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US 5,400,314 AGranted
Optical pickup using a lamp
AssigneeSamsung Electronics Co., Ltd.
InventorChul-woo Lee
Life of this patent
Estimating the term…
Abstract
An optical pickup for use in various optical recording/reproducing apparatus includes a general-purpose lamp producing a wide range of light wavelengths, a converging device for converging the light of the lamp, and a pinhole and color filter for enhancing the temporal/spatial coherence of the light. The lamp radiates light containing the intensity of a laser and spectral distribution characteristic of a laser.
Claims7
An optical pickup comprising:
- a light generator;
- a light emitting portion for convergently emitting light generated by said light generator onto a recording medium;
- and
- a light detector for detecting the light reflected from the recording medium to output an electrical signal, wherein said light generator comprises a lamp for radiating light, means for converging the light generated from said lamp to a point, a hole plate member having a pinhole for transmitting the light converged to the point, and a color filter located adjacent said hole plate member for selectively transmitting a predetermined wavelength of the light passing through the pinhole.
1 more element
Dependencies are inferred from the claim text.