JP2004271657A - Film viewer used also as magnifier - Google Patents

Film viewer used also as magnifier Download PDF

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Publication number
JP2004271657A
JP2004271657A JP2003059327A JP2003059327A JP2004271657A JP 2004271657 A JP2004271657 A JP 2004271657A JP 2003059327 A JP2003059327 A JP 2003059327A JP 2003059327 A JP2003059327 A JP 2003059327A JP 2004271657 A JP2004271657 A JP 2004271657A
Authority
JP
Japan
Prior art keywords
lens
viewer
magnifier
loupe
light source
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
Application number
JP2003059327A
Other languages
Japanese (ja)
Inventor
Michihiro Tsuchida
道博 土田
Tokio Eda
登喜男 江田
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.)
RANDAKKU KK
Original Assignee
RANDAKKU KK
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 RANDAKKU KK filed Critical RANDAKKU KK
Priority to JP2003059327A priority Critical patent/JP2004271657A/en
Publication of JP2004271657A publication Critical patent/JP2004271657A/en
Pending legal-status Critical Current

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  • Accessories Of Cameras (AREA)
  • Lenses (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To use a lens for a viewer also as a magnifier, because the magnifier and a viewer used as the different kind of equipment at present use similar lenses. <P>SOLUTION: A magnifier lens having comparatively low magnification is approximate to the viewer lens in terms of focal length, and the magnifier lens can not be used for the viewer in relation to visual field and an eye point but the reverse is possible. Then, the problem is solved by changing the structure of a machine body. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は光学機器の写真用品に属する。
【0002】
【従来の技術】
従来に於いてはそれぞれの機器が単独で設定され、ビュ−ア−のレンズ部と光源部を分ける事は出来ず、敢えて分離する事は破壊する手段しか無かった。又ル−ペレンズをビュ−ア−として使うには光源部が無く通常のライトボックス上でル−ペとして使用する以外出来ない状況に在った。
【0003】
【発明が解決しようとする課題】
本発明は類似のレンズを別種の機器として重複して使わず兼用する事で資源節約の一端を担い、且つ徒に機器を増やす愚を避ける事を目的とした。
ル−ペと称されて居るレンズは拡大倍率3倍から10倍の多岐に亘り更に15倍を越える特殊な物も在る。通常にル−ペとして使用されるのは3倍から5倍程度が多く視野内に135フィルムの全画面をカバ−する低倍率物とカバ−出来ない高倍率物が在る。5倍の倍率を越えるル−ペでは良好な視野範囲は135フィルムをカバ−する事が出来ず画面の部分を拡大するに過ぎない。
【0004】
又呼称される倍率は定数をル−ペレンズの焦点距離で割った値に+1すると言う経験値的表示で在り実際の使用に当たっては使用状態に依って変動する値で目安値に過ぎない。レンズを使用したビュ−ア−の拡大倍率は2.5倍から3倍程度で在りル−ペレンズの拡大倍率の小さい方と較べて同等といえる。またビュ−ア−は必ず全視野をカバ−する必要が在り、ル−ペの様に部分拡大と言う状態は有り得無い。
【0005】
【課題を解決するための手段】
拡大倍率が同等で在ると言う事は両者共に肉眼視で在るからレンズの光学的性能上の問題はル−ペではレンズに目を近づけて使用するから長いアイポイントを求められず、20mm以下でも許される。しかしビュ−ア−では両眼視する事から必然的にアイポイントが長くなり此処に基本的な相違が見られるが大は小を兼ね、ビュ−ア−レンズをル−ペとして使用することは可能で有り、アイポイントが長い事を理解すれば使用上差し支え無い。
【0006】
問題は両者の構造に在り、ビュ−ア−は光源を内蔵し、且つフィルムを定位置に保持する機構を持たねば成らない。一方ル−ペは見る対象物に直接載せ又は触れて其の場所を拡大視する。此の差異は僅かで在り、現在一体化されて居るビュ−ア−をル−ペと光源部とレンズ部とに分け、レンズ部単体でル−ぺとして使用できる形態とする事で解決する。
【0007】
【発明の実施の形態】
図1は本発明に於けるビュ−ア−の構造を示す。1−1は拡大レンズ1−2はレンズを保持し視野位置を定めるレンズ枠、1−3は光源部で同時にビュ−ア−としてフィルム保持機能を上部に持っている、1−4は光源部とレンズ部を連結固定する部分であり、1−5はスリ−ブ挿入口を示す。
【0008】
図2はレンズ部と光源部を分離した状態を示し、2−1のレンズ部は此の状態でル−ペとして機能し得る構造として在る。
2−3の光源部は2−4の連結部にマウントフィルム及びフィルムスリ−ブの保持台を持ち、分離した2−2のレンズ枠と併せてマウント及びスリ−ブを支持固定する構造としてある。2−5はマウント挿入口を示す。
【0009】
【実施例】
実施するに当たりレンズとして複合レンズを採用し外郭は合成樹脂とし光源部との連結を容易とした。光源部側も同じ材質で作り取付取り外し時に何れかがより激しい摩耗を来さない様に配慮した。
光源は暫定的にタングステンランプを用い、電源は乾電池で点灯し、ランプの点灯はマウント又はスリ−ブの挿入に依って作動するスイッチ機構を採用してスイッチの切り忘れに依る電池の消耗を防止した。
【0010】
【発明の効果】
従来のル−ペではレンズに目を接近させフィルム画面を覗く20mm以下の短いアイポイントでしか無かったが元々両眼視を求められるビュ−ア−では遥かに長い200mmに及ぶアイポイントを持ち従来のル−ペに比して身を屈める事無く楽な姿勢でフィルムの全画面を拡大視出来た。
【図面の簡単な説明】
【図1】本発明に於けるビュ−ア−としての形状を示す。
【図2】本発明のビュ−ア−を分離した形を示す。
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to photographic supplies for optical equipment.
[0002]
[Prior art]
In the past, each device was set independently, and the lens portion and the light source portion of the viewer could not be separated, and there was only a means of destruction to separate them. In addition, the loupe lens cannot be used as a viewer because there is no light source unit and the loupe lens cannot be used as a loupe on a normal light box.
[0003]
[Problems to be solved by the invention]
An object of the present invention is to provide a part of resource saving by using a similar lens as a different kind of apparatus without duplicating the use of the same kind of apparatus.
The lens called a loupe has a wide variety of magnifications from 3 to 10 times, and there are also special ones exceeding 15 times. Usually, a loupe is used at a magnification of about 3 to 5 times, and there are a low-magnification object which covers the entire screen of the 135 film and a high-magnification object which cannot be covered in a visual field. With a loupe exceeding a magnification of 5 times, a good view range cannot cover the 135 film, but only enlarges the screen portion.
[0004]
Also, the magnification referred to is an empirical display of +1 to a value obtained by dividing a constant by the focal length of the loupe lens, and in actual use is a value that varies depending on the use state and is only a guide value. The magnification of the viewer using the lens is about 2.5 to 3 times, which can be said to be equivalent to that of the loupe lens having a smaller magnification. Also, the viewer must cover the entire visual field without fail, and there is no possibility of a partial enlargement like a loupe.
[0005]
[Means for Solving the Problems]
The fact that the magnifications are the same means that both are visible to the naked eye, and the problem with the optical performance of the lens is that the loupe is used with the eyes close to the lens, so a long eye point is not required, and 20 mm The following are also allowed: However, in the viewer, the eye point is inevitably longer because of the binocular vision, and there is a fundamental difference here. However, it is not possible to use the viewer lens as a loupe. It is possible, and there is no problem in using it if you understand that the eye point is long.
[0006]
The problem lies in the structure of both, in that the viewer must have a built-in light source and a mechanism to hold the film in place. The loupe, on the other hand, directly mounts or touches the object to be viewed and magnifies the place. This difference is slight, and is solved by dividing the currently integrated viewer into a loupe, a light source section, and a lens section so that the lens section can be used alone as a rule.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 shows the structure of a viewer according to the present invention. 1-1 is a magnifying lens 1-2 is a lens frame that holds a lens and determines a field position, 1-3 is a light source unit and has a film holding function as a viewer at the same time, and 1-4 is a light source unit And a lens unit for connecting and fixing the lens unit. Reference numeral 1-5 denotes a sleeve insertion port.
[0008]
FIG. 2 shows a state in which the lens unit and the light source unit are separated, and the lens unit 2-1 has a structure capable of functioning as a loupe in this state.
The light source section 2-3 has a mount film and a film sleeve holder at the connection section 2-4, and has a structure for supporting and fixing the mount and sleeve together with the separated 2-2 lens frame. . 2-5 indicates a mount insertion port.
[0009]
【Example】
In the implementation, a compound lens was adopted as the lens, and the outer shell was made of synthetic resin to facilitate connection with the light source unit. The light source section was also made of the same material, and care was taken not to cause more severe wear when installing or removing.
The light source used a tungsten lamp tentatively, the power supply was lit by dry batteries, and the lamp was lit by the mounting of a mount or a sleeve, and a switch mechanism was activated to prevent battery consumption due to forgetting to switch off. .
[0010]
【The invention's effect】
In the conventional loupe, there was only a short eye point of 20 mm or less to bring the eyes closer to the lens and look into the film screen.However, the viewer that originally requires binocular vision has a much longer eye point of 200 mm. The entire screen of the film could be magnified in a comfortable position without sagging compared to the loupe.
[Brief description of the drawings]
FIG. 1 shows a shape as a viewer in the present invention.
FIG. 2 shows an isolated form of the viewer of the present invention.

Claims (1)

スライドフィルム用のビュ−ア−の光源部を取り外し可能としレンズ部分がル−ペとして使用出来るフィルムビュ−ア−。A film viewer in which the light source of the slide film viewer can be removed and the lens part can be used as a loupe.
JP2003059327A 2003-03-06 2003-03-06 Film viewer used also as magnifier Pending JP2004271657A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2003059327A JP2004271657A (en) 2003-03-06 2003-03-06 Film viewer used also as magnifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003059327A JP2004271657A (en) 2003-03-06 2003-03-06 Film viewer used also as magnifier

Publications (1)

Publication Number Publication Date
JP2004271657A true JP2004271657A (en) 2004-09-30

Family

ID=33122165

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2003059327A Pending JP2004271657A (en) 2003-03-06 2003-03-06 Film viewer used also as magnifier

Country Status (1)

Country Link
JP (1) JP2004271657A (en)

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