171:
194:
162:
25:
185:
The geometry of a hypercentric lens can be visualized by imagining a point source of light at the center of the entrance pupil sending rays in all directions. Any point on the object will be imaged to the point on the image plane found by continuing the ray that passes through it, so the shape of the
217:
being imaged by a hypercentric lens system directly above, whose entrance pupil is below the conveyor belt. The image of the die would contain the top and all four sides at once, because the bottom of the die appears larger than the top.
137:
is located in front of the lens, in the space where an object could be located. This has the result that, in a certain region, objects that are farther away from the lens produce larger
190:
cast by the object from the imaginary point of light. So the closer an object gets to that point (the center of the entrance pupil), the larger its image will be.
42:
108:
89:
61:
46:
68:
281:
75:
35:
57:
286:
179:
Rays are focused so that objects farther from the lens appear larger than objects closer to the lens
170:
193:
82:
258:
232:
227:
150:
206:
161:
134:
275:
214:
202:
247:"A camera model for cameras with hypercentric lenses and some example applications"
141:
than objects that are closer to the lens, in stark contrast to the behavior of the
24:
263:
246:
138:
142:
187:
146:
192:
210:
130:
18:
153:), where farther-away objects always appear smaller.
49:. Unsourced material may be challenged and removed.
8:
262:
109:Learn how and when to remove this message
245:Markus Ulrich, Carsten Steger (2019).
186:image will be the same as that of the
7:
47:adding citations to reliable sources
14:
169:
160:
23:
16:Hypercentric Or Pericentric Lens
251:Machine Vision and Applications
34:needs additional citations for
1:
303:
264:10.1007/s00138-019-01032-w
201:This inversion of normal
209:. Imagine a six-sided
198:
196:
43:improve this article
282:Photographic lenses
197:Reverse perspective
58:"Hypercentric lens"
205:can be useful for
199:
151:entocentric lenses
133:system where the
119:
118:
111:
93:
294:
268:
266:
257:(6): 1013–1028.
233:Telecentric lens
228:Entocentric lens
173:
164:
145:or any ordinary
127:pericentric lens
114:
107:
103:
100:
94:
92:
51:
27:
19:
302:
301:
297:
296:
295:
293:
292:
291:
272:
271:
244:
241:
224:
183:
182:
181:
180:
176:
175:
174:
166:
165:
115:
104:
98:
95:
52:
50:
40:
28:
17:
12:
11:
5:
300:
298:
290:
289:
287:Machine vision
284:
274:
273:
270:
269:
240:
237:
236:
235:
230:
223:
220:
207:machine vision
178:
177:
168:
167:
159:
158:
157:
156:
155:
135:entrance pupil
117:
116:
31:
29:
22:
15:
13:
10:
9:
6:
4:
3:
2:
299:
288:
285:
283:
280:
279:
277:
265:
260:
256:
252:
248:
243:
242:
238:
234:
231:
229:
226:
225:
221:
219:
216:
215:conveyor belt
213:sitting on a
212:
208:
204:
203:perspectivity
195:
191:
189:
172:
163:
154:
152:
148:
144:
140:
136:
132:
128:
124:
113:
110:
102:
91:
88:
84:
81:
77:
74:
70:
67:
63:
60: –
59:
55:
54:Find sources:
48:
44:
38:
37:
32:This article
30:
26:
21:
20:
254:
250:
200:
184:
126:
123:hypercentric
122:
120:
105:
96:
86:
79:
72:
65:
53:
41:Please help
36:verification
33:
99:August 2023
276:Categories
239:References
69:newspapers
143:human eye
222:See also
83:scholar
188:shadow
149:(both
147:camera
139:images
85:
78:
71:
64:
56:
129:is a
90:JSTOR
76:books
131:lens
62:news
259:doi
211:die
125:or
45:by
278::
255:30
253:.
249:.
121:A
267:.
261::
112:)
106:(
101:)
97:(
87:·
80:·
73:·
66:·
39:.
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
