WO2024257251A1 - スピーカ付きメガネつる - Google Patents

スピーカ付きメガネつる Download PDF

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Publication number
WO2024257251A1
WO2024257251A1 PCT/JP2023/022026 JP2023022026W WO2024257251A1 WO 2024257251 A1 WO2024257251 A1 WO 2024257251A1 JP 2023022026 W JP2023022026 W JP 2023022026W WO 2024257251 A1 WO2024257251 A1 WO 2024257251A1
Authority
WO
WIPO (PCT)
Prior art keywords
speaker
temple
opening
sound
duct
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2023/022026
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
達也 加古
大将 千葉
賢一 野口
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NTT Inc
Original Assignee
Nippon Telegraph and Telephone Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to CN202380099223.5A priority Critical patent/CN121359072A/zh
Priority to PCT/JP2023/022026 priority patent/WO2024257251A1/ja
Priority to KR1020257039537A priority patent/KR20250172731A/ko
Priority to JP2025526985A priority patent/JPWO2024257251A1/ja
Publication of WO2024257251A1 publication Critical patent/WO2024257251A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C11/00—Non-optical adjuncts; Attachment thereof
    • G02C11/10—Electronic devices other than hearing aids
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C11/00—Non-optical adjuncts; Attachment thereof
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C5/00—Constructions of non-optical parts
    • G02C5/14—Side-members

Definitions

  • the disclosed technology relates to glasses temples with speakers that are suitable for presenting audio content with VR glasses or AR glasses.
  • VR glasses and AR glasses that have speakers placed on the temples and provide users with audio content linked to video content.
  • VR stands for Virtual Reality
  • AR stands for Augmented Reality.
  • VR glasses, AR glasses, etc. will be collectively referred to as "VR glasses.”
  • An example of VR glasses is shown in Fig. 1.
  • Speakers are placed on the temples of the glasses at positions 101 near the ears. Unlike speakers that are worn to block the ear canal, speakers placed on the temples of glasses are preferable as audio presentation devices for VR and AR because they put less strain on the ears even when worn for long periods of time.
  • the sound from the speakers diffuses into the air, there is an issue that the audio content coming from the speakers is radiated to the surroundings, exposing information, even though the video content projected on the glasses is only visible to the user.
  • Earphones (Personalized Sound Zone earphones, hereinafter referred to as "PSZ earphones") that can suppress sound leakage to the surroundings without blocking the external ear canal have been proposed (Patent Document 1).
  • 2A and 2B are schematic diagrams showing the speaker unit of the PSZ earphone, in which (a) is a side view of the speaker unit 2, (b) is a perspective view, and (c) is a view showing the speaker unit 2 placed at the ear (right ear).
  • Reference numeral 201 denotes a magnet
  • 202 denotes a coil
  • 203 denotes a diaphragm.
  • the opening 205 were not present, the sound waves emitted from the opening 204 would propagate to spaces other than the external ear canal, resulting in sound leakage to the surroundings. If a sound wave of the same amplitude but in opposite phase is superimposed on the original sound wave, the original sound wave can be eliminated or reduced. Therefore, when a sound of opposite phase is emitted from the opening 205, it interferes with a sound of normal phase that is propagating in directions other than the direction of the external ear canal from the opening 204, and the two waves cancel each other out in the vicinity of the speaker unit 2. As a result, a positive phase sound reaches the ear canal, but the sound from the speaker is eliminated or suppressed due to interference in the vicinity of the speaker unit 2, realizing an earphone that does not leak sound to the surroundings.
  • a PSZ earphone (speaker unit 2 described above) is used as the speaker for the VR glasses of FIG. 1, it is expected that the audio content will not leak to the surroundings. However, since the speaker unit 2 has the opening 205 disposed in the D2 direction, the sound pressure of the reproduced sound decreases in the low range. When presenting content through VR glasses, it is undesirable for the sound content to have a poor low range.
  • the eyeglasses temple with speaker includes a speaker and a pipe.
  • the speaker is disposed adjacent to the front end of the temple, and the duct has an opening at a position adjacent to the ear end of the temple that is close to the ear canal when the glasses are worn, or at a position halfway along the temple, and transmits sound from the speaker to the opening.
  • the disclosed technology makes it possible to create VR glasses with PSZ speakers that do not block the ear canal, do not leak sound to the surroundings, and have rich low-frequency sounds.
  • FIG. 1 is a diagram showing an example of existing VR glasses.
  • FIG. 2 is a diagram showing a schematic diagram of a speaker unit of a PSZ earphone and its placement on the ear.
  • 3A and 3B are diagrams showing examples of speaker units used in the VR glasses of the first embodiment.
  • FIG. 2 is a perspective view of a speaker-equipped temple (for the right ear) according to the first embodiment.
  • FIG. 2 is a perspective view of a speaker-equipped temple (for the right ear) according to the first embodiment.
  • FIG. 1 is an overall perspective view of VR glasses according to a first embodiment. 1 is an exploded view, a bottom view, and a cross-sectional view of a glasses temple (for the right ear) according to a first embodiment.
  • FIG. 11 is a perspective view of a temple with a speaker (for the right ear) according to a second embodiment.
  • 13 is an exploded view, a bottom view, and a cross-sectional view of a glasses temple (for the right ear) according to a second embodiment.
  • FIG. 13 is a perspective view of a glasses temple (for the right ear) according to the third embodiment.
  • FIG. 11 is an exploded view of a temple (for the right ear) according to the second embodiment.
  • the bass reflex system is known as a technique for reproducing rich low-frequency sounds with small speakers.
  • the bass reflex system connects a small speaker to a space (resonance space) designed to obtain the desired resonant frequency, and produces low-frequency sounds that are amplified through resonance.
  • the temples of the VR glasses are used to form a long and thin duct through which the speaker transmits vibrations. This increases the weight of the air on the speaker when it vibrates, increasing the load on the speaker and lowering the lowest resonance frequency (so-called f0 ).
  • the low frequency amplification by the disclosed technology is called "low frequency boost.”
  • the outlet for the low frequency boosted sound is placed near the external ear canal, and the speaker for low frequency boost is placed near the glasses to increase the distance of the duct.
  • the interference between the positive phase low frequency boost sound and the negative phase low frequency boost sound is used to prevent sound leakage to the surroundings. Since high frequencies can be reproduced even with small-diameter speakers, the high-frequency speakers are placed close to the ears and the playback volume is reduced, adjusting the overall sound quality and reducing sound leakage.
  • [First embodiment] 3 is an example of a speaker unit used in the VR glasses of the first embodiment.
  • An existing speaker unit may be used as the speaker unit.
  • 3(a) and (b) are a side view and a perspective view of the speaker unit 31 for low-frequency boost.
  • the sound of the speaker unit 31 is PSZ controlled, but the housing for PSZ control is realized by the temples of the glasses, so the speaker unit 31 is in a bare state without an enclosure.
  • the sound in the D1 direction is called the positive phase sound
  • the sound in the D2 direction is called the negative phase sound.
  • the magnet 301 and the coil 302 are omitted from the illustration in FIG. 3(b).
  • 3C is a side view of the high-frequency speaker unit 32.
  • the high-frequency speaker unit 32 is not PSZ controlled, and therefore has an enclosure 305 for sealing the rear surface.
  • FIG. 4 and 5 are overall perspective views of the temple with a speaker according to the first embodiment. Both Fig. 4 and Fig. 5 show a temple for the right ear.
  • 6 is an overall view of the VR glasses 6 according to the first embodiment.
  • the left ear temple 5 is a mirror image of the right ear temple 4.
  • Reference numeral 601 denotes a front frame into which the glasses are fitted, and an end 602 of the temple is referred to as the "front frame end.”
  • Reference numeral 603 denotes an ear hook portion, and an end 604 of the temple is referred to as the "ear hook end.”
  • FIG. 7 is an exploded view of the temple 4 according to the first embodiment.
  • the right ear temple will be described in detail with reference to Figures 4, 5, 6 and 7.
  • the temple 4 shows the temple for the right ear as seen from the right side (the R side in FIG. 6).
  • a high-frequency speaker 32 is disposed near the ear, and a low-frequency boost speaker 31 is disposed (built-in) closer to the glass.
  • the temple is mainly composed of a temple base plate 401 , a partition plate 402 , and a pipe cover 403 .
  • FIG. 7(a) to (c) are exploded views of the right-ear temple 4, with 701 being the speaker unit receiving portion.
  • (d) is a bottom view of the temple 4,
  • (e) is a cross-sectional view taken along line A-A in (d), and
  • (f) is a cross-sectional view taken along line B-B in (d).
  • the temple substrate 401 and the partition plate 402 form one low-frequency boost pipe (positive phase pipe 711 )
  • the partition plate 402 and the pipe cover 403 form another low-frequency boost pipe (negative phase pipe 712 ).
  • Fig. 7(f) is a cross-sectional view of the temple at the position of the low-frequency boost speaker 31. As described in Fig.
  • the sound amplified in the low frequency range by the positive phase pipe 711 is emitted from the first low frequency boost port 405.
  • the sound amplified in the negative phase pipe 712 is emitted from the second low frequency boost port 404.
  • the first low-frequency boost port 405 opens on the external ear canal side as shown in Fig. 5.
  • the second low-frequency boost port 404 is provided in two on the end of the duct cover closest to the ear and opens in a direction substantially parallel to the head as shown in Fig. 4.
  • the sound emitted by the low-frequency boost speaker is amplified in low frequencies and reaches the user's ears, and the sound radiated from the first low-frequency boost port and the sound radiated from the second low-frequency boost port interfere with each other, eliminating or reducing sound leakage to the surroundings.
  • the high-frequency speaker 32 is positioned with its opening facing the ear canal as shown in Figure 5.
  • the high-frequency speaker reduces the playback volume, adjusts the overall sound quality, and reduces sound leakage.
  • a high-frequency speaker is placed near the ear, but sound may be provided only by the low-frequency boost speaker without the high-frequency speaker.
  • the lengths of the positive phase pipe 711 and the negative phase pipe 712 are made equal, and the second low frequency boost port is provided in the vicinity of the first low frequency boost port.
  • the anti-phase line is made shorter than the positive phase line, and the second low-frequency boost port is provided midway along the temple.
  • FIG. 8 is a perspective view of a temple with a speaker according to the second embodiment.
  • the difference from the first embodiment is that a pipe cover 801 constituting the anti-phase pipe 712 is shortened, and a second low-frequency boost port 802 is provided midway through the temple.
  • 9A to 9C are exploded views of the right ear temple 8 according to the second embodiment
  • FIG. 9D is a bottom view of the temple 8
  • FIG. 9E is a cross-sectional view taken along line A-A in FIG. 9D
  • FIG. 9F is a cross-sectional view taken along line B-B in FIG. 9D.
  • the temple substrate 401 and the partition plate 402 constituting the positive phase pipe 711, and the first low-frequency boost port 405 are the same as those in the first embodiment.
  • the positive phase pipe and the negative phase pipe are configured by utilizing the length of the temples as they are.
  • the effect of the low-frequency boost can be increased by using the space in a longer and narrower shape. Therefore, in the third embodiment, a long duct is provided inside the temples of the glasses.
  • FIG. 10 is a perspective view of a temple 10 according to the third embodiment.
  • 11 is an exploded view of the temple 10 according to the third embodiment.
  • Reference numeral 1001 denotes a temple substrate
  • 1002 denotes a partition plate
  • 1003 denotes a conduit cover.
  • Low-frequency boost speaker 32 High-frequency speaker 401, 1001 Temple board 402, 1002 Partition plate 403, 801, 1003 Pipe cover 405, 1005 First low-frequency boost port 404, 802, 1004 Second low-frequency boost port 701, 1010 Speaker unit receiving portion 711 Positive phase pipe 712 Inverse phase pipe

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Ophthalmology & Optometry (AREA)
  • Optics & Photonics (AREA)
  • Acoustics & Sound (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Headphones And Earphones (AREA)
PCT/JP2023/022026 2023-06-14 2023-06-14 スピーカ付きメガネつる Ceased WO2024257251A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN202380099223.5A CN121359072A (zh) 2023-06-14 2023-06-14 带扬声器的眼镜腿
PCT/JP2023/022026 WO2024257251A1 (ja) 2023-06-14 2023-06-14 スピーカ付きメガネつる
KR1020257039537A KR20250172731A (ko) 2023-06-14 2023-06-14 스피커 부착 안경다리
JP2025526985A JPWO2024257251A1 (https=) 2023-06-14 2023-06-14

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2023/022026 WO2024257251A1 (ja) 2023-06-14 2023-06-14 スピーカ付きメガネつる

Publications (1)

Publication Number Publication Date
WO2024257251A1 true WO2024257251A1 (ja) 2024-12-19

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PCT/JP2023/022026 Ceased WO2024257251A1 (ja) 2023-06-14 2023-06-14 スピーカ付きメガネつる

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JP (1) JPWO2024257251A1 (https=)
KR (1) KR20250172731A (https=)
CN (1) CN121359072A (https=)
WO (1) WO2024257251A1 (https=)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015522841A (ja) * 2012-06-11 2015-08-06 三井化学株式会社 眼鏡用アダプタ
WO2017221247A1 (en) * 2016-06-21 2017-12-28 Audio Pixels Ltd. Systems and manufacturing methods for an audio emitter in spectacles
CN212905789U (zh) * 2020-10-21 2021-04-06 深圳市深科创投科技有限公司 一种发声体的定向出音结构和音频眼镜
JP2021149080A (ja) * 2020-03-18 2021-09-27 安福瑞有限公司Ifory Limited メガネ

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023084574A1 (ja) 2021-11-09 2023-05-19 日本電信電話株式会社 音響信号出力装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015522841A (ja) * 2012-06-11 2015-08-06 三井化学株式会社 眼鏡用アダプタ
WO2017221247A1 (en) * 2016-06-21 2017-12-28 Audio Pixels Ltd. Systems and manufacturing methods for an audio emitter in spectacles
JP2021149080A (ja) * 2020-03-18 2021-09-27 安福瑞有限公司Ifory Limited メガネ
CN212905789U (zh) * 2020-10-21 2021-04-06 深圳市深科创投科技有限公司 一种发声体的定向出音结构和音频眼镜

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CN121359072A (zh) 2026-01-16
KR20250172731A (ko) 2025-12-09
JPWO2024257251A1 (https=) 2024-12-19

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