Optical Sensor

Select from Optical Sensor ModelGuidance

Angle and Tilt Laser Autocollimator: Smart LAC"EKVTUNFOUUJMUJOHBOHMF

5JMU

Non-contact angle and tilt measurement by using laser.
ӖEasy setup and measurement by Non-contact and Wide working distance.
ӖVarious application as Optical alignment, Audio & Visual equipment alignment, Machinealignment and material check.
ӖImage Processing Unit can analyze various condition and process various output.

Wide, High Speed, High Resolution Laser Autocollimator: Smart W-LAC
5JMU

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4BNQMJOHDynamic Measurement forHigh Speed moving Objects.
ӖNon-contact Measurement by Laser.
ӖHigh Speed sampling: 500,000Hz(0.2μSec).High Resolution:0.0001deg(0.36μSec).
ӖEnhanced dynamic defect analysis can be done by high speed measurement
and analog output.

5001

Guidance

Angle and Height Multi-AXIS Laser Autocollimator: MAX-LAC-3D)FJHIU5JMUĠĠ

3-dimension(Ġx,Ġy, Z) Parameter can be measured at once.
ӖCo-axial MeasurementOne sensor can measure 3-dimension parameter.
ӖNon-contact: Specular reflection measurement by laser.
ӖExcellent Repeatability and Linearity.
ӖHigh speed sampling (Less latency by transmission delay).
˥Please contact us for details.

Angle, Height and Position Multi-AXIS Laser Autocollimator: MAX-LAC-5D
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5-dimension(Ġx,Ġy, X,Y,Z) Parameter can be measured at once.
ӖCo-axial MeasurementOne sensor can measure 5-dimension parameter.
ӖNon-contact: Specular reflection measurement by laser.
ӖExcellent Repeatability and Linearity.
ӖHigh speed sampling (Less latency by transmission delay).
˥Please contact us for details.

5002

Optical SensorSelect from Applications
Application guide

Smart LAC
Lens tilting Angle

VCM actuator drift

External Laser tilting angle

Smart W-LAC

Smart LAC

Galvano mirror Angle

Optical Device Mounting
angle

Parallelism for Motor and shaft

Embedded system

CMOS device tilting
angle

Smart LAC
Prism Angle

Digital Camera Mirror angle

Smart LAC
Mirror Parallelism

Mechanical parts Parallelism byHigh precision press

Smart W-LAC
Motor Center run-out

Actuator Pitch and Yawing

MAX LAC-3D/-5D
VCM inspection

5003

Auto Focus inspection

Select from Industry area
Application guide

Smart LACMechanical parts Parallelism byHigh precision press

Prism Mounting Anglealignment

Press angle measurement

Embedded system

Smart LAC
Parallelism for Motor and shaft

Optical Device tilt angle

Actuator Skew measurement

Lens tilting angle

Smart LAC
Actuator Pitch and Yawing

Gimbal angle measurement

Digital Camera Mirror angle

Smart W-LAC
Galvano mirror wobblemeasurement

Motor Center run-out

MAX LAC-3D/-5D
VCM Actuator tilt Measurement

VCM Inspection Auto Focus
inspection

Auto Focus

5004

Optical Sensor

Laser Autocollimator Technical Guide"OHMF
NFBTVSFNFOUӖWhat is a Laser autocollimator?

ӖAngle measurement principle

Laser autocollimator

When the parallel light incidents to the collecting lens, it will be٬Measure instantaneously the angle

converted to the position information on the focal plane dependingon the incidence angle.Irradiation of parallel laser beam to thein a single location.
٬ĠxĠy 2 demension coodinates display

measurement object using this principle, the tilt value of the object will

٬Long width

be measured by collecting reflection light on the CMOS.

٬High resolution 1 sec.
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PositionCposition

Display 2D angle coordinates

Angle

Collimating lensCollimating lens

Length measurement system
Calculates the differences in height between any 2 points with alength measurement sensor.

Measurement objects
Left drawing:If the object is perpendicular to the irradiation beam, thereflection light returns to vertical, and light will be collected in
5μm

the center.
5Resolution is =Atan(0.005/30)=34sec
in 5μm change.ĠAtan0.005
3034second
例：30ｍｍRight drawing:In case of the object is tilted, the reflection light will tilt tothe left, and also collecting area will move to the left.
Can be known the tilt by measuring the different between the reflection
light and collecting area.

)JHITQFFE٬)JHISFTPMVUJPO4UBOEBSE"DDFTTPSJFTӖUnchanged the measurement result, even the measurement distance is changed.

ӖSpecialized usage: External light source incidence measurement

The measurement result that is gotten by using an autocollimator as anNormal (The reflection measurement)

angle is measured directly even if the distance between the object isNormally an autocollimator is used in the reflection measurement. (Leftchanged.Available for pitching and yawing measurement of the up anddrawing)When the object tilt is Ġ degree, the reflection light returns 2Ġ

down.

degree angle.Autocollimator shows tilt angle Ġ degree of the object.
(e.g.) When the object tilts 0.1-degree, 0.2-degree tilted reflection
light returns to an autocollimator, but measurement value is displayed
0.1-degree.

Imaging in the same point

Refrected optics angle
is always same
Measurement
distance（Z direction）

Measure the external light source
Can be measured laser beam tilt that is emitted from the object lightsource by turning off the semiconductor laser (LD) in the autocollimator.

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ӖField of view angle

The spot position on the sensor is displayed as 2-dimensional angular

The measurement range (field of view) of the laser autocollimator iscoordinates.

determined by the design value of the optical system of the sensor

As shown in the figure below, the X-direction angle component,head.

Y-direction angle component, and spot-direction angle are displayed.

Basically, the measurable range is limited by WD (working distance).

The unit of angle can be selected from deg, rad, sec.

Generally, the shorter the distance can measure the wide angle,"OHMF
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ӖAngle value

and the longer the distance can only measure the smaller angle.
For details, refer to the specifications of each model.
2-dimensional angularY-BTFS
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Dcoordinates

D＝ （X2＋Y2）
X

Laser Autocollimator Technical Guide [Notice]ӖWorking DistanceӖLaser Class

If the distance between Laser Autocollimator to the Object is longer

Class 1than a specification, the reflected beam may go out from sensor area ,then a specification angular range may not cover. Please use within aspecification W.D.

Class 1M

Class 2

Class 2M

Class 3R

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Working Distance(Z-AXIS Direction)

Class 3B

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Class 4A laser that is safe under reasonably foreseeable driving
conditions.
Lasers with a wavelength range of 02.5 to 4000 nm
that are safe under reasonably foreseeable operating
conditions. However, it is considered dangerous whenobserving using optical equipment.
A laser with a wavelength range of 400 to 700 nm (visiblelight) whose eyes are protected by avoidance behavior
including blinking.
A laser with a wavelength range of 400 to 700 nm (visiblelight) whose eyes are protected by avoidance behavior
including blinking. However, it is considered dangerous
when observing using optical equipment.
Lasers with a wavelength range of 302.5 nm to 106 nm
where direct beam observation is potentially dangerous.
Within 5 times that of Class 2 in visible light (400 to 700nm). Wavelengths other than visible are within 5 times
that of class 1.
Lasers that are dangerous to observe the beam directly.
However, diffuse reflected light is usually consideredsafe.
A laser that can cause dangerous diffuse reflection. Not
only do they cause skin damage, but they can also posea risk of fire.

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Source: JIS C 6802 excerpt
Publisher: Japanese Standards
Association

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Optical Sensor

Sample preparation
ΖCheck Object Status"OHMF
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5025

Smart LAC H410

Smart W-LAC H900

Measurement Range±1.75°±0.17֐0.9°

Smart W-LAC H920
±5.0°

Working Distance

0֐300mm

150mm or 230mm

70mm

Sampling Speed

40Hz

250/500Hz200kHzIn case of Smart W-LAC H900,H920"OHMF
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5026

Optical Sensor

Laser Autocollimator Technical Guide(Measurement Technique)"OHMF
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ӖRight angle Prism measurement

ӖScattered reflection Measurement (Resin/Metal)

Right angle(90deg) isLaser Autocollimator can not handle scattered light, divergent light andmeasured by using jig to holdcondensed light.

the prism as blow image.

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By putting parallel mirror on to the object, Laser Autocollimator canmeasure object tilting angle.
By Laser Autocollimator setting as horizontal way, Vertical Prism plane
can be measured.

ӖSimultaneous measurement for two surface parallelism

ӖLens tilt angle measurement

Laser Autocollimator can measure two different height or two different
The lens tilt angle is measured

position tilt angle simultaneously.

by pointing the laser on the Lens
Flange(Flat surface point).

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Use mirror surface jig which ismounted on to Lens flange.

<Left figure> One laser beam is transmitted and the parallelism coaxial
surface is measured.
<Right figure> Using 2-Beam adaptor(Optional), different height andposition planes parallelism can be measured simultaneously.
At these case, when two plans become parallel, observed spot overlap
at one point.

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5027

ӖGlossary: Binarization Threshold

When measuring the tilt of a surface with low flatness such as the edge
surface of a lens, Luminance center of gravity mode is suitable.

The Binarization threshold is the#JOBSJ[BUJPO5ISFTIPME

criterion for converting Gray image toLuminance center of Gravity mode has better Linearity and repeatability

Binary image.

than Area Center of Gravity mode.

Binarization processing is an image
processing method that sets to One"OHMF
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ӖTips for center of gravity evaluation

which is excess than criteria and other

set to Zero.
Remarks: This criteria is set in the Area-BTFS
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Center of Gravity Mode.
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ӖGlossary: 4096 Gradations
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Autocollimator is 12bit (4096Steps)
At the Brightness Center of gravity

When using the Brightness Center of Gravity Mode, in order to improvecase, 12bit data is used to get

the measurement accuracy, Check the Intensity and use it within anBrightness Center of Gravity,

Appropriate Brightness range.

At the Area Center of Gravity,Binary data is used to get Aera
Center of Gravity.
Then the Brightness Center ofGravity value is accurate the Area
Center of Gravity value.

ӖFluctuation measurement for Precision motor/Optical disk drive.
H900 series can perform the Bluranalysis such as Precision motor

Remarks: Noise reduction criteria
must be set for the Brightness
Center of Gravity mode.

)JHITQFFE٬)JHISFTPMVUJPOor Optical Drive surface blur/axial
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shake analysis.

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5028

Optical Sensor

The difference between Smart LAC to Smart W-LAC"OHMF
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ӖThe detector is different%FUFDUPS
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Detector$POEFOTFSMFOT$PMMJNBUFMFOT

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Model

CMOS

SSmart LAC H410

PSD

Smart W-LAC Series
H900, H920

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CMOSմմComplementary Metal Oxide Semiconductor
2D position sensor
Vertical 480Pixel x Horizontal 640pixel

Detector

PSDմմPosition Sensitive Detector
1D detector using surface resistance characteristics.

Monitor View
AdvantageDue to continuous electrical signal. Detector can provide
High resolution and Fast response time.
X= −0.3deg
Y= 0.0deg
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5029

Based on X and Y position data, CCD/CMOS
type sensor can handle several spot at once.

Disadvantage
Due to 1D sensor, it could not identify several spot position.(Not support
Multi Spot measurement).

Requests/Inquiries
For requests and inquiries regarding our products and support, please contact us.

"OHMF
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٬Need a drawing of an optical sensor product٬Need a price of the product٬Need an instruction manual for optical sensor products-BTFS
BVUPDPMMJNBUPS٬Need a sample program of IPU

e-ost@suruga-g.co.jp
Pl
Please CContact.

٬Demo request
ΖCompany NameΗContact Person
ΘModel nameΙDesirable Date
ΚUse case

Please note Ζ to Κ, then please contact us.

e-ostsuruga-g.co.jp
Plt t
Please CContact.

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Standard Demo period is two weeks.

٬Products Calibration Service
٬Issue Inspection Certification

Please contact with a request for [Inspection Certificationց

e-ostsuruga-g.co.jp
Please Contact.
˥Calibration fee is requird separately.
˥If you need to ship the inspection certificate and the producttogether,Please contact us before ordering.
5030