F-Term-List

G01B9/02-9/029

AA00
MEASUREMENT

AA01

AA02

AA03

AA04

AA06

AA07

AA09

. Measurement of displacement or position

. . Measurement in multiple directions

. . Measurement that includes determination of direction of movement

. . Relative position or displacement between two bodies

. Posture or angle

. . Multiple degrees of freedom

. Form of surface

AA11

AA13

AA15

AA16

AA17

. Measurement of deformation

. Straightness or linearity

. Interferometers in general

. . Shear amount

. . Shear origin

BB00
TARGET OBJECTS

BB01

BB03

BB04

BB05

BB07

. Moving tables

. Optical elements

. . Lenses

. . Mirrors

. Rough surfaces

G01B9/02-9/02098

CC00
PURPOSE

CC01

CC02

CC03

CC04

CC05

CC06

CC07

CC08

CC09

CC10

. Improvement of signal-to-noise (S/N) ratio

. . Improvement of fringe contrast

. . Prevention of unnecessary fringes

. Improvement of resolution

. . Doubling of optical path difference

. . . Increases in reflection times

. Prevention of deviation of reflected light beams

. Wavelength stabilization

. Prevention of rear-surface reflection

. Others

DD00
CALIBRATION AND MEASURES TO PREVENT ERRORS

DD01

DD02

DD03

DD04

DD05

DD06

DD07

DD08

DD09

DD10

. Cause of errors

. . Temperature

. . . Thermal expansion

. . Air fluctuations

. . Oscillation

. . Variations in the refractory index

. . Angle of the reflecting mirror

. Prevention of errors

. Calibration

. . Use of items as standard baselines

EE00
TYPES

EE01

EE02

EE04

EE05

EE06

EE08

EE09

EE10

. Michelson types

. . Twyman-Green types

. Mach-Zehnder types

. Fizeau types

. Fabry-Perot type

. Shearing types

. Reflected-light feedback types

. Others

FF00
LIGHT SOURCES

FF01

FF02

FF03

FF05

FF06

FF07

FF08

FF10

. Lasers

. . Types of lasers

. Light sources other than lasers

. Homogenous light

. 2 frequencies

. Continuous wavelengths or white light

. Variable wavelengths

. Stabilization of light quantity

GG00
OPTICAL SYSTEMS

GG01

GG02

GG03

GG04

GG06

. Wave-guiding means

. . Optical fibers

. . . Single-mode optical fibers

. . . Systems wherein a polarized surface is maintained

. . Light waveguides

GG11

GG12

GG13

GG14

GG15

GG16

GG17

GG18

GG20

. Measurements or reference light-reflecting means

. . Plane mirrors

. . Prisms

. . Diffuse-reflection surfaces

. . Reflex reflectors

. . . Corner cube types

. . Ends of fibers or light waveguides

. . Reference angles for reflecting means

. Special reflecting objects placed within optical paths

GG21

GG22

GG23

GG24

. Means for separating or coupling of luminous flux

. . Half mirrors and beam splitters

. . Polarized beam splitters

. . Joining of fibers or light waveguides

GG31

GG32

GG33

GG34

GG35

GG37

GG38

GG39

GG40

. Means related to polarization

. . Polariscopes

. . . Polariscopes used as polarizers

. . . Polariscopes used as analyzers

. . . Reference types

. . Phase plates

. . . Plates with a (lambda)/4 ratio

. . . Plates with a (lambda)/2 ratio

. . . Compensation plates

GG41

GG42

GG44

GG45

GG46

GG47

GG49

. Filters

. . Wavelength selection filters

. Lenses

. . Rod lenses

. . Fresnel lenses

. . Other special lenses

. Diffraction elements

GG51

GG52

GG53

GG55

GG57

GG58

GG59

. Means for controlling the phase or length of the optical path

. . Geometric-length control

. . Phase shifters

. Means for control of optical frequency

. Optical path switching means

. . Exchanging of optical elements

. . Exchanging of shutters

GG61

GG62

GG63

GG64

GG65

GG66

GG68

GG69

GG70

. Stripe-scanning light systems

. . Bi-directional shearing

. Mounting of optical elements

. Adjustment of optical elements

. . Focusing

. . Adjustment of the optical axis

. Electro-optical effects

. Magneto-optical effects

. Acousto-optical effects

HH00
DETECTION UNITS

HH01

HH02

HH03

HH04

HH05

HH06

HH07

HH08

HH09

HH10

. Spot detection

. Beam detection

. Plane detection

. Number or form of light-receiving elements

. . One element

. . Two to four elements

. . Line sensors

. . Two-dimensional solid image pickup elements

. . Image pickup tubes

. Uninterrupted light detection

JJ00
PROCESSING UNITS

JJ01

JJ02

JJ03

JJ04

JJ05

JJ06

. Analysis of interference patterns

. . Measurement of the pattern area or spatial frequency

. . Detection of the envelope

. Measurement of the frequency

. Measurement of the beat

. Units with memory

JJ11

JJ12

JJ13

JJ15

. Units with counters

. . Computation of the number of strength variations

. . Counters that can divide or multiply

. Fourier transformations and inverse Fourier transformations

KK00
OVERALL STRUCTURE AND OTHER CHARACTERISTICS

KK01

KK04

. Overall structure

. Other characteristics

G01B9/021-9/029

LL00
HOLOGRAPIC TECHNIQUES

LL01

LL02

LL03

LL04

LL06

LL07

LL08

. Creation of contour lines

. Double-exposure systems

. Real-time systems

. Mean-time systems

. Creation of holograms

. . Hologram elements

. . . Reusable elements

LL11

LL13

LL15

. Characteristic reproduction methods

. Shearing interference

. Multiple holograms

G01B9/04;9/08

MM00
MICROSCOPES AND PROFILE PROJECTORS

MM01

MM02

MM03

MM04

MM05

MM06

MM08

MM09

MM10

. Illumination

. . Transmitted illumination

. . Reflected illumination

. . . Perpendicular reflection

. . . Oblique reflection

. . Shared use of transmission and reflection

. . Variation of illumination by means of magnification

. . Uniform lighting

. . Measurement of the location of the light source

MM11

MM12

MM13

MM14

MM15

MM16

MM17

MM18

MM19

. Indexes or scales

. . Length scales

. . Angle scales

. . Simple indexes (e.g., lines)

. . Moving indexes or scales

. . Indexes or scales that are optically projected

. . . Projection into an optical path (e.g., recticles)

. . . Composite output from separate optical paths

. . Scales on screens

MM21

MM22

MM23

MM24

MM25

MM26

MM28

MM29

. Examination platforms

. . Moving platforms

. . . Movement in the direction of the optical axis

. . . Movement in a direction perpendicular to the optical axis

. . . Rotation

. . . Measurement of the amount of travel

. Screens

. . Rotary screens

MM31

MM32

MM33

MM34

MM36

MM37

MM38

MM39

MM40

. Movable lens-tubes and focusing means

. . Movement in the direction of the optical axis

. . Movement in a direction perpendicular to the optical axis

. . Measurement of the amount of travel

. Double projection of a single body

. Projection of multiple bodies

. . Composite optical paths

. . . Changing of colors

. . . . Complementary colors

MM41

MM42

MM44

MM45

MM47

MM48

MM50

. Irradiation marking of objects to be measured

. Collimation mechanisms for objects to be measured

. Combination with photoelectric converters

. . Converters with image pickup apparatuses

. Characteristic optical systems

. . Optical systems for movement of images

. Indication of measured values

2F064	Instruments for measurement of length by optical means
	G01B9/00 -9/10