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    • 5. 发明专利
    • Holographic image display apparatus
    • GB201710306D0
    • 2017-08-09
    • GB201710306
    • 2017-06-28
    • YANG FAN
    • An apparatus for projecting a three-dimensional holographic image includes a coherent light source 6 and beam expander optics 8 which transmit light onto spatial light modulator (SLM) 4. Under control from processor 5, SLM 4 performs amplitude modulation to impart an amplitude pattern representative of a 2D slice of the desired 3D image projection onto the light beam. The amplitude-patterned light is subject to a Fourier transform by a lens arrangement (e.g. lens 3). The Fourier transform of the amplitude-patterned light is brought to focus upon a further, phase-modulating, SLM 2 which performs a Fresnel transform upon the light incident upon it. SLM 2 is also subject to control from processor 5. The Fresnel transform provides a lensing effect, thus different phase-modulating patterns enable associated 2D holographic image slices to be focused in adjacent image planes. Rapid sequential display of different 2D image slices is used to generate the perception of a 3D projected holographic image in the image space. Embodiments include alternative lens arrangements including a phase mask (31, figure 2) to impart a pseudo-random phase pattern on the beam to reduce noise in the projected image. An associated method of generating a holographic image is also disclosed. The disclosed apparatus and method are intended to enable rapid generation of a holographic projection without requiring processor-intensive computation of Fourier transforms of the image slices.
    • 6. 发明专利
    • BR8201521U
    • 2003-05-13
    • BR8201521
    • 2002-05-10
    • LI HUA LUHUNG YANG FANCHU CHUN CHIU
    • HU CHIEN-KUNG
    • A61M5/32
    • A hypodermic syringe comprises a barrel having at least one catching piece disposed at the end; an outer sleeve fitted rotatably with the barrel to turn to locate at the first position and the second position and provided at least one escape hole; a needle holder having a cylinder cooperating portion disposed slidably in the receiving hole of the barrel, a retaining circular groove disposed in the outer periphery of the needle holder for retaining the catching piece of the barrel; a plunger having a rod body capable of pulling back the needle holder. As the outer sleeve is turned to the first position, each catching piece of the barrel retains the retaining tooth of the barrel. The needle holder is unable to displace. As the outer sleeve is turned to the second position, the escape hole is corresponding to the catching piece of the barrel to eject outward. The needle holder is not confined so as to be pulled back by the plunger.
    • 7. 发明专利
    • TR200201133U
    • 2002-10-21
    • TR200201133
    • 2002-04-26
    • LI HUA LUHUNG YANG FANCHU CHUN CHIO
    • HU CHIEN-KUNG
    • A61M5/32A61M
    • A hypodermic syringe comprises a barrel having at least one catching piece disposed at the end; an outer sleeve fitted rotatably with the barrel to turn to locate at the first position and the second position and provided at least one escape hole; a needle holder having a cylinder cooperating portion disposed slidably in the receiving hole of the barrel, a retaining circular groove disposed in the outer periphery of the needle holder for retaining the catching piece of the barrel; a plunger having a rod body capable of pulling back the needle holder. As the outer sleeve is turned to the first position, each catching piece of the barrel retains the retaining tooth of the barrel. The needle holder is unable to displace. As the outer sleeve is turned to the second position, the escape hole is corresponding to the catching piece of the barrel to eject outward. The needle holder is not confined so as to be pulled back by the plunger.
    • 9. 发明专利
    • SAFETY SYRINGE WITH RETRACTABLE NEEDLE HOLDER
    • MY126271A
    • 2006-09-29
    • MYPI20021384
    • 2002-04-16
    • LI HUA LUHUNG YANG FANCHU CHUN CHIU
    • HU CHIEN-KUNG
    • A61M5/00A61M20060101
    • A HYPODERMIC SYRINGE COMPRISES A BARREL (10) HAVING AT LEAST ONE CATCHING PIECE (13) DISPOSED AT THE END; AN OUTER SLEEVE (20) FITTED ROTATABLY WITH THE BARREL TO TURN TO LOCATE AT THE FIRST POSITION (271) AND THE SECOND POSITION (272) AND PROVIDED AT LEAST ESCAPE HOLE (26); A NEEDLE HOLDER (30) HAVING A CYLINDER COOPERATING PORTION (11) DISPOSED SLIDABLY IN THE RECEIVING HOLE (12) OF THE BARREL (10), A RETAINING CIRCULAR GROOVE (37) DISPOSED IN THE OUTER PERIPHERY OF THE NEEDLE HOLDER (30) FOR RETAINING THE CATCHING PIECE OF THE BARREL; A PLUNGER (40) HAVING A ROD BODY (41) CAPABLE OF PULLING BACK THE NEEDLE HOLDER (30). AS THE OUTER SLEEVE (20) IS TURNED TO THE FIRST POSITION, EACH CATCHING PIECE (13) OF THE BARREL RETAINS THE RETAINING TOOTH (131) OF THE BARREL. THE NEEDLE HOLDER (30) IS UNABLE TO DISPLACE. AS THE OUTER SLEEVE (20) IS TURNED TO THE SECOND POSITION, THE ESCAPE HOLE (26) IS CORRESPONDING TO THE CATCHING PIECE (13) OF THE BARREL TO EJECT OUTWARD. THE NEEDLE HOLDER (30) IS NOT CONFINED SO AS TO BE PULLED BACK BY THE PLUNGER (40). (FIG. 1)