Samples, Drawings, and Training FAQs:
Q: Are outline drawings and data available
for Navitar components?
Outline drawings, in pdf format, may be downloaded from
our website. If other formats are needed, contact your regional sales
rep for assistance.
Q: Are
solid models of Navitar systems available?
Solid models are readily available in .step format. Other
formats may be requested but there may be a few days of lead-time for
other file formats. Contact your regional sales rep for solid models.
Q: Does
Navitar provide lens samples?
Yes, Navitar will “lend” product samples to
customers for a 30-day evaluation period. A customer can then decide
to purchase or return the sample after the evaluation. Navitar will
pay for the initial shipping charges. Duty and taxes on export shipments
are paid by the importing company. If the product is returned, the customer
is responsible for return-shipping charges.
Q: How
do I get samples for evaluation?
Place a regular purchase order (PO) for the samples that
includes a note: "These items are being ordered for a 30-day evaluation
period and may be returned within this time at no charge." If the
customer decides to keep the items, they can simply pay the invoice
that travels with the package.
Q: Can
customers send samples to Navitar and get back images?
Yes, contact your local Navitar sales representative for
details regarding your specific need. Click here
to find your local sales representative.
Q: Do
you offer product training sessions?
Currently, our product training sessions are conducted
individually at the customer site. Contact your local sales rep to arrange
for training on any of our products.
Q: Do
you provide Dealer training?
Currently, our product training sessions are conducted
individually at the dealer site. Contact your local sales rep to arrange
for training on any of our products
Q: Where
can I find training on your lenses? Is there a CD/Video available on your
products?
At this time we do not have electronic training support
for our products.
Delivery and Payment FAQs:
Q: What
is the standard delivery/lead time for Navitar products?
Standard products are normally shipped from our factory
within two weeks of the order date. Custom order delivery times will
be quoted on an order-by-order basis.
Q: What
volume discounts or special pricing do you offer?
Contact your dealer or Navitar sales representative for
applicable discounts.
Q: What
payment options are available? Can I pay by credit card?
We accept Visa, Mastercard, and American Express credit
cards. Payments can also be made by TT in advance. Credit terms are
available to those customers that complete our credit application. Contact
your Navitar Sales representative for a copy of this application.
Q:
Do you charge a handling fee when you ship products?
Yes, we charge a nominal handling fee for all shipments.
Repairs, Returns, and Warranty
FAQs:
Q:
Can we return the product if it doesn't work with our application?
Most returns have a 20% restocking fee. We encourage you
to discuss your application with a Navitar sales rep prior to placing
your order.
Q:
What do we do when we need to have a lens repaired? Can a dealer
repair it?
We urge our dealers to return all products to our factory
for any repairs. Unauthorized disassembly will result in voiding the
product warranty. Many product repairs require specialized knowledge
and tools/equipment.
Q:
Product warranty?
All Navitar optical products come with a conditional
lifetime warranty. These products are guaranteed to perform in your
most demanding applications. Navitar also provides lifetime technical
support for our optical products.
How to Order from Navitar FAQs:
Q:
Who do I place my order with?
Orders should be placed with your local authorized Navitar
dealer.
Q:
How do I find an authorized Navitar dealer?
To locate a Navitar dealer, please click here
and select your specific location:
Q: Can
I buy directly from Navitar?
Navitar has a world wide dealer network to assist
you in specifying and ordering your products.
Navitar Company FAQs:
Q:
What is Navitar?
Navitar is a leading manufacturer of optical solutions
for the machine vision and audio visual markets.
Q:
Who are your customers?
Navitar supplies leading companies in a wide variety of
industries. Our customers can be found in the fields of Semiconductor,
Bio-Medical, Flat Panel Display, Simulation, Electronic Testing, Machine
Vision and Metrology.
Q: Where
is Navitar located?
A: 200 Commerce Drive, Rochester,
New York, 14623 USA. Click here
for directions.
Navitar Optics FAQs:
Q:
Who makes Navitar lenses? Where?
We design and assemble all Navitar lenses at the Navitar
factory, located in Rochester, New York, USA.
Q:
Why should I use a lens attachment to increase the magnification
if it reduces the working distance? Why not change the lens adapter instead?
Resolution is determined by the numerical aperture (N.A.)
at the object side of the lens system. Changing the lens adapter will
increase the magnification but have no effect on the resolution. Increasing
the resolution can only be accomplished by adding a lens attachment.
Q:
How do I choose the correct components to get a specific magnification
at a specific working distance.
The best way to choose the correct parts is to use the
matrix charts on our website. First, choose the row where the lens attachment
provides the desired working distance. Next, select the column with
the desired magnification or field of view. Click
here to view a sample matrix chart.
Q:
How do I mount a lens?
We offer mounting brackets that clamp on the adapter barrel.
Motorized lenses have optional flat plates for mounting. We can also
create custom mounting fixtures as required.
Q:
Can you shorten the optics of a lens?
Yes, we offer a variety of adapter tubes of different
lengths. These can be used to change the overall object to image distance.
Navitar also provides 90 degree bends in the object and image spaces
using both mirrors and Non-inverting Right Angle (NIRA) prisms.
Q:
Why can’t I get high magnification and good depth of field?
To get adequate resolution, most high magnification systems
also have a high numeric aperture (N.A.). Depth of field is inversely
proportional to N.A. If the system has an iris, you may increase the
depth of field by closing down the iris, but this will result in less
resolution.
Q:
What is the resolution of your lens system?
Resolution is a function of the lens system’s numerical
aperture (N.A.). The formula to calculate resolution in line pairs per
mm is 3000 x N.A. View other useful formulas.
Q:
How do I determine the focal length I require?
Object size and camera format determine magnification.
Magnification and working distance determine lens type. Please refer
to the lens calculators for fixed focal lengths and the respective charts
for zoom systems and Precise Eye systems.
Q:
Where are your lenses used?
Navitar supplies the leading companies in a wide variety
of industries. Our customers can be found in the fields of Semiconductor,
Bio-Medical, Flat Panel Display, Simulation, Electronic Testing, Machine
Vision and Metrology.
Q:
What is the difference between
depth of field and depth of focus?
Depth of field is the viewable thickness envelope at the
object plane. Depth of focus is the image thickness envelope at the
image plane.
Q: Are
your optics A/R (anti-reflective) coated?
Yes.
Q:
How can I get more depth of
field?
Use a slower lens (higher F/#, lower N.A.). Or,
if available, stop down the system with an iris, but be aware that resolution
will diminish.
Telecentric FAQs:
Q:
Do you sell telecentric lenses?
Yes, we offer an entire line of telecentric lenses to
meet your needs. Click
here to view our available telecentric lenses.
Q:
What is a telecentric lens?
One of the most important benefits of a telecentric lens
is that image magnification does not change as object distance varies.
A telecentric lens views and displays the entire object from the same
prospective angle, therefore, three-dimensional features will not exhibit
the perspective distortion and image position errors present when using
a standard lens. Objects inside deep holes are visible throughout the
field, undistorted, therefore, telecentric lenses are extremely useful
for inspecting three-dimensional objects or scenes where image size
and shape accuracy are critical.
Q:
Are your zoom lenses telecentric?
The 12X Telecentric Zoom system allows users to reach
a true telecentric condition to within less than 0.3° while maintaining
constant perspective and magnification. This means that even if the
object is slightly out of focus, the size of the image will not change.
The 12X Telecentric Zoom provides field coverage from 50 mm down to
4 mm and the coaxial illumination allows clear viewing, even when working
with mirror-like surfaces. Click
here for details about our 12X Telecentric Zoom System.
Q: When
would I need a telecentric lens?
If you are concerned about a shift in magnification with
object distance. Or, if perspective error is unacceptable over a given
field of view.
Q: Will
using a telecentric lens improve my depth of field?
No, telecentricity will keep the magnification constant
through the depth of field. However the focus will soften as with any
lens. The depth of field will still be determined by the system's F/#.
Easy Reader Auto Focus FAQs:
Q:
How fast does the auto focus work in the Easy Reader?
Approximately 1.5 seconds if the starting point is at
the limit of the auto focus range. Less if the starting point is closer.
Q:
Can I use the Easy Reader to make height measurements?
Yes, the Easy Reader provides an output reading of the
focus position. This reading can be calibrated by the user. The user
will need to develop software to interpret this reading.
Q:
My object has multiple heights. I want to focus on the highest/lowest
surface. Can the Easy Reader do this?
Yes, always start the auto focus routine on the
side of the surface of interest that is away from other surfaces. Then
run a "one-push" focus so that the camera will focus on the
first surface and stop there.
CCTV / Low Magnification Video
Lens FAQs:
Q:
I'm using a CCTV lens in my machine
vision application. How can I improve the image quality without moving
up to an expensive lens?
Use a CCTV lens designed for a larger format camera. Dyotar
lenses are optimized for larger magnifications and larger sensor formats.
Q:
Can you recommend a lens if I know my
FOV, working distance, and camera?
A: Yes. Contact
your local Navitar sales representative, who will be happy to determine
the correct lens for your application. You can also use the following
formula to determine the required focal length (FL) for your application:
FL= CCD x WD/FOV. Click here for other useful
CCTV lens formulas.
Q:
Do your CCTV lenses have set screws?
A: A few custom
versions do have set screws. Contact your local Navitar sales representative
for additional information.
Q:
What is “C-Mount” ?
1” – 32T mounting thread with a 0.690”
(17.53mm) flange distance.
Q:
How do I put a filter on the front of
my CCTV lens?
Most CCTV lenses come with female threads that accept
standard Tiffen (or equal) filters (http://www.tiffen.com/).
It may be necessary to purchase a “step-ring” to adapt to
available filter sizes.
Camera FAQs:
Q:
Do you sell cameras?
Not at this time.
Q:
If not, can you recommend a camera?
We recommend that you contact a Navitar dealer or work
with a reputable camera manufacturer to guide you through the camera
selection process. Contact a Navitar
dealer.
Q:
Can I use a C-mount lens on a CS-mount
camera?
Yes, with the addition of a 5mm spacer. This compensates
for the smaller flange distance designed into a CS-mount camera.
Q:
Do you have lenses for line scan cameras?
We do not currently offer lenses for line scan cameras,
but we may in the future.
Vision Illumination / Lighting
FAQs:
Q:
Do you sell lighting?
Yes, we offer a variety of lighting options for various
applications. Click
here for details about available lighting options.
Q:
How bright is your BrightLight LED system?
Is it as bright as a fiber optic bundle?
The BrightLight II, at full intensity, is roughly one-half
the output of a 150 watt Halogen fiber illuminator at full intensity.
Q:
Can I use my own driver for the BrightLight
illuminators?
Yes, if you have the skills to apply “pulse width
modulation.” LED's are current-driven devices. They are easily
damaged by improper driving. In addition typical current drive circuits
will cause the color of the LED to vary with intensity. This can cause
unexpected complications in many applications. Navitar's driver utilizes
a circuit architecture that maintains consistent performance when changing
intensity.
Q:
What is the voltage of your power supply
for the BrightLight I, II, Ring Light?
A: BrightLight
I = 9 VDC, BrightLight II = 12 VDC, and Ring Light = 5 VDC.
Q:
Do your fiber bundles fit power supplies
from different manufacturers?
A: Navitar
fiber bundles typically fit into power supplies with 0.5” or 0.72”
diameter fiber receptacles. Custom couplers can be designed to fit other
power supplies.
Q:
What are the lifetimes for the Navitar
LED systems?
A: All of the
BrightLight I’s are specified at 100K hours. The higher power
whites do not last as long. The dual power 2.6/4 (and yes, our driver
has two modes of customer selectable operation) is specified at 50K/20K
depending on mode. The 4.8 watt white is still limited to 500-1000 hours.
The color 4.8 watts are good for 100K. Specifications supplied by Luxeon.
6X & 12X High Magnification
Zoom / Video Microscope System FAQs
Q:
Can a crosshair be used with Navitar
systems?
Yes, Navitar offers a reticle projector (1-60068) that
may be used with either the Zoom 6000 or 12X Zoom systems. The reticle
must be 21mm in diameter and is sold separately.
Q:
How is the reticle projector configured
with the zoom system?
The information on the reticle (crosshair, micrometer,
custom graphic) must be contained to the size of the sensor. For example,
if a ½” camera sensor is used, the reticle must have the
information in a 4.8x6.4mm area to be seen on the monitor.
Q:
Why isn't my zoom boresighted (the image
moves laterally during zooming)?
A: Due to tolerances
in lenses and cameras, it is not possible to bolt components together
and have perfect alignment. The 1-6010 C-mount coupler has clearance
that permits positioning the camera over the optical zoom center. Remember
that, with a 12X zoom system, any centration error at low magnification
will be 12 times larger at high magnification. Here is the procedure
for adjusting boresighting:
All Navitar zoom systems are designed to zoom on center.
Adjust the position of your CCD with respect to the optical axis of
the lens:
- Choose a target that has many small features.
- Mark the center point of your monitor.
- Change the zoom from low to high magnification many times and locate
a reference that does not shift laterally as you zoom.
- Adjust to lowest magnification setting.
- Adjust the three setscrews on the C-mount coupler to bring that
reference point to the center of your monitor. (Use three hex wrenches
at the same time to make this adjustment. 8-32 x 0.125)
- The system should now stay on center when the magnification is
adjusted.
The lens must first be adjusted so that it is parfocal.
(See Question & Answer Below)
Q:
Do your video microscope systems stay
in focus throughout the zoom range?
A: All Navitar
zoom systems are designed to stay in focus when adjusted from one magnification
to another. The procedure below describes how to adjust the components.
- Position fine focus mechanism at the middle point of travel. (If
the lens has fine focus.)
- Adjust the magnification to its highest setting.
- Adjust focus by either moving entire optical system in its z-axis
or using the fine focus provided on the lens. Adjust until you have
a sharp image.
- Adjust the magnification to its lowest setting. At this point do
not re-adjust z-axis height or the fine focus on the lens.
- Adjust the back focus of the lens. This is done by adjusting the
glass in the adapter tube. Most adapter tubes with glass have a locking
screw and an adjustment screw. Release the locking screw and then
use the adjustment screw to bring the image into focus. If using adapters
without glass they can be adjusted using the telescoping feature or
the CCD in the camera can be adjusted.
- Lock the back focus adjustment.
At this point the lens should produce sharp images from
low to high magnification.
Q:
What is the difference between the Zoom
6000 and 12X Zoom?
A: The 12X
zoom has a higher N.A. and larger zoom range. The Zoom 6000 has a smaller
profile. The Zoom 6000 is shorter with a smaller outside diameter.
Q:
What are the resolution capabilities
of your zoom systems?
A: The cut-off
frequency is generally 3000 x N.A. in line pairs/mm, in visible light.
Q:
Why can't you use a 2/3" format
camera with your 12X Ultra-zoom lens?
A: The 12X
lens is designed for use with a ½” CCD. Systems used with
sensors greater than ½” can show vignetting at lower magnification
settings.
Q:
Where can you mount clamps to the zoom
lens?
A: Manual zooms
have cylindrical flanges. Motorized zooms can be mounted with flat plates.
Both manual and motorized zooms can be held using adapter clamps.
Q:
How do I get a required magnification
on my monitor with a video microscope system?
A: Total Magnification
on Monitor =
(Lens Attach. Mag.) x (Zoom Mag.) x (Adapter Mag.) x (Cam/Monitor Mag.)
Q:
Can I attach an M25x0.75t micro objective
to an UltraZoom?
A: All The M25 x 0.75t objectives
will thread directly into our UltraZooms with use of the correct coupler.
Zoom 6000 and 12X UltraZoom lenses include these couplers when ordered.
Precise Eye lenses also require a coupler to attach objectives. This
should be purchased separately.
Q:
Why do you call it a Zoom 6000?
A: This was
a past product name. The lens actually provides a 6.5:1 zoom ratio or
change in magnification.
Q:
Why do you call it a 12X zoom?
A: The lens
provides a 12:1 change in magnification from low to high.
Q:
Can I get a video coupler for my microscope
from Navitar?
A: Yes. Click
here for data on our video coupler.
IR / UV FAQs:
Q:
Do your optics work in the Infrared wavelength?
A: Nominal
operating wavelengths are 400-1500 nm.
Q:
Do your optics work in the Near UV?
A: Nominal
operating wavelengths are 400-1500 nm.
Q:
Do you offer Near IR Lenses?
A: Yes. See
details for our 12X
NIR lens system or our Zoom
6000 NIR lens system.
Motorized Options FAQs:
Q:
What endurance can be expected from a Navitar motorized system?
A: The system
wear characteristics are a function of operating speed. Navitar recommends
that a complete cycle time not be less than 3 seconds.
Q:
Does Navitar offer holders or clamps for their motorized systems?
A: A flat surface-mount
option may be purchased for the 12X and Zoom 6000 systems. Alternatively,
the user may affix the system by using a clamp placed on the adapter.
Clamps shall NOT be applied in any location other than the adapter as
this may cause interferences within the zoom system. Click
here for mounting options.
Q:
Does Navitar supply drivers for their motorized systems?
A: Yes, Navitar
has gone to great lengths to make a complete motorized solution available
for your zoom needs. We highly recommend that our motorized zoom systems
be used in conjunction with our driver/control
options. The options consist of either a board level or an enclosed
driver. Both are computer controlled and an additional manual
control box can be connected to any driver model. Additionally,
Navitar will supply the source code for easy interface with existing
equipment.
Q:
Since Navitar has three different motor options (2-phase stepper, 5-phase
stepper and DC servo with encoder) how do I select the proper system for
my application?
A: It depends
on your personal preference and requirements, as well as the following
considerations: The 2-phase stepper and the DC servo have a smaller
‘footprint’ than the 5-phase stepper. However, the 5-phase
provides the greatest resolution due to the decreased step-angle from
the 2-phase system. Additionally, the 2-phase and 5-phase have ‘holding
torque’ inherent in the stepper design. The 2-phase will tend
to get warm to the touch where the 5- phase will not, so if temperature
is an issue consider the 5-phase. See
motor options.
Q:
Can you go from one position to the next position on your motorized lens
without going to the home position?
A: Yes, you
can turn off the “homing” feature if absolute magnification
repeatability is not an issue. If, however, repeatability is an issue,
drive the lens towards the home position and always approach your target
location from the same direction (home) to omit the backlash in the
system.
Q:
How long can the cables be for your motorized zoom lens?
A: RS-232 Cables
= 150 feet / 46 meters
USB Cables = 10 feet / 3 meters max
DC Drive = No limit to length (voltage drop)
DC Encoded = 6 feet / 1.8 meters max
2-Phase Stepper/HE = 16 feet / 4.9 meters max
5-Phase Stepper/HE = 16 feet / 4.9 meters max
Q:
Which axis controls the zoom on your control box?
A: The zoom
shall always be axis 1 and the fine focus shall always be axis 2.
Q:
What is the repeatability of our motorized zoom system?
A: Refer to
the motorized operator’s manual on the Navitar website:
Motorized
Controller User Manual for Windows
Motorized
Controller User Manual for LabVIEW
If proper homing procedures are followed, along with environmental
control and consistent operating parameters, magnification will repeat
within less than 1/10 of 1%. Lateral repeat equals 2-3 microns. Lateral
zoom wander equals 20-30 microns.
Large Format Lens FAQs:
Q:
Do you carry large format lenses in either C or F mount?
A: Yes, we offer both C-mount and
F-mount large format lenses. Click
here to view our selection of large format lenses.
Custom Design FAQs:
Q:
Can Navitar design custom products?
A: Yes. Contact
Navitar with your specific requirements and our expert engineering team
will work with you to develop a custom solution to meet your needs.
After discussing your specifications in detail, we will offer a solution
that outlines system performance, operating trade-off, NRE charges,
and estimate prototype and serial production costs.
Q:
I need a solution that is just a little different from what I see in the
catalog. What should I do?
A: Call your
regional sales rep. Navitar has many years of experience in providing
solutions for a wide spectrum of machine vision applications. Chances
are that we've already addressed a situation similar to yours.
Other Questions? Back
to Top
Q: My question is not listed here. How do I get
my question answered?
A: You can e-mail
your question to Navitar, contact your local
sales representative, or call Navitar directly at 1-585-359-4000.
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