WO2006022253A1 - レンズメータ - Google Patents
レンズメータ Download PDFInfo
- Publication number
- WO2006022253A1 WO2006022253A1 PCT/JP2005/015262 JP2005015262W WO2006022253A1 WO 2006022253 A1 WO2006022253 A1 WO 2006022253A1 JP 2005015262 W JP2005015262 W JP 2005015262W WO 2006022253 A1 WO2006022253 A1 WO 2006022253A1
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- WO
- WIPO (PCT)
- Prior art keywords
- lens
- measurement
- mark
- progressive
- display
- Prior art date
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- 230000003287 optical effect Effects 0.000 claims abstract description 79
- 230000000750 progressive effect Effects 0.000 claims abstract description 57
- 238000001514 detection method Methods 0.000 claims abstract description 24
- 238000005259 measurement Methods 0.000 claims description 175
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 230000004907 flux Effects 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 18
- 238000013459 approach Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 2
- 208000001491 myopia Diseases 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
- G01M11/0221—Testing optical properties by determining the optical axis or position of lenses
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/28—Investigating the spectrum
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
- G01M11/0228—Testing optical properties by measuring refractive power
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
Definitions
- the present invention relates to a lens meter that measures optical characteristics of a lens.
- a measurement light beam is projected onto a measurement target lens located on the measurement optical axis, and the measurement light beam that has passed through the target lens is received by a light receiving sensor. Based on the light reception result, optical characteristics such as refractive power of the target lens are obtained.
- the intended position or area of the target lens is displayed on the screen power display for alignment used for aligning the measurement lens with respect to the measurement optical axis. For example, when a progressive lens is measured, a progressive lens mark (graphic image) simulating the progressive lens is fixedly displayed in the screen, and a target mark indicating the measurement position or measurement area is relative to the measurement optical axis. It is moved and displayed in the screen according to the movement of the target lens.
- an object of the present invention is to provide a lens meter that can easily perform accurate alignment for measuring a progressive lens.
- a lens meter is a lens meter that measures the optical characteristics of a measurement target lens, and includes a light source that projects a measurement light beam onto a target lens, a light receiving sensor that receives the measurement light beam that has passed through the target lens, and , A calculation unit that obtains the optical characteristics of the target lens based on the result of light reception by the light receiving sensor, mode selection means for selecting a single focus lens measurement mode and a progressive lens measurement mode, and progressive lens measurement When a mode is selected and alignment is performed so that the measurement position is within the near-field portion of the progressive lens that is the target lens, Based on the optical characteristics of multiple positions, detection means for detecting the deviation direction and degree of the current measurement position with respect to the near part, display part for displaying the alignment screen, and detection result of the detection means, And a display control unit that displays on the display unit a guide mark indicating the direction and degree of movement of the lens so that the measurement position is within the unit.
- the measurement optical system is an optical system capable of simultaneously measuring optical characteristics at a plurality of measurement positions in the measurement region of the target lens, and the detection means includes the obtained plurality of measurements. Based on the gradient of addition power or equivalent spherical power in the optical characteristics of the position, the degree of deviation of the current measurement position with respect to the near portion is detected.
- the display control unit displays a progressive lens mark imitating a progressive lens and a target mark indicating a measurement position, and a guide mark as a progressive lens mark.
- the image is displayed in an area corresponding to the near portion in the middle, and the relative display positional relationship between the target mark and the guide mark is controlled based on the detection result of the detection means.
- the detection means is obtained when the progressive lens measurement mode is selected and the measurement position is aligned within the distance portion of the progressive lens as the target lens. Based on the optical characteristics of the multiple positions, the displacement direction and degree of the current measurement position with respect to the distance portion are detected, and the display control unit is configured so that the measurement position comes within the distance portion based on the detection result of the detection means. In order to achieve this, a guide mark indicating the direction and degree of movement of the lens is displayed on the display unit.
- FIG. 1 is a schematic external view of a lens meter according to an embodiment of the present invention.
- FIG. 2 is a schematic configuration diagram of an optical system and a control system of the lens meter.
- FIG. 3 is a diagram showing an arrangement (distribution) pattern of indicators formed on an indicator plate.
- FIG. 4A is a diagram showing a display screen when alignment is performed so that the measurement region (measurement position) is within the distance portion of the lens LE.
- FIG. 4B is a diagram showing a display screen when alignment is performed so that the measurement region (measurement position) is within the distance portion of the lens LE.
- FIG. 4C is a diagram showing a display screen when alignment is performed so that the measurement region (measurement position) is within the distance portion of the lens LE.
- FIG. 4D is a diagram showing a display screen when alignment is performed so that the measurement region (measurement position) is within the distance portion of the lens LE.
- FIG. 4E is a diagram showing a display screen when alignment is performed so that the measurement region (measurement position) is within the distance portion of the lens LE.
- FIG. 5A is a diagram showing a display screen when alignment is performed so that a measurement region (measurement position) is in the near portion of the lens LE.
- FIG. 5B is a diagram showing a display screen when alignment is performed so that the measurement region (measurement position) is in the near portion of the lens LE.
- FIG. 5C is a diagram showing a display screen when alignment is performed so that the measurement region (measurement position) is in the near portion of the lens LE.
- FIG. 5D is a diagram showing a display screen when alignment is performed so that the measurement region (measurement position) is within the near portion of the lens LE.
- FIG. 5E is a diagram showing a display screen when alignment is performed so that the measurement region (measurement position) is in the near portion of the lens LE.
- FIG. 5F is a diagram showing a display screen when alignment is performed so that the measurement region (measurement position) is in the near portion of the lens LE.
- FIG. 6 is a diagram illustrating an arrow guide mark.
- FIG. 7A is a diagram for explaining a method of detecting the degree of approach of the measurement region (measurement position) to the near portion and (the degree of deviation) in order to determine the number of arrows of the arrow guide mark.
- FIG. 7B is a diagram for explaining a method of detecting the degree of approach of the measurement region (measurement position) to the near portion and (the degree of deviation) in order to determine the number of arrows of the arrow guide mark.
- FIG. 1 is a schematic external view of a lens meter according to an embodiment of the present invention.
- a display 2 such as a liquid crystal display provided on the upper part of the main body 1 of the lens meter.
- a switch 3 corresponding to the switch display displayed on the display 2 is pressed, necessary input instructions such as switching of the measurement mode are performed.
- the lens LE to be measured is mounted on a nosepiece (lens mounting table) 4. Then, when the lens presser 5 is lowered to the lower side (the nosepiece 4 side), the lens LE placed on the nosepiece 4 is stably held.
- a frame abutment that can move in the front-rear direction (arrow A direction) is applied to the lower end of the left and right lens frames (or the left and right lenses) (the lower end in the spectacle wearing state). Lens contact) By making 6 abut and stabilize, the lens axis angle of lens LE can be measured accurately.
- the marking mechanism 7 is used when marking the lens LE.
- the READ switch 8 is a switch for sending an instruction signal for storing the measurement result (optical characteristic data) of the lens LE. When the switch 8 is pressed, the measurement result is displayed on the display 2 and stored in the memory 42 in the main body 1.
- the power switch 9 is a switch for turning on the power of the apparatus.
- FIG. 2 is a schematic configuration diagram of an optical system and a control system of the present apparatus (lens meter).
- 10 is a measurement optical system
- L1 is its measurement optical axis.
- the measurement optical system 10 includes a measurement light source 11, such as an LED, a collimating lens 12, a mirror 13, and a measurement index arranged on the optical axis L1.
- the indicator plate 14 and the two-dimensional light receiving sensor (image sensor) 15 are provided.
- the optical axis L1 passes through the center of the opening 4a of the nosepiece 4 and is perpendicular to the opening plane of the opening 4a.
- the indicator plate 14 is held by the holding member 16 of the main body 1 and is arranged immediately below the opening 4a.
- the opening 4a is a circle having a diameter of about 8 mm.
- FIG. 3 is a diagram showing an arrangement (distribution) pattern of the indicators formed on the indicator plate 14.
- the indicator plate 14 has a circular shape with an outer diameter slightly larger than the inner diameter of the opening 4a, and a large number of indicators 20 are formed.
- the index 20 of the present embodiment is arranged in a lattice pattern at a pitch of approximately 0.5 mm around the circular large hole 21 having a diameter of approximately 0.4 mm, which is the center index 21 disposed at the center position through which the optical axis L1 passes.
- the peripheral indicator 22 is a circular small hole 22 having a diameter of about 0.2 mm, and also has a force.
- the number of indicators 22 is about 200, and they are arranged within a range of about 7mm in diameter centered on the optical axis L1.
- the index 20 may be formed by applying a black Cr coat in which the index 21 and the index 22 are outlined on the rear surface of the index plate 14.
- the image of the index 21 is an image of a reference index for specifying the correspondence relationship of the image of the index 22, that is, the lens LE is positioned on the optical axis L1 ,! It is used as the image of the reference index for specifying the image of the index 22 in the measurement state where the lens LE is positioned on the optical axis L1 with respect to the image of the index 22 in the “diopter) standard”.
- the reference index is not limited to the center position of the index plate 14 as long as it can be distinguished from other indices, and the number and shape thereof are not limited.
- the measurement light beam from the light source 11 is converted into a parallel light beam by the collimating lens 12, reflected by the mirror 13, placed on the nosepiece 4 and applied to the lens LE positioned on the optical axis L 1. Projected. Of the measurement light beam that has passed through the lens LE, the measurement light beam that has passed through the aperture 4 a and passed through the index (hole) 21 and index (hole) 22 of the index plate 14 is incident on the light receiving sensor 15.
- An output signal from the light receiving sensor 15 is input to the arithmetic control unit 40.
- a memory 42 is connected to the arithmetic control unit 40.
- the arithmetic control unit 40 refers to the position (coordinates) of each index image detected by the light receiving sensor 15 in the reference state when the lens LE is not placed on the nosepiece 4 but positioned on the optical axis L1.
- To the optical characteristics of the lens LE sinherical power, column Surface degree, column face axis angle, prism degree).
- the lens LE having only spherical power when the lens LE having only spherical power is positioned on the optical axis L1, the lens LE is positioned. In contrast, the position of each index image is the optical center force of the lens LE. Zoom in or out. The spherical power is obtained based on the amount of enlargement or reduction.
- the lens LE having only the column surface power is positioned on the optical axis L1
- the lens LE is positioned.
- the position of each index image is elliptical center force of the lens LE. Zoom in or out.
- the column surface frequency and the column surface axis angle are obtained based on the amount of enlargement or reduction.
- the prism power is obtained based on the amount of parallel movement of the index 21 image or the position of the index 22 image in the vicinity (periphery).
- a lens LE having a spherical power, a columnar power, and a prism power can be considered as a composite of these (see US Pat. No. 3,880,525 (Japanese Patent Laid-Open No. 50-145249)).
- the arithmetic control unit 40 sets the optical characteristics of the lens LE to a set of four adjacent (2 X 2 points) (at least 3) index images, as well as 3 X 3 points, 4 Taking the index images of X 4 points, 5 X 5 points, etc. as one set, it is possible to obtain the average force of the position change of each index image in each set.
- the measurement position (measurement point) in this case is the position of the lens LE corresponding to the center position of each index image set or a specific index image position. Therefore, according to the configuration of the present device (lens meter), each optical characteristic at a plurality of measurement positions (measurement points) in the measurement region of the lens LE corresponding to the opening 4a can be obtained at once.
- the arithmetic control unit 40 controls the display on the display 2 based on the detection result of the alignment state with respect to the optical axis L1 of the position or region where the lens LE is intended. In addition, the arithmetic control unit 40 continuously obtains the optical characteristic distribution in the measurement region at predetermined time intervals based on the output signal from the light receiving sensor 15.
- switch 3 selects the single-focus lens measurement mode or the progressive lens measurement mode, and specifies whether the lens LE is a right-eye lens force lens or a left-eye lens. The following describes the case where the progressive lens measurement mode is selected and the right-eye lens is specified.
- the optical characteristics are obtained from changes in the position of each index image in the 5 x 5 index image set, and the measurement position is the position of the lens LE corresponding to the center position of each index image set.
- the alignment screen 2a of display 2 shows the progressive lens mark 100 with the progressive lens on it and the intersection point of the current measurement area as shown in Fig. 4A.
- a crosshair target mark 101 indicating the measurement position corresponding to the center position, that is, the optical axis L1 is displayed.
- the near part of the progressive lens is about 2mm away from the far part, so if the right eye lens is specified, the progressive part of the mark 100 is changed to the near part. Until it is displayed, it is tilted slightly to the left.
- the mark 100 is moved and displayed as the alignment state changes due to the movement of the lens LE on the nosepiece 4, while the mark 101 is fixedly displayed at the center of the screen 2a.
- the upper part of the screen 2a corresponds to the rear side of the apparatus
- the lower part of the screen 2a corresponds to the front side of the apparatus.
- the calculation control unit 40 determines which region of the lens LE the measurement region (measurement position) is based on the optical characteristic distribution in the measurement region. judge. That is, if there is a difference (change) in the equivalent spherical power or spherical power at each measurement position in the vertical direction of the lens LE, it is determined that the measurement area is at the substantially central portion of the lens LE (substantially central portion of the progressive portion). . If the horizontal prism power with which there is a difference (change) in the addition power or the column surface power at each measurement position in the vertical and horizontal directions of the lens LE is approximately 0, it is determined that the measurement area is in the distance portion. If there is a difference (change) in the column surface frequency at each measurement position in the left-right direction of the lens LE, it is determined that the measurement area is substantially on the left and right sides of the progressive portion.
- FIG. 4B is an example of the screen 2a when it is determined that the measurement region is substantially at the center of the lens LE when placed on the lens LE force piece 4.
- a distance portion guide mark 110 having a shape is displayed in an area corresponding to the distance portion in the mark 100 so as to correlate with the display of the progressive portion.
- the arithmetic control unit 40 stores the equivalent spherical power or spherical power and prism power distribution information in the memory 42.
- the display state of Fig. 4B when the LEG LE which moves the mark 110 to the mark 101 is moved to the back of the device, as shown in Fig.
- the mark 101 is marked against the mark 101 fixedly displayed at the center of the screen 2a. 10 0 and mark 110 move to the upper side of screen 2a (the display position changes).
- the examiner aligns the distance portion of the lens LE with the optical axis L 1 and moves the lens LE so that the mark 110 overlaps the intersection of the marks 101.
- the arithmetic control unit 40 determines that the measurement area is in the distance section when it enters the area where the addition power is almost gone, and as shown in FIG. Change 110 to thick cross mark 115 and display it so that it overlaps the intersection of mark 101. As a result, the fact that the alignment of the distance portion has been completed is notified.
- Fig. 4E shows a display example when the alignment is shifted in the left-right direction in the alignment of the distance portion.
- the deviation in the left-right direction is judged based on the difference (change) in the horizontal prism power.
- the lens LE that overlaps the mark 110 with the intersection of the mark 101 may be moved to the right.
- the center of the mark 100 is displayed so as to overlap the mark 101.
- the arithmetic control unit 40 determines the equivalent spherical power in the vertical direction of the lens LE or the difference in spherical power ( Change), it can be determined that the progressive part is being measured, but the distance to the distance part cannot be determined. For this reason, if the measurement area is in a progressive area close to the lower end side of the lens LE, the mark 100 and the mark 110 will move the mark 101 if the mark 100 is moved in a certain relationship based on the movement amount of the lens LE. It will pass by. In such a display Since the examiner is confused about the direction in which the lens LE should be moved, this device performs display control to reduce the display movement amount of the mark 100 and the mark 110 as the measurement area approaches the distance portion. And
- the distance between the mark 110 and the mark 101 may appear farther than the actual on the screen 2a, but the measurement region is far away.
- the mark 100 and the mark 110 are jumped to display the alignment completion. Since the display always responds while the lens LE is moving, the examiner can grasp the measurement area and quickly move the lens LE accurately.
- the process proceeds to the near distance measurement step.
- mark 115 is erased, and a new circular near portion guide mark 120 is placed in an area corresponding to the near portion in mark 100 so as to correlate with the display of the progressive portion. Is displayed.
- the lens LE is moved to the front of the device so that the mark 120 for measuring the addition power is directed to the mark 101.
- the calculation control unit 40 calculates the moving distance of the distance unit based on the prism power and the refractive power in the distance unit stored in the memory 42. Then, based on the calculated moving distance, the mark 120 and the mark 100 are moved and displayed so as to be directed toward the mark 101 (the display position is changed).
- the display position relationship between the mark 101 and the mark 120 is only a guide in the above method.
- the position of the target near-use part (the same applies to the distance-use part) and its peripheral optical characteristics also differ depending on the lens power and manufacturer, so that the relative positional relationship can be estimated. Therefore, when the current measurement area is brought closer to the near vision part, for example, even if the mark 120 is displayed so that the mark 120 approaches the mark 101 at 1 dot per 1 mm of the optical displacement amount of the prism power, the actual moving distance is If it is long, the mark 120 reaches the mark 101 during the movement of the lens LE, and it becomes impossible to indicate the moving direction to the examiner.
- an arrow guide mark indicating the moving direction of the lens E is displayed as shown in FIG.
- up, down, left, and right arrow guide marks 111a, 111b, 111c, and ll ld are displayed around the mark 120. If the mark 120 reaches the mark 101 while the lens LE is moving However, it is possible to continue issuing movement instructions to the examiner.
- the optical characteristic distribution in the measurement region is measured at a time, so that the degree of approach (according to the movement of the lens LE) before the measurement region reaches the near portion ( It is also possible to detect the perspective of the measurement area relative to the near part (the same applies to the distance part). By using this detection result, the distance to the target position is communicated to the examiner by gradually changing the length of the arrow guide mark.
- the number of arrows of each mark 11 la to 11 Id is changed in three stages. The stage indicated by the number of arrows may be increased from the third stage.
- the gradient (difference) A S per unit distance is obtained from the difference between the maximum and minimum spherical power detected at each measurement position in the vertical direction around the optical axis L1 (see FIG. 7A).
- the magnitude of this slope A S is compared with three judgment reference frequencies S3, S2, S1 (but S3> S2> S1).
- the values of S3, S2, and S1 are predetermined in design from the characteristics of various progressive lenses. If A S ⁇ S3, the number of arrows will be three, assuming that there is still a large deviation from the near-field part. When S3> A S ⁇ S2, the number of arrows is assumed to be two because the near part has been approached.
- the optical perspective is detected based on the magnitude of the gradient AS, which cannot detect the actual distance in the near and near directions.
- the force AS may have a small gradient AS when the measurement position enters the progressive part.
- the distance traveled from the distance portion is calculated from the prism power.For example, from the distance portion to 1 Omm, the number of arrows of the mark 11 lb is 3 or 2, and the distance portion is more than that. Approaching! / ⁇ When it comes, determine the number of arrows based on the slope AS. By reducing the arrow of the mark 11 lb, it is possible to indicate psychologically (sensory) to the examiner that the near part has been approached.
- the force that determines whether the measurement area in the vertical direction has come to the near area is determined by whether the spherical power in the measurement area is below the specified level.
- the addition power gradually changes due to the characteristics of the progressive lens. It can at least be detected that the area is approaching before it reaches the near part.
- the number of arrows of the mark 111c indicating that the lens LE should be moved to the right and the mark 11 Id indicating that the lens LE should be moved to the left is the measurement position corresponding to the optical axis L1.
- the determination is made based on the difference ⁇ C (optical distortion amount) between the minimum value of the column surface power detected in the position and the column surface power stored in the distance measurement.
- ⁇ C optical distortion amount
- the values of C3, C2, and C1 are also pre-designed based on the characteristics of various progressive lenses. In the case of A C ⁇ C3, the number of arrows shall be three, assuming that the measurement area is greatly deviated from the progressive part.
- the number of arrows is set to 2 assuming that the deviation from the progressive part has become smaller.
- the number of arrows is one because the deviation from the progressive part is further reduced.
- Cl> A C it is determined that the measurement region is substantially in the center of the progressive part. Whether the shift is on the left or right side can be determined by determining whether the minimum value of the column surface power detected in the left-right direction is in the left-right direction with respect to the optical axis L1. When the vertical direction is determined to be in the near portion and the column surface power (amount of optical distortion) at the measurement position corresponding to the optical axis L1 becomes the minimum value, the measurement region in the left and right direction is near.
- the examiner moves the lens LE so that the mark 120 is directed toward the mark 101 and follows the guide of the mark 11 la to l 1 Id !, and the number of arrows decreases. Move the lens LE so that
- FIG. 5E is a display example when the shift between the measurement region and the near portion has been reduced. Since the number of the mark 11 la is one, it can be seen that the measurement area is a little closer. Also, since the number of arrows on the mark 111c is one, it can be seen that the lens LE should be moved slightly to the right.
- the current measurement region Is determined to be in the near portion.
- the mark 120 is changed to the thick cross mark 125 as shown in FIG. 5F and displayed so as to overlap the intersection of the mark 101. Thereby, the fact that the alignment to the near portion has been completed is notified. At the same time, it is stored in the measured value force of the near-use part.
- the display position of the mark 120 with respect to the mark 101 is also displayed based on the detection result when the number of the arrow guide marks is determined when both are close to some extent. I have control. This makes it easy to perform alignment using the positional relationship between the mark 101 and the mark 120 as a guide.
- the position of the mark 101 may reach the target mark 120 in some cases. In such a case, the force examiner with the correct operating direction may be anxious or confused about the operating direction, but this configuration eliminates this.
- the display of the marks 11 la to l id was applied at the measurement step of the near portion, but may be applied at the measurement step of the distance portion. That is, for the vertical marks 111a and 11 lb, the gradient is determined from the difference between the maximum value and the minimum value of the spherical power at each measurement position in the vertical direction around the optical axis L1, as in the case of the near portion. Find ⁇ S. The magnitude of this slope A S is compared with the criterion frequency S3, S2, S1 (S3> S2> S1), and the number of arrows is determined. The values of S3, S2, and S1 are determined in advance by design characteristics of various progressive lenses, and may differ from those in the near portion. For the left and right marks 111c and 11 Id, the number of arrows may be determined based on the magnitude of the horizontal prism power.
- the measurement optical system is not limited to one that can simultaneously measure the optical characteristics of a plurality of measurement positions in the measurement region described above, but a set of measurement light beams (same circle) around the measurement optical axis. Even in an optical system that measures the optical characteristics of the lens under measurement using at least three measurement beams located on the circumference), optical characteristics at multiple positions are obtained as the lens moves, and the results are compared as needed. As a result, the gradient of the addition power can be detected, and the display of the arrow guide marks 11 la to l 1 Id as described above can be controlled.
- a moving position detection mechanism for directly detecting the amount of movement of the target lens in the front-rear direction and the left-right direction as described in force US 5682234 (Japanese Patent Laid-Open No. 943101) is used. Since the movement distance accompanying the lens movement is obtained from the output from the movement position detection mechanism, it is necessary to continuously obtain the change in the optical characteristics of the lens along with the calculation of the lens movement distance.
- the gradient of the addition power at a predetermined moving distance can be obtained.
- the number of arrows can be determined based on the same idea as described above.
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Abstract
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Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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CN2005800284163A CN101006333B (zh) | 2004-08-23 | 2005-08-23 | 透镜检测仪 |
US11/658,181 US7764364B2 (en) | 2004-08-23 | 2005-08-23 | Lens meter for measuring optical characteristics of a lens |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2004-242946 | 2004-08-23 | ||
JP2004242946A JP4920181B2 (ja) | 2004-08-23 | 2004-08-23 | レンズメータ |
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WO2006022253A1 true WO2006022253A1 (ja) | 2006-03-02 |
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PCT/JP2005/015262 WO2006022253A1 (ja) | 2004-08-23 | 2005-08-23 | レンズメータ |
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US (1) | US7764364B2 (ja) |
JP (1) | JP4920181B2 (ja) |
KR (1) | KR101213994B1 (ja) |
CN (1) | CN101006333B (ja) |
WO (1) | WO2006022253A1 (ja) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102010010340B4 (de) * | 2010-03-04 | 2013-11-28 | Schneider Gmbh & Co. Kg | Messanordnung zum Vermessen eines Brillengestells |
JP2011232722A (ja) * | 2010-04-28 | 2011-11-17 | Terajima Shigeru | 特殊プリズム計算方法 |
JP5862139B2 (ja) * | 2010-09-30 | 2016-02-16 | 株式会社ニデック | レンズメータ及び単焦点レンズ評価用プログラム |
JP5750361B2 (ja) * | 2011-11-11 | 2015-07-22 | 日本電信電話株式会社 | 作業位置誘導装置及びその誘導方法 |
JP6312800B2 (ja) * | 2014-02-28 | 2018-04-18 | ホヤ レンズ タイランド リミテッドHOYA Lens Thailand Ltd | レンズ検査装置、および眼鏡レンズの製造方法 |
KR101628217B1 (ko) | 2014-12-30 | 2016-06-08 | 유니코스(주) | 렌즈미터의 누진 렌즈 측정방법 |
CN105300667B (zh) * | 2015-11-13 | 2018-01-23 | 浙江工业大学 | 一种硬膜压贴三棱镜镜片棱镜度检测方法 |
JP6637561B1 (ja) * | 2018-09-25 | 2020-01-29 | 株式会社レクザム | レンズメーターにおける近点誘導マークの表示手段 |
CN112880984A (zh) * | 2021-03-08 | 2021-06-01 | 重庆远视科技有限公司 | 透镜焦度计的测量导示方法、装置、设备及存储介质 |
Citations (5)
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JPS61251733A (ja) * | 1985-04-30 | 1986-11-08 | Nippon Kogaku Kk <Nikon> | 自動レンズメ−タ |
JPH01135344U (ja) * | 1988-03-05 | 1989-09-18 | ||
JPH0943099A (ja) * | 1995-07-27 | 1997-02-14 | Nidek Co Ltd | レンズメ−タ |
JPH10104119A (ja) * | 1996-09-30 | 1998-04-24 | Topcon Corp | レンズメーター |
JP2000266639A (ja) * | 1999-03-15 | 2000-09-29 | Tomey Corp | レンズメータ |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
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US3880525A (en) | 1974-05-08 | 1975-04-29 | American Optical Corp | Method and apparatus for determining the refractive characteristics of a lens |
NL8702391A (nl) * | 1987-10-07 | 1989-05-01 | Elephant Edelmetaal Bv | Werkwijze voor het met behulp van een cad-cam systeem vervaardigen van een dentaalkroon voor een gebitspreparatie. |
US5682234A (en) * | 1995-07-27 | 1997-10-28 | Nidek Co., Ltd. | Lens meter |
JP3387701B2 (ja) | 1995-07-31 | 2003-03-17 | 株式会社ニデック | レンズメ−タ |
US5910836A (en) | 1996-09-30 | 1999-06-08 | Kabushiki Kaisha Topcon | Lens meter |
JPH11211617A (ja) * | 1998-01-22 | 1999-08-06 | Topcon Corp | レンズ特定装置 |
JP3663065B2 (ja) * | 1998-10-20 | 2005-06-22 | 株式会社トーメーコーポレーション | レンズメータ |
JP5362159B2 (ja) * | 2001-09-04 | 2013-12-11 | 株式会社ニデック | レンズメータ |
-
2004
- 2004-08-23 JP JP2004242946A patent/JP4920181B2/ja not_active Expired - Lifetime
-
2005
- 2005-08-23 KR KR1020077006432A patent/KR101213994B1/ko active IP Right Grant
- 2005-08-23 WO PCT/JP2005/015262 patent/WO2006022253A1/ja active Application Filing
- 2005-08-23 US US11/658,181 patent/US7764364B2/en active Active
- 2005-08-23 CN CN2005800284163A patent/CN101006333B/zh active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS61251733A (ja) * | 1985-04-30 | 1986-11-08 | Nippon Kogaku Kk <Nikon> | 自動レンズメ−タ |
JPH01135344U (ja) * | 1988-03-05 | 1989-09-18 | ||
JPH0943099A (ja) * | 1995-07-27 | 1997-02-14 | Nidek Co Ltd | レンズメ−タ |
JPH10104119A (ja) * | 1996-09-30 | 1998-04-24 | Topcon Corp | レンズメーター |
JP2000266639A (ja) * | 1999-03-15 | 2000-09-29 | Tomey Corp | レンズメータ |
Also Published As
Publication number | Publication date |
---|---|
JP4920181B2 (ja) | 2012-04-18 |
CN101006333B (zh) | 2010-09-22 |
CN101006333A (zh) | 2007-07-25 |
US7764364B2 (en) | 2010-07-27 |
US20080291433A1 (en) | 2008-11-27 |
JP2006058248A (ja) | 2006-03-02 |
KR101213994B1 (ko) | 2012-12-20 |
KR20070053289A (ko) | 2007-05-23 |
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