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Browse Prior Art Database

Propeller Device for Cleaning the Objective Lens in Optical Storage Devices

IP.com Disclosure Number: IPCOM000120955D
Original Publication Date: 1991-Jun-01
Included in the Prior Art Database: 2005-Apr-02
Document File: 1 page(s) / 54K

Publishing Venue

IBM

Related People

Engler, EM: AUTHOR [+4]

Abstract

In an optical storage drive, particulate contamination arising from both the environment and internal mechanisms is undesirable. Excessive levels of contamination can adversely affect drive performance. The objective lens is highly sensitive to this contamination.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 100% of the total text.

Propeller Device for Cleaning the Objective Lens in Optical Storage
Devices

      In an optical storage drive, particulate contamination arising
from both the environment and internal mechanisms is undesirable.
Excessive levels of contamination can adversely affect drive
performance.  The objective lens is highly sensitive to this
contamination.

      Disclosed is a method for removing particulate contamination
from the surface of an objective lens which involves the use of blown
air originating from a specially constructed device.  The device
consists of a modified optical disc cartridge, a propeller/ blower
element contained within the cartridge, and a hub to connect the
propeller/blower to the optical drive's pre-existing spindle motor,
and is shown in Figure 1. This assembly can be inserted into a
standard optical drive in precisely the same manner as a cartridge
containing optical media.  The optical drive's spindle motor rotates
the propeller/ blower, thereby causing an airflow through the
cartridge casing and onto the exposed surface of the objective lens.
Forced air cleaning minimizes the possibility of scratching the
objective lens, which is a concern of methods involving rubbing the
lens surface with a cloth or brush as a means of cleaning.

      Disclosed anonymously.