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Class Information
Number: 250/201.5
Name: Radiant energy > Photocells; circuits and apparatus > Photocell controls its own optical systems > Automatic focus control > Active autofocus > With optical storage medium; e.g., optical disc, etc.
Description: Subject matter in which the image is formed on the surface of an optical information storage or retrieval medium, e.g., an optical disc.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7435934 |
Optical pickup apparatus which is compatible with multiple types of media |
Oct. 14, 2008 |
| 7435936 |
Light analyzer device and method for detecting objects utilizing the light analyzer device |
Oct. 14, 2008 |
| 7432487 |
Device for correcting output of optical pickup |
Oct. 7, 2008 |
| 7423246 |
Analysis apparatus and analysis disc used for the same |
Sep. 9, 2008 |
| 7408143 |
Previous amplifier circuit, light-receiving amplifier circuit, and optical pickup apparatus having grounded emitter amplifier circuits each with a grounded emitter transistor |
Aug. 5, 2008 |
| 7405383 |
Optical pickup device having three light sources with a holographic element for directing diffraction light to photodetectors |
Jul. 29, 2008 |
| 7405386 |
Light receiving device for reading an optical medium with reducing influence of dark current and stray light performance |
Jul. 29, 2008 |
| 7394050 |
Method of vertical deviation disc detection |
Jul. 1, 2008 |
| 7394049 |
Optical disk apparatus and pickup unit |
Jul. 1, 2008 |
| 7378627 |
Semiconductor light receiving element and optical pick-up device having the semiconductor light receiving element |
May. 27, 2008 |
| 7358470 |
Optical pickup |
Apr. 15, 2008 |
| 7358471 |
Optical head device |
Apr. 15, 2008 |
| 7348529 |
Optical device and optical pickup device |
Mar. 25, 2008 |
| 7348548 |
Image forming apparatus and image forming method |
Mar. 25, 2008 |
| 7345266 |
Optical medium judging method for avoiding the collision of an objective lens with a disk |
Mar. 18, 2008 |
| 7319221 |
Light-receiving device, optical pickup, and optical disc apparatus |
Jan. 15, 2008 |
| 7301862 |
Optical disc drive having tilt controlled objective lens and optical disc |
Nov. 27, 2007 |
| 7282684 |
Optical pickup apparatus |
Oct. 16, 2007 |
| 7276680 |
Control unit and optical disk drive including the control unit |
Oct. 2, 2007 |
| 7251087 |
Lens driving apparatus and image pick-up apparatus including the same |
Jul. 31, 2007 |
| 7247826 |
Optical pickup apparatus |
Jul. 24, 2007 |
| 7247827 |
System for measurement of the height, angle and their variations of the surface of an object |
Jul. 24, 2007 |
| 7223952 |
Optical sensing head and method for fabricating the sensing head |
May. 29, 2007 |
| 7202464 |
Optical bench, slim optical pickup employing the same and method of manufacturing the optical bench |
Apr. 10, 2007 |
| 7199343 |
Spatial optical memory |
Apr. 3, 2007 |
| 7177246 |
Optical disk drive focusing apparatus using sum signal |
Feb. 13, 2007 |
| 7164624 |
Optical scanning device |
Jan. 16, 2007 |
| 7124441 |
Method and apparatus for securely associating an optically readable memory with a user machine |
Oct. 17, 2006 |
| 7109462 |
Light beam output control apparatus, optical pickup apparatus, light beam emission control method and computer-readable recorded medium in which light beam emission control program is recorded |
Sep. 19, 2006 |
| 7102836 |
Objective lens driving apparatus for optical pickup |
Sep. 5, 2006 |
| 7078674 |
Optical pickup device emitting linear polarized light with a 45 degree phase difference |
Jul. 18, 2006 |
| 7067784 |
Programmable lens assemblies and optical systems incorporating them |
Jun. 27, 2006 |
| 7064308 |
Method of and apparatus for adjusting the focus position of an optical pickup |
Jun. 20, 2006 |
| 7057146 |
Optical pickup having a diffraction grating and a hologram element |
Jun. 6, 2006 |
| 7042817 |
Aberration detection device, aberration detection method, and optical pick-up device for controlling spherical aberration |
May. 9, 2006 |
| 7019273 |
Optical information recording employing improved recording power control scheme |
Mar. 28, 2006 |
| 7020063 |
Optical pickup |
Mar. 28, 2006 |
| 7019280 |
Apparatus for detecting the tilt of a light reflector relative to the optical axis of input light |
Mar. 28, 2006 |
| 6982405 |
System and method for using a photodiode to self-test an optical drive |
Jan. 3, 2006 |
| 6974939 |
Optical recording/reproducing apparatus for multi-layer recording media that alleviates adverse effect of spherical aberration beyond compensation by changing the numerical aperture of combine |
Dec. 13, 2005 |
| 6963409 |
Optical position measuring device |
Nov. 8, 2005 |
| 6956192 |
Optical head and optical disk drive |
Oct. 18, 2005 |
| 6946634 |
Optical pickup device |
Sep. 20, 2005 |
| 6946633 |
Optical disc apparatus and method for controlling focus of the same |
Sep. 20, 2005 |
| 6943335 |
Signal processing apparatus having a specific limb darkening correction |
Sep. 13, 2005 |
| 6927375 |
Optical element, optical head and optical information processor |
Aug. 9, 2005 |
| 6867408 |
Erasable/rewritable optical data storage with photorefractive polymers |
Mar. 15, 2005 |
| 6842652 |
Image capture device |
Jan. 11, 2005 |
| 6828537 |
Optical scanning device |
Dec. 7, 2004 |
| 6822210 |
Data recording apparatus including light intensity control device |
Nov. 23, 2004 |
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