 |
|
|
|
Dimensions & Weight
Case Material
Case Features
Case Access Type
Switch Type
Reflector Type
Lens Type
Bulb Type
Circuit
Beam Type
Beam Characteristics
Overall Output
Nominal Color
Battery / Power Type
Battery Life (advertised)
Environmental Protection
Accessories
Special Items of Note
Warranty
Retail Availability & Cost |
.......
.......
.......
.......
.......
.......
.......
.......
.......
.......
.......
.......
.......
.......
.......
.......
.......
.......
.......
....... |
Diameter - Head1"
/ Body .8", L 3.7", Weight 2 oz.with battery
CNC Machined aerospace-grade aluminum, HA Type II anodized throughout
Machined grip and head
Unscrew tail-section for battery change
Tailcap- Click On/Off, Momentary Off available
Shiny smooth reflector
Polycarbonate
High Dome (Lambertian) 1Watt White Luxeon Star LED
Unregulated
Wide with tight hotspot
Bright center and 'stepped' corona . No voids or anomalies
35.0 Lumens (Nominal)
Varies / 5400ºK Nominal
3V Cell Type. 1 x CR123A- included
45 minutes unregulated to 50% of output, gradually diminishing
thereafter
'O'-ring seals
N/A
Retail 'Blister' packaging
1 Year Limited (Excludes batteries)
TBA $24.99 http://www.dorcy.com/41-4262.htm |
|
Form Factor & Build
|
1-
Modern 'Machine Age' interpretation of the classic
hand-held flashlight form. Geometry is a radially symmetrical
( round cross-section / featuring some geometric elements
including: ribs around the body for traction and faceting
around the head to prevent rolling on a flat surface.
2- The head of light is wider than the body
& tail-piece which are approximately the same diameter.
3- The flashlight feels significantly lighter
than many flashlights of comparable output. Solid construction
and 'just enough' heft contribute to giving the Dorcy1X123
excellent balance in the hand. Ideal for individuals with
small to medium sized hands, it's quite holdable by users
with large or extra-large hands as well.
4- Lacking any aggressive, this light slips
easily into pockets and purses. Lacking a clip or any sharp
eegs at all there's nothing to snag on the Dorcy1X123
5- The aluminum wall thickness of the battery
tube is 1.5 mm.
6- All sections fit together extremely well
with no rough threading action.
7- Titanium colored Anodizing Type II (shinny)
on the outside and on the inside of the tailcap and body section
provide protection against corrosion.
8- This is a very rugged little pocket light
with a look & feel of a quality personal tool. It's suitable
for any application where a bright light is needed for short
periods in a pocketable product. |
| Ergonomics
& Mount Options |
1-
Ambidextrous. Center of balance slightly in front of the midpoint
on the body section.
2- The ift of the Dorcy1X123
in one's hand is generic . It neither conforms nor does it
interfere with holdability |
| Affordances |
1-
Stowage- No stowage option is offered and there is no native
attachment point for lanyards or keyrings.
|
| Human
Factors & Usability |
1-The Dorcy1X123
design promotes intuitive grip focus on the region between
the tailcap and the head.
2- We did not perform a 'pull' test but we
judged the heavily ribbed body section to be an effective
mitigator against hand slippage.
3- The lightness, brightness and sturdiness
of this light make it suitable for critical inspection, law
enforcement, tool box, briefcase,purse and other everyday
locations
4-The toggling push for click On/Off activation
procedure is an intuitive and fast implementation of the switch.
5- Due to an infinitesimal protrusion of
the rubber switch button- the light may be stood on its tail
for ceiling bounce mode but with a slight tilt. NOTE-
The shroud surrounding the switch button is no more than .25
mm short of being adequate for enabling this light to stand
perfectly upright on it's tail.
6-The integrated emitter assembly is fully
user accessible as is the tail section. |
| Beam
Quality & Characteristics |
1- The shinny reflector of the Dorcy1X123
creates a bright circular beam that is a wide flood of light
with a wide circular hotspot in its center . The beam splits
into distinct and 3 concentric regions that emanate from the
center. 2-
The wide and round-shaped beam is excellent for general searching
and is bright and wide enough to create a floodlit effect in
a room or to shed a wide swath of light on an exterior scene.
3-The Dorcy1X123 creates a
subject illumination in a category that we've codified as an
extremely Context Inclusive Illumination Window (CIIW)
as compared with a Context Exclusive Illumination Window
(CEIW) (*5)
4- Due to it's Neutral LED bin lot, the
Dorcy1X123 was ac capable in the outdoors as it is
inside- without the slightest hint of blue or cyan in its beam
to negatively affect vision and object perception.
5- Due to its relatively smooth beam, the Dorcy1X123
did not exhibit object 'burn-out' at medium ranges.
6-To test the throw of the Dorcy1X123,
we conducted a Maximum Distance for Object Identification
or MDOI (*2) trial and managed to
confidently differentiate our test subject (a
Black 33 Gallon (124Litre) Trash Bag) from
its immediate surroundings, from as far away as 120
feet with the subject area in near total darkness and
the evaluators and flashlight in a moderate level of street
sodium vapor ambient lighting (RH=70% at 75ºf). This test simulated
a person searching for an object of known size -a person for
example- but located in an unknown or difficult to spot container
-a black trash bag, for example. From 120 feet away,
the Dorcy1X123 positively lit up the vegetation surrounding
our subject enough to clearly distinguish it from the Black
33 Gallon Trash Bag, that lay on the ground.The estimated
contrast ratio was 2:1 |
| Light
Quality |
The
color chart tests photographed with a digital camera set for
Daylight White Balance and exposure set- to properly expose
the gray areas of the chart to 50% or Zone V- 'Mid-tone Gray',
revealed that the Dorcy1X123's color is consistently
around 4,500ºK from center to corona. Comparing the Dorcy1X123
chart photograph with a flash (White Balance set to 'Flash')
exposure of the same chart reveals no color shift whatsoever.
This makes it ideal for situations demanding the highest fidelity
of color differentiation. |
| Conclusions |
1- The Dorcy1X123 is a
medium/heavy duty rough use flashlight that's ideal for general
flashlight tasks in a number of everyday and several demanding
applications. Due to its robust construction and waterproofness-
combined with bright beam, we judge it to be an excellent
choice for any flashlight tasks that demand reliability and
a relatively long-life bulb.
2- Longer lived than Xenon bulbs of comparable
brightness- the 1 Watt Luxeon LED that the Dorcy1X123
uses has a substantially longer life (100,000 Hrs) than a
comparable flashlight with a 3 Watt Luxeon LED (10,000hrs)
- making it around 15% less bright than a comparable 3W flashlight
but in exchange for 10 times the life span . The 1W Luxeon
head is a better short and long term value.
3-Value. With new flashlights in the Luxeon
market space -being released weekly- it's hard to define a
relative value when comparing non-comparables. The Dorcy1X123
is an excellent value in a class with one at a similar price
point. At this point in time, the Dorcy1X123 rates
4.5 stars out of a possible 5 stars.
Our gripes were... A) Cannot stand up perfectly in Ceiling-bounce
mode B) Lacks a keyring or lanyard attachment point D) No
momentary On function
4.5 Stars-
Highly Recommended-Value
Leader
|
| Pictures |






LEFT, Nuwai Quantum III (Titanium ) | RIGHT, Dorcy 1W, 1X
CR123

LEFT, Dorcy 1W, 1X CR123 | RIGHT, Nuwai Quantum III (Titanium
)

LEFT, Dorcy 1W, 1X CR123 | RIGHT, Nuwai Quantum III (Titanium
) / Note: Amber filter on QIII

LEFT, Dorcy 1W, 1X CR123 | RIGHT, Nuwai Quantum III (Titanium
)

ABOVE, Detail of tailpiece showing activation button profile
|
| |
Footnotes:
(*1) Medium Men's glove size- Also, a Standardized
Flashlight Hand Size Metric (SFHSM)
 |
|
Small
A-B = 4.5" or Shorter |
| |
Medium
A-B = 4.5"-5" |
| |
Large
A-B = 5"-6" |
| |
X-Large
A-B = 6" and Longer |
(*2) Maximum Distance for Object
Identification (MDOI). The maximum distance that
a person without the aid of magnification-can with normal
or corrected vision, under a given ambient level of light,
identify an object of known size, and clearly distinguish
it from its surroundings. We have tentatively identified the
following scenarios for such measures:
- A single average sized person/body identification scenario
- Urban (city, inside buildings, dark alley, lit streets)
- Rural (countryside,farm residential backyard)
- Environmental (dessert, woods, wetlands, over water)
- Natural & manmade disaster (fire, flood/mudslide,earthquake,
hurricane /tornado,bombing scene, collapsed structure
etc)
- Small Inanimate Object (smaller than a shoe-box)
- Medium Inanimate Object (Black Plastic 33 Gallon (124Litre)
Garbage Bag stuffed with a big sleeping bag)
(*5) Context Inclusive Illumination
Window (CIIW) as compared with a Context
Exclusive Illumination Window (CEIW)
.
- CIIW describes a subject illumination
paradigm wherein the illumination target is the focus of
the beam's brightest disc or 'Hotspot' and peripheral objects
to the target are more dimly illuminated in a larger disc
that surrounds the focus or hotspot. This outer region is
also referred to as a corona or penumbra.
- CEIW describes a subject illumination
paradigm wherein the illumination target is the focus of
the beam's brightest disc or 'Hotspot' and peripheral objects
to the target are not sufficiently illuminated
to be easily discernable at the periphery
of subject beam's focus or hotspot.
©
2004 - Imägo Metrics - All Rights Reserved
Original standards designations (including acronyms) depicted
in this, as well as all of our evaluations are the exclusive
intellectual property of Imägo Metrics LLC and subsidiaries.
Reproduction without prior written permission is strictly
prohibited.
All
Photographs © 2004 - Imago Media |
|
|
|
| |
Legal
© Copyright 2003 Imägo Metrics LLC - All Rights
Reserved |
|
|