuous high current discharge. But at the same time, if given time to rest between high current discharges, it is also true that the Alkaline battery has property to recover itself. To prove this, each day LRI Proton Pro was operated for 10 Minutes for 7 days (total of 70 Minutes) and corresponding light output was logged. Looking at the runtime test results below, it is clear that Alkaline battery would give far more runtime this way than a single continuous usage. Notice the peaks in light output, that actually marks the beginning of each day. On 8th day, the battery has not given up completely we let it rundown over 20 Minutes and yet it has not fully depleted.



What this means that during practical purposes, especially when you use the light for say 3 - 5 Minutes a day, the light will last for reasonably long duration. This fact is not just true for LRI Proton pro but for for any light that has high current draw (above 1 Amp). For lights that draw less current (less than 200 mA.. example driving a 5 mm LED @ 30 - 35 mA...) there wont be much of a difference weather the light is used continuously or used in smaller increments on day to day basis.

Alkaline AA Myth Buster Final Test: A final test for the same battery was performed exactly 20 days after the last test. The purpose of this test was to determine, just in case if you leave a highly depleted battery in the flashlight, how it well performs. *Warning* this does not mean, you should always keep a depleted battery in the flashlight. The Alkaline battery may leak and damage the flashlight. The purpose of this experiment is just to prove the runtime with intermittent operation and to determine how battery performs, just in case if you leave a highly depleted battery. Here are the results.


The last peak and decay of light output shows that light was able run for another 10 Minutes and then it entered moon mode. By this time, the Red LED was already switched on indicating the depleted battery.

Buy LRI Proton Pro Flashlight at www.laughingrabbitinc.com
 
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