JPH0229602A - Imaging element - Google Patents
Imaging elementInfo
- Publication number
- JPH0229602A JPH0229602A JP17939788A JP17939788A JPH0229602A JP H0229602 A JPH0229602 A JP H0229602A JP 17939788 A JP17939788 A JP 17939788A JP 17939788 A JP17939788 A JP 17939788A JP H0229602 A JPH0229602 A JP H0229602A
- Authority
- JP
- Japan
- Prior art keywords
- lens
- polishing
- grinding
- cutting
- obtd
- 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
- 238000003384 imaging method Methods 0.000 title claims abstract description 8
- 238000000227 grinding Methods 0.000 claims abstract description 14
- 238000005520 cutting process Methods 0.000 claims abstract description 10
- 239000007787 solid Substances 0.000 claims abstract description 4
- 239000012780 transparent material Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 26
- 238000005498 polishing Methods 0.000 abstract description 14
- 239000006061 abrasive grain Substances 0.000 abstract description 10
- 238000000576 coating method Methods 0.000 abstract description 5
- 230000003287 optical effect Effects 0.000 abstract description 5
- 239000011248 coating agent Substances 0.000 abstract description 4
- 230000004075 alteration Effects 0.000 abstract description 2
- 230000002542 deteriorative effect Effects 0.000 abstract description 2
- 238000009499 grossing Methods 0.000 abstract 1
- 239000011247 coating layer Substances 0.000 description 13
- 229920005989 resin Polymers 0.000 description 7
- 239000011347 resin Substances 0.000 description 7
- 230000003746 surface roughness Effects 0.000 description 7
- 239000011521 glass Substances 0.000 description 6
- 238000007517 polishing process Methods 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 229910003460 diamond Inorganic materials 0.000 description 4
- 239000010432 diamond Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 125000006850 spacer group Chemical group 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 238000007665 sagging Methods 0.000 description 3
- 230000004304 visual acuity Effects 0.000 description 3
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 201000009310 astigmatism Diseases 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011151 fibre-reinforced plastic Substances 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 229920006015 heat resistant resin Polymers 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004554 molding of glass Methods 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Landscapes
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
Description
【発明の詳細な説明】
し産業上の利用分野］
本発明は、屈折率分布型レンズ、球面レンズ等の結像素
子の製造における研磨処理の改良に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to improvements in polishing processing in the production of imaging elements such as gradient index lenses and spherical lenses.
［従来の技術］
以下、屈折率分布をレンズアレイ（以下中、に「レンズ
アレイ」と呼ぶ）の製造工程を例にとり説明する。[Prior Art] Hereinafter, the refractive index distribution will be explained using the manufacturing process of a lens array (hereinafter referred to as "lens array") as an example.
第１図に示す゛ようにレンズアレイ１は、カラスロッド
レンズ２の多数本を光軸をモ行にし、−列又は複数列で
密接配列し、ガラス繊維強化グラスチック（Ｆ ＲＰ
）等から成る上下板材３及び左右スペーサー材４で挾持
するとともに、間隙に黒色シリコン樹脂等の接着剤５を
充填して固着一体止して構成され、複写機、ファクシミ
リ、光プリンタ等の光学系として広く使用されている。As shown in FIG. 1, a lens array 1 includes a large number of crow rod lenses 2 arranged closely in one or more rows with the optical axis in a row, and made of glass fiber reinforced plastic (FRP).
), etc., and are sandwiched by upper and lower plates 3 and left and right spacer materials 4, and the gap is filled with an adhesive 5 such as black silicone resin to fix and hold them together. It is widely used as
ロッドレンズ２は、断面内で屈折率が中心軸上で最大で
外周に向けてパラポックに減少する分布を有しており、
両端面（光入出射面）が平行平面であって通常の球面レ
ンズと同様の結像作用を持っている。The rod lens 2 has a distribution in which the refractive index is maximum on the central axis and decreases parapically toward the outer periphery within the cross section.
Both end surfaces (light input/output surfaces) are parallel planes, and have the same imaging effect as a normal spherical lens.
上記のレンズアレイ１を製作するには、第９図に示ずよ
うにます長尺のロッドレンズ母材をイオン交換処理で製
作し、このロッドレンズ母材の多数本を密接配列して、
長尺の挾持板材３及びスペーサ一部材４を用いて長尺の
レンズアレイ母材ｌＯを製作する。To manufacture the above lens array 1, as shown in FIG. 9, a long rod lens base material is manufactured by ion exchange treatment, and a large number of rod lens base materials are closely arranged.
A long lens array base material IO is manufactured using a long holding plate material 3 and a spacer member 4.
次に、このレンズアレイ母材１０を、ロッドレンズの長
さ方向に一定幅でダイヤモンドホイールカッター６によ
り切断する。Next, this lens array base material 10 is cut with a diamond wheel cutter 6 at a constant width in the length direction of the rod lens.
切断されたレンズアレイ１の多数本を、レンズ端面が上
下になるようにして積層するとともにホルダ７で保持し
、レンズ面を両面ラッピング装置８でダイヤベレットを
用いて荒削りする。A large number of cut lens arrays 1 are stacked with the lens end faces facing up and down and held in a holder 7, and the lens surfaces are rough-cut using a diamond pellet by a double-sided lapping device 8.
次いでラップ砥粒による仕上削りを行なった後、ジルコ
ニア等の遊離砥粒研磨剤を用いて鏡面仕上げ研磨してい
る。Next, finish polishing is performed using lap abrasive grains, and then mirror finish polishing is performed using a free abrasive polishing agent such as zirconia.
［発明が解決しようとする問題点１
上述した従来の方法では、ガラス製のロッドレンズ２と
、周囲の樹脂材料３．４．５との間で被加工性に差異が
あり、このため遊離砥粒による研磨でガラスよりも樹脂
材の方がより速く１ｉＪｌｅ：され、この他研磨布の弾
力性の影響もあって、第９図に示すように研磨後の１コ
ツトレンズ２の端面の周縁は、完全な直角面とならずＲ
形状となるいわゆる面ダレを生じる。このような面タレ
があると、レンズの結像距離のずれ及び非点収差が発生
ずる。[Problem to be Solved by the Invention 1] In the conventional method described above, there is a difference in workability between the glass rod lens 2 and the surrounding resin material 3.4.5. Resin material is polished faster than glass by grain polishing, and due to the influence of the elasticity of the polishing cloth, as shown in FIG. R is not a perfect right angle surface
This causes so-called surface sag, which becomes the shape. Such surface sagging causes a shift in the imaging distance of the lens and astigmatism.
また切断、荒削り、ラップ、仕上げ研磨と多くの加］二
工程を必要とし、砥粒等の費用が嵩むという問題がある
。Furthermore, it requires two processes, including cutting, rough cutting, lapping, and final polishing, and there is a problem in that the cost of abrasive grains and the like increases.
さらに、レンズガラス表面の耐候性、特にオゾン雰囲気
での耐久性が悪いといった問題もある。Furthermore, there is a problem that the weather resistance of the lens glass surface is poor, especially in an ozone atmosphere.
［問題点を解決するためのｆ段］
少なくとも遊離砥粒による研磨処理を省略し、切断ない
しは研削で得られる粗面状態の表面に、固体透明被覆材
を粗面凹凸を埋めるように設けて研磨面と同等の平滑な
表面とする。[Step F to solve the problem] At least the polishing process using free abrasive grains is omitted, and a solid transparent coating material is provided on the rough surface obtained by cutting or grinding to fill in the rough surface irregularities and polished. The surface should be as smooth as the surface.
［作用Ｊ
被覆材の屈折率が素子のそれとほぼ一致していれば、粗
面による乱反射を生じることなく、平滑な研磨面と同様
に光線が直進入射する。したがって光学性能の劣化を伴
なうことなく研磨加工を省略することができる。[Operation J] If the refractive index of the covering material substantially matches that of the element, light rays will enter directly as if on a smooth polished surface without causing diffuse reflection due to the rough surface. Therefore, polishing can be omitted without deteriorating optical performance.
［実施例］
第２図において２０は、先に第８図（イ）に示したダイ
ヤモンドホイールカッター６による長尺レンズアレイ母
材ｌＯからの切り出し後のレンズアレイ１の表面を示し
ている。[Example] In FIG. 2, reference numeral 20 indicates the surface of the lens array 1 after being cut out from the long lens array base material IO using the diamond wheel cutter 6 previously shown in FIG. 8(A).
図示のように、アレイ中のロッドレンズ２の両端面（光
入出射面）は、ｆｉＭＪな凹凸を有する粗面２０となっ
ている。As shown in the figure, both end surfaces (light input/output surfaces) of the rod lenses 2 in the array are rough surfaces 20 having fiMJ irregularities.
この粗面凹凸の高さは、砥粒の粒度によるが、一般にダ
イヤモンドホイールによる切断面は０．５μｍ〜・５μ
ｍ程度である。The height of this rough surface unevenness depends on the grain size of the abrasive grains, but generally the cut surface with a diamond wheel is 0.5 μm to 5 μm.
It is about m.
上記の切断処理の後、研削及び研磨を行なうかわりに、
第３図に拡大して示すように、赦低限上記凹凸２０を埋
める厚みで、固体透明材料から成る被覆層９を設けるこ
とにより表面を平滑化する。Instead of grinding and polishing after the above cutting process,
As shown in an enlarged view in FIG. 3, the surface is smoothed by providing a coating layer 9 made of a solid transparent material with a thickness that fills the above-mentioned unevenness 20.
この被覆層９としては、アクリル系、エポキシ系等の各
種合成樹脂、あるいはゾルゲルガラス等の無機材料が使
用できる。As the coating layer 9, various synthetic resins such as acrylic and epoxy resins, or inorganic materials such as sol-gel glass can be used.
また皮膜形成方法としては、液状の被膜形成材料を浸漬
、スプレー塗布等周知の方法で塗布［７た後、加熱、紫
外線照射（ＵＶ樹脂の場合）などにより硬化させる方法
をとることができる。The film can be formed by applying a liquid film-forming material by a well-known method such as dipping or spray coating [7], and then curing it by heating, ultraviolet irradiation (in the case of UV resin), etc.
なお透明被覆層９は、レンズ２の端面に施されていれば
よいが、レンズアレイｌでは被覆処理の作業性を考慮す
ると、周囲のレンズ挾持板材３、スペーサ一部材４、充
填接着材５も含めたレンズアレイの端面全体にわたり被
覆層９を施すのが都合が良い。Note that the transparent coating layer 9 may be applied to the end face of the lens 2, but in consideration of the workability of the coating process for the lens array l, the surrounding lens holding plate material 3, spacer member 4, and filling adhesive material 5 may also be applied. It is convenient to apply the coating layer 9 over the entire end face of the included lens array.
本発明による効果を晃るために以下の実験を行なった。The following experiments were carried out to examine the effects of the present invention.
断面内における平均屈折率か１．６２のロッドレンズ２
を製作し、このロッドレンズ２の光入出射端面を神々の
表面粗さに研削、研磨加工し、屈折率の異なるマツチン
グオイルに端面を浸した状態で光学性能を測定した。そ
の結果を第４図に示す。図中のＮ２は各マツチングオイ
ルの屈折率であり、グラフの横軸は空間周波数Ｗ （ｊ
Ｄ １０ｎ＋）を表し、たて軸はＭ ’［” Ｆ （
Ｍｏｄｕｌａｔｉｏｎ ＴｒａｎｓｆｅｒＦＩＪｎＣｔ
ｉＯｎ）を表わしている。Rod lens 2 with an average refractive index of 1.62 in the cross section
The light input/output end face of this rod lens 2 was ground and polished to divine surface roughness, and the optical performance was measured with the end face immersed in matching oils with different refractive indexes. The results are shown in FIG. N2 in the figure is the refractive index of each matching oil, and the horizontal axis of the graph is the spatial frequency W (j
D 10n+), and the vertical axis represents M'[”F (
Modulation TransferFIJnCt
iOn).
グラフ中の曲線ａは面粗さＲ□ｘ＝０．１μｌｎ以下の
面（研磨面）、ｂはＪＩＳ粒度６００番の砥粒での研削
で得られた面粗さｒｔ１ａｘ＝ ｏ 、 ｓμｍの面、
ＣはＪＩＳ粒度４００番の砥粒での研削で得られた面粗
さＲ□ｘ＝２．２μｍの面、ｄはＪＩＳ粒歿３２５番の
砥粒での研削で得られた面■さＲｌａｘ−３，２μｍの
面である。Curve a in the graph is a surface with surface roughness R□x=0.1μln or less (polished surface), and b is a surface with surface roughness rt1ax=o, sμm obtained by grinding with abrasive grains of JIS grain size No. 600. ,
C is a surface with a surface roughness R x = 2.2 μm obtained by grinding with an abrasive grain of JIS grain size No. 400, and d is a surface roughness R lax obtained by grinding with an abrasive grain of JIS grain size No. 325. -3.2 μm surface.
同図から、被覆層の屈折率Ｎ２が、レンズの周辺と中心
との間の範囲にあるか、又はこの範囲から外れていても
レンズ面の面粗さＲ１１ａｘが１μｍ以下であれば、研
磨品と同等の光学性能が得られることがわかる。′＆た
被覆層の屈折率が、レンズの周辺と中心の平均値になっ
ていれば、研磨品よりも高周波域での解像力の改善が望
める。From the same figure, if the refractive index N2 of the coating layer is within the range between the periphery and the center of the lens, or even if it is out of this range but the surface roughness R11ax of the lens surface is 1 μm or less, the polished product It can be seen that the same optical performance can be obtained. If the refractive index of the coating layer is the average value between the periphery and the center of the lens, it can be expected that the resolving power in the high frequency range will be improved compared to a polished product.
以上、本発明をレンズアレイについて説明したか、第５
図に示すように単一のロッドレンズ２に対しても適用で
きることは言うまでもない。Above, the present invention has been explained with respect to a lens array.
It goes without saying that the present invention can also be applied to a single rod lens 2 as shown in the figure.
また屈折率分布型レンズに限らず、第６図に示すように
球面レンズ１２に対しても適用できる。Further, the present invention is not limited to a gradient index lens, but can also be applied to a spherical lens 12 as shown in FIG.
さらに、レンズ基材の面粗さと被覆材の屈折率を適当に
選択することにより、レンズ基材と被覆材との界面での
光の散乱をコントロールできるため、低周波特性を意図
的に悪くしたソフトフォーカスレンズの製作も可能であ
る。Furthermore, by appropriately selecting the surface roughness of the lens base material and the refractive index of the coating material, it is possible to control the scattering of light at the interface between the lens base material and the coating material. It is also possible to produce soft focus lenses.
また、第７図のようにガラス母材を研削して球面レンズ
１２を製作し、被覆層９を非球面金型を用いた樹脂材の
モールディングで付着形成することにより、非球面レン
ズ１３を製作することもできる。Further, as shown in FIG. 7, a spherical lens 12 is manufactured by grinding a glass base material, and an aspherical lens 13 is manufactured by attaching and forming a coating layer 9 by molding a resin material using an aspherical mold. You can also.
上記方法によれば、非球面金型によるガラスのプレス成
形に比べて熱的制約が小さいため、製作も容易で高精度
を得やすく、また樹脂材でレンズ全体をモールディング
成形する方法に比べて、レンズの熱的性能劣化が小さい
。According to the above method, the thermal constraints are smaller than press molding of glass using an aspherical mold, so it is easier to manufacture and achieve high precision, and compared to the method of molding the entire lens with resin material. Thermal performance deterioration of the lens is small.
さらに、モールディングの際にレンズ周辺にマウント枠
を設けることもできる。Furthermore, a mount frame can be provided around the lens during molding.
本発明に係る被覆層として、透明着色樹脂、防熱樹脂、
電導樹脂等を用いることにより、研磨加二［の代用に加
えて種々の機能を兼用させることができる。As the coating layer according to the present invention, transparent colored resin, heat-resistant resin,
By using a conductive resin or the like, it can serve various functions in addition to being used as a substitute for polishing.
［発明の効果］
本発明によれば、固定砥粒による切断又は研削加工で生
成された形状精度をそのまま保持できるので、特にレン
ズ面が平坦面である屈折率分布型レンズにおいて、研磨
面ダレによる収差が改善され、研磨加工工程又は研削加
工と研磨加工の両工程を省略することができ、レンズ加
工費用の大幅な費用節減を図ることができる。[Effects of the Invention] According to the present invention, the shape accuracy generated by cutting or grinding using fixed abrasive grains can be maintained as is, so that it is possible to maintain the shape accuracy as is due to sagging of the polished surface, especially in a gradient index lens where the lens surface is a flat surface. Aberrations are improved, a polishing process or both grinding and polishing processes can be omitted, and lens processing costs can be significantly reduced.
またレンズ母材の削り代を小さくできるので、材料歩留
を大幅に向上させることができる。Furthermore, since the amount of machining of the lens base material can be reduced, the material yield can be significantly improved.
さらに、被覆層として耐候性に優れた材質のものを用い
ることによって、レンズガラス表面をオゾン、湿気から
遮断でき耐候性が向上するとともに、被覆層は基材のｍ
細凹凸面に接して設けられているので、平滑な研磨面上
に設けた場合に比べて膜の接着強度が高く剥離し誼い。Furthermore, by using a material with excellent weather resistance for the coating layer, the lens glass surface can be shielded from ozone and moisture, improving weather resistance.
Since the film is provided in contact with a finely uneven surface, the adhesive strength of the film is higher than when it is provided on a smooth polished surface, and peeling and deterioration occur.
第１図は結像素子の一例としてのレンズアレイを示す斜
視図、第２図は粗面状態のレンズアレイ表面に被覆層を
設けた構造を示す断面図、第３図は要部拡大断面図、第
４図は被覆層の屈折率を種々変えてレンズアレイの解像
力を測定した結果を示すＭ ｉ’ ｒ”−空間周波数特
性線図、第５図はｌｉｔ −の屈折率分布型レンズに本
発明を適用した例を示す断面図、第６図は球面レンズに
本発明を適用した例を示す断面図、第７図は本発明を非
球面レンズに適用した例を示す断面図、第８図（イ）は
レンズアレイの切断工程を示す斜視図、第８図（ロ）は
レンズアレイの研削、研磨工程を示ずａ！１面図、第９
図は従来の研磨工程で生じるレンズの面ダレを示す断面
図である。
１・・・レンズアレイ、２・・・屈折率分布型ロッドレ
ンズ、３・・・挾持板、４・・・スペーサー ５・・・
充填接着剤、６・・・ホイールカッター、９・・・透明
被覆層、１０・・・レンズアレイ母材、１２・・・球面
レンズ、１３・・・非球面レンズ、２０・・・粗面。
第
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図
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第９
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手続補正書
７゜
補正の内容
昭和６３年
８月
２日
１）明細書第２頁第６行に「パラポック」とあるのを「
バラポリツク」と補正する。
明細書第２頁第１０行ないし第１１行に「第９図に２゜
特願昭 −号
昭和６３年７月１９日提出の特許願
発明の名称
結像素子
示すように」とあるのを削除する。
３）明細書第２頁第１４行に「・
−・を用いて長尺の」
３゜
補正をする者
とあるのをｒ−
・・を用いて第８図に示すような長
４、
事件との関係 特許出願人
住所 大阪府大阪市東区道峰町４丁目８番地名称
（４００）日本板硝子株式会社代表者 中島達二Fig. 1 is a perspective view showing a lens array as an example of an imaging element, Fig. 2 is a sectional view showing a structure in which a coating layer is provided on the surface of the lens array in a rough state, and Fig. 3 is an enlarged sectional view of main parts. , Fig. 4 is a M i'r''-spatial frequency characteristic diagram showing the results of measuring the resolving power of the lens array with various refractive indexes of the coating layer, and Fig. 5 is a M i'r''-spatial frequency characteristic diagram showing the results of measuring the resolving power of the lens array with various refractive indexes of the coating layer. 6 is a sectional view showing an example in which the invention is applied to a spherical lens; FIG. 7 is a sectional view showing an example in which the invention is applied to an aspherical lens; FIG. 8 is a sectional view showing an example in which the invention is applied to an aspherical lens. (A) is a perspective view showing the cutting process of the lens array, Figure 8 (B) shows the grinding and polishing process of the lens array;
The figure is a cross-sectional view showing surface sagging of a lens that occurs during a conventional polishing process. 1... Lens array, 2... Gradient index rod lens, 3... Holding plate, 4... Spacer 5...
Filling adhesive, 6... Wheel cutter, 9... Transparent coating layer, 10... Lens array base material, 12... Spherical lens, 13... Aspherical lens, 20... Rough surface. (Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. 9). ``parapok'' is written as ``
"Baraporitsuku," he corrected. On page 2 of the specification, lines 10 to 11, there is a statement that says, ``Figure 9 shows the name of the patented invention filed on July 19, 1988, 2゜Patent Application No. 1988.'' delete. 3) In the 14th line of page 2 of the specification, the person who makes the 3゜ amendment using ``--'' is replaced with ``r-...'' to create a long 4-degree case as shown in Figure 8. Relationship with Patent applicant address 4-8 Domine-cho, Higashi-ku, Osaka-shi, Osaka Name
(400) Tatsuji Nakajima, Representative of Nippon Sheet Glass Co., Ltd.
Claims (1)
入出射面を、凹凸を埋めて平滑化するように固体透明材
料で被覆して成る結像素子。An imaging element in which the light input/output surface of the imaging element, which has a rough surface obtained by cutting, grinding, etc., is coated with a solid transparent material so as to fill in the unevenness and smooth the surface.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17939788A JPH0229602A (en) | 1988-07-19 | 1988-07-19 | Imaging element |
| US07/810,347 US5638479A (en) | 1988-07-19 | 1991-12-17 | Optical part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17939788A JPH0229602A (en) | 1988-07-19 | 1988-07-19 | Imaging element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0229602A true JPH0229602A (en) | 1990-01-31 |
Family
ID=16065152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17939788A Pending JPH0229602A (en) | 1988-07-19 | 1988-07-19 | Imaging element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0229602A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0566601U (en) * | 1992-02-17 | 1993-09-03 | 日本板硝子株式会社 | Lens array with channel type cover |
| JP2006218603A (en) * | 2005-02-14 | 2006-08-24 | Olympus Corp | Rod-shaped worked body, its working device and its working method |
| JP2007052361A (en) * | 2005-08-19 | 2007-03-01 | Mitsubishi Rayon Co Ltd | Cutting apparatus for rod lens array original plate |
| JP2007136704A (en) * | 2005-11-15 | 2007-06-07 | Fuji Xerox Co Ltd | Optical writing head, image forming apparatus, and method for manufacturing optical writing head |
| JP2016133704A (en) * | 2015-01-21 | 2016-07-25 | 三菱レイヨン株式会社 | Rod lens array and non-zoom imaging optical system using the same |
| WO2024095915A1 (en) * | 2022-10-31 | 2024-05-10 | 日本板硝子株式会社 | Lens assembly |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50114423A (en) * | 1974-02-23 | 1975-09-08 |
-
1988
- 1988-07-19 JP JP17939788A patent/JPH0229602A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50114423A (en) * | 1974-02-23 | 1975-09-08 |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0566601U (en) * | 1992-02-17 | 1993-09-03 | 日本板硝子株式会社 | Lens array with channel type cover |
| JP2006218603A (en) * | 2005-02-14 | 2006-08-24 | Olympus Corp | Rod-shaped worked body, its working device and its working method |
| JP2007052361A (en) * | 2005-08-19 | 2007-03-01 | Mitsubishi Rayon Co Ltd | Cutting apparatus for rod lens array original plate |
| JP2007136704A (en) * | 2005-11-15 | 2007-06-07 | Fuji Xerox Co Ltd | Optical writing head, image forming apparatus, and method for manufacturing optical writing head |
| JP2016133704A (en) * | 2015-01-21 | 2016-07-25 | 三菱レイヨン株式会社 | Rod lens array and non-zoom imaging optical system using the same |
| WO2024095915A1 (en) * | 2022-10-31 | 2024-05-10 | 日本板硝子株式会社 | Lens assembly |
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