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公开(公告)号：CA2150830C
公开(公告)日：1998-05-26
申请号：CA2150830
申请日：1995-01-30
Applicant: LEICA INC
Inventor： LUCE DAVID A , PERCIVAL CHRISTOPHER J
Abstract: A polar or vector display (26) provides an operator of an optical instrument with a symbolic instruction regarding the direction and amount of motion required to center an optical element (16) on a chosen path.
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公开(公告)号：CA2131920C
公开(公告)日：1996-12-10
申请号：CA2131920
申请日：1994-06-13
Applicant: LEICA INC
Inventor： LUCE DAVID A , GROLMAN BERNARD
Abstract: A device for testing visual contrast sensitivity is disclosed whereby the contrast between a vectographically polarized test symbol (12, 22a) and a reference background (24) may be continuously varied by changing the direction of polarization (16') of a polarization analyzer (16) situated along the test axis (8'). The invention is practiced by providing a chart projector or a conventional refractor with a rotatable analyzer (16).
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公开(公告)号：CA2201761A1
公开(公告)日：1996-05-09
申请号：CA2201761
申请日：1995-10-13
Applicant: LEICA INC
Inventor： LUCE DAVID A , MILLER DONALD E
IPC: A61B3/10
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公开(公告)号：CA2201759A1
公开(公告)日：1996-05-09
申请号：CA2201759
申请日：1995-10-13
Applicant: LEICA INC
Inventor： LUCE DAVID A , ZELVIN JOSEPH L
Abstract: The disclosure relates to a joystick for positioning a test axis of an ophthalmic instrument relative to an eye of a patient. In a preferred embodiment, the joystick includes an actuator extending therefrom and arranged to alternately engage a pair of motor control switches incident to slight rotation of the joystick in opposite directions, thereby activating a motor drive to raise and lower the test axis.
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公开(公告)号：AU1833695A
公开(公告)日：1995-09-04
申请号：AU1833695
申请日：1995-01-30
Applicant: LEICA INC
Inventor： LUCE DAVID A , PERCIVAL CHRISTOPHER J
Abstract: A polar or vector display provides an operator of an optical instrument with a symbolic instruction regarding the direction and amount of motion required to center an optical element on a chosen path.
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Patent Agency Ranking
公开(公告)号：DE68912444T2
公开(公告)日：1994-05-11
申请号：DE68912444
申请日：1989-08-01
Applicant: LEICA INC
Inventor： LUCE DAVID A , KRSTANOVIC SRDJAN
Abstract: An optical alignment system using at least one CCD array (28) for positioning an instrument in a chosen relationship to an object (20) is disclosed. Means for "electronically" aligning the optical components and providing a macro view of the object on a CRT (66) without additional illumination are also disclosed. Alignment may be achieved manually, if the operator observes the position of symbols on the CRT that move in response to movement of the instrument by the operator using a joystick (6), or automatically using information provided by the array.
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公开(公告)号：ES2049325T3
公开(公告)日：1994-04-16
申请号：ES89307824
申请日：1989-08-01
Applicant: LEICA INC
Inventor： LUCE DAVID A , KRSTANOVIC SRDJAN
Abstract: An optical alignment system using at least one CCD array (28) for positioning an instrument in a chosen relationship to an object (20) is disclosed. Means for "electronically" aligning the optical components and providing a macro view of the object on a CRT (66) without additional illumination are also disclosed. Alignment may be achieved manually, if the operator observes the position of symbols on the CRT that move in response to movement of the instrument by the operator using a joystick (6), or automatically using information provided by the array.
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公开(公告)号：DE68912444D1
公开(公告)日：1994-03-03
申请号：DE68912444
申请日：1989-08-01
Applicant: LEICA INC
Inventor： LUCE DAVID A , KRSTANOVIC SRDJAN
Abstract: An optical alignment system using at least one CCD array (28) for positioning an instrument in a chosen relationship to an object (20) is disclosed. Means for "electronically" aligning the optical components and providing a macro view of the object on a CRT (66) without additional illumination are also disclosed. Alignment may be achieved manually, if the operator observes the position of symbols on the CRT that move in response to movement of the instrument by the operator using a joystick (6), or automatically using information provided by the array.
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公开(公告)号：EP0789529A4
公开(公告)日：1999-04-07
申请号：EP95938709
申请日：1995-10-13
Applicant: LEICA INC
Inventor： LUCE DAVID A , MILLER DONALD E
CPC classification number: A61B3/145 , A61B3/0075 , A61B3/152
Abstract: An alignment override control for effecting automatic vertical alignment of a test axis of an ophthalmic instrument (10) with the center of an eye is disclosed. The test axis is associated with optical alignment means of the instrument vertically movable by an elevation motor controlled by a motor drive. A joystick (24) and a pair of directional switches (28a, 28b) are connected to the motor drive for manual positioning of the test axis. When the eye comes within a field of view defined by the optical means, the override control disconnects the switches and automatically signals the elevation motor to effect automatic alignment using signal information originating from the optical means.
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公开(公告)号：EP0673221A4
公开(公告)日：1996-01-10
申请号：EP94919449
申请日：1994-06-13
Applicant: LEICA INC
Inventor： LUCE DAVID A , GROLMAN BERNARD
Abstract: A device for testing visual contrast sensitivity is disclosed whereby the contrast between a vectographically polarized test symbol (12, 22a) and a reference background (24) may be continuously varied by changing the direction of polarization (16') of a polarization analyzer (16) situated along the test axis (8'). The invention is practised by providing a chart projector or a conventional refractor with a rotatable analyzer (16).
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