JPH021701U

JPH021701U -

Info

Publication number: JPH021701U
Application number: JP14719988U
Authority: JP
Priority date: 1987-11-11
Filing date: 1988-11-11
Publication date: 1990-01-08

Description

[Brief explanation of the drawing]

第１図は従来の集光レンズシートの斜視図、第
２図は同シートを湾曲させた状態を示す斜視図、
第３図は従来の単位フレネルレンズの光路を示す
図、第４図は従来の単位フレネルレンズの斜視図
、第５図は同ａ〜ｂ線断面図、第６図は同ｃ〜ｄ
線断面図、第７図は同湾曲させたｃ〜ｄ線断面図
、第８図は本考案の集光レンズシートの斜視図、
第９図は同シートを湾曲させた状態を示す斜視図
、第１０図は本考案検出器用集光レンズシートを
構成すの単位リニアフレネルレンズの光路を示す
図、第１１図は同単位リニアフレネルレンズの斜
視図、第１２図は同ａ〜ｂ線断面図、第１３図は
同ｃ〜ｄ線断面図、第１４図は同湾曲させたｃ〜
ｄ線断面図、第１５図は本考案検出器用集光レン
ズシートの検出範囲を示す横断面図、第１６図は
同縦断面図、第１７図は本考案の集光レンズシー
トを使用した検知器の斜視図である。１……従来の集光レンズシート、２……フレネ
ルレンズ、３……受光素子、４……本考案検出器
用集光レンズシート、５……交差リニアフレネル
レンズ、６……検出器。 Fig. 1 is a perspective view of a conventional condensing lens sheet, Fig. 2 is a perspective view showing the sheet in a curved state,
Fig. 3 is a diagram showing the optical path of a conventional unit Fresnel lens, Fig. 4 is a perspective view of a conventional unit Fresnel lens, Fig. 5 is a sectional view taken along line a-b, and Fig. 6 is c-d.
7 is a cross-sectional view along the curved line c to d, and FIG. 8 is a perspective view of the condensing lens sheet of the present invention.
Fig. 9 is a perspective view showing the same sheet in a curved state, Fig. 10 is a view showing the optical path of the unit linear Fresnel lens constituting the condensing lens sheet for a detector of the present invention, and Fig. 11 is the same unit linear Fresnel lens. A perspective view of the lens, FIG. 12 is a cross-sectional view taken along the line a-b, FIG. 13 is a cross-sectional view taken along the line c-d, and FIG. 14 is a curved cross-sectional view of the lens.
d-line cross-sectional view, Figure 15 is a cross-sectional view showing the detection range of the condensing lens sheet for the detector of the present invention, Figure 16 is a longitudinal cross-sectional view of the same, and Figure 17 is a detection using the condensing lens sheet of the present invention. It is a perspective view of a container. DESCRIPTION OF SYMBOLS 1... Conventional condensing lens sheet, 2... Fresnel lens, 3... Light receiving element, 4... Condensing lens sheet for the detector of the present invention, 5... Cross linear Fresnel lens, 6... Detector.

Claims

[Scope of utility model registration request]

A sheet made of an infrared-transmissive material having condensing lenses respectively corresponding to a plurality of detection areas, and each condensing lens being a crossed linear Fresnel lens that intersects at almost right angles on both sides of the sheet. Condensing lens sheet.