KEYENCE CA-LMHR Series - Manual

Copyright (c) 2014 KEYENCE CORPORATION. All rights reserved.
13064E 1074-1 96M13064 Printed in Japan
Ultra High-resolution Telecentric Macro Lens
CA-LMHR Series
Instruction Manual
Before using this lens unit, be sure to thoroughly read this Instruction Manual.
After you are finished with this Instruction Manual, be sure to store it in a safe place
for quick reference.
This package includes the following items. Make sure that all of the items are in the
package.
 CA-LMHR08/CA-LMHR13/CA-LMHR20 (Lens)...............................................1
 Instruction Manual (this document)
 Symbols
The following symbols are used for the list of precautions to ensure safety and to
prevent personal injury and/or property damage when using the device.
 Installation
Do not use the CA-LMHR Series in the following locations:
 Handling
 Installation method
*1 The pixel resolution is the field of view per pixel. This varies depending on the camera used.
US = Unit cell size (size of 1 pixel of the receiving element)
*2 WD indicates the distance from the tip of the lens to the workpiece. Changing the
magnification changes this distance.
*3 The resolution indicates a theoretical value calculated at 550 nm.
*4 The depth of field is a theoretical value calculated with an effective f-value of 16 and a circle
of least confusion of 40 μm. This varies depending on the f-value.
Specified fixing locations on the device
Fix the lens at the locations indicated with shade in the front.
Checking the Package Contents
Safety Precautions
CAUTION
It indicates a hazardous situation which, if not avoided, could result
in minor or moderate injury.
NOTICE NOTICE
It indicates a situation which, if not avoided, could result in product
damage as well as property damage.
It indicates additional information on proper operation.
Tips on Correct Use
CAUTION
Do not look at light sources through the lens. Doing so may cause
eye damage.
NOTICE NOTICE
• Locations where the CA-LMHR Series is exposed to direct
sunlight.
• Locations where the ambient temperature exceeds or drops below
the specification range, or where the temperature changes rapidly.
• Locations which are poorly ventilated.
• Locations where the relative humidity drops below 35% or
exceeds 85% RH, or where condensations occurs.
• Locations where there are corrosive gas or flammable gas.
• Locations where there are much dust, sodium, or iron powder.
• Locations where water, oil, or chemicals may splash onto the
CA-LMHR Series.
• Locations where the CA-LMHR Series may be directly subjected
to vibration or impact.
NOTICE NOTICE
• In case of transportation, use the same packaging as when the
unit was delivered to avoid damage.
• Take care not to dirty the surface of the lens and do not touch it
with your hands.
• If the surface of the lens is dirty, clean it using a commercially
available lens cleaning kit.
NOTICE NOTICE
• When installing this product, be sure to fix the camera side and
the lens side in place at the two locations indicated (as shown
in the dimensions diagrams).
• Never fix in place only the camera or the lens, as doing so may
lead to the lens falling off of the camera, which may lead to
accidents, failures, and damage.
• To fix the lens in place, apply uniform pressure at the indicated
locations. Never fix the lens in place at locations other than
those indicated or use a method that applies pressure in a
single location such as a setscrew. Doing so may lead to
product failures or damage.
• This is a precision instrument, so if you will use this product in
an environment that will subject it to direct vibrations or
impacts, implement appropriate vibration proofing
countermeasures. Continually using this product in an
environment that subjects it to vibrations or impacts may lead
to product failures or damage.
• If you will attach this product to a piece of equipment, use an
insulated attachment base or similar device to ensure that this
product is insulated from the equipment. The lens and camera
are grounded through their frames, so installing these products
without guaranteeing insulation in a location in which electric
potential differences and noise are present may lead to
equipment damage and malfunctions.
With this product, changing the magnification causes the position of
the lens on the camera mount to change. Therefore, fix the lens in
place after you have finished setting the magnification.
Point
Point
Specifications
Model CA-LMHR08 CA-LMHR13 CA-LMHR20
Pixel resolution *1
(US 3.5 μm: low magnification to
US 4.4 μm: high magnification) 5 μm/pixel 3 μm/pixel 2 μm/pixel
Optical magnification x0.69 to x0.88 x1.15 to x1.47 x1.73 to x2.20
WD
(with standard
magnification) *2
Low magnification 111.0 mm 111.6 mm 114.8 mm
High magnification 111.0 mm 111.6 mm 109.4 mm
Maximum supported image size 2/3-inch
Captured
field of view
2/3"
(Low magnification) 12.2 mm x
10.3 mm
7.3 mm x
6.2 mm
4.8 mm x
4.1 mm
1/1.8"
(High magnification) 8.0 mm x
6.0 mm
4.8 mm x
3.6 mm
3.2 mm x
2.4 mm
Effective f-
stop Low magnification 5.6 to 23 5.7 to 38 6.8 to 43
High magnification 7.1 to 29 7.3 to 49 8.7 to 55
Resolving power Center/periphery: 120 cycles/mm
Resolution *3 5.4 μm 3.3 μm 2.6 μm
TV distortion
Low magnification 0.005% 0.011% 0.001%
High magnification -0.001% -0.015% 0.011%
Depth of
field *4
Low magnification 2.689 mm 0.968 mm 0.428 mm
High magnification 1.653 mm 0.592 mm 0.264 mm
Mount C-mount
Ambient temperature and humidity
ranges
0 to 50°C, 35 to 80%RH (No condensation)
Weight Approx. 285 g Approx. 330 g Approx. 410 g
All the above specifications are values based on the optical design,
so there may be differences based on factors such as assembly
precision.
Dimensions
Point
31.1
16.8
33.9
100.1
32.9
100.4* 17.526
3.5
C-mount
1-32 UNF
φ39.5 φ50.0
* This varies depending on the focal magnification.
Extension amount: 0 to 21.2 mm (the extension amount is at its
maximum value when the magnification is at its maximum value).
31.1
6.5
31.0
3.5
17.526
113.4
114.0*
C-mount
1-32 UNF
φ42.0 φ50.0
* This varies depending on the focal magnification.
Extension amount: 0 to 10 mm (the extension amount is at its
maximum value when the magnification is at its maximum value).
50.5
41.5
30.6
3.5
17.526
126.0
34.3
127.0*
C-mount
1-32 UNF
φ44.0 φ48.0
* This varies depending on the focal magnification.
Extension amount: 0 to 20.6 mm (the extension amount is at its
maximum value when the magnification is at its maximum value).
CA-LMHR08 CA-LMHR13
CA-LMHR20
96M13064