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Class Information
Number: 351/242
Name: Optics: eye examining, vision testing and correcting > Eye examining or testing instrument > Subjective type > Including test chart or target > Chromaticity type
Description: Subject matter relating to polychromatic charts or plates used in color deficiency or color sensitivity test, the plates or charts exposing to the viewer s:graphic representations of different particular colors and/or varying intensity.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7607778 |
Optotype presenting apparatus |
Oct. 27, 2009 |
| 7568801 |
Optotype presenting apparatus |
Aug. 4, 2009 |
| 7549751 |
Optotype presenting apparatus |
Jun. 23, 2009 |
| 7379586 |
Color vision characteristic detection apparatus |
May. 27, 2008 |
| 7344250 |
Color presenting method, color sample book, and color presenting apparatus |
Mar. 18, 2008 |
| 7333117 |
Method of compensating colors in image display device for users with color vision deficiency and device of the same |
Feb. 19, 2008 |
| 7264356 |
Techniques for diagnosing and aiding color vision |
Sep. 4, 2007 |
| 7252382 |
Apparatus and method for measuring differences in the transmission of light through a lens of an eye |
Aug. 7, 2007 |
| 7244024 |
Eye target apparatus |
Jul. 17, 2007 |
| 7222964 |
Method and arrangement for optically stimulating the visual system |
May. 29, 2007 |
| 7216984 |
Optometric apparatus |
May. 15, 2007 |
| 7198369 |
Method and device for detecting/correcting color vision and their application |
Apr. 3, 2007 |
| 7128418 |
Color vision deficiency screening test resistant to display calibration errors |
Oct. 31, 2006 |
| 6851809 |
Color vision deficiency screening test resistant to display calibration errors |
Feb. 8, 2005 |
| 6729729 |
Method of testing and corresponding vision aid |
May. 4, 2004 |
| 6331625 |
Photochromic spirofluorenopyran compounds |
Dec. 18, 2001 |
| 6220708 |
Method and device for producing multicolored patterns |
Apr. 24, 2001 |
| 6210006 |
Color discrimination vision test |
Apr. 3, 2001 |
| 6203157 |
Method for testing visual function capable of guaranteeing validity thereof |
Mar. 20, 2001 |
| 5971543 |
Method of measuring metabolic activity employing an anomaloscope |
Oct. 26, 1999 |
| 5883694 |
Method for the improvement of reading skills |
Mar. 16, 1999 |
| 5838423 |
Apparatus for collecting data |
Nov. 17, 1998 |
| 5734459 |
Anomaloscope which can generate different illuminances for test |
Mar. 31, 1998 |
| 5589898 |
Method and system for color vision deficiency correction |
Dec. 31, 1996 |
| 5543867 |
Method and apparatus for the amelioration for visual stress and dyslexia |
Aug. 6, 1996 |
| 5485230 |
Chromatic motion diagnosis system and methods |
Jan. 16, 1996 |
| 5461436 |
Color field test with occlusion of non-tested eye |
Oct. 24, 1995 |
| 5297559 |
Apparatus for testing color vision |
Mar. 29, 1994 |
| 5129720 |
Method and apparatus for examination of visual acuity |
Jul. 14, 1992 |
| 4966453 |
Four-channel anomaloscope |
Oct. 30, 1990 |
| 4940323 |
Light stimulator |
Jul. 10, 1990 |
| 4848898 |
Apparatus for testing color vision |
Jul. 18, 1989 |
| 4798458 |
Anomaloscope |
Jan. 17, 1989 |
| 4765731 |
Solid state color vision testing system |
Aug. 23, 1988 |
| 4365521 |
Device for the fine adjustment in all three directions of space of an instrument arranged on a base |
Dec. 28, 1982 |
| 4285580 |
Color vision perception testing device |
Aug. 25, 1981 |
| 3970376 |
Device for testing color vision |
Jul. 20, 1976 |
| 3947099 |
Solid state color anomaloscope |
Mar. 30, 1976 |
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