JPS63298484A - Light projecting/receiving device for fingerprint detection - Google Patents
Light projecting/receiving device for fingerprint detectionInfo
- Publication number
- JPS63298484A JPS63298484A JP62131083A JP13108387A JPS63298484A JP S63298484 A JPS63298484 A JP S63298484A JP 62131083 A JP62131083 A JP 62131083A JP 13108387 A JP13108387 A JP 13108387A JP S63298484 A JPS63298484 A JP S63298484A
- Authority
- JP
- Japan
- Prior art keywords
- light
- wavelength
- light projecting
- image receiving
- image
- 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.)
- Pending
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 23
- 230000005284 excitation Effects 0.000 claims description 6
- 238000003384 imaging method Methods 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 abstract description 9
- 238000007781 pre-processing Methods 0.000 abstract description 4
- 239000011810 insulating material Substances 0.000 abstract description 3
- 230000001678 irradiating effect Effects 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- 238000004040 coloring Methods 0.000 abstract 1
- 238000000638 solvent extraction Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000012806 monitoring device Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N argon Substances [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Landscapes
- Image Input (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は指紋検出用投受光装置に関し、鑑識技術分野に
おける指紋検出装置であって、投光部と受像部を一体的
に運搬できる構造にし、機動性、可搬性、操作性を高め
た指紋検出装置に関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a light projecting/receiving device for fingerprint detection, and is a fingerprint detecting device in the field of forensic technology, which has a structure in which the light projecting part and the image receiving part can be integrally transported. , relates to a fingerprint detection device with improved mobility, portability, and operability.
従来より光学的手段を用いた指紋検出技術に関する研究
が多く行われ、米国の数社から検出装置が販売されてい
る。しかし、これらの多くは大型レーザを使用し、冷却
水や大型の電源容量を必要とするので、室内に常時設置
して、検出作業を行うものが殆どであった。Many studies have been conducted on fingerprint detection technology using optical means, and detection devices are being sold by several companies in the United States. However, most of these use large lasers and require cooling water and large power supply capacity, so most of them are always installed indoors to perform detection work.
これに対して、米国Ｌａ５ｅｒ−Ｐｈｏｔｏｎｉｃｓ社
から販売されている指紋検出装置は、小型ＹＡＧレーザ
を用い、レーザ光を光伝送ファイバで指紋の残存する検
体へ導き、指紋隆線部の発光を得るもので、発光画像は
別のＴＶカメラにて撮像するものである。この装置はレ
ーザ発振器を動かす必要がない点は利点であるが、レー
ザ光照射側と受像器が別々であるために操作性が悪く、
取扱いに複数の人員を要するという欠点がある。On the other hand, the fingerprint detection device sold by La5er-Photonics in the United States uses a small YAG laser and guides the laser light through an optical transmission fiber to the sample where the fingerprint remains, obtaining light emission from the fingerprint ridges. The light emission image is captured by a separate TV camera. This device has the advantage of not having to move the laser oscillator, but it has poor operability because the laser beam irradiation side and the image receiver are separate.
The disadvantage is that it requires multiple people to handle it.
またアルゴンイオンレーザを利用した可搬型装置も開発
、販売されているが、軽量化に限界があること、振動や
衝撃に弱いこと、メンテナンス性が悪い点などが問題と
して残っている。Portable devices using argon ion lasers have also been developed and sold, but problems remain such as limitations in weight reduction, susceptibility to vibration and shock, and poor maintainability.
本発明は可搬式で操作性のよい指紋検出装置を提供しよ
うとするもので、従来のこの種の装置のもつ次の欠点を
解消しようとするものである。The present invention aims to provide a portable fingerprint detection device with good operability, and is intended to solve the following drawbacks of conventional devices of this type.
ｌ）投光部と受像部が別々であるために指紋採取現場に
おける操作性が低い。l) Since the light projecting section and the image receiving section are separate, operability at the fingerprint collection site is low.
２）電源容敬が大きく使用場所が限られる。2) It requires a large amount of power, so the places where it can be used are limited.
３）振動や衝撃に弱い。3) Weak against vibration and shock.
４）部品交換に手間を要しメンテナンス性が悪い。4) It takes time to replace parts and maintenance is poor.
そこで本発明は犯罪現場や実験室内での電磁波を用いた
指紋採取作業時に、投光部と画像化するための受像部と
を同時に、しかも容易に動かすことができ、その上、操
作する作業員が１人で付着場所の探索、検出作業を行う
ことができるようにコンパクト化し、軽量化した指紋検
出用投受光装置を提供することを目的とする。Therefore, the present invention enables the light emitting part and the image receiving part for image formation to be moved simultaneously and easily during fingerprint collection work using electromagnetic waves at a crime scene or in a laboratory. An object of the present invention is to provide a light emitting/receiving device for fingerprint detection that is compact and lightweight so that a single person can search for a place where fingerprints are attached and perform detection work.
上記問題点を解決するための本発明の指紋検出用投受光
装置は次の技術手段を備える。In order to solve the above-mentioned problems, the light emitting and receiving device for fingerprint detection of the present invention includes the following technical means.
１）光源として電磁波発生ランプを用い、指紋検出の前
処理に用いる色素の励起光の波長を含んだ照射光を光源
から離れた位置にある検体へ導くための投光部を有する
。1) An electromagnetic wave generating lamp is used as a light source, and a light projecting section is provided for guiding irradiation light containing the wavelength of excitation light of a dye used for pre-processing for fingerprint detection to a specimen located at a position away from the light source.
この投光部は照射光を平行化したり、検体の大きさに応
じて照射面積を拡大、縮小するための光学系を有する。This light projecting section has an optical system for collimating the irradiated light and for enlarging or reducing the irradiated area depending on the size of the specimen.
また投光部には照射された電磁波から検出に必要な特定
波長を取り出すためのフィルタを有する。このフィルタ
は指紋検出の前処理に用いる色素の励起光の波長に応じ
て、交換することにより、効果的な検出が可能となる。Further, the light projecting section has a filter for extracting a specific wavelength necessary for detection from the irradiated electromagnetic waves. By replacing this filter according to the wavelength of the excitation light of the dye used for pre-processing for fingerprint detection, effective detection becomes possible.
２）シャープカットフィルタ等の励起光をカットし、指
紋像からの蛍光のみを透過するフィルタおよび受光レン
ズを装着した二次元撮像装置から成る受像部を有する。2) It has an image receiving section consisting of a two-dimensional imaging device equipped with a filter such as a sharp cut filter that cuts excitation light and transmits only fluorescence from a fingerprint image, and a light receiving lens.
。
３）上記投光部と受像部とは一体運搬可能に組み合わせ
て一体装置を形成している。. 3) The light projecting section and the image receiving section are combined to form an integrated device so that they can be transported as one unit.
本発明の装置は可搬式で操作性に富むもので指紋を検出
すべき現場において、容易に指紋検出を行うことができ
る。The device of the present invention is portable and highly operable, and can easily perform fingerprint detection at the site where fingerprints are to be detected.
第１図に本発明装置の実施例の全体構成を示す。実施例
装置は、投光部１、受像部２、電源部３から構成され筐
体４に組込まれている。FIG. 1 shows the overall configuration of an embodiment of the device of the present invention. The embodiment device includes a light projecting section 1, an image receiving section 2, and a power supply section 3, and is built into a housing 4.
投光部１は、ランプ光源５．投光光学系６、シャープカ
ットフィルタ７から成り、ランプ光源５より照射された
指紋検出の前処理に用いる色素の励起波長を含んだ電磁
波は投光光学系６、電磁波から励起光の波長以下の波長
のみを透過するシャープカットフィルタ７を介して指紋
検体８に照射される。この際、投光光学系６のレンズは
照射方向に移動可能な構造とし、検体８の大きさに応じ
た光の照射面積を得ることができる。また投光部ｌは、
角度調整用ネジ１５により照射角度を変化させることが
できる。シャープカットフィルタ７は容易に交換できる
構造となっており、用いる色素の励起光の波長に応じた
最適な波長の電磁波を得ることが可能である。The light projecting unit 1 includes a lamp light source 5. The projection optical system 6 consists of a light projection optical system 6 and a sharp cut filter 7, and the electromagnetic waves emitted from the lamp light source 5 that contain the excitation wavelength of the dye used for preprocessing for fingerprint detection are transmitted to the projection optical system 6. The fingerprint specimen 8 is irradiated with the light through a sharp cut filter 7 that transmits only the wavelength. At this time, the lens of the light projecting optical system 6 is structured to be movable in the irradiation direction, so that the irradiation area of the light can be obtained in accordance with the size of the specimen 8. In addition, the light projecting section l is
The irradiation angle can be changed using the angle adjustment screw 15. The sharp cut filter 7 has a structure that can be easily replaced, and it is possible to obtain an electromagnetic wave with an optimal wavelength depending on the wavelength of excitation light of the dye used.
検体８からの発光像を撮像する受像部２は、二次元撮像
装置９と、受光レンズ系１０と、照射する電磁波の波長
以下（照射光の波長を含む）の波長領域の光を透過しな
い素材から成る干渉フィルタ１１とから成り、カメラの
前後位置調整機能も兼ね備える取手１６を付属している
。また干渉フィルタ１１も蛍光波長に合わせて変更が可
能な構造である。The image receiving unit 2 that captures the luminescent image from the specimen 8 includes a two-dimensional image capturing device 9, a light receiving lens system 10, and a material that does not transmit light in a wavelength range below (including the wavelength of the irradiated light) the wavelength of the electromagnetic waves to be irradiated. It consists of an interference filter 11 consisting of an interference filter 11, and is attached with a handle 16 which also has the function of adjusting the front and back position of the camera. The interference filter 11 also has a structure that can be changed according to the fluorescence wavelength.
２次元撮像装置９で得たビデオ信号は画像モニタリング
装置１３に写すことが可能であり１画像ハードコピー装
置、ＶＴＲ等を付加することにより、指紋像の保存も可
能となる。The video signal obtained by the two-dimensional imaging device 9 can be recorded on the image monitoring device 13, and by adding a single-image hard copy device, VTR, etc., it is also possible to save a fingerprint image.
投光部ｌと受像部２とは筐体４の中に一体に組み込まれ
ている。投光部と受像部間の仕切壁は断熱材１２で遮断
されている。The light projecting section 1 and the image receiving section 2 are integrated into a housing 4. A partition wall between the light projecting section and the image receiving section is blocked by a heat insulating material 12.
また、重量も約２ｋｇと軽量であるので、取手１４によ
り手に下げた状態で指紋を探索することができ、または
三脚上に据えるだけで指紋を探索することが可能であり
、機動性に優れている。さらに受像部２を本体から取り
外し自在な構造とすることにより１機動性をさらに高め
ることができ、探索能力が向上する。In addition, since it is lightweight at approximately 2 kg, it is possible to search for fingerprints while hanging it in the hand using the handle 14, or it is possible to search for fingerprints simply by setting it on a tripod, which provides excellent mobility. ing. Furthermore, by making the image receiving section 2 removable from the main body, it is possible to further increase the mobility and improve the search ability.
さらに電源部３を検出と別にしてケーブルで相互間の信
号を送ることにより、検出部の重量をさらに軽量化する
ことができる。Furthermore, by using the power supply unit 3 separately from the detection unit and sending signals between them using a cable, the weight of the detection unit can be further reduced.
本発明装置はこのように一体構造であるために、指紋の
付着した検体８に特定波長の電磁波を照射することによ
り発光像を容易に撮像することが可能となる。Since the device of the present invention has such an integrated structure, it is possible to easily capture a luminescent image by irradiating electromagnetic waves of a specific wavelength onto the specimen 8 on which a fingerprint is attached.
また、作業員も干渉フィルタ１１と同一の素材のゴーグ
ル等を使用することにより、目視ｗｉ側をすることがで
き、潜在指紋の探索も容易に行うことができる。In addition, by using goggles or the like made of the same material as the interference filter 11, the worker can perform visual inspection and can easily search for latent fingerprints.
第２図に示すように室内での検出を行う場合には、スタ
ンド１７を用いて検体８からの指紋の検出を効率的に行
なうことも可能である。When performing indoor detection as shown in FIG. 2, it is also possible to efficiently detect fingerprints from the specimen 8 using the stand 17.
汎用性のあるランプ光源、受像部および電源部を一体化
、軽量化することにより、機動性に優れ、指紋の検出作
業が容易になり行動範囲が広がる。By integrating a versatile lamp light source, image receiving unit, and power supply unit and reducing weight, it has excellent mobility, makes fingerprint detection easier, and expands the range of activities.
第１図は本発明装置の実施例の斜視概略図、第２図はス
タンドを用いて使用する場合の実施例を示す側面図であ
る。
ｌ・・・投光部、２・・・受像部、３・・・電源部、４
・・・佼体、５・・・ランプ光源、６・・・投光光学系
、７・・・シャープカットフィルタ、８・・・指紋検体
、９・・・二次元撮像装置、ｌＯ・・・受光レンズ系、
１１・・・干渉フィルタ、１２・・・断熱材、１３・・
・画像モニタリング装置、１４・・・取手、１５・・・
角度調整用ネジ、１６・・・取手、１７・・・スタンド
。FIG. 1 is a schematic perspective view of an embodiment of the device of the present invention, and FIG. 2 is a side view showing the embodiment when used with a stand. l... Light projecting section, 2... Image receiving section, 3... Power supply section, 4
...Body, 5... Lamp light source, 6... Light projection optical system, 7... Sharp cut filter, 8... Fingerprint specimen, 9... Two-dimensional imaging device, lO... Light receiving lens system,
11...Interference filter, 12...Insulating material, 13...
・Image monitoring device, 14...handle, 15...
Angle adjustment screw, 16...handle, 17...stand.
Claims (1)
るフィルタを備えた投光部と、励起光をカットし、指紋
像からの蛍光のみを透過するフィルタおよび受光レンズ
を装着した二次元撮像装置からなる受像部とを一体運搬
可能に組み合わせて装置を形成したことを特徴とする指
紋検出用投受光装置。1. From a two-dimensional imaging device equipped with a light projector equipped with a filter that selects a specific wavelength from the electromagnetic waves emitted by the light source, a filter that cuts excitation light and transmits only the fluorescence from the fingerprint image, and a light receiving lens. What is claimed is: 1. A light emitting/receiving device for fingerprint detection, characterized in that the device is formed by combining an image receiving portion and an image receiving portion so as to be integrally transportable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62131083A JPS63298484A (en) | 1987-05-29 | 1987-05-29 | Light projecting/receiving device for fingerprint detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62131083A JPS63298484A (en) | 1987-05-29 | 1987-05-29 | Light projecting/receiving device for fingerprint detection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63298484A true JPS63298484A (en) | 1988-12-06 |
Family
ID=15049591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62131083A Pending JPS63298484A (en) | 1987-05-29 | 1987-05-29 | Light projecting/receiving device for fingerprint detection |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63298484A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6144309A (en) * | 1984-08-08 | 1986-03-04 | Hitachi Ltd | Pattern detecting method |
-
1987
- 1987-05-29 JP JP62131083A patent/JPS63298484A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6144309A (en) * | 1984-08-08 | 1986-03-04 | Hitachi Ltd | Pattern detecting method |
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