TWI327314B - Integrated holographic read-write system - Google Patents

Description

1327314 IX. Description of the invention: [Technical field to which the invention pertains] The present invention relates to an optical read/write head recorded by a holographic optical image method of an integrated type, and the advantages of the conventional integrated body, the number of optical components, and the like. , reclining === and reduced holographic optical head design.九予圮录媒体 [Previous Technology] The development of optical information storage technology, A is based on the CD system proposed by _ ^ degree, its optical reading head uses 78Qnm f ΝΑ 0.45 focusing objective lens to achieve (4) storage capacity year Since the introduction of the DVD specification, the optical head uses a laser wavelength of 65 〇 nm, with an objective lens of ΝΑ 0.6, which can reduce the spot diameter by half, and the large grain volume to a single-sided single layer of 4.7 GB. Recently, due to the demand for high-definition digital audio and video: the capacity of the existing DVD is no longer sufficient, so the new generation of storage media based on 4〇5nm blue laser has been formulated and has been gradually introduced. For example, Blu-ray Disc (BD) is an objective lens that uses NA 0.85 to achieve a single-sided single-layer 25 GB capacity, or a high-density DVD (HD-DVD) that still maintains a ΝΑ 0.65 objective lens to achieve a capacity of 15 GB. In the future, with the rapid advancement of computer technology, it is imperative to break through the 100GB or even the capacity demand of Tera Byte. However, it is well known that, based on the traditional optical storage technology, the increase in capacity depends on the size of the focused spot, so the laser wavelength of the optical pickup-up (OPU) is Under the control of the objective lens NA, it is extremely difficult to break through the current capacity specification of blue light in the development of laser and objective lens; therefore, various new storage technologies have been widely proposed over the years. For example, a solid immersion lens (SIL) is used to raise the NA value and match the near-field to overcome the diffraction limit, or the surface is plasma-excited by means of the surface of the dish 5 1327314 <4, the layer In order to achieve the near-field reading and writing machine lion super ^==s) r, s, face), or to increase the disc capacity, or change the traditional second-order 1 to t=t recording points into multi-order (muiti_ievei) pit recording points Shape ^ Λ ^ Storage capacity and so on. In most new storage technologies, ihcTU's "hGlGgraphy" holographic data storage ΐ if? datastorage technology has been rapidly becoming popular in recent years, and has been widely recognized as an important development in the future of optical information storage. index.,

—Full-image storage technology is the next generation of high-capacity storage systems with “when potential. Choice. Kelai, many of the creations related to this technology have been widely explored, and] before: will, the process is pushed to - with Miscellaneous products have also been enthusiastically developed. Right k explores holographic technology, which was proposed by D. Gab〇r as early as 1948 (disclosed in Nature Journal, Να 161, PP. 777, 1948), but until 1960 year

In the early days, because of the invention of the laser, pj van Heerden first proposed the theory of holographic data storage for the first 19 years (explained in Applied 〇ptics, 2, No. 4, pp. 393-400, 1963). Developed a technique for storing interference fringes on volumetric media in a three-dimensional space, and estimated that the storage density is proportional to the storage volume and inversely proportional to the wavelength cube (〇CV/;l3), and also proposed as angle A multiplexing method such as wavelength change. However, due to the inability to break through the storage materials and components, it has not been able to make progress for decades, and it is not practical for general commercial products. In the past ten years, due to the development of high molecular organic photopolymer materials, such as semiconductor lasers, thin film transistor liquid crystal devices (TFT-LCD) or digital micromirror components (digital A micro-mirror device, a spatial light modulator (SLM) such as D]V[D), and a complementary metal-oxide semiconductor (CMOS) image sensor. The rapid advancement of optoelectronic component technology, the practical application of holographic storage gradually reveals the dawn' and relies on its three-dimensional space ultra-high storage density and full page parallel mode (non-traditional sequential mode) high-speed access speed, etc. 6 1327314 generation The most potential key reserves are not expected at present - the secret of the storage technology (4) to the development of commoditization, and each of their own propaganda 'the various manufacturers and research units actively and continuously open in the future huge application market opportunities ownership. , step establishment - in the 泎 现 现 豕 , , , , 目前 目前 目前 In In In In In In In In In In In In In In In In In (10)

Division, currently divided into lung μ commodity mosquito = ^ 丨丨 two public system and disc specifications. If you want to _ this: mouth = J as a classification, basically the ancestor used is off-axis type = two 1 = (, Yu Qing 92133 Patent Gazette and Zhou, Vol. 29, Να 12, ΡΡ · 1402-1404, 2004), and 0ptware adopts (collinear) ^ ^ W , , ^ g , , , ^ ^ multlplexing ) to access data (exposure sus7〇85〇25 patent g,, APPlied 0Ρ^ Journal, Vol. 44 , No. 13, pp. 2575-2579

Optical collinear holography is one of all the disc-type holographic storage systems that have been proposed, which is different from traditional off-axis holographic technology. Coaxial holography has many advantages, such as a looser requirement for laser coherence characteristics and the convenience of coaxially aligning reference and data light. In 2005, Optware proposed a full-size versatile disk (HVD) specification and corresponding optical architecture to achieve two-dimensional (2-D) full-page parallel data recording (disclosed in International Symposium on Optical Memory and Optical Data Storage and Applied Optics Journal, v〇l. 45, No 5 PP. 910-914, 2006). This technology ensures compatibility with the CD and DVD systems and provides the practical feasibility of making small and simple holographic optical storage systems. § Qing refers to "1st picture" - the picture is not written by Op^Yare Company 7 1327314 for the HVD 1 Oc, DVD 1 Oa and CD 1 Ob disc coaxial holographic optical 5 buy and write system Optical s buys the write head architecture. It uses two sets of optical paths, one for the green or blue laser 13c holographic read and write system, and the other for the red laser diode (than diode, LD) 13a CD and DVD read and write system. The two optical paths are combined into a light path by a dichroic beam-splitter 15a, and are focused by the same objective lens u after passing through a quarter wave plate (QWP) 14. The green or blue laser 13c outgoing beam is first reflected by the reflective SLM 22a to form an intermediate region of the information beam (informati〇n beam) 25a and the outer ring reference beam 25b, the two beams passing through Qwp 14 and ^ After the mirror 11 is focused on the § recording layer of the disc 10c and interferes with each other, the entire page information displayed on the sjjyj 22aji is recorded on the holographic disc by the interference fringe pattern. When the data is read, the green or blue laser exiting beam is reflected by the SLM 22a, leaving only the modulated reference beam 25b, which is focused on the recording layer of the disc 1 10c after passing through the qwp 14 and the objective lens u, and is originally recorded. The interference fringes are diffracted into a reconstructed information beam 25c and reflected by the reflective layer of the hologram disc 10c to return via the same path. However, since the QWP 14 is passed back and forth twice so that the polarization direction is rotated by 9 degrees, the returned beam is reflected by the polarizing beam-splitter (PBS) 15b to the image sensor 23, and the original recording is completed. The page is read in parallel. To = red light path 18a in addition to providing CD 10b and DVD l〇a data read and write, and provide focus and command servo control for the full-image reading and writing system, its role is the same as traditional light and head, and The signal can be obtained by the photodetector p ^. Since the entire coaxial holographic optical reading and writing system has two sets of optical components and both use separate optical components, the assembly and alignment of the optical heads is not easy to grasp, and the overall manufacturing cost and package size are not easily reduced. 0 In response to the demand for action information and the rapid growth of the information product market, the development of storage devices must be oriented toward a short, light and high-density trend. The miniaturization of CD players plays a key role, with the following: With the 8 1327314 read/write head moving toward simple, lightweight, small size, low cost and easy production, the integrated optical head gradually replaced the traditional optical head. Integrated optical heads have been proposed by W. H. Lee in 1988 (exposure to US Pat. No. 4,731,772) and have been widely used in thin disk drives. It uses a holographic optical element (HOE) to replace optical components such as beam splitters and cylindrical lenses in conventional optical heads, and shortens the distance between the laser diode and the photodetector, so that all The component is compressed in a compact package called an integrated optical module (integrate (i〇pticalunit, I〇u). Please

Referring to "Fig. 2", the illustration shows the basic architecture of (a) a conventional optical pickup and (8) an integrated optical pickup and an optical module. From the figure, we can see that the difference between the optical and the scented silk is different. The biggest material is the same. The integrated optical head is made up of HOE 16 integrated with most beam components. It has become the IGU 21, and the singularity of the brigade and the objective lens 1 constitutes an optical head through simple assembly adjustment, so that the optical head can be easily realized. It is well known that h〇e 16 has a sub-photonic servo bribe recording Zhengxian County, etc., so that the E 16 can not only lower the number of optical components, but also simplify the light. In 2001, H. F. Shih et al. disclosed the design of I〇u with double-neighbors, which is disclosed in US Pat. No. 6,211,511. Please refer to "The third major difference is that I〇U 21 contains dual-wavelength LD ( (4) * Two laser lions - ^, or a single wavelength LD) to form a single-wavelength dual-wavelength I0U21, using this dual-wavelength I〇U21 can get a more compact frequency single secret The dual-wavelength DV 〇 optical heading-one aperture must have two sets of optical, and the sub-bee, and has been gradually applied to the reading head of the current thin-type 雔 wavelength DVD player. In combination with the above description, it can be seen that the omni-directional data storage is to increase the capacity density. The 全 全 同 又 又 又 又 又 又 另 另 另 另 另 另 另 另 另 另 另 另 另 另 另 另 另 另 另 另 另 另 另 另The body of the storage system 9 t can improve the stability of the system and the cost of the bribe. Therefore, combining the advantages of both, it becomes the main purpose of the creation of the present invention. [Summary of the Invention] In the holographic data storage technology, there are many optical coaxial Hi The advantages and the characteristics of the backward compatible old sequential storage medium, & IOU is the key to the miniaturization of traditional optical reading and writing age. Therefore, the optical proposed by 0pt bribe System architecture? Under the characteristics of the coaxiality, 'We developed the I〇u technology for applying dual-wavelength DVD to the design of the full-image optical head system, and integrated the two optical paths into a single module package. The invention of the integrated holographic reading and writing system. The invention proposes a plurality of different design architectures for the purpose of integrating the coaxial holographic reading and writing system and reversing the old CD and DVD discs. A structure in which a green or blue laser disk for reading and writing a holographic disc is used to read and write a DVD. The red laser is merged into a same optical path through a two-color spectroscope and is matched with a polarization selective HOE. The SLM and the outer annular polarizer form an I〇u, and the module includes an image sensor for reconstructing the image of the hologram and the optical detector for reading the DVD and the entire module. Then with the collimating lens: QWP and the objective lens are combined into a coaxial hologram The second architecture is to replace the laser arrangement in the first architecture by two laser side-by-side methods, and the two-color spectroscope can be omitted to simplify the number of components of 101; The problem of reverse compatibility of the disc, the present invention further proposes a third and fourth design architecture that can integrate IOUs of multiple wavelengths to achieve reading and writing of DVD, CD or high-density Blu-ray discs other than holographic discs. Etc. = The current design uses a transmissive SLM to modulate the information beam and the reference beam 'further'. The present invention also proposes a fifth design "architecture using a reflective SLM. Details and Techniques of the Invention The following description is given in conjunction with the drawings: 1327314 [Embodiment] Referring to "Fig. 4", a first embodiment of the design of the integrated coaxial full read/write system proposed by the present invention is shown. It uses the IOU 21 technology to integrate most of the optical components of the optical system into a single module, so that it has a streamlined junction called a holographic integrated optical unit 21a. The module adopts the green or blue laser 13c as the light source for reading and writing of the holographic storage system, and uses the red LD 13a as the light source for the servo or CD/DVD reading and writing of the omnidirectional optical disc. The two p-polarized laser exit beams are merged into the same optical axis after entering the micro dichroic beam splitter Ba, and a polarization-selective HOE 16a is designed in the module, which is only for § The polarized light has a diffractive characteristic, so that the incident beam of the two lasers is completely penetrated. For data writing of the holographic storage system, the green or blue laser 屮 = the information beam 25a of the reference beam 25b 盥 ^ circle that is modulated by the penetrating SLM 22b, due to the penetrating SLM22b pair of beams The modulation becomes a phase modulation, which changes the polarization direction of the beam according to the pattern information presented on the SLM 22b to ρ·polarization or s-polarization. The reference beam 25b passes through only the external ones. After the outer region of the outer-ring polarizer 26, only the portion of the polarized light can pass, and the pattern effect of the amplitude modulation is generated, and the other information beam 25a does not have the polarization through the outer annular polarizer 26. After the inner zone is not changed by any polarization characteristics, it is completely passed, and the two beams are focused together on the inner recording layer of the hologram disc 1〇c after collimating the clock qwp 14 and the focusing objective η, two focusing and only Beams having the same polarization characteristics interfere with each other to produce interference fringes for writing onto the holographic disc l〇c, which is carried by the information beam from one of the inner circular regions of the SLM 22b. For the holographic storage system, when the green or blue laser exit beam passes through the penetrating SLM22b, the SLM inner circle does not make any modulation effect on the information beam 25a, so that the information beam 25a passing through is presented. - the direction of polarization, while the reference beam 25b of the outer loop region is still in the modulation mode when the data was originally written' and only p-polarized light remains after passing through the outer annular polarizer 26. The information beam 25a and the reference beam 25b are focused on the same path to 1327314

j first discs are received _ on the ride, but the polarization directions of the two beams are 妗ΐ = no interference, and the reference beam 25b is the same as the original recorded interference, and is reconstructed to be the same as the original writer. The information beam 25a is accompanied by a reconstructed information beam 25c containing the entire shirt image, and returns to the original path. Since the beam goes back twice through the QWP Η, it reaches the directional direction when it reaches the polarized light selectivity H〇E 16a, so it is circulated to the image sensor 23 by the HOE 16a. As for the 2 modulated When the circular information beam 25a enters the disc recording layer, it will also be the first to record the interference fringe, but the beam returned after the diffraction is not in the information light area of the inner circle, and when it is ^HC)E(6) The polarization direction is p-polarized, so it will not be diffracted into the image sensor by the HOE 16a, so it will not interfere with the reconstructed information beam 25C obtained by the reference beam 25b. For reading the hologram disc 10c When the focus and tracking control required for writing, or the reading and writing of the DV compact disc l〇a, the red light LD 13a of the P·polarized beam is directly passed through all the components and then focused on the disc by the objective lens, and Returned to H〇E 16a by reflection. Since the polarization direction is changed when returning, H〇E 16a diffracts the returned red light beam onto PD 17a and introduces the servo signal and the read signal of the dvd optical disc l〇a Since the entire system uses a single H0E16a, its diffraction pattern can be made by binary optics (b Inary optics technology, which is designed with its optical wavefront as phase polynomin as (1), and needs to be optimized to match the correct beam position and light incident on image sensor 23 and PD 17a. Point shape. ^x, y, = H, yn m / π = 0 η = 0 / / Since the image sensor 23 and the PD 17a are placed on both sides of the optical axis, they will receive from HOE 16a is a first-order and a negative-order laser light that is diffracted. The two diffraction orders are respectively introduced into the phase of the conjugate, which is also 丨0, less) =- 么, 0, _y) (2) 凊5a"" used in the omni-directional IOU 21a is a transmissive slm 22b' having an inner circular modulation region 22c and an outer loop modulation region 22d for respectively 12 25a and a reference beam 25b. Please also refer to "Fig. 5b". The ring-shaped polarizer 26 outside the Gushu is used with the SLM22b to adjust the phase to the external polarization zone _ amplitude modulation effect of the annular polarizer 26. The inner region 26a of the outer annular polarizer 26 does not have a characteristic of being biased, so that the information light Ι/ϋίΐ modulated by the SLM 22b has only been penetrated? The polarized reference beam 25b can also polarize the outer portion of the polarizer 26 to the active region 26b, so that the reference light polarized on the disc interferes with the (four) light beam. The design of the system of the invention is based on the simulation of the system proposed by the present invention. Figure 6a shows the optical path of the full if using the 532 nm laser as the light source, which is equivalently shown. Write the light path on the video disc. Please also refer to "Fig. 6b". The front beam at the surface of 22b is represented by a dot pattern distribution, and there is a region of the bead beam 25a and the reference beam 25b, and must match the effective element of the M 22b.丨) area. Please refer to "The 532 nm laser is used as the light _ holographic storage system in the optical path diagram when reading the stored data" and the reconstructed information beam 25c is broken. The HOE 16a is diffracted to the image sensor 23 in a negative first order. Please refer to "7b f", the pattern of the reconstructed information beam 25 〇 on the image sensor 23 = cloth 2 should correspond to the "6b" write information beam area ^. It is obvious that there is almost no distortion of the pattern in the central area, and generation (6) is feasible for the reconstructed information beam 25c to be diffracted to the image sensor 23 2 j. Please refer to "Fig. 8a", which is another - using (10) fine laser as the light source of the forest simulation, for the holographic CD-ROM control DVD reading and writing full of peaches. The return beam of the beam is diffracted by the HOE 16a^ to the front of the pD丨7. This simulation is similar to that of the general optical head system. Please refer to "8b", which is the simulated focus error signal (so-called s-(4)'. This step further convinced us that the HOE 3 architecture can meet all the requirements of two different laser wavelength systems. 1327314 Since the image sensor 23 receives the beam around the HOE 16a, all the pixels of the image must be accurately detected. Therefore, the various aberrations should be avoided as much as possible. Please refer to "Fig. 9" for the same shot. The image sensor 23 is tilted by a specific angle | coma aberration, etc., as well as the coma aberration image, which shows the integrated coaxial side-by-side arrangement of the present invention. Two:: ====Construction_Two-color spectroscope 15a' is more simplified. Refer to "11th picture", JL disk "stem" 〇图士 a. J sensor 23 placed in the reconstructed information beam "Restrictions and The arrangement position is more flexible, and the second embodiment of the integrated coaxial body proposed by the present invention is different from the part 13a of the first embodiment to enable two types of daily emission (five). Wavelength dual-wavelength laser, the main purpose is to produce 650nm 780nm two kinds of laser light to reverse read and write DVD discs 1〇a and cd discs ljb' and 5 shells to write full-image discs 1〇c green or blue light path design with the aforementioned first, example architecture. In addition, 'the dual-wavelength laser component i3d is not limited to 650nm and 780nm wavelengths, but also 65〇nm and 4〇5nm,” reverse, write DVD disc M l〇a and high-density Blu-ray disc Ships. = Refer to Figure 3, which illustrates a fourth embodiment of the design of the integrated coaxial holographic read and write system proposed by the present invention. Further advantageous (5) combining three or four lightning wavelengths The same optical path can be composed of a green or blue laser element 13c of the disc 10c, a 650 nm laser element 13a for reading and writing the DVD disc i〇a, and a 405 nm laser element 13e for reading and writing the high-density Blu-ray disc 1〇d. A three-wavelength full-image reading and writing system, or a 1327314 650nm laser element 13a with a dual-wavelength (four) component (9) - the full-image reading and writing secret, the purpose is to reverse compatibility of various wavelengths, please refer to "Fig. 14" 'The fifth implementation of the design of the image writing system proposed by the present invention For example, it uses the reflective type SL = to replace the penetrating SLM22b used in the above various creations. The green piece 13c $ s-polarized outgoing light is incident on the SLM 22a, and the _ 22^^ is reflected by the 2 illuminating light * 25a and reference The beam says 'Because the beam is s·polarized, it will be deflected by H0£16a and merged with the red LD 13a polarized beam. _ _ _ _ _ _ _

After Qwp u, the p-polarization direction is present, so it will not be penetrated by the H〇E-shirt and passed through the two-color spectroscope and received by the image sensor 23. As for the red, the operation situation is similar to the above-described first embodiment, so it is not discussed. The reflective SLM 22a of the present invention can also be extended to the applications of the second to fourth embodiments described above, all within the spirit of the present invention. According to the basic spirit of the present invention, in addition to exposing a variety of integrated design architectures, it is also possible to promote the materials and applications of the integrated literary reading and writing to the various wavelengths of reading and writing heads. Light ^ data read and write and what kind of f test long domain strong.

Although the present invention has been described in its preferred embodiments, it is not intended to be limited thereto, and it is obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention. Bao Fu's application for full-time _ define the scales. _ 围田视视 [Simple diagram of the diagram] Figure 1? There is a well-known _ holographic read and write Wei optical optical head optical path basic architecture. Figure 2a shows the basic structure of the optical path of the conventional conventional optical pickup. Figure 2b is a basic structure of an optical path of a conventional integrated optical pickup. Figure 3 is the basic structure of the optical path of the conventional dual-wavelength integrated optical module and the dual-wavelength/optical read 15 1327314 write head. Fig. 4 is a diagram showing the basic structure of the optical path of the accumulation _ hologram of the present invention. The example of the specific poverty-stricken example of the general brother: ",,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, Physical knowledge

In the 6th, the n-th image of the frequency of the f (four) is read as n (four) - when the data is written on the hologram disc, in the SLM table = the case distribution. You call it a special beam bitmap. Figure 7a is an integrated optical reading and writing system of the present invention. The optical path simulation of the item is recorded on a holographic disc. & Example 7b is a first embodiment of the integrated coaxial holographic reading and writing system of the present invention. When reading and recording on a hologram disc, the reconstructed information beam returns to the beam lattice on the surface of the sensor. Pattern distribution. Figure 8a is a first embodiment of the integrated coaxial holographic reading and writing system of the present invention

Light and path simulations for the control of a omni-directional disc or the reading and writing of a DVD. Fig. 8b is a first embodiment of the integrated coaxial holographic reading and writing system of the present invention. The focus error signal is simulated when the servo control of the hologram disc or the DVD reads and writes data. Figure 9 is a first embodiment of the integrated coaxial full-image reading and writing system of the present invention. The basic structure of the optical path for changing the image sensor arrangement. Figure 10 is a diagram showing the basic structure of an optical path of a second embodiment of the integrated coaxial holographic reading and writing system of the present invention. The πth figure is the second embodiment of the integrated coaxial holographic reading and writing system of the present invention. The basic structure diagram of the optical path for changing the position of the image sensor. 16 1327314 Fig. 12 is a diagram showing the basic structure of the optical path of the third embodiment of the integrated coaxial holographic reading and writing of the present invention. Figure 13 is a diagram showing the basic structure of the optical path of the integrated coaxial holographic reading and writing system of the present invention. Fig. 14 is a diagram showing the basic structure of an optical path of a fifth specific example of the integrated coaxial holographic reading and writing system of the present invention. [Main component symbol description]

Optical disc DVD disc CD disc full-image disc high-density Blu-ray disc Objective lens Collimating lens

10 10a 10b 10c 10d 11 12 13 13a 13b 13c 13d 13e 14 15 15a 15b 15c 16 16a laser element 650nm laser element 780nm laser element green or blue laser element dual wavelength laser element 405nm laser element Quarter wave plate (QWP) beam-splitter dichroic beam-splitter polarizing beam-splitter (PBS) tri-color spectroscope holographic optical element ( Holographic optical element, HOE) polarization-selective holographic optical element 17 1327314

17 17a 17b 18 18a 18b 18c 19 20 21 21a 22 22a 22b 22c 22d 23 24 25 25a 25b 25c 26 26a 26b photo-detector (PD) Light detector for 650nm laser 780nm laser Optical detector optical path 650nm optical path 780nm optical path 405nm optical path diffraction grating (diffraction grating) cylindrical lens (integrated optical unit, ίου) integrated image integrated optical module ( Holographic integrated optical unit (SLM) reflective spatial light modulator penetrating spatial light modulator inner circle information beam modulation zone outer ring reference beam modulation zone image sensor (image sensor ) Mirror image storage system light path > information beam reference beam reconstructed information beam outer-ring polarizer (outer-ring polarizer) non-polarization zone -polarizing region) polarized region

Claims (1)

Patent application scope: - an image that does not read or write a full-image handle to generate a specific wavelength different from the first light source for emitting the first light source and the second light source The two light-to-image optical elements are used to make the forward exit pupil: the return light of the medium reflection is deflected by the light detection 7L, and is used for receiving the return light member after being deflected by the holographic optical element, Receiving a return beam deflected by the holographic optical element, /, the beam contains image information of the entire page; space _ weaving, used to illuminate the beam into a reference beam and a slice to filter the polarization direction of the beam, and Converting the beam modulated by the spatial light modulation into amplitude modulation; a convergence lens for collecting the divergent outgoing beam; ===W w is decremented and the polarization of the red ray is one The objective lens is focused to cause the beam to converge and focus on the optical recording medium, and to collect the divergent beam reflected by the optical recording medium. According to the integrated holographic optical pickup of the first aspect of the invention, the first light source generator can generate a green light beam having a wavelength of about 532 nm or a blue light beam having a wavelength of about 405 nm. The integrated holographic optical head according to claim 1, wherein the 1327314 light source generates a red light beam having a wavelength of about 650 nm, an infrared light beam having a wavelength of about 780 nm, or a wavelength of about 4 〇 5 nm. Blue light beam. 4. The integrated holographic optical head according to claim 1, wherein the beam splitter may be a two-color spectroscope for completely reflecting the first light beam emitted by the first light source, and the second light source. The emitted second beam is completely penetrated, or the second light emitted by the second light is completely reflected and the first light beam emitted by the first light source is completely penetrated. 5. If the integrated holographic optical head described in the first paragraph of the patent application is applied, the whole instrument can be polarized, and bribe-polarized. The forward outgoing beam completely passes through and causes the returning light of the other polarization direction to be deflected by a deflection. For example, if you apply for the integrated holographic optical head as described in item 1 of the full-time, = the pendulum method can be tilted - the specific limb, the angle of the range, and the integrated corpus described in the first paragraph of the patent scope. Optical read/write head, beam ΐ = ίί can be the same as the image sensing element on the same side of the exit beam axis, and the image sensing element receives _ holographic optics The step beam 'or the image sensing element is received on the different side of the omni-directional light 32' and the image sensing element a; the different axis is placed on the light detecting element, and the same part is deflected by the diffraction-- And negative - diffraction steps. The integrated image of the illusion of the illusion is used to modulate the information beam 'and the hybrid hologram of the item _ write head, which has partial polarization and 3 domain type The area of the polarization and the outer ring 20 1327314 1 〇 the total holographic optical head described in the first item of the patent range, the 1 focal lens may have a numerical aperture of - or more than one type (11 - Aperture, ΝΑ) characteristics. 1 Bu as claimed in the scope of application of the patented holographic optical head, straight four-wavelength can be omitted, does not affect the overall optical head; 12. If applying for a comprehensive (four) 丨 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ To omit the beam splitter does not affect the overall function of the optical head. 13----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- a light source generator for generating an incident light beam of a specific wavelength; a second light source generator for generating a specific wave incident light beam different from the first light source; a beam splitter for using the first light source and the second light source The two beams emitted are combined; a holographic optical element for passing the forward outgoing beam and deflecting the return light reflected by the recording medium to the image sensing element or the optical detection light The detecting component is configured to receive a returning beam deflected by the holographic optical component, and an image sensing component for receiving the $ after being deflected by the holographic optical component. a beam of light containing a full page of image information; a penetrating spatial light modulator 'for modulating the incident beam into an image-like information beam; and a 〆/, a polarizer' for filtering the beam polarization direction, and The beam modulated by the aforementioned phase modulation by the space controller is converted into amplitude modulation. °° 21 1327314 14 holographic optical access to m胄 or all kinds of optical recording media with different specifications, including: • Light source generator for generating incident light beams of a certain wavelength: The two light sources generate Hx to generate an incident beam of a specific wavelength different from the first light source; the device is configured to generate a specific wave-splitting mirror different from the first and second light sources, and to rotate the first light source, the second light source and the first light output Beam combination; a holographic optical element for passing the forward outgoing beam and deflecting the return light reflected by the learned recording medium to the image sensing element or the optical measuring element; 'a light detecting element' is used Receiving a return beam that is deflected by the holographic optical element; the image sensing element Lx receives a return beam that is deflected by the holographic optical element, the beam of which contains image information of the entire page; a penetrating spatial light modulator, For modulating the incident beam into a reference beam 盥 information beam; a light sheet for filtering the polarization direction of the beam, and converting the beam modulated by the spatial light modulator into amplitude modulation; a convergence lens 'for collecting the divergent outgoing beam; a wavelength plate for changing the polarization state of the incident beam and the reflected beam; and a focal lens for focusing and focusing the optical beam on the optical recording medium, and collecting the divergent beam reflected by the optical recording medium. 15. The integrated light source read/write head according to claim 14, wherein the first light source generator can generate a green light beam having a wavelength of about 532 nm or a blue light beam having a wavelength of about 405 nm. 16. The integrated holographic optical head described in claim 14 of the patent application 22 1327314 ΐ can generate a red light beam with a wavelength of about 650 nm. The twisting of the it, the length of the 4G thin blue 1 is as described in the patent application, the dual-wavelength light source generated by the ======================================================== The two wavelengths emitted are different, and the beams emitted by the first, second, and third light source generators are merged through the beam splitter. 20. The integrated holographic optical head according to claim 14, wherein the splitting is a three-color spectroscope for completely reflecting the first and second beams emitted by the first and third sources. And the light beam emitted by the second light source is completely penetrated. 21. An integrated optical module for providing light source and signal reception required for a holographic optical pickup to read and write one or more optical recording media of different specifications including a holographic optical disc, comprising: a light source generator for generating an incident light beam of a specific wavelength; a second light source generator for generating an incident light beam of a specific wavelength different from the first light source; and a reflective spatial light modulator for injecting the first light source a light source beam is modulated into a reference beam and an information beam; a beam splitter is configured to reflect the beam emitted by the second source and pass the return beam of the first source; - a holographic optical element for enabling The first outgoing beam produces a diffraction deflection 'and the second outgoing beam passes directly, and the beams of the two sources pass through the element and merge' and cause the first return beam reflected through the optical recording medium to pass directly through 23 1327314 = image _ component, the second returning beam is deflected to the photodetecting element to receive the return light 22 deflected by the holographic optical element for receiving The imaging optical element to return the information to the reconstruction beam shell, which comprises a beam of full-page image information. According to the integrated optical module described in claim 21, the source generator can generate a blue light beam of about 405 nm of green light having a wavelength of about 532 nm. Secondary wavelength 23. The integrated optical module according to claim 21, wherein the second light source generator can generate a red light beam having a wavelength of about 65 〇 nm, an infrared light beam having a wavelength of about 78 〇 nm, or a wavelength of 4 〇 5 nm. The blue light beam left and right. twenty four