CN102592615A - Low-cost video-disc machine - Google Patents
Low-cost video-disc machine Download PDFInfo
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- CN102592615A CN102592615A CN2012100468525A CN201210046852A CN102592615A CN 102592615 A CN102592615 A CN 102592615A CN 2012100468525 A CN2012100468525 A CN 2012100468525A CN 201210046852 A CN201210046852 A CN 201210046852A CN 102592615 A CN102592615 A CN 102592615A
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Abstract
The invention discloses a low-cost video-disc machine. The video-disc machine is internally provided with a multi-wavelength laser (1), a single-receiving-region receiver (2), a spectroscope (3) and a light-path structure rear end (4), wherein the single-receiving-region receiver (2), the spectroscope (3) and the light-path structure rear end (4) are collinear; and the laser ejecting directions of the multi-wavelength laser (1) are vertical to the lines on which the single-receiving-region receiver (2), the spectroscope (3) and the light-path structure rear end (4) are located, and are intersected at the spectroscope (3). The low-cost video-disc machine is characterized in that an optical grating (5) is arranged between the multi-wavelength laser (1) and the spectroscope (3), or between the spectroscope (3) and the light-path structure rear end (4), or between the single-receiving-region receiver (2) and the spectroscope (3). The low-cost video-disc machine has the advantages that the structure is simple, the design is ingenious, and by utilization of the principle of light splitting of the optical grating, under the condition of using the multi-wavelength laser capable of emitting multi-wavelength light, the signal receiving end can realize signal reception only by adopting the single-receiving-region receiver.
Description
Technical field
The present invention relates to a kind of video disc player, particularly a kind of low-cost video disc player.
Background technology
Existing CD player has the function that can read multiple CD (like BD/DVD/CD), in order to satisfy this function, just a plurality of laser instruments need be set in video disc player, and the multiple-wavelength laser of the light that can launch the multi-wavelength perhaps is set.Adopting under the luminous situation of multiple laser instrument,,, cause cost higher because number of lasers is many though the light signal receiving end can adopt single receiving area; And if employing can be launched the multiple-wavelength laser of multi-wavelength's light; Because the luminous point of each wavelength can't overlap; Receive processing thereby cause signal receiving end need be divided into a plurality of receiving areas, improved the cost of signal receiving end again, can't reach the purpose that reduces cost equally.Therefore the video disc player that needs a kind of novel low-cost that can address the above problem now.
Summary of the invention
The present invention is in order to solve the above-mentioned deficiency of existing in prior technology; Propose a kind of simple in structure; Design ingenious; Utilize the principle of grating beam splitting, under the situation of the multiple-wavelength laser that uses the light that can launch the multi-wavelength, signal receiving end only adopts the receiver of single receiving area just can realize the low-cost video disc player that signal receives.
Technical solution of the present invention is: a kind of low-cost video disc player; In video disc player, be provided with multiple-wavelength laser 1, single region of acceptance receiver 2, spectroscope 3 and light channel structure rear end 4; Multiple-wavelength laser 1 is launched laser beam; Be emitted to light channel structure rear end 4 through spectroscope 3; Prolong original optical path after after assembling in the light path of rear end, reading CD signal and return, be transmitted through receiving area 2, it is characterized in that through spectroscope 3: between described multiple-wavelength laser 1 and the spectroscope 3 or between spectroscope 3 and the light channel structure rear end 4, or single region of acceptance receiver 2 and spectroscope 3 between be provided with grating 5.
The present invention compares with prior art, has following advantage:
The video disc player of this kind of version; It is simple in structure; Design ingeniously, it fully takes into account the existing existing practical problems of video disc player that can read multiple CD, promptly in order to satisfy the requirement that can read multiple CD; The situation of a plurality of laser instruments or a plurality of receiving ends need be set, and this situation causes the present video disc player that can read multiple CD to control cost well.Video disc player of the present invention is through between multiple-wavelength laser and spectroscope; Perhaps between spectroscope and light channel structure rear end; A grating perhaps is set between single region of acceptance receiver and spectroscope; This grating can be to the adjustment of different directions light beams of different wavelengths travel direction and beam split ratio; Let the light beam that penetrates unite, realize only adopting single region of acceptance receiver of single receiving area just can the purpose of the intact reception of multiple light beams of different wavelengths signal have been reduced the manufacturing cost of video disc player widely.Therefore we can say that it has possessed multiple advantage, be particularly suitable for applying in the manufacturing, production industry at video disc player that its market outlook are very wide.
Description of drawings
Fig. 1 is the structural representation of conventional light path.
Fig. 2 is the structural representation of the embodiment of the invention one.
Fig. 3 is the structural representation of the embodiment of the invention two.
Fig. 4 is the structural representation of the embodiment of the invention three.
Embodiment
Below with accompanying drawings embodiment of the present invention.Like Fig. 1, Fig. 2, Fig. 3, shown in Figure 4: a kind of low-cost video disc player; In video disc player, be provided with multiple-wavelength laser 1, single region of acceptance receiver 2, spectroscope 3 and light channel structure rear end 4; Wherein multiple-wavelength laser 1, spectroscope 3 and light channel structure rear end 4 are on the same straight line; And the laser of multiple-wavelength laser 1 ejaculation direction is vertical each other with the residing straight line of above-mentioned three; And this laser and this straight line cross at spectroscope 3 places; Between multiple-wavelength laser 1 and spectroscope 3, be provided with grating 5 (as shown in Figure 2), perhaps between spectroscope 3 and light channel structure rear end 4, be provided with grating 5 (as shown in Figure 3), perhaps between spectroscope 3 and single region of acceptance receiver 2, be provided with grating 5 (as shown in Figure 4).
After light beam is launched by multiple-wavelength laser 1; Refraction gets into light channel structure rear end 4 under the effect of spectroscope 3; The light channel structure rear end can be converged light beam, reading the information on the CD, and these information is returned through the form of light beam equally; This part light beam is incident upon on single region of acceptance receiver 2 through behind the spectroscope 3, accomplishes reading of information.
The effect that grating 5 is set in light path is to let multiple laser behind process grating 5; Tell the beamlet of certain intensity; And the beamlet that all laser is told all accumulates the identical light beam in the direction of propagation; And propagate along same position, single region of acceptance receiver so only need be set in the region of acceptance can realize that just the signal of multiple different wave length laser beams receives.
Theoretically; Grating 5 can be arranged between multiple-wavelength laser 1 and the spectroscope 3 or between spectroscope 3 and the light channel structure the rear end 4 or any position between spectroscope 3 and the single region of acceptance receiver 2; And according to the difference of grating 5 present positions, the cycle of grating 5 also need be made corresponding adjustment or choose.The intensity of the grating 5 at this place beamlet that also need guarantee to tell simultaneously.
According to the light-dividing principle of grating, directly influence the beam split ratio from the ratio of the phase differential of the light of grating face outgoing and wavelength, and this ratio receives the influence of the gash depth and the wavelength of grating, through the adjustment gash depth, the beam split ratio of different wave length is debugged.
Again according to the grating principle, the cycle of grating is adjusted the beam split angle that can change beamlet, thereby shooting angle is debugged.
Utilizing above 2 points, is example (as shown in Figure 1) with two kinds of wavelength debugging:
The luminous point spacing is A, and luminous point to grating identity distance is from being B, then the beam split angle of grating:
Can release the cycle of grating thus.
The grating cycle according to calculating is adjusted gash depth, according to a wherein not beam split of wavelength, to the principle of the complete beam split of another wavelength; Theoretical according to rectangular raster, the intensity maximum of beamlet can reach 40% of main beam, only uses wherein a branch of of two beamlets; Another bundle light is discarded; Suitably improve the emergent light luminous intensity, a branch of beamlet is wherein overlapped with the main beam of another wavelength, thereby reach the unified purpose of outgoing beam.
Claims (1)
1. low-cost video disc player; In video disc player, be provided with multiple-wavelength laser (1), single region of acceptance receiver (2), spectroscope (3) and light channel structure rear end (4); Multiple-wavelength laser (1) is launched laser beam; Be emitted to light channel structure rear end (4) through spectroscope (3); Prolonging original optical path after after assembling in the light path of rear end, reading CD signal returns; Be transmitted through receiving area (2) through spectroscope (3), it is characterized in that: between described multiple-wavelength laser (1) and the spectroscope (3) or between spectroscope (3) and light channel structure rear end (4), perhaps be provided with grating (5) between single region of acceptance receiver (2) and the spectroscope (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100468525A CN102592615A (en) | 2012-02-28 | 2012-02-28 | Low-cost video-disc machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100468525A CN102592615A (en) | 2012-02-28 | 2012-02-28 | Low-cost video-disc machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102592615A true CN102592615A (en) | 2012-07-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100468525A Pending CN102592615A (en) | 2012-02-28 | 2012-02-28 | Low-cost video-disc machine |
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| CN (1) | CN102592615A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101271698A (en) * | 2007-03-22 | 2008-09-24 | 上海乐金广电电子有限公司 | Optical picker adopting holographic grating |
| CN101477812A (en) * | 2007-11-20 | 2009-07-08 | 三洋电机株式会社 | Optical pickup device |
-
2012
- 2012-02-28 CN CN2012100468525A patent/CN102592615A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101271698A (en) * | 2007-03-22 | 2008-09-24 | 上海乐金广电电子有限公司 | Optical picker adopting holographic grating |
| CN101477812A (en) * | 2007-11-20 | 2009-07-08 | 三洋电机株式会社 | Optical pickup device |
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Application publication date: 20120718 |